Merge pull request 'womtfix/negative-werte' (#12) from womtfix/negative-werte into master

Reviewed-on: #12

.editorconfig

@@ -0,0 +1,10 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_size = 4
+indent_style = space
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = false

.gitignore

@@ -78,7 +78,8 @@ fabric.properties
 .LSOverride
 
 # Icon must end with two \r
-Icon␍
+Icon
+
 
 # Thumbnails
 ._*
@@ -99,3 +100,9 @@ Network Trash Folder
 Temporary Items
 .apdisk
 
+/api/composer.lock
+/api/codeception.yml
+/api/vendor/
+/api/tests/_*
+/api/tests/*.suite.yml
+/api/.env

api/.env.example

@@ -0,0 +1,8 @@
+## Datenbank-Einstellungen
+DATABASES_HOST=psql.domain.tld
+DATABASES_NAME=db
+DATABASES_USER=user
+DATABASES_PASS=1234
+
+## CORS Einstellungen
+CORS_ALLOW_ORIGIN_REGEX=/https?:\/\/localhost:\d+/

api/Dockerfile

@@ -0,0 +1,8 @@
+FROM php:8.0-apache
+
+RUN apt update && apt install -y libpq-dev
+RUN docker-php-ext-install -j$(nproc) pdo pdo_pgsql
+
+WORKDIR /var/www
+
+RUN a2enmod rewrite

api/codeception.dist.yml

@@ -0,0 +1,23 @@
+paths:
+  tests: tests
+  output: tests/_output
+  data: tests/_data
+  support: tests/_support
+  envs: tests/_envs
+actor_suffix: Tester
+extensions:
+  enabled:
+    - Codeception\Extension\RunFailed
+modules:
+  enabled:
+    - Db:
+        dsn: 'pgsql:host=psql.torsten-hettstedt.net;port=5432;dbname=testdb'
+        user: 'bruce'
+        password: 'mypass'
+        dump: tests/_data/dump.sql
+        cleanup: true # reload dump between tests
+        populate: true # load dump before all tests
+coverage:
+  enabled: true
+  include:
+    - src/*

api/composer.json

@@ -0,0 +1,46 @@
+{
+    "name": "torsten-hettstedt/timekeeping-api",
+    "description": "REST-Api zum F\u00fcllen einer Tabelle f\u00fcr die Arbeitszeiterfassung.",
+    "keywords": [
+        "microframework",
+        "rest",
+        "router",
+        "psr7"
+    ],
+    "license": "GPL-2.0-or-later",
+    "authors": [
+        {
+            "name": "Torsten Lücke",
+            "email": "arbeit@torsten-hettstedt.de",
+            "homepage": "http://torsten-hettstedt.de/"
+        }
+    ],
+    "require": {
+        "slim/slim": "^4.7.1",
+        "vlucas/phpdotenv": "^4.2",
+        "slim/psr7": "^1.3",
+        "php-di/slim-bridge": "^3.1.0",
+        "jetbrains/phpstorm-attributes": "^1.0.0",
+        "myclabs/php-enum": "^1.8.0"
+    },
+    "require-dev": {
+        "phpstan/phpstan": "^0.12.80",
+        "codeception/codeception": "^4.1.18",
+        "codeception/module-phpbrowser": "^1.0.0",
+        "codeception/module-asserts": "^1.0.0",
+        "codeception/module-db": "^1.1.0",
+        "codeception/module-rest": "^1.2.8"
+    },
+    "autoload": {
+        "psr-4": {
+            "TorstenHettstedt\\TimekeepingApi\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "TorstenHettstedt\\TimekeepingApi\\Tests\\Unit\\": "tests/unit",
+            "TorstenHettstedt\\TimekeepingApi\\Tests\\Api\\": "tests/api",
+            "Helper\\": "tests/_support/Helper"
+        }
+    }
+}

api/html/.htaccess

@@ -0,0 +1,21 @@
+<IfModule mod_rewrite.c>
+    RewriteEngine On
+
+    # Some hosts may require you to use the `RewriteBase` directive.
+    # Determine the RewriteBase automatically and set it as environment variable.
+    # If you are using Apache aliases to do mass virtual hosting or installed the
+    # project in a subdirectory, the base path will be prepended to allow proper
+    # resolution of the index.php file and to redirect to the correct URI. It will
+    # work in environments without path prefix as well, providing a safe, one-size
+    # fits all solution. But as you do not need it in this case, you can comment
+    # the following 2 lines to eliminate the overhead.
+    RewriteRule ^(.*) - [E=BASE:%1]
+
+    # If the above doesn't work you might need to set the `RewriteBase` directive manually, it should be the
+    # absolute physical path to the directory that contains this htaccess file.
+    # RewriteBase /
+
+    RewriteCond %{REQUEST_FILENAME} !-d
+    RewriteCond %{REQUEST_FILENAME} !-f
+    RewriteRule ^ index.php [QSA,L]
+</IfModule>

api/html/index.php

@@ -0,0 +1,54 @@
+<?php
+require_once __DIR__ . '/../vendor/autoload.php';
+
+$dotenv = Dotenv\Dotenv::createImmutable(dirname(__DIR__));
+$dotenv->load();
+
+use DI\Container;
+use Slim\Factory\AppFactory;
+use Slim\Routing\RouteCollectorProxy;
+use TorstenHettstedt\TimekeepingApi\Controller\PreflightController;
+use TorstenHettstedt\TimekeepingApi\Controller\WorkingHoursController;
+use TorstenHettstedt\TimekeepingApi\Controller\WorkingHoursViewController;
+use TorstenHettstedt\TimekeepingApi\Middleware\ErrorHandler;
+use TorstenHettstedt\TimekeepingApi\Middleware\JsonBodyParserMiddleware;
+use TorstenHettstedt\TimekeepingApi\Middleware\OriginAccessControlHandler;
+
+$container = new Container();
+
+$container->set('databases', function () {
+    $dsn = "pgsql:host=${_ENV['DATABASES_HOST']};port=5432;dbname=${_ENV['DATABASES_NAME']}";
+    return new PDO($dsn, $_ENV['DATABASES_USER'], $_ENV['DATABASES_PASS']);
+});
+
+AppFactory::setContainer($container);
+$app = AppFactory::create();
+$app->add(new JsonBodyParserMiddleware());
+$app->addBodyParsingMiddleware();
+$app->add(new OriginAccessControlHandler());
+$app->addRoutingMiddleware();
+
+$app->group('/views/working-hours', function (RouteCollectorProxy $group) {
+    $group->options('/weekly', PreflightController::class . ':preflight');
+    $group->get('/weekly', WorkingHoursViewController::class . ':browseWeekly');
+    $group->options('/monthly', PreflightController::class . ':preflight');
+    $group->get('/monthly', WorkingHoursViewController::class . ':browseMonthly');
+    $group->options('/yearly', PreflightController::class . ':preflight');
+    $group->get('/yearly', WorkingHoursViewController::class . ':browseYearly');
+});
+
+$app->group('/working-hours', function (RouteCollectorProxy $group) {
+    $group->options('', PreflightController::class . ':preflight');
+    $group->get('', WorkingHoursController::class . ':browse');
+    $group->post('', WorkingHoursController::class . ':creat');
+    $group->group('/{id:\d\d\d\d-\d\d-\d\d}', function (RouteCollectorProxy $group) {
+        $group->options('', PreflightController::class . ':preflight');
+        $group->get('', WorkingHoursController::class . ':read');
+        $group->put('', WorkingHoursController::class . ':update');
+    });
+});
+
+$errorMiddleware = $app->addErrorMiddleware(true, true, true);
+$errorMiddleware->setDefaultErrorHandler(new ErrorHandler($app));
+
+$app->run();

api/html/openapi.json

@@ -0,0 +1,343 @@
+{
+  "openapi": "3.0.3",
+  "info": {
+    "title": "Zeiterfassung App",
+    "contact": {
+      "name": "Torsten Lücke",
+      "url": "http://torsten-hettstedt.de",
+      "email": "arbeit@torsten-hettstedt.de"
+    },
+    "license": {
+      "name": "GPL-2.0-or-later"
+    },
+    "version": "1.0.0"
+  },
+  "paths": {
+    "/working-hours": {
+      "get": {
+        "tags": [
+          "Eintragungen Arbeitszeiten"
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/components/responses/ListEntities"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      },
+      "post": {
+        "tags": [
+          "Eintragungen Arbeitszeiten"
+        ],
+        "requestBody": {
+          "$ref": "#/components/requestBodies/WorkingHours"
+        },
+        "responses": {
+          "201": {
+            "$ref": "#/components/responses/ReadEntity"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "409": {
+            "$ref": "#/components/responses/RecordAlreadyExistsException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      }
+    },
+    "/working-hours/{date}" : {
+      "get": {
+        "tags": [
+          "Eintragungen Arbeitszeiten"
+        ],
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/date"
+          }
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/components/responses/ListEntities"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "404": {
+            "$ref": "#/components/responses/RecordNotFoundException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "Eintragungen Arbeitszeiten"
+        ],
+        "description": "Angabe des Datum im Request-Body werden ignoriert",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/date"
+          }
+        ],
+        "requestBody": {
+          "$ref": "#/components/requestBodies/WorkingHours"
+        },
+        "responses": {
+          "200": {
+            "$ref": "#/components/responses/ReadEntity"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "404": {
+            "$ref": "#/components/responses/RecordNotFoundException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      }
+    },
+    "/views/working-hours/weekly": {
+      "get": {
+        "tags": [
+          "Ansichten Arbeitszeiten"
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/components/responses/ListEntitiesView"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      }
+    },
+    "/views/working-hours/monthly": {
+      "get": {
+        "tags": [
+          "Ansichten Arbeitszeiten"
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/components/responses/ListEntitiesView"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      }
+    },
+    "/views/working-hours/yearly": {
+      "get": {
+        "tags": [
+          "Ansichten Arbeitszeiten"
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/components/responses/ListEntitiesView"
+          },
+          "400": {
+            "$ref": "#/components/responses/DatabaseException"
+          },
+          "500": {
+            "$ref": "#/components/responses/ServerException"
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "schemas": {
+      "WorkingHours": {
+        "description": "Eintrag der Arbeitszeit für einen Tag",
+        "type": "object",
+        "properties": {
+          "workingDay": {
+            "description": "Datum eines Arbeitstages",
+            "type": "string",
+            "format": "date",
+            "required": false
+          },
+          "workingTime": {
+            "description": "Arbeitszeit des Tages",
+            "type": "string",
+            "pattern": "[0-5]\\d:[0-5]\\d:[0-5]\\d",
+            "example": "08:01:00"
+          }
+        }
+      },
+      "WorkingHoursView": {
+        "type": "object",
+        "readOnly": true,
+        "properties": {
+          "period": {
+            "description": "Angabe des angegebenen Zeitraumes",
+            "type": "string"
+          },
+          "periodDesignation": {
+            "description": "Bezeichnung des Zeitraumes",
+            "type": "string",
+            "enum": [
+              "weekly",
+              "monthly",
+              "yearly"
+            ]
+          },
+          "totalHours": {
+            "description": "Gesamte Arbeitszeit im Zeitraum",
+            "type": "string",
+            "format": "time"
+          },
+          "workingDays": {
+            "description": "Arbeitstage im Zeitraum",
+            "type": "integer"
+          },
+          "overtime": {
+            "description": "Überstunden im Zeitraum",
+            "type": "string",
+            "format": "time"
+          }
+        }
+      },
+      "ErrorObject": {
+        "type": "object",
+        "properties": {
+          "timestamp": {
+            "type": "string",
+            "format": "date-time"
+          },
+          "status":{
+            "type": "integer"
+          },
+          "error": {
+            "type": "string"
+          },
+          "message":{
+            "type": "string"
+          },
+          "path":{
+            "type": "string",
+            "format": "path"
+          }
+        }
+      }
+    },
+    "requestBodies": {
+      "WorkingHours": {
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/WorkingHours"
+            }
+          }
+        }
+      }
+    },
+    "parameters": {
+      "date" : {
+        "description": "Datum eines Eintrages",
+        "name": "date",
+        "in" : "path",
+        "required": true,
+        "schema": {
+          "type": "string",
+          "format": "date"
+        }
+      }
+    },
+    "responses": {
+      "ListEntities": {
+        "description": "Liste der Einträge",
+        "content": {
+          "application/json": {
+            "schema": {
+              "type": "array",
+              "items": {
+                "$ref": "#/components/schemas/WorkingHours"
+              }
+            }
+          }
+        }
+      },
+      "ReadEntity": {
+        "description": "Der Eintrag",
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/WorkingHours"
+            }
+          }
+        }
+      },
+      "ListEntitiesView": {
+        "description": "Liste der Einträge",
+        "content": {
+          "application/json": {
+            "schema": {
+              "type": "array",
+              "items": {
+                "$ref": "#/components/schemas/WorkingHoursView"
+              }
+            }
+          }
+        }
+      },
+      "RecordNotFoundException": {
+        "description": "Der Eintrag wurde nicht gefunden",
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/ErrorObject"
+            }
+          }
+        }
+      },
+      "RecordAlreadyExistsException": {
+        "description": "Für das Datum wurde schon eine Arbeitszeit definiert",
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/ErrorObject"
+            }
+          }
+        }
+      },
+      "DatabaseException": {
+        "description": "Fehler in der Datenbank-Abfrage",
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/ErrorObject"
+            }
+          }
+        }
+      },
+      "ServerException": {
+        "description": "Fehler des Webservers",
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/ErrorObject"
+            }
+          }
+        }
+      }
+    }
+  }
+}

api/html/swagger/index.html

@@ -0,0 +1,60 @@
+<!-- HTML for static distribution bundle build -->
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8">
+    <title>Swagger UI</title>
+    <link rel="stylesheet" type="text/css" href="swagger-ui.css" >
+    <link rel="icon" type="image/png" href="favicon-32x32.png" sizes="32x32" />
+    <link rel="icon" type="image/png" href="favicon-16x16.png" sizes="16x16" />
+    <style>
+      html
+      {
+        box-sizing: border-box;
+        overflow: -moz-scrollbars-vertical;
+        overflow-y: scroll;
+      }
+
+      *,
+      *:before,
+      *:after
+      {
+        box-sizing: inherit;
+      }
+
+      body
+      {
+        margin:0;
+        background: #fafafa;
+      }
+    </style>
+  </head>
+
+  <body>
+    <div id="swagger-ui"></div>
+
+    <script src="swagger-ui-bundle.js"> </script>
+    <script src="swagger-ui-standalone-preset.js"> </script>
+    <script>
+    window.onload = function() {
+      // Begin Swagger UI call region
+      const ui = SwaggerUIBundle({
+        url: "../openapi.json",
+        dom_id: '#swagger-ui',
+        deepLinking: true,
+        presets: [
+          SwaggerUIBundle.presets.apis,
+          SwaggerUIStandalonePreset
+        ],
+        plugins: [
+          SwaggerUIBundle.plugins.DownloadUrl
+        ],
+        layout: "StandaloneLayout"
+      })
+      // End Swagger UI call region
+
+      window.ui = ui
+    }
+  </script>
+  </body>
+</html>

api/html/swagger/oauth2-redirect.html

@@ -0,0 +1,68 @@
+<!doctype html>
+<html lang="en-US">
+<title>Swagger UI: OAuth2 Redirect</title>
+<body onload="run()">
+</body>
+</html>
+<script>
+    'use strict';
+    function run () {
+        var oauth2 = window.opener.swaggerUIRedirectOauth2;
+        var sentState = oauth2.state;
+        var redirectUrl = oauth2.redirectUrl;
+        var isValid, qp, arr;
+
+        if (/code|token|error/.test(window.location.hash)) {
+            qp = window.location.hash.substring(1);
+        } else {
+            qp = location.search.substring(1);
+        }
+
+        arr = qp.split("&")
+        arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';})
+        qp = qp ? JSON.parse('{' + arr.join() + '}',
+                function (key, value) {
+                    return key === "" ? value : decodeURIComponent(value)
+                }
+        ) : {}
+
+        isValid = qp.state === sentState
+
+        if ((
+          oauth2.auth.schema.get("flow") === "accessCode"||
+          oauth2.auth.schema.get("flow") === "authorizationCode"
+        ) && !oauth2.auth.code) {
+            if (!isValid) {
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "warning",
+                    message: "Authorization may be unsafe, passed state was changed in server Passed state wasn't returned from auth server"
+                });
+            }
+
+            if (qp.code) {
+                delete oauth2.state;
+                oauth2.auth.code = qp.code;
+                oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
+            } else {
+                let oauthErrorMsg
+                if (qp.error) {
+                    oauthErrorMsg = "["+qp.error+"]: " +
+                        (qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
+                        (qp.error_uri ? "More info: "+qp.error_uri : "");
+                }
+
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "error",
+                    message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server"
+                });
+            }
+        } else {
+            oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
+        }
+        window.close();
+    }
+</script>

api/phpstan.neon

@@ -0,0 +1,5 @@
+parameters:
+	level: 6
+	paths:
+		- src
+		- tests/unit

api/src/Controller/AbstractController.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Controller;
+
+use JsonSerializable;
+use PDO;
+use Psr\Container\ContainerInterface;
+use Slim\Psr7\Response;
+
+abstract class AbstractController
+{
+
+    protected PDO $databases;
+
+    /**
+     * WorkingHoursController constructor.
+     *
+     * @param ContainerInterface $container
+     *
+     * @throws NotDatabasesException
+     */
+    public function __construct(ContainerInterface $container)
+    {
+        if ($container->has('databases') === false) {
+            throw new NotDatabasesException('Datenbank ist nicht Vorhanden');
+        }
+        $this->databases = $container->get('databases');
+    }
+
+    /**
+     * @param Response                            $response
+     * @param JsonSerializable|JsonSerializable[] $data
+     * @param int                                 $status_code
+     *
+     * @return Response
+     */
+    protected function printResponse(Response $response, mixed $data, int $status_code): Response {
+        $payload = json_encode($data);
+
+        $response->getBody()->write($payload);
+
+        return $response
+            ->withHeader('Content-Type', 'application/json')
+            ->withStatus($status_code);
+    }
+
+}

api/src/Controller/HttpConflictRequestException.php

@@ -0,0 +1,20 @@
+<?php /** @noinspection PhpMissingFieldTypeInspection */
+
+namespace TorstenHettstedt\TimekeepingApi\Controller;
+
+use Slim\Exception\HttpSpecializedException;
+
+class HttpConflictRequestException extends HttpSpecializedException
+{
+    /** @var int */
+    protected $code = 409;
+
+    /** @var string */
+    protected $message = 'Conflict.';
+
+    /** @var string  */
+    protected $title = '409 Conflict';
+
+    /** @var string  */
+    protected $description = 'The 409 (Conflict) status code indicates that the request could not be completed due to a conflict with the current state of the target resource.';
+}

api/src/Controller/NotDatabasesException.php

@@ -0,0 +1,11 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Controller;
+
+use Exception;
+
+class NotDatabasesException extends Exception
+{
+
+}

api/src/Controller/PreflightController.php

@@ -0,0 +1,18 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Controller;
+
+
+use Psr\Http\Message\ResponseInterface;
+use Slim\Psr7\Request;
+use Slim\Psr7\Response;
+use TorstenHettstedt\TimekeepingApi\Middleware\OriginAccessControlHandler;
+
+class PreflightController
+{
+    public function preflight(Request $request, Response $response): ResponseInterface
+    {
+        return (new OriginAccessControlHandler())->originAccessControl($request, $response);
+    }
+}

api/src/Controller/WorkingHoursController.php

@@ -0,0 +1,137 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Controller;
+
+use DateInterval;
+use DateTime;
+use Exception;
+use Fig\Http\Message\StatusCodeInterface;
+use Slim\Exception\HttpBadRequestException;
+use Slim\Exception\HttpInternalServerErrorException;
+use Slim\Exception\HttpNotFoundException;
+use Slim\Psr7\Request;
+use Slim\Psr7\Response;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHours;
+use TorstenHettstedt\TimekeepingApi\Repositories\RepositoryRecordAlreadyExistException;
+use TorstenHettstedt\TimekeepingApi\Repositories\RepositoryRecordNotFoundException;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursRepository;
+
+class WorkingHoursController extends AbstractController
+{
+
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpBadRequestException
+     * @throws HttpNotFoundException
+     */
+    public function update(Request $request, Response $response, array $args): Response
+    {
+        $body = $request->getParsedBody();
+        $repository = new WorkingHoursRepository($this->databases);
+        $model = $this->buildModel($request, $args['id'], $body['workingTime']);
+        try {
+            $repository->update($model);
+        } catch (RepositoryRecordNotFoundException $exception) {
+            throw new HttpNotFoundException($request, 'Der Eintrag ist nicht vorhanden.', $exception);
+        }
+        return $this->printResponse($response, $model, StatusCodeInterface::STATUS_OK);
+    }
+
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpInternalServerErrorException
+     * @noinspection PhpUnusedParameterInspection
+     */
+    public function browse(Request $request, Response $response, array $args): Response
+    {
+        $repository = new WorkingHoursRepository($this->databases);
+        try {
+            return $this->printResponse($response, $repository->findAll(), StatusCodeInterface::STATUS_OK);
+        } catch (Exception $exception) {
+            throw new HttpInternalServerErrorException($request, 'Der Wert für das Datum oder die Zeit ist falsch in der Datenbank', $exception);
+        }
+    }
+
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpNotFoundException
+     * @throws HttpInternalServerErrorException
+     */
+    public function read(Request $request, Response $response, array $args): Response
+    {
+        $repository = new WorkingHoursRepository($this->databases);
+        try {
+            return $this->printResponse($response, $repository->findByKey($args['id']), StatusCodeInterface::STATUS_OK);
+        } catch (RepositoryRecordNotFoundException $exception) {
+            throw new HttpNotFoundException($request, 'Der Eintrag ist nicht vorhanden.', $exception);
+        } catch (Exception $exception) {
+            throw new HttpInternalServerErrorException($request, 'Der Wert für das Datum oder die Zeit ist falsch in der Datenbank', $exception);
+        }
+    }
+
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpBadRequestException
+     * @throws HttpConflictRequestException
+     * @throws HttpInternalServerErrorException
+     * @noinspection PhpUnusedParameterInspection
+     */
+    public function creat(Request $request, Response $response, array $args): Response
+    {
+        $body = $request->getParsedBody();
+        $repository = new WorkingHoursRepository($this->databases);
+        $model = $this->buildModel($request, $body['workingDay'], $body['workingTime']);
+        try {
+            $repository->insert($model);
+        } catch (RepositoryRecordAlreadyExistException $exception) {
+            throw new HttpConflictRequestException($request, 'Der Eintrag ist schon vorhanden.', $exception);
+        } catch (Exception $exception) {
+            throw new HttpInternalServerErrorException($request, 'Der Wert für das Datum oder die Zeit ist falsch in der Datenbank', $exception);
+        }
+        return $this->printResponse($response, $model, StatusCodeInterface::STATUS_CREATED);
+    }
+
+    /**
+     * @param Request $request
+     * @param string  $date
+     * @param string  $time
+     *
+     * @return WorkingHours
+     * @throws HttpBadRequestException
+     */
+    protected function buildModel(Request $request, string $date, string $time): WorkingHours
+    {
+        try {
+            $workingDay = new DateTime($date);
+        } catch (Exception $exception) {
+            throw new HttpBadRequestException($request, 'Der Wert für das Datum ist falsch', $exception);
+        }
+        try {
+            $workingTime = new DateInterval('P0000-00-00T' . $time);
+        } catch (Exception $exception) {
+            throw new HttpBadRequestException($request, 'Der Wert für die Zeit ist falsch', $exception);
+        }
+        return (new WorkingHours())->setWorkingDay($workingDay)->setWorkingTime($workingTime);
+    }
+
+}

api/src/Controller/WorkingHoursViewController.php

@@ -0,0 +1,80 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Controller;
+
+
+use Exception;
+use Fig\Http\Message\StatusCodeInterface;
+use Slim\Exception\HttpInternalServerErrorException;
+use Slim\Psr7\Request;
+use Slim\Psr7\Response;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursMonthlyViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursWeeklyViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursYearlyViewRepository;
+
+class WorkingHoursViewController extends AbstractController
+{
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpInternalServerErrorException
+     * @noinspection PhpUnusedParameterInspection
+     */
+    public function browseWeekly(Request $request, Response $response, array $args): Response
+    {
+        $repository = new WorkingHoursWeeklyViewRepository($this->databases);
+        try {
+            return $this->printResponse($response, $repository->findAll(), StatusCodeInterface::STATUS_OK);
+        } catch (Exception $exception) {
+            throw new HttpInternalServerErrorException($request,
+                'Der Wert für das Datum oder die Zeit ist falsch in der Datenbank', $exception);
+        }
+    }
+
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpInternalServerErrorException
+     * @noinspection PhpUnusedParameterInspection
+     */
+    public function browseMonthly(Request $request, Response $response, array $args): Response
+    {
+        $repository = new WorkingHoursMonthlyViewRepository($this->databases);
+        try {
+            return $this->printResponse($response, $repository->findAll(), StatusCodeInterface::STATUS_OK);
+        } catch (Exception $exception) {
+            throw new HttpInternalServerErrorException($request,
+                'Der Wert für das Datum oder die Zeit ist falsch in der Datenbank', $exception);
+        }
+    }
+
+    /**
+     * @param Request  $request
+     * @param Response $response
+     * @param mixed[]  $args
+     *
+     * @return Response
+     *
+     * @throws HttpInternalServerErrorException
+     * @noinspection PhpUnusedParameterInspection
+     */
+    public function browseYearly(Request $request, Response $response, array $args): Response
+    {
+        $repository = new WorkingHoursYearlyViewRepository($this->databases);
+        try {
+            return $this->printResponse($response, $repository->findAll(), StatusCodeInterface::STATUS_OK);
+        } catch (Exception $exception) {
+            throw new HttpInternalServerErrorException($request,
+                'Der Wert für das Datum oder die Zeit ist falsch in der Datenbank', $exception);
+        }
+    }
+
+}

api/src/Middleware/ErrorHandler.php

@@ -0,0 +1,92 @@
+<?php /** @noinspection PhpUndefinedClassInspection */
+
+
+namespace TorstenHettstedt\TimekeepingApi\Middleware;
+
+
+use JetBrains\PhpStorm\ArrayShape;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Log\LoggerInterface;
+use Slim\App;
+use Slim\Exception\HttpException;
+use Throwable;
+
+class ErrorHandler
+{
+    protected App $app;
+
+    /**
+     * ErrorHandler constructor.
+     *
+     * @param App $app
+     */
+    public function __construct(App $app)
+    {
+        $this->app = $app;
+    }
+
+    /**
+     * @param Throwable $exception
+     *
+     * @return mixed[]
+     */
+    #[ArrayShape([
+        'timestamp' => "false|string",
+        'status'    => "int",
+        "error"     => "string",
+        'message'   => "string",
+        'path'      => "string"
+    ])] protected function buildJsonArray(Throwable $exception): array
+    {
+        $payload = [
+            'timestamp' => date('Y-m-d\TH:m:sP'),
+            'status'    => $exception->getCode(),
+            "error"     => '',
+            'message'   => $exception->getMessage(),
+            'path'      => $exception->getFile()
+        ];
+
+        if ($exception instanceof HttpException) {
+            $payload['error'] = $exception->getTitle();
+        }
+
+        return $payload;
+    }
+
+    /**
+     * @param ServerRequestInterface $request
+     * @param Throwable              $exception
+     * @param bool                   $displayErrorDetails
+     * @param bool                   $logErrors
+     * @param bool                   $logErrorDetails
+     * @param LoggerInterface|null   $logger
+     *
+     * @return ResponseInterface
+     */
+    public function __invoke(
+        ServerRequestInterface $request,
+        Throwable $exception,
+        bool $displayErrorDetails,
+        bool $logErrors,
+        bool $logErrorDetails,
+        ?LoggerInterface $logger = null
+    ): ResponseInterface
+    {
+        if ($logger !== null && $logErrors === true) {
+            $logger->error($exception->getMessage());
+        }
+
+        $payload = $this->buildJsonArray($exception);
+
+        $response = $this->app->getResponseFactory()->createResponse($exception->getCode());
+        $response->getBody()->write(
+            json_encode($payload, JSON_UNESCAPED_UNICODE)
+        );
+
+        $originAccessControlHandler = new OriginAccessControlHandler();
+
+        return $originAccessControlHandler->originAccessControl($request, $response);
+    }
+
+}

api/src/Middleware/JsonBodyParserMiddleware.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Middleware;
+
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface as RequestHandler;
+
+class JsonBodyParserMiddleware implements MiddlewareInterface
+{
+    public function process(Request $request, RequestHandler $handler): Response
+    {
+        $contentType = $request->getHeaderLine('Content-Type');
+
+        if (strstr($contentType, 'application/json')) {
+            $contents = json_decode(file_get_contents('php://input'), true);
+            if (json_last_error() === JSON_ERROR_NONE) {
+                $request = $request->withParsedBody($contents);
+            }
+        }
+
+        return $handler->handle($request);
+    }
+}

api/src/Middleware/OriginAccessControlHandler.php

@@ -0,0 +1,58 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Middleware;
+
+
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface as RequestHandler;
+use Slim\Routing\RouteContext;
+
+class OriginAccessControlHandler implements MiddlewareInterface
+{
+
+    /**
+     * Process an incoming server request.
+     *
+     * Processes an incoming server request in order to produce a response.
+     * If unable to produce the response itself, it may delegate to the provided
+     * request handler to do so.
+     */
+    public function process(Request $request, RequestHandler $handler): Response
+    {
+        $response = $handler->handle($request);
+        return $this->originAccessControl($request, $response);
+    }
+
+    public function originAccessControl(Request $request, Response $response): Response
+    {
+
+        $routeContext = RouteContext::fromRequest($request);
+        $routingResults = $routeContext->getRoutingResults();
+        $methods = $routingResults->getAllowedMethods();
+        $requestHeaders = $request->getHeaderLine('Access-Control-Request-Headers');
+
+        if ($this->testRoute($request)) {
+            //                     Stunden   Minuten   Sekunden
+            $accessControlMaxAge = 24      * 60      * 60;
+            $response = $response->withHeader('Access-Control-Allow-Origin', $this->buildOrigin($request));
+            $response = $response->withHeader('Access-Control-Allow-Methods', implode(',', $methods));
+            $response = $response->withHeader('Access-Control-Allow-Headers', $requestHeaders);
+            $response = $response->withHeader('Access-Control-Max-Age', (string)$accessControlMaxAge);
+        }
+        return $response;
+    }
+
+    protected function testRoute(Request $request): bool
+    {
+        $corsAllowOriginRegex = $_ENV['CORS_ALLOW_ORIGIN_REGEX'] ?? '/https?:\/\/.*:.*/';
+        return preg_match($corsAllowOriginRegex, $this->buildOrigin($request));
+    }
+
+    protected function buildOrigin(Request $request): string
+    {
+        return $request->getHeaderLine('Origin') ?? '';
+    }
+}

api/src/Models/ModelInterface.php

@@ -0,0 +1,11 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Models;
+
+
+use JsonSerializable;
+
+interface ModelInterface extends JsonSerializable
+{
+}

api/src/Models/PeriodDesignationEnum.php

@@ -0,0 +1,23 @@
+<?php /** @noinspection PhpUnusedPrivateFieldInspection */
+
+
+namespace TorstenHettstedt\TimekeepingApi\Models;
+
+use MyCLabs\Enum\Enum;
+
+/**
+ * Enum-Klasse für die unterstützten Periode-Definitionen.
+ * Der Wert der Periode ist ein Format-String für {@link https://secure.php.net/manual/en/datetime.format.php}.
+ *
+ * @extends Enum<string>
+ *
+ * @method static PeriodDesignationEnum WEEKLY()
+ * @method static PeriodDesignationEnum MONTHLY()
+ * @method static PeriodDesignationEnum YEARLY()
+ */
+class PeriodDesignationEnum extends Enum
+{
+    private const WEEKLY = 'Y#W';
+    private const MONTHLY = 'Y-m';
+    private const YEARLY = 'Y';
+}

api/src/Models/WorkingHours.php

@@ -0,0 +1,65 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Models;
+
+
+use DateInterval;
+use DateTime;
+use JetBrains\PhpStorm\ArrayShape;
+
+class WorkingHours implements ModelInterface
+{
+    protected ?DateTime $workingDay = null;
+    protected ?DateInterval $workingTime = null;
+
+    /**
+     * @return DateTime|null
+     */
+    public function getWorkingDay(): ?DateTime
+    {
+        return $this->workingDay;
+    }
+
+    /**
+     * @param DateTime $workingDay
+     *
+     * @return WorkingHours
+     */
+    public function setWorkingDay(DateTime $workingDay): WorkingHours
+    {
+        $this->workingDay = $workingDay;
+        return $this;
+    }
+
+    /**
+     * @return DateInterval|null
+     */
+    public function getWorkingTime(): ?DateInterval
+    {
+        return $this->workingTime;
+    }
+
+    /**
+     * @param DateInterval $workingTime
+     *
+     * @return WorkingHours
+     */
+    public function setWorkingTime(DateInterval $workingTime): WorkingHours
+    {
+        $this->workingTime = $workingTime;
+        return $this;
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    #[ArrayShape(['workingDay' => "string", 'workingTime' => "string"])]
+    public function jsonSerialize(): array
+    {
+        return [
+            'workingDay' => $this->getWorkingDay()->format('Y-m-d'),
+            'workingTime' => $this->getWorkingTime()->format('%H:%I:%S')
+        ];
+    }
+}

api/src/Models/WorkingHoursView.php

@@ -0,0 +1,103 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Models;
+
+
+use DateInterval;
+use DateTimeInterface;
+use JetBrains\PhpStorm\ArrayShape;
+
+class WorkingHoursView implements ModelInterface
+{
+    protected DateTimeInterface $period;
+    protected PeriodDesignationEnum $periodDesignation;
+    protected int $workingDays;
+    protected DateInterval $totalHours;
+    protected DateInterval $overtime;
+
+    /**
+     * WorkingHoursView constructor.
+     *
+     * @param DateTimeInterface     $period
+     * @param PeriodDesignationEnum $periodDesignation
+     * @param int                   $workingDays
+     * @param DateInterval          $totalHours
+     * @param DateInterval          $overtime
+     */
+    public function __construct(
+        DateTimeInterface $period,
+        PeriodDesignationEnum $periodDesignation,
+        int $workingDays,
+        DateInterval $totalHours,
+        DateInterval $overtime
+    ) {
+        $this->period = $period;
+        $this->periodDesignation = $periodDesignation;
+        $this->workingDays = $workingDays;
+        $this->totalHours = $totalHours;
+        $this->overtime = $overtime;
+    }
+
+    /**
+     * @return DateTimeInterface
+     */
+    public function getPeriod(): DateTimeInterface
+    {
+        return $this->period;
+    }
+
+    /**
+     * @return PeriodDesignationEnum
+     */
+    public function getPeriodDesignation(): PeriodDesignationEnum
+    {
+        return $this->periodDesignation;
+    }
+
+    /**
+     * @return int
+     */
+    public function getWorkingDays(): int
+    {
+        return $this->workingDays;
+    }
+
+    /**
+     * @return DateInterval
+     */
+    public function getTotalHours(): DateInterval
+    {
+        return $this->totalHours;
+    }
+
+    /**
+     * @return DateInterval
+     */
+    public function getOvertime(): DateInterval
+    {
+        return $this->overtime;
+    }
+
+    /**
+     * @inheritDoc
+     *
+     * @return array<string, mixed>
+     */
+    #[ArrayShape(['period'            => "string",
+                  'periodDesignation' => "string",
+                  'totalHours'        => "string",
+                  'workingDays'       => "int",
+                  'overtime'          => "string"
+    ])] public function jsonSerialize(): array
+    {
+        $formatOvertime = (($this->getOvertime()->invert === 1) ? '-' : '') . '%H:%I:%S';
+        return [
+            'period'            => $this->getPeriod()->format($this->getPeriodDesignation()->getValue()),
+            'periodDesignation' => strtolower($this->getPeriodDesignation()->getKey()),
+            'workingDays'       => $this->getWorkingDays(),
+            'totalHours'        => $this->getTotalHours()->format('%H:%I:%S'),
+            'overtime'          => $this->getOvertime()->format($formatOvertime)
+        ];
+    }
+}

api/src/Repositories/AbstractWorkingHoursViewRepository.php

@@ -0,0 +1,117 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+use DateInterval;
+use DateTimeInterface;
+use Exception;
+use PDO;
+use PDOException;
+use TorstenHettstedt\TimekeepingApi\Models\PeriodDesignationEnum;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHoursView;
+
+/**
+ * @implements RepositoryReaderInterface<WorkingHoursView>
+ */
+abstract class AbstractWorkingHoursViewRepository implements RepositoryReaderInterface
+{
+
+    protected const SQL_SELECT = '';
+    protected const SQL_WHERE = '';
+
+    protected PDO                   $database;
+    protected PeriodDesignationEnum $periodDesignation;
+
+    /**
+     * WorkingHoursRepository constructor.
+     *
+     * @param PDO $database
+     */
+    public function __construct(PDO $database)
+    {
+        $this->database = $database;
+        $this->database->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    }
+
+    /**
+     *
+     * Gibt alle vorhandenen Einträge zurück
+     *
+     * @return WorkingHoursView[]
+     * @throws Exception
+     * @throws PDOException
+     */
+    public function findAll(): array
+    {
+        $models = [];
+        $stmt = $this->database->prepare(static::SQL_SELECT);
+        $stmt->execute();
+        while ($row = $stmt->fetch()) {
+            $model = new WorkingHoursView(
+                $this->buildDateFromPeriod($row['period']),
+                $this->periodDesignation,
+                (int) $row['workingDays'],
+                $this->buildDateInterval($row['totalHours']),
+                $this->buildDateInterval($row['overtime'])
+            );
+            $models[] = $model;
+        }
+        return $models;
+    }
+
+    /**
+     * Gibt den Eintrag zurück, der durch die ID
+     *
+     * @param mixed $primary_key
+     *
+     * @return WorkingHoursView
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     * @throws PDOException
+     */
+    public function findByKey(mixed $primary_key): WorkingHoursView
+    {
+        $stmt = $this->database->prepare(static::SQL_SELECT . static::SQL_WHERE);
+        $stmt->bindParam(1, $primary_key);
+        $stmt->execute();
+        $row = $stmt->fetch();
+        if ($row === false) {
+            throw new RepositoryRecordNotFoundException();
+        }
+        return new WorkingHoursView(
+            $this->buildDateFromPeriod($row['period']),
+            $this->periodDesignation,
+            (int) $row['workingDays'],
+            $this->buildDateInterval($row['totalHours']),
+            $this->buildDateInterval($row['overtime'])
+        );
+    }
+
+    /**
+     * @param string $time
+     *
+     * @return DateInterval
+     * @throws Exception
+     */
+    protected function buildDateInterval(string $time): DateInterval
+    {
+        $time_array = explode(':', $time);
+        $hours = (int)$time_array[0];
+        $minutes = (int)$time_array[1];
+        $seconds = (int)$time_array[2];
+        $interval = new DateInterval(sprintf('PT%dH%dM%dS', abs($hours), abs($minutes), abs($seconds)));
+        if (($hours < 0 || ($minutes < 0) || ($seconds < 0))) {
+            $interval->invert = 1;
+        }
+        return $interval;
+    }
+
+    /**
+     * @param string $period
+     *
+     * @return DateTimeInterface
+     * @throws Exception
+     */
+    abstract protected function buildDateFromPeriod(string $period): DateTimeInterface;
+}

api/src/Repositories/RepositoryException.php

@@ -0,0 +1,12 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+
+use Exception;
+
+class RepositoryException extends Exception
+{
+
+}

api/src/Repositories/RepositoryReaderInterface.php

@@ -0,0 +1,28 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+/**
+ * @template T of \TorstenHettstedt\TimekeepingApi\Models\ModelInterface
+ */
+interface RepositoryReaderInterface
+{
+    /**
+     *
+     * Gibt alle vorhandenen Einträge zurück
+     *
+     * @return T[]
+     */
+    public function findAll(): array;
+
+    /**
+     * Gibt den Eintrag zurück, der durch die ID
+     *
+     * @param mixed $primary_key
+     *
+     * @return T
+     * @throws RepositoryRecordNotFoundException
+     */
+    public function findByKey(mixed $primary_key);
+}

api/src/Repositories/RepositoryRecordAlreadyExistException.php

@@ -0,0 +1,10 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+
+class RepositoryRecordAlreadyExistException extends RepositoryException
+{
+
+}

api/src/Repositories/RepositoryRecordNotFoundException.php

@@ -0,0 +1,10 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+
+class RepositoryRecordNotFoundException extends RepositoryException
+{
+
+}

api/src/Repositories/RepositoryWriterInterface.php

@@ -0,0 +1,31 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+/**
+ * @template T of \TorstenHettstedt\TimekeepingApi\Models\ModelInterface
+ */
+interface RepositoryWriterInterface
+{
+    /**
+     * @param T $model
+     *
+     * @throws RepositoryRecordAlreadyExistException
+     */
+    public function insert(mixed $model): void;
+
+    /**
+     * @param T $model
+     *
+     * @throws RepositoryRecordNotFoundException
+     */
+    public function update(mixed $model): void;
+
+    /**
+     * @param T $model
+     *
+     * @throws RepositoryRecordNotFoundException
+     */
+    public function delete(mixed $model): void;
+}

api/src/Repositories/WorkingHoursMonthlyViewRepository.php

@@ -0,0 +1,38 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+
+use DateTime;
+use DateTimeInterface;
+use PDO;
+use TorstenHettstedt\TimekeepingApi\Models\PeriodDesignationEnum;
+
+class WorkingHoursMonthlyViewRepository extends AbstractWorkingHoursViewRepository
+{
+
+    protected const SQL_SELECT = <<<SQL
+        select 
+            "Monat" as "period",
+            "Gesamtarbeitszeit" as "totalHours",
+            "Arbeitstage" as "workingDays",
+            "Überstunden" as "overtime"
+        from "Arbeitszeiten - Monat"
+SQL;
+    protected const SQL_WHERE = ' where "Monat" = ?';
+
+    protected PDO                   $database;
+    protected PeriodDesignationEnum $periodDesignation;
+
+    public function __construct(PDO $database)
+    {
+        parent::__construct($database);
+        $this->periodDesignation = PeriodDesignationEnum::MONTHLY();
+    }
+
+    protected function buildDateFromPeriod(string $period): DateTimeInterface
+    {
+        return new DateTime($period . '-01');
+    }
+}

api/src/Repositories/WorkingHoursRepository.php

@@ -0,0 +1,153 @@
+<?php
+
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+
+use DateInterval;
+use DateTime;
+use Exception;
+use InvalidArgumentException;
+use PDO;
+use PDOException;
+use TorstenHettstedt\TimekeepingApi\Models\ModelInterface;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHours;
+
+/**
+ * @implements RepositoryReaderInterface<WorkingHours>
+ * @implements RepositoryWriterInterface<WorkingHours>
+ */
+class WorkingHoursRepository implements RepositoryReaderInterface, RepositoryWriterInterface
+{
+
+    protected PDO $database;
+
+    /**
+     * WorkingHoursRepository constructor.
+     *
+     * @param PDO $database
+     */
+    public function __construct(PDO $database)
+    {
+        $this->database = $database;
+        $this->database->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    }
+
+    /**
+     *
+     * Gibt alle vorhandenen Einträge zurück
+     *
+     * @return WorkingHours[]
+     * @throws Exception
+     * @throws PDOException
+     */
+    public function findAll(): array
+    {
+        $models = [];
+        $stmt = $this->database->prepare('select "Datum" as "workingDay", "Arbeitszeit" as "workingTime" from public."Arbeitszeiten" order by "Datum"');
+        $stmt->execute();
+        while ($row = $stmt->fetch()) {
+            $model = new WorkingHours();
+            $model
+                ->setWorkingDay(new DateTime($row['workingDay']))
+                ->setWorkingTime(new DateInterval('P0000-00-00T' . $row['workingTime']));
+            $models[] = $model;
+        }
+        return $models;
+    }
+
+    /**
+     * Gibt den Eintrag zurück, der durch die ID
+     *
+     * @param mixed $primary_key
+     *
+     * @return WorkingHours
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     * @throws PDOException
+     */
+    public function findByKey(mixed $primary_key): WorkingHours
+    {
+        $stmt = $this->database->prepare('select "Datum" as "workingDay", "Arbeitszeit" as "workingTime" from public."Arbeitszeiten" where "Datum" = ?');
+        $stmt->bindParam(1, $primary_key);
+        $stmt->execute();
+        $row = $stmt->fetch();
+        if ($row === false) {
+            throw new RepositoryRecordNotFoundException();
+        }
+        $model = new WorkingHours();
+        $model
+            ->setWorkingDay(new DateTime($row['workingDay']))
+            ->setWorkingTime(new DateInterval('P0000-00-00T' . $row['workingTime']));
+        return $model;
+    }
+
+    /**
+     * @param WorkingHours|ModelInterface $model
+     *
+     * @throws RepositoryRecordAlreadyExistException
+     * @throws Exception
+     */
+    public function insert(mixed $model): void
+    {
+        if ($model instanceof WorkingHours) {
+            $workingDay = $model->getWorkingDay()->format('Y-m-d');
+            $workingTime = $model->getWorkingTime()->format('%H:%I:%S');
+        } else {
+            throw new InvalidArgumentException('Es wird ein Modell der Klasse "' . WorkingHours::class . '" verlangt.');
+        }
+
+        try {
+            $this->findByKey($workingDay);
+            throw new RepositoryRecordAlreadyExistException();
+        } /** @noinspection PhpUnusedLocalVariableInspection */
+        catch (RepositoryRecordNotFoundException $exception) {
+            $stmt = $this->database->prepare('insert into  public."Arbeitszeiten" ("Datum", "Arbeitszeit") values (?, ?) on conflict do nothing');
+            $stmt->bindParam(1, $workingDay);
+            $stmt->bindParam(2, $workingTime);
+            $stmt->execute();
+        }
+    }
+
+    /**
+     * @param WorkingHours|ModelInterface $model
+     *
+     * @throws RepositoryRecordNotFoundException
+     */
+    public function update(mixed $model): void
+    {
+        if ($model instanceof WorkingHours) {
+            $workingDay = $model->getWorkingDay()->format('Y-m-d');
+            $workingTime = $model->getWorkingTime()->format('%H:%I:%S');
+        } else {
+            throw new InvalidArgumentException('Es wird ein Modell der Klasse "' . WorkingHours::class . '" verlangt.');
+        }
+        $stmt = $this->database->prepare('update public."Arbeitszeiten" set "Arbeitszeit" = ? where "Datum" = ?');
+        $stmt->bindParam(1, $workingTime);
+        $stmt->bindParam(2, $workingDay);
+        $stmt->execute();
+        if ($stmt->rowCount() < 1) {
+            throw new RepositoryRecordNotFoundException();
+        }
+    }
+
+    /**
+     * @param WorkingHours|ModelInterface $model
+     *
+     * @throws RepositoryRecordNotFoundException
+     */
+    public function delete(mixed $model): void
+    {
+        if ($model instanceof WorkingHours) {
+            $workingDay = $model->getWorkingDay()->format('Y-m-d');
+        } else {
+            throw new InvalidArgumentException('Es wird ein Modell der Klasse "' . WorkingHours::class . '" verlangt.');
+        }
+        $stmt = $this->database->prepare('delete from  public."Arbeitszeiten" where "Datum" = ?');
+        $stmt->bindParam(1, $workingDay);
+        $stmt->execute();
+        if ($stmt->rowCount() < 1) {
+            throw new RepositoryRecordNotFoundException();
+        }
+    }
+}

api/src/Repositories/WorkingHoursWeeklyViewRepository.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+use DateInterval;
+use DateTime;
+use DateTimeInterface;
+use PDO;
+use TorstenHettstedt\TimekeepingApi\Models\PeriodDesignationEnum;
+
+class WorkingHoursWeeklyViewRepository extends AbstractWorkingHoursViewRepository
+{
+
+    protected const SQL_SELECT = <<<SQL
+        select 
+            "Woche" as "period",
+            "Gesamtarbeitszeit" as "totalHours",
+            "Arbeitstage" as "workingDays",
+            "Überstunden" as "overtime"
+        from "Arbeitszeiten - Woche"
+SQL;
+    protected const SQL_WHERE = ' where "Woche" = ?';
+
+    protected PDO                   $database;
+    protected PeriodDesignationEnum $periodDesignation;
+
+    public function __construct(PDO $database)
+    {
+        parent::__construct($database);
+        $this->periodDesignation = PeriodDesignationEnum::WEEKLY();
+    }
+
+    protected function buildDateFromPeriod(string $period): DateTimeInterface
+    {
+        $time_array = explode('#', $period);
+        $year = (int)$time_array[0];
+        $week = (int)$time_array[1] - 1;
+        $date = new DateTime('first day of January ' . $year);
+        $date->modify('monday this week');
+        $date->add(new DateInterval(sprintf('P%dW', $week)));
+        return $date;
+    }
+}

api/src/Repositories/WorkingHoursYearlyViewRepository.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Repositories;
+
+use DateTime;
+use DateTimeInterface;
+use Exception;
+use PDO;
+use TorstenHettstedt\TimekeepingApi\Models\PeriodDesignationEnum;
+
+class WorkingHoursYearlyViewRepository extends AbstractWorkingHoursViewRepository
+{
+
+    protected const SQL_SELECT = <<<SQL
+        select 
+            "Jahr" as "period",
+            "Gesamtarbeitszeit" as "totalHours",
+            "Arbeitstage" as "workingDays",
+            "Überstunden" as "overtime"
+        from "Arbeitszeiten - Jahr"
+SQL;
+    protected const SQL_WHERE = ' where "Jahr" = ?';
+
+    protected PDO                   $database;
+    protected PeriodDesignationEnum $periodDesignation;
+
+    public function __construct(PDO $database)
+    {
+        parent::__construct($database);
+        $this->periodDesignation = PeriodDesignationEnum::YEARLY();
+    }
+
+    /**
+     * @param string $period
+     *
+     * @return DateTimeInterface
+     * @throws Exception
+     */
+    protected function buildDateFromPeriod(string $period): DateTimeInterface
+    {
+        return new DateTime($period . '-01-01');
+    }
+}

api/tests/_data/dump.sql

@@ -0,0 +1,148 @@
+--
+-- PostgreSQL database dump
+--
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+DROP TABLE IF EXISTS public."Arbeitszeiten";
+DROP VIEW IF EXISTS public."Arbeitszeiten - Woche";
+DROP VIEW IF EXISTS public."Arbeitszeiten - Monat";
+DROP VIEW IF EXISTS public."Arbeitszeiten - Jahr";
+
+--
+-- Name: Arbeitszeiten; Type: TABLE; Schema: public; Owner: torsten
+--
+
+CREATE TABLE public."Arbeitszeiten" (
+    "Datum"       date not null,
+    "Arbeitszeit" interval(6) null,
+    constraint "Arbeitszeiten_pkey" primary key ("Datum")
+);
+
+
+ALTER TABLE public."Arbeitszeiten" OWNER TO bruce;
+
+--
+-- Name: Arbeitszeiten - Jahr; Type: VIEW; Schema: public; Owner: torsten
+--
+
+CREATE OR REPLACE VIEW public."Arbeitszeiten - Jahr" AS
+    SELECT (date_part('year'::text, "Arbeitszeiten"."Datum"))::text AS "Jahr",
+           sum("Arbeitszeiten"."Arbeitszeit") AS "Gesamtarbeitszeit",
+           count("Arbeitszeiten"."Datum") AS "Arbeitstage",
+           (sum("Arbeitszeiten"."Arbeitszeit") - ((count("Arbeitszeiten"."Datum"))::double precision * '08:00:00'::interval)) AS "Überstunden"
+    FROM public."Arbeitszeiten"
+    GROUP BY (date_part('year'::text, "Arbeitszeiten"."Datum"))
+    ORDER BY (date_part('year'::text, "Arbeitszeiten"."Datum"));
+
+
+ALTER TABLE public."Arbeitszeiten - Jahr" OWNER TO bruce;
+
+--
+-- Name: Arbeitszeiten - Monat; Type: VIEW; Schema: public; Owner: torsten
+--
+
+CREATE OR REPLACE VIEW public."Arbeitszeiten - Monat" AS
+    SELECT to_char(date_trunc('month'::text, ("Arbeitszeiten"."Datum")::timestamp with time zone), 'TMYYYY TMMonth'::text) AS "Monat",
+           sum("Arbeitszeiten"."Arbeitszeit") AS "Gesamtarbeitszeit",
+           count("Arbeitszeiten"."Datum") AS "Arbeitstage",
+           (sum("Arbeitszeiten"."Arbeitszeit") - ((count("Arbeitszeiten"."Datum"))::double precision * '08:00:00'::interval)) AS "Überstunden"
+    FROM public."Arbeitszeiten"
+    GROUP BY (date_trunc('month'::text, ("Arbeitszeiten"."Datum")::timestamp with time zone))
+    ORDER BY (date_trunc('month'::text, ("Arbeitszeiten"."Datum")::timestamp with time zone));
+
+
+ALTER TABLE public."Arbeitszeiten - Monat" OWNER TO bruce;
+
+--
+-- Name: Arbeitszeiten - Woche; Type: VIEW; Schema: public; Owner: torsten
+--
+
+CREATE OR REPLACE VIEW public."Arbeitszeiten - Woche" AS
+    SELECT to_char(date_trunc('week'::text, ("Arbeitszeiten"."Datum")::timestamp with time zone), 'TMYYYY#WW'::text) AS "Woche",
+           sum("Arbeitszeiten"."Arbeitszeit") AS "Gesamtarbeitszeit",
+           count("Arbeitszeiten"."Datum") AS "Arbeitstage",
+           (sum("Arbeitszeiten"."Arbeitszeit") - ((count("Arbeitszeiten"."Datum"))::double precision * '08:00:00'::interval)) AS "Überstunden"
+    FROM public."Arbeitszeiten"
+    GROUP BY (date_trunc('week'::text, ("Arbeitszeiten"."Datum")::timestamp with time zone))
+    ORDER BY (date_trunc('week'::text, ("Arbeitszeiten"."Datum")::timestamp with time zone));
+
+
+ALTER TABLE public."Arbeitszeiten - Woche" OWNER TO bruce;
+
+--
+-- Data for Name: Arbeitszeiten; Type: TABLE DATA; Schema: public; Owner: torsten
+--
+
+COPY public."Arbeitszeiten" ("Datum", "Arbeitszeit") FROM stdin;
+2020-01-07	08:06:00
+2020-01-08	08:16:00
+2020-01-09	07:49:00
+2020-01-10	07:30:00
+2020-01-13	08:06:00
+2020-01-14	08:04:00
+2020-01-15	08:20:00
+2020-01-16	07:13:00
+2020-01-17	07:57:00
+2020-01-20	07:53:00
+2020-01-21	07:49:00
+2020-01-22	07:56:00
+2020-01-23	07:55:00
+2020-01-24	07:08:00
+2020-01-27	08:23:00
+2020-01-28	07:20:00
+2020-01-29	08:13:00
+2020-01-30	08:43:00
+2020-01-31	07:21:00
+2020-02-03	07:56:00
+2020-02-04	08:05:00
+2020-02-05	07:58:00
+2020-02-06	08:01:00
+2020-02-07	07:59:00
+2020-02-10	07:50:00
+2020-02-11	08:01:00
+2020-02-12	08:14:00
+2020-02-13	08:12:00
+2020-02-14	07:51:00
+2020-02-17	07:59:00
+2020-02-18	08:05:00
+2020-02-19	07:34:00
+2020-02-20	07:33:00
+2020-02-21	07:56:00
+2020-02-24	08:02:00
+2020-02-25	08:13:00
+2020-02-26	08:42:00
+2020-02-27	07:49:00
+2020-02-28	08:16:00
+2020-03-02	08:22:00
+2020-03-03	08:20:00
+2020-03-04	08:12:00
+2020-03-05	08:32:00
+2020-03-06	04:41:00
+2020-03-09	07:05:00
+2020-03-10	07:34:00
+2020-03-11	07:39:00
+2020-03-12	07:50:00
+2020-03-13	08:26:00
+2020-03-16	07:51:00
+2020-03-17	07:50:00
+2020-03-18	07:19:00
+2020-03-19	07:55:00
+2020-03-20	05:43:00
+2020-03-23	08:05:00
+2020-03-24	08:21:00
+2020-03-25	08:10:00
+2020-03-26	10:31:00
+2020-03-27	04:55:00
+2020-03-30	08:21:00
+2020-03-31	08:01:00
+\.

api/tests/_support/Helper/Api.php

@@ -0,0 +1,37 @@
+<?php
+namespace Helper;
+
+// here you can define custom actions
+// all public methods declared in helper class will be available in $I
+
+use Codeception\Module;
+
+class Api extends Module
+{
+
+    const FORMAT_TIME = 'string:regex(/\d+:[0-5]\d:[0-5]\d/)';
+    const FORMAT_DATE = 'string:regex(/\d{4}-\d{2}-\d{2}/)';
+
+    const WORKING_HOURS_JSON_FORMAT = [
+        'workingDay'  => self::FORMAT_DATE,
+        'workingTime' => self::FORMAT_TIME,
+    ];
+
+    const WORKING_HOURS_VIEW_JSON_FORMAT = [
+        "period"            => "string",
+        "periodDesignation" => "string",
+        "totalHours"        => self::FORMAT_TIME,
+        "workingDays"       => 'integer:>0',
+        "overtime"          => self::FORMAT_TIME,
+    ];
+
+    const ERROR_JSON_FORMAT = [
+        "timestamp" => "string:date",
+        "status"    => "integer",
+        "error"     => "string",
+        "message"   => "string",
+        "path"      => "string",
+    ];
+
+    const TEST_ORIGIN = 'http://localhost:1234';
+}

api/tests/api.suite.dist.yml

@@ -0,0 +1,8 @@
+actor: ApiTester
+modules:
+    enabled:
+        - \Helper\Api
+        - REST:
+              url: http://localhost:8091/
+              depends: PhpBrowser
+              part: Json

api/tests/api/Views/BrowseWorkingHoursMonthlyCest.php

@@ -0,0 +1,35 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\Views;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class BrowseWorkingHoursMonthlyCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'GET');
+        $I->sendOptions('/views/working-hours/monthly');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    /**
+     * @param ApiTester $I
+     */
+    public function browseWorkingHoursView(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendGet('/views/working-hours/monthly');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_VIEW_JSON_FORMAT);
+    }
+}

api/tests/api/Views/BrowseWorkingHoursWeeklyCest.php

@@ -0,0 +1,35 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\Views;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class BrowseWorkingHoursWeeklyCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'GET');
+        $I->sendOptions('/views/working-hours/weekly');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    /**
+     * @param ApiTester $I
+     */
+    public function browseWorkingHoursView(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendGet('/views/working-hours/weekly');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_VIEW_JSON_FORMAT);
+    }
+}

api/tests/api/Views/BrowseWorkingHoursYearlyCest.php

@@ -0,0 +1,35 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\Views;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class BrowseWorkingHoursYearlyCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'GET');
+        $I->sendOptions('/views/working-hours/yearly');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    /**
+     * @param ApiTester $I
+     */
+    public function browseWorkingHoursView(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendGet('/views/working-hours/yearly');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_VIEW_JSON_FORMAT);
+    }
+}

api/tests/api/WorkingHours/BrowseWorkingHoursCest.php

@@ -0,0 +1,35 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\WorkingHours;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class BrowseWorkingHoursCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'GET');
+        $I->sendOptions('/working-hours');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    /**
+     * @param ApiTester $I
+     */
+    public function browseWorkingHours(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendGet('/working-hours');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_JSON_FORMAT);
+    }
+}

api/tests/api/WorkingHours/CreateWorkingHoursCest.php

@@ -0,0 +1,69 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\WorkingHours;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class CreateWorkingHoursCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'POST');
+        $I->sendOptions('/working-hours');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    public function createWorkingHoursWithNewValidRecord(ApiTester $I): void
+    {
+        $I->haveHttpHeader('accept', 'application/json');
+        $I->haveHttpHeader('content-type', 'application/json');
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendPost('/working-hours', [
+            'workingDay'  => '2020-04-01',
+            'workingTime' => '08:00:00',
+        ]);
+        $I->seeResponseCodeIs(HttpCode::CREATED);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_JSON_FORMAT);
+    }
+
+    // tests
+    public function createWorkingHoursWithNewInvalidRecord(ApiTester $I): void
+    {
+        $I->haveHttpHeader('accept', 'application/json');
+        $I->haveHttpHeader('content-type', 'application/json');
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendPost('/working-hours', [
+            'workingDay'  => '2020-04-01',
+            'workingTime' => 8.0,
+        ]);
+        $I->seeResponseCodeIs(HttpCode::BAD_REQUEST);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::ERROR_JSON_FORMAT);
+    }
+
+    // tests
+    public function createWorkingHoursWithExistingValidRecord(ApiTester $I): void
+    {
+        $I->haveHttpHeader('accept', 'application/json');
+        $I->haveHttpHeader('content-type', 'application/json');
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendPost('/working-hours', [
+            'workingDay'  => '2020-01-15',
+            'workingTime' => '08:00:00',
+        ]);
+        $I->seeResponseCodeIs(HttpCode::CONFLICT);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::ERROR_JSON_FORMAT);
+    }
+}

api/tests/api/WorkingHours/ReadWorkingHoursCest.php

@@ -0,0 +1,42 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\WorkingHours;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class ReadWorkingHoursCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'GET');
+        $I->sendOptions('/working-hours/2020-04-15');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    public function readExistingWorkingHours(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendGet('/working-hours/2020-01-15');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_JSON_FORMAT);
+    }
+
+    public function readNotExistingWorkingHours(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendGet('/working-hours/2020-04-15');
+        $I->seeResponseCodeIs(HttpCode::NOT_FOUND);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::ERROR_JSON_FORMAT);
+    }
+}

api/tests/api/WorkingHours/UpdateWorkingHoursCest.php

@@ -0,0 +1,67 @@
+<?php /** @noinspection PhpUnused */
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Api\WorkingHours;
+
+use ApiTester;
+use Codeception\Util\HttpCode;
+use Helper\Api;
+
+class UpdateWorkingHoursCest
+{
+    public static function preflight(ApiTester $I): void
+    {
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->haveHttpHeader('Access-Control-Request-Method', 'PUT');
+        $I->sendOptions('/working-hours/2020-01-15');
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->seeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeHttpHeader('Access-Control-Allow-Methods');
+        $I->seeHttpHeader('Access-Control-Allow-Headers');
+        $I->seeHttpHeader('Access-Control-Max-Age');
+    }
+
+    public function updateWorkingHoursWithExistingValidRecord(ApiTester $I): void
+    {
+        $I->haveHttpHeader('accept', 'application/json');
+        $I->haveHttpHeader('content-type', 'application/json');
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendPut('/working-hours/2020-01-15', [
+            'workingDay'  => '2020-01-15',
+            'workingTime' => '10:00:00',
+        ]);
+        $I->seeResponseCodeIs(HttpCode::OK);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::WORKING_HOURS_JSON_FORMAT);
+    }
+
+    public function updateWorkingHoursWithNewValidRecord(ApiTester $I): void
+    {
+        $I->haveHttpHeader('accept', 'application/json');
+        $I->haveHttpHeader('content-type', 'application/json');
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendPut('/working-hours/2020-04-15', [
+            'workingDay'  => '2020-04-15',
+            'workingTime' => '10:00:00',
+        ]);
+        $I->seeResponseCodeIs(HttpCode::NOT_FOUND);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::ERROR_JSON_FORMAT);
+    }
+
+    public function updateWorkingHoursWithNewInvalidRecord(ApiTester $I): void
+    {
+        $I->haveHttpHeader('accept', 'application/json');
+        $I->haveHttpHeader('content-type', 'application/json');
+        $I->haveHttpHeader('Origin', Api::TEST_ORIGIN);
+        $I->sendPut('/working-hours/2020-01-15', [
+            'workingDay'  => '2020-01-15',
+            'workingTime' => 8.0,
+        ]);
+        $I->seeResponseCodeIs(HttpCode::BAD_REQUEST);
+        $I->canSeeHttpHeader('Access-Control-Allow-Origin', Api::TEST_ORIGIN);
+        $I->seeResponseIsJson();
+        $I->seeResponseMatchesJsonType(Api::ERROR_JSON_FORMAT);
+    }
+}

api/tests/unit/Controller/WorkingHoursControllerTest.php

@@ -0,0 +1,222 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Controller;
+
+use Codeception\Test\Unit;
+use Exception;
+use PDO;
+use Psr\Container\ContainerInterface;
+use Psr\Http\Message\StreamInterface;
+use Slim\Exception\HttpBadRequestException;
+use Slim\Exception\HttpInternalServerErrorException;
+use Slim\Exception\HttpNotFoundException;
+use Slim\Psr7\Request;
+use Slim\Psr7\Response;
+use TorstenHettstedt\TimekeepingApi\Controller\HttpConflictRequestException;
+use TorstenHettstedt\TimekeepingApi\Controller\NotDatabasesException;
+use TorstenHettstedt\TimekeepingApi\Controller\WorkingHoursController;
+
+class WorkingHoursControllerTest extends Unit
+{
+
+    const EXISTING_DATE     = '2020-01-28';
+    const EXISTING_INTERVAL = '07:20:00';
+    const NEW_DATE          = '2020-04-01';
+    const NEW_INTERVAL      = '07:59:00';
+
+    protected ContainerInterface $container;
+    protected Request $request;
+    protected Response $response;
+
+    /**
+     * @throws Exception
+     */
+    protected function _before(): void
+    {
+        parent::_before();
+        /** @noinspection SpellCheckingInspection */
+        $this->container = $this->makeEmpty(ContainerInterface::class, [
+            'has' => true,
+            'get' => new PDO('pgsql:host=psql.torsten-hettstedt.net;port=5432;dbname=testdb;user=bruce;password=mypass')
+        ]);
+        $this->request = $this->makeEmpty(Request::class, [
+                'getParsedBody' => [
+                    'workingDay'  => self::EXISTING_DATE,
+                    'workingTime' => self::EXISTING_INTERVAL,
+                ]
+        ]);
+        $this->response = $this->makeEmpty(Response::class, [
+            'getBody' => $this->makeEmpty(StreamInterface::class, [
+                'write' => function (mixed $data) {
+                    $this->assertIsString($data);
+                    $this->assertJson($data);
+                },
+            ]),
+            'withHeader' => $this->makeEmpty(Response::class, [
+                'withStatus' => $this->makeEmpty(Response::class),
+            ]),
+        ]);
+    }
+
+    /**
+     * @throws NotDatabasesException
+     * @throws Exception
+     */
+    public function testConstructWithNonDatabase(): void
+    {
+        $this->container = $this->makeEmpty(ContainerInterface::class, [
+            'has' => false
+        ]);
+        $this->expectException(NotDatabasesException::class);
+        new WorkingHoursController($this->container);
+    }
+
+    /**
+     * @throws NotDatabasesException
+     * @throws Exception
+     */
+    public function testBrowse(): void
+    {
+        $controller = new WorkingHoursController($this->container);
+        $response = $controller->browse($this->request, $this->response, []);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+
+    /**
+     * @throws NotDatabasesException
+     * @throws HttpBadRequestException
+     * @throws HttpNotFoundException
+     */
+    public function testUpdateExistRecord(): void
+    {
+        $controller = new WorkingHoursController($this->container);
+        $response = $controller->update($this->request, $this->response, [
+            'id' => self::EXISTING_DATE
+        ]);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+
+    /**
+     * @throws NotDatabasesException
+     * @throws HttpBadRequestException
+     * @throws HttpNotFoundException
+     */
+    public function testUpdateNotExistRecord(): void
+    {
+        $controller = new WorkingHoursController($this->container);
+        $this->expectException(HttpNotFoundException::class);
+        $controller->update($this->request, $this->response, [
+            'id' => self::NEW_DATE
+        ]);
+    }
+
+    /**
+     * @return string[][]
+     */
+    public function invalidDataProvider(): array
+    {
+        return [
+            [
+                self::NEW_DATE,
+                '07:59'
+            ],
+            [
+                '2020-13-33',
+                self::NEW_INTERVAL
+            ],
+        ];
+    }
+
+    /**
+     * @param string $date
+     * @param string $time
+     *
+     * @dataProvider invalidDataProvider
+     *
+     * @throws HttpBadRequestException
+     * @throws HttpConflictRequestException
+     * @throws HttpInternalServerErrorException
+     * @throws NotDatabasesException
+     * @throws Exception
+     */
+    public function testCreatInvalidData(string $date, string $time): void
+    {
+        $this->request = $this->makeEmpty(Request::class, [
+            'getParsedBody' => [
+                'workingDay'  => $date,
+                'workingTime' => $time,
+            ]
+        ]);
+        $controller = new WorkingHoursController($this->container);
+        $this->expectException(HttpBadRequestException::class);
+        $controller->creat($this->request, $this->response, []);
+    }
+
+    /**
+     * @throws HttpBadRequestException
+     * @throws NotDatabasesException
+     * @throws HttpInternalServerErrorException
+     * @throws HttpConflictRequestException
+     * @throws Exception
+     */
+    public function testCreatNewRecord(): void
+    {
+        $this->request = $this->makeEmpty(Request::class, [
+            'getParsedBody' => [
+                'workingDay'  => self::NEW_DATE,
+                'workingTime' => self::NEW_INTERVAL,
+            ]
+        ]);
+        $controller = new WorkingHoursController($this->container);
+        $response = $controller->creat($this->request, $this->response, []);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+
+    /**
+     * @throws HttpBadRequestException
+     * @throws HttpConflictRequestException
+     * @throws HttpInternalServerErrorException
+     * @throws NotDatabasesException
+     * @throws Exception
+     */
+    public function testCreatExistRecord(): void
+    {
+        $this->request = $this->makeEmpty(Request::class, [
+            'getParsedBody' => [
+                'workingDay'  => self::EXISTING_DATE,
+                'workingTime' => self::EXISTING_INTERVAL,
+            ]
+        ]);
+        $controller = new WorkingHoursController($this->container);
+        $this->expectException(HttpConflictRequestException::class);
+        $controller->creat($this->request, $this->response, []);
+    }
+
+    /**
+     * @throws HttpInternalServerErrorException
+     * @throws HttpNotFoundException
+     * @throws NotDatabasesException
+     */
+    public function testReadExistRecord(): void
+    {
+        $controller = new WorkingHoursController($this->container);
+        $response = $controller->read($this->request, $this->response, [
+            'id' => self::EXISTING_DATE
+        ]);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+
+    /**
+     * @throws HttpInternalServerErrorException
+     * @throws HttpNotFoundException
+     * @throws NotDatabasesException
+     */
+    public function testReadNotExistRecord(): void
+    {
+        $controller = new WorkingHoursController($this->container);
+        $this->expectException(HttpNotFoundException::class);
+        $controller->read($this->request, $this->response, [
+            'id' => self::NEW_DATE
+        ]);
+    }
+}

api/tests/unit/Controller/WorkingHoursViewControllerTest.php

@@ -0,0 +1,88 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Controller;
+
+use Codeception\Test\Unit;
+use Exception;
+use PDO;
+use Psr\Container\ContainerInterface;
+use Psr\Http\Message\StreamInterface;
+use Slim\Psr7\Request;
+use Slim\Psr7\Response;
+use TorstenHettstedt\TimekeepingApi\Controller\NotDatabasesException;
+use TorstenHettstedt\TimekeepingApi\Controller\WorkingHoursViewController;
+
+class WorkingHoursViewControllerTest extends Unit
+{
+    protected ContainerInterface $container;
+    protected Request $request;
+    protected Response $response;
+
+    /**
+     * @throws Exception
+     */
+    protected function _before(): void
+    {
+        parent::_before();
+        /** @noinspection SpellCheckingInspection */
+        $this->container = $this->makeEmpty(ContainerInterface::class, [
+            'has' => true,
+            'get' => new PDO('pgsql:host=psql.torsten-hettstedt.net;port=5432;dbname=testdb;user=bruce;password=mypass')
+        ]);
+        $this->request = $this->makeEmpty(Request::class, []);
+        $this->response = $this->makeEmpty(Response::class, [
+            'getBody' => $this->makeEmpty(StreamInterface::class, [
+                'write' => function (mixed $data) {
+                    $this->assertIsString($data);
+                    $this->assertJson($data);
+                },
+            ]),
+            'withHeader' => $this->makeEmpty(Response::class, [
+                'withStatus' => $this->makeEmpty(Response::class),
+            ]),
+        ]);
+    }
+
+    /**
+     * @throws NotDatabasesException
+     * @throws Exception
+     */
+    public function testConstructWithNonDatabase(): void
+    {
+        $this->container = $this->makeEmpty(ContainerInterface::class, [
+            'has' => false
+        ]);
+        $this->expectException(NotDatabasesException::class);
+        new WorkingHoursViewController($this->container);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testBrowseMonthly(): void
+    {
+        $controller = new WorkingHoursViewController($this->container);
+        $response = $controller->browseMonthly($this->request, $this->response, []);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testBrowseYearly(): void
+    {
+        $controller = new WorkingHoursViewController($this->container);
+        $response = $controller->browseYearly($this->request, $this->response, []);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testBrowseWeekly(): void
+    {
+        $controller = new WorkingHoursViewController($this->container);
+        $response = $controller->browseWeekly($this->request, $this->response, []);
+        $this->assertInstanceOf(Response::class, $response);
+    }
+}

api/tests/unit/Middleware/ErrorHandlerTest.php

@@ -0,0 +1,116 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Middleware;
+
+use Codeception\Stub\Expected;
+use Codeception\Test\Unit;
+use Exception;
+use Psr\Http\Message\ResponseFactoryInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Message\StreamInterface;
+use Psr\Log\LoggerInterface;
+use Slim\App;
+use Slim\Exception\HttpException;
+use Slim\Interfaces\RouteParserInterface;
+use Slim\Routing\RouteContext;
+use Slim\Routing\RoutingResults;
+use TorstenHettstedt\TimekeepingApi\Middleware\ErrorHandler;
+
+class ErrorHandlerTest extends Unit
+{
+
+    protected App                    $app;
+    protected ServerRequestInterface $request;
+    protected Exception              $exception;
+    protected LoggerInterface        $logger;
+
+    /**
+     * @throws Exception
+     */
+    protected function _before(): void
+    {
+        parent::_before();
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->app = $this->makeEmpty(App::class, [
+            'getResponseFactory' => $this->makeEmpty(ResponseFactoryInterface::class, [
+                'createResponse' => $this->makeEmpty(ResponseInterface::class, [
+                    'getBody' => $this->makeEmpty(StreamInterface::class, [
+                        'write' => function (mixed $data) {
+                            $this->assertIsString($data);
+                            $this->assertJson($data);
+                        },
+                    ]),
+                ]),
+            ]),
+        ]);
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->request = $this->makeEmpty(ServerRequestInterface::class, [
+            'getAttribute' => function($name) {
+                return match ($name) {
+                    RouteContext::ROUTE_PARSER => $this->makeEmpty(RouteParserInterface::class),
+                    RouteContext::ROUTING_RESULTS => $this->makeEmpty(RoutingResults::class),
+                    default => null,
+                };
+            }
+        ]);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testUseWithLogger(): void
+    {
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->exception = $this->make(Exception::class, [
+            'message' => '',
+            'code'    => 400,
+            'file'    => '/path(to/file',
+        ]);
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->logger = $this->makeEmpty(LoggerInterface::class, [
+            'error' => Expected::once(),
+        ]);
+
+        $middleWare = new ErrorHandler($this->app);
+        $middleWare($this->request, $this->exception, true, true, true, $this->logger);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testUseWithHttpException(): void
+    {
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->exception = $this->make(HttpException::class, [
+            'message' => '',
+            'code'    => 400,
+            'file'    => '/path(to/file',
+            'getTitle'   => Expected::once('The Title'),
+        ]);
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->logger = $this->makeEmpty(LoggerInterface::class, []);
+
+        $middleWare = new ErrorHandler($this->app);
+        $middleWare($this->request, $this->exception, true, true, true, $this->logger);
+
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testUseWithGeneralException(): void
+    {
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->exception = $this->make(Exception::class, [
+            'message' => '',
+            'code'    => 400,
+            'file'    => '/path(to/file',
+        ]);
+        /** @noinspection PhpFieldAssignmentTypeMismatchInspection */
+        $this->logger = $this->makeEmpty(LoggerInterface::class, []);
+
+        $middleWare = new ErrorHandler($this->app);
+        $middleWare($this->request, $this->exception, true, true, true, $this->logger);
+    }
+}

api/tests/unit/Models/WorkingHoursTest.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Models;
+
+use Codeception\Test\Unit;
+use DateInterval;
+use DateTime;
+use Error;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHours;
+
+class WorkingHoursTest extends Unit
+{
+
+    public function testWorkingHoursWithoutContent(): void
+    {
+        $obj = new WorkingHours();
+        $this->assertNull($obj->getWorkingDay());
+        $this->assertNull($obj->getWorkingTime());
+
+        $this->expectException(Error::class);
+        $obj->jsonSerialize();
+    }
+
+    /**
+     * @return array[]
+     */
+    public function workingHoursProvider(): array
+    {
+        return [
+            [
+                new DateTime('2020-11-30'),
+                new DateInterval("PT8H"),
+                [
+                    'workingDay'  => '2020-11-30',
+                    'workingTime' => '08:00:00',
+                ],
+            ],
+            [
+                new DateTime('2021-05-03'),
+                new DateInterval("PT7H45M"),
+                [
+                    'workingDay'  => '2021-05-03',
+                    'workingTime' => '07:45:00',
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * @param DateTime              $date
+     * @param DateInterval          $interval
+     * @param array<string, string> $should_json
+     *
+     * @dataProvider workingHoursProvider
+     */
+    public function testWorkingHoursWithContent(DateTime $date, DateInterval $interval, array $should_json): void
+    {
+
+        $obj = new WorkingHours();
+        $obj
+            ->setWorkingDay($date)
+            ->setWorkingTime($interval);
+
+        $this->assertNotNull($obj->getWorkingDay());
+        $this->assertInstanceOf(DateTime::class, $obj->getWorkingDay());
+        $this->assertEquals($date, $obj->getWorkingDay());
+
+        $this->assertNotNull($obj->getWorkingTime());
+        $this->assertInstanceOf(DateInterval::class, $obj->getWorkingTime());
+        $this->assertEquals($interval, $obj->getWorkingTime());
+
+        $json = $obj->jsonSerialize();
+        $this->assertIsArray($json);
+        $this->assertEquals($should_json, $json);
+    }
+}

api/tests/unit/Models/WorkingHoursViewTest.php

@@ -0,0 +1,135 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Models;
+
+use Codeception\Test\Unit;
+use DateInterval;
+use DateTime;
+use DateTimeInterface;
+use TorstenHettstedt\TimekeepingApi\Models\PeriodDesignationEnum;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHoursView;
+
+class WorkingHoursViewTest extends Unit
+{
+
+    /**
+     * @return array[]
+     */
+    public function workingHoursProvider(): array
+    {
+        $date = new DateTime('2020-11-30');
+        $work_days = 15;
+        $total_hours = new DateInterval("PT32H22M");
+        $overtime = new DateInterval("PT22M");
+        $absence_time = clone $overtime;
+        $absence_time->invert = 1;
+        return [
+            [
+                $date, PeriodDesignationEnum::WEEKLY(), $work_days, $total_hours, $overtime,
+                [
+                    'period'            => '2020#49',
+                    'periodDesignation' => 'weekly',
+                    'workingDays'       => 15,
+                    'totalHours'        => '32:22:00',
+                    'overtime'          => '00:22:00'
+                ],
+            ],
+            [
+                $date, PeriodDesignationEnum::WEEKLY(), $work_days, $total_hours, $absence_time,
+                [
+                    'period'            => '2020#49',
+                    'periodDesignation' => 'weekly',
+                    'workingDays'       => 15,
+                    'totalHours'        => '32:22:00',
+                    'overtime'          => '-00:22:00'
+                ],
+            ],
+            [
+                $date, PeriodDesignationEnum::MONTHLY(), $work_days, $total_hours, $overtime,
+                [
+                    'period'            => '2020-11',
+                    'periodDesignation' => 'monthly',
+                    'workingDays'       => 15,
+                    'totalHours'        => '32:22:00',
+                    'overtime'          => '00:22:00'
+                ],
+            ],
+            [
+                $date, PeriodDesignationEnum::MONTHLY(), $work_days, $total_hours, $absence_time,
+                [
+                    'period'            => '2020-11',
+                    'periodDesignation' => 'monthly',
+                    'workingDays'       => 15,
+                    'totalHours'        => '32:22:00',
+                    'overtime'          => '-00:22:00'
+                ],
+            ],
+            [
+                $date, PeriodDesignationEnum::YEARLY(), $work_days, $total_hours, $overtime, [
+                    'period'            => '2020',
+                    'periodDesignation' => 'yearly',
+                    'workingDays'       => 15,
+                    'totalHours'        => '32:22:00',
+                    'overtime'          => '00:22:00'
+                ],
+            ],
+            [
+                $date, PeriodDesignationEnum::YEARLY(), $work_days, $total_hours, $absence_time, [
+                    'period'            => '2020',
+                    'periodDesignation' => 'yearly',
+                    'workingDays'       => 15,
+                    'totalHours'        => '32:22:00',
+                    'overtime'          => '-00:22:00'
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * @param DateTimeInterface          $period
+     * @param PeriodDesignationEnum      $periodDesignation
+     * @param int                        $workingDays
+     * @param DateInterval               $totalHours
+     * @param DateInterval               $overtime
+     * @param array<string, string>      $should_json
+     *
+     * @dataProvider workingHoursProvider
+     */
+    public function testWorkingHoursViewWithContent(
+        DateTimeInterface $period,
+        PeriodDesignationEnum $periodDesignation,
+        int $workingDays,
+        DateInterval $totalHours,
+        DateInterval $overtime,
+        array $should_json
+    ): void
+    {
+
+        $obj = new WorkingHoursView($period, $periodDesignation, $workingDays, $totalHours, $overtime);
+
+        $this->assertNotNull($obj->getPeriod());
+        $this->assertInstanceOf(DateTimeInterface::class, $obj->getPeriod());
+        $this->assertEquals($period, $obj->getPeriod());
+
+        $this->assertNotNull($obj->getPeriodDesignation());
+        $this->assertInstanceOf(PeriodDesignationEnum::class, $obj->getPeriodDesignation());
+        $this->assertEquals($periodDesignation, $obj->getPeriodDesignation());
+
+        $this->assertNotNull($obj->getWorkingDays());
+        $this->assertIsInt($obj->getWorkingDays());
+        $this->assertEquals($workingDays, $obj->getWorkingDays());
+
+        $this->assertNotNull($obj->getTotalHours());
+        $this->assertInstanceOf(DateInterval::class, $obj->getTotalHours());
+        $this->assertEquals($totalHours, $obj->getTotalHours());
+
+        $this->assertNotNull($obj->getOvertime());
+        $this->assertInstanceOf(DateInterval::class, $obj->getOvertime());
+        $this->assertEquals($overtime, $obj->getOvertime());
+
+
+        $json = $obj->jsonSerialize();
+        $this->assertIsArray($json);
+        $this->assertEquals($should_json, $json);
+    }
+}

api/tests/unit/Repositories/WorkingHoursRepositoryTest.php

@@ -0,0 +1,193 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Repositories;
+
+use Codeception\Test\Unit;
+use DateInterval;
+use DateTime;
+use Exception;
+use InvalidArgumentException;
+use PDO;
+use TorstenHettstedt\TimekeepingApi\Models\ModelInterface;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHours;
+use TorstenHettstedt\TimekeepingApi\Repositories\RepositoryRecordAlreadyExistException;
+use TorstenHettstedt\TimekeepingApi\Repositories\RepositoryRecordNotFoundException;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursRepository;
+
+class WorkingHoursRepositoryTest extends Unit
+{
+    const EXISTING_DATE     = '2020-01-28';
+    const EXISTING_INTERVAL = 'PT7H20M';
+    const NEW_DATE          = '2020-04-01';
+    const NEW_INTERVAL      = 'PT7H59M';
+    const RECORDS_COUNT     = 61;
+
+    protected PDO          $pdoObject;
+
+    protected function _before(): void
+    {
+        /** @noinspection SpellCheckingInspection */
+        $this->pdoObject = new PDO('pgsql:host=psql.torsten-hettstedt.net;port=5432;dbname=testdb;user=bruce;password=mypass');
+        parent::_before();
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testFindAll(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $models = $repository->findAll();
+        $this->assertIsArray($models);
+        $this->assertContainsOnly(WorkingHours::class, $models);
+        $this->assertCount(self::RECORDS_COUNT, $models);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     */
+    public function testExistingFindByKey(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $repository->findByKey(self::EXISTING_DATE);
+        $this->assertInstanceOf(WorkingHours::class, $model);
+        $this->assertEquals(new DateTime(self::EXISTING_DATE), $model->getWorkingDay());
+        $this->assertEquals(new DateInterval(self::EXISTING_INTERVAL), $model->getWorkingTime());
+    }
+
+    public function testNotExistingFindByKey(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $this->expectException(RepositoryRecordNotFoundException::class);
+        $repository->findByKey(self::NEW_DATE);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testInsertWithInvalidModel(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->makeEmpty(ModelInterface::class);
+        $this->expectException(InvalidArgumentException::class);
+        $repository->insert($model);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     */
+    public function testNewInsert(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->make(WorkingHours::class, [
+            'workingDay'  => new DateTime(self::NEW_DATE),
+            'workingTime' => new DateInterval(self::NEW_INTERVAL),
+        ]);
+        $repository->insert($model);
+        $model = $repository->findByKey(self::NEW_DATE);
+        $this->assertInstanceOf(WorkingHours::class, $model);
+        $this->assertEquals(new DateTime(self::NEW_DATE), $model->getWorkingDay());
+        $this->assertEquals(new DateInterval(self::NEW_INTERVAL), $model->getWorkingTime());
+        $this->assertCount(self::RECORDS_COUNT + 1, $repository->findAll());
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testExistingInsert(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->make(WorkingHours::class, [
+            'workingDay'  => new DateTime(self::EXISTING_DATE),
+            'workingTime' => new DateInterval(self::NEW_INTERVAL),
+        ]);
+        $this->expectException(RepositoryRecordAlreadyExistException::class);
+        $repository->insert($model);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     */
+    public function testDeleteWithInvalidModel(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->makeEmpty(ModelInterface::class);
+        $this->expectException(InvalidArgumentException::class);
+        $repository->delete($model);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     */
+    public function testExistsDelete(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->make(WorkingHours::class, [
+            'workingDay'  => new DateTime(self::EXISTING_DATE),
+            'workingTime' => new DateInterval(self::EXISTING_INTERVAL),
+        ]);
+        $repository->delete($model);
+        $this->expectException(RepositoryRecordNotFoundException::class);
+        $repository->findByKey(self::EXISTING_DATE);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     */
+    public function testNotExistsDelete(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->make(WorkingHours::class, [
+            'workingDay'  => new DateTime(self::NEW_DATE),
+            'workingTime' => new DateInterval(self::NEW_INTERVAL),
+        ]);
+        $this->expectException(RepositoryRecordNotFoundException::class);
+        $repository->delete($model);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     */
+    public function testUpdateWithInvalidModel(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->makeEmpty(ModelInterface::class);
+        $this->expectException(InvalidArgumentException::class);
+        $repository->update($model);
+    }
+
+    /**
+     * @throws RepositoryRecordNotFoundException
+     * @throws Exception
+     */
+    public function testExistsUpdate(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->make(WorkingHours::class, [
+            'workingDay'  => new DateTime(self::EXISTING_DATE),
+            'workingTime' => new DateInterval(self::NEW_INTERVAL),
+        ]);
+        $repository->update($model);
+        $model_db = $repository->findByKey(self::EXISTING_DATE);
+        $this->assertEquals(new DateInterval(self::NEW_INTERVAL), $model_db->getWorkingTime());
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function testNotExistsUpdate(): void
+    {
+        $repository = new WorkingHoursRepository($this->pdoObject);
+        $model = $this->make(WorkingHours::class, [
+            'workingDay'  => new DateTime(self::NEW_DATE),
+            'workingTime' => new DateInterval(self::NEW_INTERVAL),
+        ]);
+        $this->expectException(RepositoryRecordNotFoundException::class);
+        $repository->update($model);
+    }
+}

api/tests/unit/Repositories/WorkingHoursViewRepositoryTest.php

@@ -0,0 +1,110 @@
+<?php
+
+namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Repositories;
+
+use Codeception\Test\Unit;
+use DateTime;
+use DateTimeZone;
+use Exception;
+use PDO;
+use TorstenHettstedt\TimekeepingApi\Models\WorkingHoursView;
+use TorstenHettstedt\TimekeepingApi\Repositories\RepositoryRecordNotFoundException;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursWeeklyViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursMonthlyViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursYearlyViewRepository;
+
+class WorkingHoursViewRepositoryTest extends Unit
+{
+    protected PDO          $pdoObject;
+
+    protected function _before(): void
+    {
+        /** @noinspection SpellCheckingInspection */
+        $this->pdoObject = new PDO('pgsql:host=psql.torsten-hettstedt.net;port=5432;dbname=testdb;user=bruce;password=mypass');
+        parent::_before();
+    }
+
+    /**
+     * @return array[]
+     */
+    public function listObjectProvider(): array
+    {
+        return [
+            [WorkingHoursYearlyViewRepository::class,  1],
+            [WorkingHoursMonthlyViewRepository::class, 3],
+            [WorkingHoursWeeklyViewRepository::class, 13],
+        ];
+    }
+
+    /**
+     * @return array[]
+     * @throws Exception
+     */
+    public function existingObjectProvider(): array
+    {
+        return [
+            [WorkingHoursYearlyViewRepository::class,  '2020',          61, new DateTime('2020-01-01', new DateTimeZone('UCT'))],
+            [WorkingHoursMonthlyViewRepository::class, '2020 February', 20, new DateTime('2020-02-01', new DateTimeZone('UCT'))],
+            [WorkingHoursWeeklyViewRepository::class,  '2020#03',        5, new DateTime('2020-01-13', new DateTimeZone('UCT'))],
+        ];
+    }
+
+    /**
+     * @return array[]
+     */
+    public function notExistingObjectProvider(): array
+    {
+        return [
+            [WorkingHoursYearlyViewRepository::class,  '2022',],
+            [WorkingHoursMonthlyViewRepository::class, '2020 May',],
+            [WorkingHoursWeeklyViewRepository::class,  '2020#30',],
+        ];
+    }
+
+    /**
+     * @param string $period_class
+     * @param int    $count_records
+     *
+     * @dataProvider listObjectProvider
+     */
+    public function testFindAll(string $period_class, int $count_records): void
+    {
+        $repository = new $period_class($this->pdoObject);
+        $models = $repository->findAll();
+        $this->assertIsArray($models);
+        $this->assertContainsOnly(WorkingHoursView::class, $models);
+        $this->assertCount($count_records, $models);
+    }
+
+    /**
+     *
+     * @dataProvider existingObjectProvider
+     *
+     * @param string   $period_class
+     * @param string   $search
+     * @param int      $workingDays
+     * @param DateTime $period
+     */
+    public function testExistingFindByKey(string $period_class, string $search, int $workingDays, DateTime $period): void
+    {
+        $repository = new $period_class($this->pdoObject);
+        $model = $repository->findByKey($search);
+        $this->assertInstanceOf(WorkingHoursView::class, $model);
+        $this->assertEquals($workingDays, $model->getWorkingDays());
+        $this->assertEquals($period->format('Ymd'), $model->getPeriod()->format('Ymd'));
+    }
+
+    /**
+     * @param string $period_class
+     * @param string $search
+     *
+     * @dataProvider notExistingObjectProvider
+     *
+     */
+    public function testNotExistingFindByKey(string $period_class, string $search): void
+    {
+        $repository = new $period_class($this->pdoObject);
+        $this->expectException(RepositoryRecordNotFoundException::class);
+        $repository->findByKey($search);
+    }
+}

compose.yml

@@ -0,0 +1,26 @@
+volumes:
+  logs:
+    driver: local
+services:
+  api:
+    build: ./api/
+    environment:
+      docker: "true"
+    ports:
+      - 8090:80
+    volumes:
+      - ./api:/var/www
+      - logs:/var/www/logs
+  test-api:
+    build: ./api/
+    environment:
+      docker: "true"
+      DATABASES_HOST: psql.torsten-hettstedt.net
+      DATABASES_NAME: testdb
+      DATABASES_USER: bruce
+      DATABASES_PASS: mypass
+    ports:
+      - 8091:80
+    volumes:
+      - ./api:/var/www
+      - logs:/var/www/logs

resources/salt/add-update-record.puml

@@ -0,0 +1,11 @@
+@startuml
+'https://plantuml.com/salt
+
+salt
+{
+    Datum   |"Datum <&calendar>"
+    Uhrzeit | "Uhrzeit <&clock>"
+    [Übernehmen <&plus>]
+    [Abbrechen <&action-undo>]
+}
+@enduml

resources/salt/add-update-records-for-week.puml

@@ -0,0 +1,20 @@
+@startuml
+'https://plantuml.com/salt
+
+salt
+{
+    Woche vom <&calendar> bis zum <&calendar>
+    [<&chevron-left> Woche zurück] | [Woche vor <&chevron-right>]
+    {!
+                   Montag     |            "00:00:00 <&clock>"
+                   Dienstag   |            "00:00:00 <&clock>"
+                   Mittwoch   |            "00:00:00 <&clock>"
+                   Donnerstag |            "00:00:00 <&clock>"
+                   Freitag    |            "00:00:00 <&clock>"
+        <color:red>Samstag    | "<color:red>00:00:00 <&clock>"
+        <color:red>Sontag     | "<color:red>00:00:00 <&clock>"
+    }
+    [Übernehmen <&plus>]
+    [Abbrechen <&action-undo>]
+}
+@enduml

resources/sql/postgresql.sql

@@ -0,0 +1,45 @@
+-- # Definition der Tabelle
+-- DROP TABLE public."Arbeitszeiten";
+create table public."Arbeitszeiten"
+(
+    "Datum"       date not null,
+    "Arbeitszeit" interval(6) null,
+    constraint "Arbeitszeiten_pkey" primary key ("Datum")
+);
+
+
+-- # Definition der Ansichten
+-- ## Wöchentlich
+create view "Arbeitszeiten - Woche" ("Woche", "Gesamtarbeitszeit", "Arbeitstage", "Überstunden") as
+    select
+        to_char(date_trunc('week'::text, "Arbeitszeiten"."Datum"::timestamp with time zone),
+                'TMYYYY#WW'::text)         as "Woche",
+        sum("Arbeitszeiten"."Arbeitszeit") as "Gesamtarbeitszeit",
+        count("Arbeitszeiten"."Datum")     as "Arbeitstage",
+        sum("Arbeitszeiten"."Arbeitszeit") - count("Arbeitszeiten"."Datum") ::double precision * '08:00:00'::interval as "Überstunden"
+    from "Arbeitszeiten"
+    group by (date_trunc('week'::text, "Arbeitszeiten"."Datum"::timestamp with time zone))
+    order by (date_trunc('week'::text, "Arbeitszeiten"."Datum"::timestamp with time zone));
+
+-- ## Monatlich
+create view "Arbeitszeiten - Monat" ("Monat", "Gesamtarbeitszeit", "Arbeitstage", "Überstunden") as
+    select
+        to_char(date_trunc('month'::text, "Arbeitszeiten"."Datum"::timestamp with time zone),
+                'TMYYYY TMMonth'::text)    as "Monat",
+        sum("Arbeitszeiten"."Arbeitszeit") as "Gesamtarbeitszeit",
+        count("Arbeitszeiten"."Datum")     as "Arbeitstage",
+        sum("Arbeitszeiten"."Arbeitszeit") - count("Arbeitszeiten"."Datum") ::double precision * '08:00:00'::interval as "Überstunden"
+    from "Arbeitszeiten"
+    group by (date_trunc('month'::text, "Arbeitszeiten"."Datum"::timestamp with time zone))
+    order by (date_trunc('month'::text, "Arbeitszeiten"."Datum"::timestamp with time zone));
+
+-- ## Jährlich
+create view "Arbeitszeiten - Jahr"("Jahr", "Gesamtarbeitszeit", "Arbeitstage", "Überstunden") as
+    select
+        date_part('year'::text, "Arbeitszeiten"."Datum")::text   as "Jahr",
+        sum("Arbeitszeiten"."Arbeitszeit") as "Gesamtarbeitszeit",
+        count("Arbeitszeiten"."Datum")     as "Arbeitstage",
+        sum("Arbeitszeiten"."Arbeitszeit") - count("Arbeitszeiten"."Datum") ::double precision * '08:00:00'::interval as "Überstunden"
+    from "Arbeitszeiten"
+    group by (date_part('year'::text, "Arbeitszeiten"."Datum"))
+    order by (date_part('year'::text, "Arbeitszeiten"."Datum"));

resources/uml/Domainmodel.puml

@@ -0,0 +1,36 @@
+@startuml
+
+!define DOMAIN (M,#FFAAAA) Domain Model
+!define VIEW (V,DarkTurquoise) Domain Model - Ansicht
+
+class Arbeitszeiten <<DOMAIN>> {
+	Datum
+	Arbeitszeit
+	insert()
+	list()
+}
+
+class Arbeitszeiten-Ansicht <<VIEW>> {
+	Gesamtarbeitszeit
+	Arbeitstage
+	Überstunden
+	list()
+}
+
+class Arbeitszeiten-Woche <<VIEW>> {
+	Woche
+}
+
+class Arbeitszeiten-Monat <<VIEW>> {
+	Monat
+}
+
+class Arbeitszeiten-Jahr <<VIEW>> {
+	Jahr
+}
+
+"Arbeitszeiten-Ansicht" <|-- "Arbeitszeiten-Woche"
+"Arbeitszeiten-Ansicht" <|-- "Arbeitszeiten-Monat"
+"Arbeitszeiten-Ansicht" <|-- "Arbeitszeiten-Jahr"
+
+@enduml

resources/uml/PhysicalDataModel.puml

@@ -0,0 +1,37 @@
+@startuml
+
+!define DOMAIN (M,#FFAAAA) Domain Model
+!define TABLE (T,DarkTurquoise) Physical Data Model
+!define VIEW (V,#AAFFAA) Model View
+!define AUTO Auto Generated
+!define ID_KEY id: INTEGER <<PK>> <<AUTO>> <<Surrogate>>
+
+class Arbeitszeiten <<TABLE>> {
+	Datum: DATE
+	Arbeitszeit: INTERVAL
+}
+
+class Arbeitszeiten-Ansicht <<VIEW>> {
+	Gesamtarbeitszeit: INTERVAL
+	Arbeitstage: INTEGER
+	Überstunden: INTERVAL
+	list()
+}
+
+class Arbeitszeiten-Woche <<VIEW>> {
+	Woche: TEXT
+}
+
+class Arbeitszeiten-Monat <<VIEW>> {
+	Monat: TEXT
+}
+
+class Arbeitszeiten-Jahr <<VIEW>> {
+	Jahr: TEXT
+}
+
+"Arbeitszeiten-Ansicht" <|-- "Arbeitszeiten-Woche"
+"Arbeitszeiten-Ansicht" <|-- "Arbeitszeiten-Monat"
+"Arbeitszeiten-Ansicht" <|-- "Arbeitszeiten-Jahr"
+
+@enduml

ui/.env.example

@@ -0,0 +1,2 @@
+# Url ohne abschlißenden Slash
+API_URL= http://localhost:8080

ui/.gitignore

@@ -0,0 +1,6 @@
+.DS_Store
+node_modules
+package-lock.json
+yarn.lock
+public
+/.env

ui/package.json

@@ -0,0 +1,30 @@
+{
+  "private": true,
+  "name": "svelte-demo",
+  "scripts": {
+    "build": "rollup -c",
+    "autobuild": "rollup -c -w",
+    "dev": "run-p start:dev autobuild",
+    "start": "sirv public --single",
+    "start:dev": "sirv public --dev --single"
+  },
+  "dependencies": {
+    "ganalytics": "^3.1.2",
+    "navaid": "^1.0.2",
+    "open-iconic": "^1.1.1"
+  },
+  "devDependencies": {
+    "@iconify-icons/oi": "^1.1.0",
+    "@iconify/svelte": "^1.0.4",
+    "@rollup/plugin-commonjs": "^15.0.0",
+    "@rollup/plugin-node-resolve": "^9.0.0",
+    "@rollup/plugin-replace": "^2.3.0",
+    "dotenv": "^8.2.0",
+    "npm-run-all": "^4.1.3",
+    "rollup": "^2.30.0",
+    "rollup-plugin-svelte": "^6.0.0",
+    "rollup-plugin-terser": "^7.0.0",
+    "sirv-cli": "^1.0.8",
+    "svelte": "^3.4.4"
+  }
+}

ui/public/index.html

@@ -0,0 +1,22 @@
+<!doctype html>
+<!--suppress HtmlUnknownTarget -->
+<!--suppress JSUnresolvedLibraryURL -->
+<html lang="de">
+<head>
+	<base href="/" />
+	<meta charset="utf8">
+	<meta name="viewport" content="width=device-width">
+
+	<title>Svelte app</title>
+
+    <link rel='icon' type='image/png' href='/favicon.png'>
+	<link rel="stylesheet" href="/global.css" media="screen">
+	<link rel="stylesheet" href="/print.css" media="print">
+	<link rel="stylesheet" href="/bundle.css">
+    <script type="module" src="https://unpkg.com/dimport?module" data-main="/index.js"></script>
+    <script nomodule src="https://unpkg.com/dimport/nomodule" data-main="/index.js"></script>
+</head>
+
+<body>
+</body>
+</html>

ui/public/less/global.less

@@ -0,0 +1,19 @@
+// Einstellungen auf die Grundlagen zurücksetzen,
+// beinhaltet auch Einstellungen für die neuen HTML5-Tags
+//noinspection CssUnknownTarget
+@import "meyer_resets.css";
+// Import und Einbindung der Zeichensätze
+@import "lesslib/fonts.less";
+// Bestimmung der Farben
+@import "lesslib/colors.less";
+// Mixins des Layouts
+@import "lesslib/mixins.less";
+// Layout-Unabhängige Mixins
+@import "lesslib/mixins.framework.less";
+// Bestimmung des grundsätzlichen Erscheinungsbildes der einzelnen Elemente,
+// einschließlich des Hauptbereiches
+@import "lesslib/basics.less";
+// Darstellung unabhängig der Darstellungsgrößen
+@import "lesslib/layout.less";
+// Darstellung in den verschiedenen Ansichtsgrößen
+@import "lesslib/media_queries.less";

ui/public/less/lesslib/basics.less

@@ -0,0 +1,76 @@
+html {
+    font-size: 100%;
+}
+
+body {
+    color: #000;
+    font-size: 1em;
+    font-family: OpenSans, "Lucida Grande", "Lucida Sans Unicode", Verdana, Helvetica, Arial, sans-serif;
+    text-align: left;
+    background-color: #fff;
+}
+
+strong, b {
+    font-weight: bold;
+}
+
+em, i {
+    font-style: italic;
+}
+
+small {
+    font-size: 0.8rem;
+}
+
+section article {
+    font-size: 95%;
+    p, ul, ol, dl {
+        line-height: 1.5em;
+        .hyphens();
+        font-size: 1.00em;
+    }
+    p {
+        text-align: justify;
+    }
+    ul, ol {
+        li {
+            list-style: initial;
+        }
+    }
+    dl {
+        dt {
+            font-weight: 600;
+        }
+    }
+    h1, h2, h3 {
+        font-weight: bold;
+    }
+    h1 {
+        font-size: 1.50em;
+    }
+    h2 {
+        font-size: 1.30em;
+    }
+    h3 {
+        font-size: 1.20em;
+    }
+    table {
+        colgroup:not(:first-child) col:first-child{
+            border-left: solid thin;
+        }
+        thead {
+            th {
+                font-size: 100%;
+                font-weight: bold;
+            }
+        }
+    }
+    form {
+        fieldset {
+            legend {
+                font-size: 1.30em;
+                font-weight: bold;
+            }
+        }
+    }
+}

ui/public/less/lesslib/colors.less

@@ -0,0 +1,14 @@
+/**
+Definition der Farben
+*/
+
+@hueMain: 35;
+@hueSub: 215;
+
+@mainColor: hsl(@hueMain, 90%, 29%);
+@redColor: hsl(0, 90%, 29%);
+@mainColorDark: darken(@mainColor,66%,relativ);
+@mainColorLight: lighten(@mainColor,66%,relativ);
+@subColor: hsl(@hueSub, 90%, 29%);
+@subColorDark: darken(@subColor,66%,relativ);
+@subColorLight: lighten(@subColor,66%,relativ);

ui/public/less/lesslib/fonts.less

@@ -0,0 +1,43 @@
+@font-face {
+    font-family: OpenSans;
+    src: url(../fonts/opensans-regular.eot);
+    src: url(../fonts/opensans-regular.eot?#iefix) format("embedded-opentype"),
+        url(../fonts/opensans-regular.woff) format("woff"),
+        url(../fonts/opensans-regular.ttf) format("truetype"),
+        url(../fonts/opensans-regular.svg#open_sansregular) format("svg");
+    font-weight: normal;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: OpenSans;
+    src: url(../fonts/opensans-italic.eot);
+    src: url(../fonts/opensans-italic.eot?#iefix) format("embedded-opentype"),
+        url(../fonts/opensans-italic.woff) format("woff"),
+        url(../fonts/opensans-italic.ttf) format("truetype"),
+        url(../fonts/opensans-italic.svg#open_sansitalic) format("svg");
+    font-weight: normal;
+    font-style: italic;
+}
+
+@font-face {
+    font-family: OpenSans;
+    src: url(../fonts/opensans-bold.eot);
+    src: url(../fonts/opensans-bold.eot?#iefix) format("embedded-opentype"),
+        url(../fonts/opensans-bold.woff) format("woff"),
+        url(../fonts/opensans-bold.ttf) format("truetype"),
+        url(../fonts/opensans-bold.svg#open_sansbold) format("svg");
+    font-weight: bold;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: OpenSans;
+    src: url(../fonts/opensans-bolditalic.eot);
+    src: url(../fonts/opensans-bolditalic.eot?#iefix) format("embedded-opentype"),
+        url(../fonts/opensans-bolditalic.woff) format("woff"),
+        url(../fonts/opensans-bolditalic.ttf) format("truetype"),
+        url(../fonts/opensans-bolditalic.svg#open_sansbold_italic) format("svg");
+    font-weight: bold;
+    font-style: italic;
+}

ui/public/less/lesslib/layout.less

@@ -0,0 +1,153 @@
+@breiteMainBereich: 70rem;
+@breiteTextBereich: 60rem;
+@breiteNavBereich: @breiteMainBereich - @breiteTextBereich;
+
+html {
+    body {
+        background: @mainColorLight;
+        > header, > footer {
+            color: @mainColorDark;
+            background: @mainColor;
+            font-family: serif;
+            h1 {
+                font-size: 3rem;
+                text-align: center;
+            }
+            p {
+                text-indent: inherit;
+                &:first-letter {
+                    font-size: inherit;
+                }
+                font-style: italic;
+            }
+        }
+        > header h1 {
+            margin: 1rem auto;
+        }
+        > footer {
+            color: contrast(@mainColorDark);
+        }
+        & > nav {
+            ul {
+                background: darken(@mainColorLight,33%,relativ);
+                li {
+                    font-weight: bold;
+                    &:not(:first-child) {
+                        border-left: @mainColorDark solid thin;
+                    }
+                    a {
+                        text-decoration: none;
+                        color: @mainColorDark;
+                    }
+                    &:hover {
+                        background: lighten(@mainColor,20%,relativ);
+                        a {
+                            color: lighten(@mainColor,66%,relativ);
+                        }
+                    }
+                    &.selected, &.selected:hover {
+                        background: lighten(@mainColor,10%,relativ);
+                        a {
+                            color: lighten(@mainColor,66%,relativ);
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+main {
+    * {
+        border-style: none;
+        border-color: @mainColorDark;
+        border-width: medium;
+    }
+    section {
+        @sectionMargin: 1rem;
+        h1, h2 {
+            margin: @sectionMargin;
+        }
+        p, ul, ol, dl {
+            margin: @sectionMargin;
+            text-indent: @sectionMargin * 2;
+        }
+        table {
+            thead {
+                tr:last-child {
+                    td, th {
+                        border-bottom: @mainColor solid thin;
+                    }
+                }
+            };
+            tbody {
+                td.absence-time {
+                    color: @redColor;
+                    text-decoration-line: underline;
+                    text-decoration-style: dashed;
+                }
+            }
+        }
+        form {
+            @formLabelWidth: 10rem;
+            @formItemWidth: 40rem;
+            fieldset {
+                width: @formItemWidth + @formLabelWidth + 2rem;
+                margin: 1rem auto;
+                border-style: solid ;
+                border-color: @mainColor;
+                padding: @sectionMargin;
+                &.tasten {
+                    border: none;
+                    background-color: @mainColorLight;
+                }
+                legend {
+                    margin: @sectionMargin;
+                    margin-left: @sectionMargin * 2;
+                }
+                div {
+                    &  > label {
+                        width: @formLabelWidth;
+                        display: inline-block;
+                        margin: 0.5rem;
+                    }
+                    input {
+                        display: inline-block;
+                        width: @formItemWidth;
+                        padding: 0.25rem;
+                        margin-bottom: 1.0rem;
+                        border-style:  solid;
+                        border-width: thin;
+                    }
+                }
+            }
+        }
+        button {
+            .button(@mainColor, spin(lighten(@mainColor,66%,relativ),@subColor));
+            &.sub-button {
+                .button(lighten(@mainColor,20%,relativ), spin(@mainColor,@subColor));
+            }
+        }
+        footer {
+            text-align: right;
+            padding: 0;
+            p {
+                padding: 0.5rem;
+                display: inline-block;
+                margin: inherit;
+                text-indent: inherit;
+                &:first-letter {
+                    font-size: inherit;
+                }
+                background: @mainColorLight ;
+                color: @mainColor ;
+                font-style: italic;
+                font-size: 85%;
+            }
+            nav li {
+                padding: 0.5rem;
+            }
+            border-bottom-style: solid;
+        }
+    }
+}

ui/public/less/lesslib/media_queries.less

@@ -0,0 +1,306 @@
+//Media Queries
+
+@media print {
+    * {
+        font-size: 10pt;
+    }
+    header, footer, main, nav, aside {
+        body > & {
+            width: 19cm;
+            margin: auto;
+            .border-box();
+        }
+    }
+    header, footer{
+        padding: 0.5rem;
+        ;
+    }
+    body {
+        & > header {
+            font-size: 200%;
+            font-weight: bolder;
+        }
+        & > nav, > header {
+            display: none;
+        }
+    }
+    main {
+        padding: 1.5rem 0.5rem 3.25rem;
+        .flexKinder(flow,'row');
+        width: @breiteTextBereich;
+        section {
+            padding: 0 0.5rem;
+            h1, h2, p {
+                margin-bottom: 1rem;
+            }
+            footer {
+                padding: 0;
+                p {
+                    padding: 0.5rem;
+                    font-size: 85%;
+                    margin-bottom: 0;
+                }
+            }
+            article.liste {
+                page-break-after: always;
+            }
+        }
+        h1, h2 {
+            margin-left: 5em;
+        }
+        h1 {
+            font-size: 2em;
+        }
+        h2 {
+            font-size: 1.75em;
+        }
+        table {
+            margin: auto;
+            td, th {
+                padding: 0.5rem;
+                collapse: true;
+            }
+        }
+    }
+    aside {
+        padding-top: 2rem;
+        .flexKinder(flow,'row');
+        width: @breiteNavBereich;
+    }
+}
+
+@media screen and (min-width: 831px) {
+    header, footer, main, nav, aside {
+        body > & {
+            width: @breiteMainBereich;
+            margin: auto;
+            .border-box();
+        }
+    }
+    header, footer{
+        padding: 0.5rem;
+    }
+    body {
+        & > header {
+            font-size: 200%;
+            font-weight: bolder;
+        }
+        & > nav {
+            ul {
+                .flexEltern();
+                margin: 0;
+                li {
+                    display: inline-block;
+                    height: 1.5rem;
+                    padding: 0.5rem 1rem;
+                }
+            }
+        }
+    }
+    main {
+        padding: 1.5rem 0.5rem 3.25rem;
+        .flexKinder(flow,'row');
+        width: @breiteTextBereich;
+        section {
+            padding: 0 0.5rem;
+            h1, h2, p {
+                margin-bottom: 1rem;
+            }
+            footer {
+                padding: 0;
+                p {
+                    padding: 0.5rem;
+                    font-size: 85%;
+                    margin-bottom: 0;
+                }
+            }
+        }
+        h1, h2 {
+            margin-left: 5em;
+        }
+        h1 {
+            font-size: 2em;
+        }
+        h2 {
+            font-size: 1.75em;
+        }
+        table {
+            margin: auto;
+            td, th {
+                padding: 0.5rem;
+            }
+        }
+    }
+    aside {
+        padding-top: 2rem;
+        .flexKinder(flow,'row');
+        width: @breiteNavBereich;
+    }
+}
+
+@media screen and (max-width: 830px) {
+    html body {
+        @boxHeight: 5rem;
+        & > header {
+            height: @boxHeight;
+            font-size: @boxHeight;
+            text-align: center;
+            padding: 1rem;
+        }
+        & > footer {
+            padding: 1rem;
+        }
+        & > nav {
+            ul {
+                li {
+                    display: inline-block;
+                    border: none;
+                    width: auto;
+                    height: 1.5em;
+                    padding-top: 0.25em;
+                    a {
+                        padding: 0.75rem;
+                    }
+                    &:not(:first-child) {
+                        border-left: none;
+                    }
+                }
+            }
+        }
+        main section {
+            header {
+                padding: 0 0.5rem;
+                h1, h2, p {
+                    margin-bottom: 1rem;
+                }
+                h1, h2 {
+                    margin-left: 5em;
+                }
+                h1 {
+                    font-size: 2em;
+                }
+                h2 {
+                    font-size: 1.75em;
+                }
+            }
+            form {
+                @formLabelWidth: 10rem;
+                @formItemWidth: 40rem;
+                @sectionMargin: 1rem;
+                margin: @sectionMargin;
+                fieldset {
+                    width: auto;
+                    margin: 1rem auto;
+                    padding: @sectionMargin;
+                    legend {
+                        margin: @sectionMargin;
+                        margin-left: @sectionMargin * 2;
+                    }
+                    div {
+                        &  > label {
+                            width: auto;
+                            display: inline-block;
+                            margin: 0.5rem;
+                        }
+                        input, textarea {
+                            display: inline-block;
+                            width: auto;
+                            padding: 0.25rem;
+                            margin: 0.5rem;
+                            margin-bottom: 1.0rem;
+                            border-style:  solid;
+                            border-width: thin;
+                        }
+                        div.radio-button {
+                            padding-left: 20%;
+                            label, input {
+                                display: inline;
+                                width: auto;
+                            }
+                            input {
+                                margin-top: inherit;
+                                margin-right: 1rem;
+                                margin-left: 1rem;
+                                margin-bottom: inherit;
+                            }
+                        }
+                        textarea {
+                            height: 10rem;
+                        }
+                        ul.suche {
+                            width: 30rem;
+                            margin-left: @formLabelWidth + 1.5rem;
+                            margin-top: -1rem;
+                            background: white;
+                            position: absolute;
+                            border: solid thin;
+                            li {list-style: none;
+                                text-indent: 0;
+                                cursor: pointer;
+                                &:hover {
+                                    background: @mainColorLight;
+                                    color: @mainColor;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+        }
+        table {
+            width: 90%;
+            margin: 5%;
+            td, th {
+                padding: 0.25rem;
+            }
+            colgroup:not(:first-child) col:first-child{
+                border-left: solid thin;
+            }
+            thead {
+                th {
+                    font-size: 100%;
+                    font-weight: bold;
+                }
+            }
+        }
+    }
+}
+@media screen and (max-width: 720px) {
+    html body {
+        @boxHeight: 2.5rem;
+        & > header {
+            height: @boxHeight;
+            font-size: @boxHeight;
+            text-align: center;
+            padding: 1rem;
+        }
+
+        & > nav {
+            .hamburgerMenu();
+        }
+        main section header {
+            h1, h2 {
+                text-align: center;
+                margin: 0.5rem auto;
+            }
+        }
+        table {
+            width: 100%;
+            margin: 1rem 0;
+            td, th {
+                padding: 0.25rem;
+            }
+            colgroup:not(:first-child) col:first-child{
+                border-left: solid thin;
+            }
+            thead {
+                th {
+                    font-size: 100%;
+                    font-weight: bold;
+                    .hyphens();
+                }
+            }
+        }
+    }
+}

ui/public/less/lesslib/mixins.framework.less

@@ -0,0 +1,145 @@
+.hyphens() {
+	-webkit-hyphens: auto;
+	-moz-hyphens: auto;
+	hyphens: auto;
+}
+
+.border-box() {
+	-webkit-box-sizing: border-box;
+	-moz-box-sizing: border-box;
+	box-sizing: border-box;
+}
+
+.vertical-gradient(@stop1, @stop2) {
+	.gradient(0deg, @stop1, @stop2);
+}
+
+.horizontal-gradient(@stop1, @stop2) {
+	.gradient(-90deg, @stop1, @stop2);
+}
+
+.gradient(@winkel, @stop1, @stop2) {
+	@winkelOld: @winkel + 90deg;
+	@groundColor: @stop2;
+	background: @groundColor -moz-linear-gradient(@winkelOld, @stop2, @stop1);
+	background: @groundColor -webkit-linear-gradient(@winkelOld, @stop2, @stop1);
+	background: @groundColor -o-linear-gradient(@winkelOld, @stop2, @stop1);
+	background: @groundColor -ms-linear-gradient(@winkelOld, @stop2, @stop1);
+	background: @groundColor linear-gradient(@winkel, @stop2, @stop1);
+	background-repeat: no-repeat;
+}
+
+.box-shadow(...) {
+	-webkit-box-shadow: @arguments;
+	-moz-box-shadow: @arguments;
+	box-shadow: @arguments;
+}
+
+.border-radius(...) {
+	-webkit-border-radius: @arguments;
+	-moz-border-radius: @arguments;
+	border-radius: @arguments;
+}
+
+.nowrap() {
+	display: block;
+	white-space: nowrap;
+	overflow: hidden;
+	text-overflow: ellipsis;
+}
+
+.hamburgerMenu() {
+	color: white;
+	width: 3rem;
+	height: 2rem;
+	top: 0.25rem;
+	left: 0.25rem;
+	.border-radius(4px);
+	border: none;
+	.vertical-gradient(@mainColorDark; @mainColor);
+	> ul {
+		height: auto;
+		width: auto;
+		position: absolute;
+		left: 0;
+		top: 100%;
+		background: fade(@mainColorDark,80%);
+		.border-radius(5px);
+		display: none;
+		> li {
+			display: block;
+			text-align: left;
+			line-height: normal;
+			border: none;
+			&:not(:first-child) {
+				border-top: 1px #888 solid;
+			}
+			a {
+				.nowrap();
+				display: block;
+				height: auto;
+				width: auto;
+				padding: 0.5rem 1rem;
+				color: white;
+				&:hover,
+					&:focus {
+					color: white;
+					.vertical-gradient(@mainColorLight; @mainColor);
+				}
+			}
+			&:first-child {
+				a {
+					.border-radius( 5px 5px 0 0 );
+				}
+			}
+			&:last-child {
+				a {
+					.border-radius( 0 0 5px 5px );
+				}
+			}
+		}
+	}
+	&:hover, &:focus, &:active, &:checked {
+		ul {
+			display: block;
+		}
+	}
+	&:before {
+		content: "\2261";
+		font-size: 2rem;
+		text-align: center;
+		line-height: 0.8em;
+		display: block;
+		cursor: pointer;
+	}
+}
+
+.flexEltern() {
+	display:-ms-flexbox;
+	display: flexbox;
+	display: -webkit-flex;
+	display: flex;
+}
+
+.flexEltern(column) {
+	display:-ms-flexbox;
+	display: flexbox;
+	display: -webkit-flex;
+	display: flex;
+	-webkit-flex-direction: column;
+	-ms-flex-direction: column;
+	flex-direction: column;
+}
+
+.flexKinder(flow, @rest...) {
+	-webkit-flex-flow: @rest;
+	-ms-flex-flow: @rest;
+	flex-flow: @rest;
+}
+
+.flexKinder(glow, @num) {
+	-webkit-flex-grow: @num;
+	-ms-flex: @num;
+	flex: @num;
+	flex-grow: @num;
+}

ui/public/less/lesslib/mixins.less

@@ -0,0 +1,16 @@
+.button(@color, @colorFont) {
+    @colorBackground: @color;
+    @colorBackgroundLight: lighten(@colorBackground,50%,relativ);
+    @colorShadow: fade(@colorBackground,50%);
+    height: 2.5em;
+    .border-radius(1.25em);
+    padding: 0.5em 1.25em;
+    .vertical-gradient(@colorBackgroundLight, @colorBackground);
+    .box-shadow(0.1em 0.2em 0.5em @colorShadow);
+    color: @colorFont;
+    font-weight: bold;
+    &:hover {
+        .vertical-gradient(@colorBackground, @colorBackgroundLight);
+    }
+    margin: 0.25rem;
+}

ui/public/less/lesslib/print/basics.less

@@ -0,0 +1,80 @@
+html {
+    font-size: 100%;
+}
+
+body {
+    color: #000;
+    font-size: 1em;
+    font-family: OpenSans, "Lucida Grande", "Lucida Sans Unicode", Verdana, Helvetica, Arial, sans-serif;
+    text-align: left;
+    background-color: #fff;
+}
+
+strong, b {
+    font-weight: bold;
+}
+
+em, i {
+    font-style: italic;
+}
+
+small {
+    font-size: 0.8rem;
+}
+
+section article {
+    font-size: 95%;
+    p, ul, ol, dl {
+        line-height: 1.5em;
+        //noinspection TaskProblemsInspection,LessResolvedByNameOnly
+        .hyphens();
+        font-size: 1.00em;
+    }
+    p {
+        text-align: justify;
+    }
+    ul, ol {
+        li {
+            list-style: initial;
+        }
+    }
+    dl {
+        dt {
+            font-weight: 600;
+        }
+    }
+    h1, h2, h3 {
+        font-weight: bold;
+    }
+    h1 {
+        font-size: 1.50em;
+    }
+    h2 {
+        font-size: 1.30em;
+    }
+    h3 {
+        font-size: 1.20em;
+    }
+    table {
+        thead {
+            th {
+                font-size: 100%;
+                font-weight: bold;
+            }
+        }
+    }
+    form {
+        fieldset {
+            legend {
+                font-size: 1.30em;
+                font-weight: bold;
+            }
+            div.zelle > label {
+
+            }
+        }
+    }
+    &.http-error {
+        display: none;
+    }
+}

ui/public/less/lesslib/print/colors.less

@@ -0,0 +1,13 @@
+/**
+Definition der Farben
+*/
+
+@hueMain: 180;
+@hueSub: 60;
+
+@mainColor: hsl(@hueMain, 90%, 29%);
+@mainColorDark: darken(@mainColor,66%,relativ);
+@mainColorLight: lighten(@mainColor,66%,relativ);
+@subColor: hsl(@hueSub, 90%, 29%);
+@subColorDark: darken(@subColor,66%,relativ);
+@subColorLight: lighten(@subColor,66%,relativ);

ui/public/less/lesslib/print/layout.less

@@ -0,0 +1,99 @@
+html {
+    body {
+        > header, > footer {
+            background: none;
+            font-family: serif;
+            h1 {
+                font-size: 3rem;
+                text-align: left;
+            }
+            p {
+                text-indent: inherit;
+                &:first-letter {
+                    font-size: inherit;
+                }
+                font-style: italic;
+            }
+        }
+        > header {
+            border-bottom: black solid thick;
+            h1 {
+                margin: 1rem;
+            }
+        }
+        > nav {
+            display: none;
+        }
+        > footer {
+            color: contrast(@mainColor);
+        }
+    }
+}
+
+main {
+    * {
+        border-style: none;
+        border-color: @mainColorDark;
+        border-width: medium;
+    }
+    section {
+        @sectionMargin: 1rem;
+        header {
+            text-align: center;
+        }
+        h1, h2 {
+            margin: @sectionMargin;
+        }
+        p {
+            margin: @sectionMargin;
+            text-indent: @sectionMargin * 2;
+        }
+        table {
+            colgroup:not(:first-child) col:first-child{
+                border-left: solid medium;
+            }
+            thead {
+                tr:last-child {
+                    td, th {
+                        border-bottom: @mainColorDark solid thick;
+                    }
+                }
+            }
+            tbody {
+                th {
+                    font-weight: bold;
+                    text-align: center;
+                    padding: 1rem 0.5rem;
+                }
+                th, td {
+                    padding: 0.5rem;
+                    border-bottom: solid thin;
+                }
+            }
+        }
+        form {
+            display: none;
+        }
+        button {
+            display: none;
+        }
+        footer {
+            text-align: right;
+            padding: 0;
+            p {
+                padding: 0.5rem;
+                display: inline-block;
+                margin: inherit;
+                text-indent: inherit;
+                &:first-letter {
+                    font-size: inherit;
+                }
+                background: @mainColorLight ;
+                color: @mainColor ;
+                font-style: italic;
+                font-size: 85%;
+            }
+            border-bottom-style: solid;
+        }
+    }
+}

ui/public/less/print.less

@@ -0,0 +1,15 @@
+// Einstellungen auf die Grundlagen zurücksetzen,
+// beinhaltet auch Einstellungen für die neuen HTML5-Tags
+//noinspection CssUnknownTarget
+@import "meyer_resets.css";
+// Bestimmung der Farben
+@import "lesslib/colors.less";
+// Mixins des Layouts
+@import "lesslib/mixins.less";
+// Layout-Unabhängige Mixins
+@import "lesslib/mixins.framework.less";
+// Bestimmung des grundsätzlichen Erscheinungsbildes der einzelnen Elemente,
+// einschließlich des Hauptbereiches
+@import "lesslib/print/basics.less";
+// Darstellung unabhängig der Darstellungsgrößen
+@import "lesslib/print/layout.less";

ui/public/meyer_resets.css

@@ -0,0 +1,51 @@
+/* http://meyerweb.com/eric/tools/css/reset/
+   v2.0 | 20110126
+   License: none (public domain)
+*/
+@media screen {
+    html, body, div, span, applet, object, iframe,
+    h1, h2, h3, h4, h5, h6, p, blockquote, pre,
+    a, abbr, acronym, address, big, cite, code,
+    del, dfn, em, img, ins, kbd, q, s, samp,
+    small, strike, strong, sub, sup, tt, var,
+    b, u, i, center,
+    dl, dt, dd, ol, ul, li,
+    fieldset, form, label, legend,
+    table, caption, tbody, tfoot, thead, tr, th, td,
+    article, aside, canvas, details, embed,
+    figure, figcaption, footer, header, hgroup,
+    menu, nav, output, ruby, section, summary,
+    time, mark, audio, video {
+        margin: 0;
+        padding: 0;
+        border: 0;
+        font: inherit;
+        font-size: 100%;
+        vertical-align: baseline;
+    }
+    /* HTML5 display-role reset for older browsers */
+    article, aside, details, figcaption, figure,
+    main, /* Korektur: Torsten Lücke 2016-09-01 */
+    footer, header, hgroup, menu, nav, section {
+        display: block;
+    }
+    body {
+        line-height: 1;
+    }
+    ol, ul {
+        list-style: none;
+    }
+    blockquote, q {
+        quotes: none;
+    }
+    blockquote:before, blockquote:after,
+    q:before, q:after {
+        content: '';
+        content: none;
+    }
+    table {
+        border-collapse: collapse;
+        border-spacing: 0;
+    }
+}
+/* END:  meyer_ressets */

ui/rollup.config.js

@@ -0,0 +1,51 @@
+import svelte from 'rollup-plugin-svelte';
+import replace from '@rollup/plugin-replace';
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
+import { terser } from 'rollup-plugin-terser';
+import {config} from 'dotenv';
+
+const production = !process.env.ROLLUP_WATCH;
+
+export default {
+	input: 'src/index.js',
+	output: {
+		name: 'app',
+		format: 'esm',
+		sourcemap: true,
+		dir: 'public',
+	},
+	preserveEntrySignatures: false,
+	plugins: [
+		svelte({
+			// enable run-time checks when not in production
+			dev: !production,
+			// we'll extract any component CSS out into
+			// a separate file — better for performance
+			css: css => {
+				css.write('bundle.css');
+			}
+		}),
+
+		// If you have external dependencies installed from
+		// npm, you'll most likely need these plugins. In
+		// some cases you'll need additional configuration —
+		// consult the documentation for details:
+		// https://github.com/rollup/rollup-plugin-commonjs
+		resolve(),
+		commonjs(),
+
+		replace({
+			'process.env.NODE_ENV': JSON.stringify(production ? 'production' : 'development'),
+            'env': JSON.stringify({...config().parsed /* attached the .env config*/})
+		}),
+
+		// If we're building for production (npm run build
+		// instead of npm run dev), minify
+		production && terser()
+	],
+
+	watch: {
+		clearScreen: false
+	}
+};

ui/src/components/App.svelte

@@ -0,0 +1,57 @@
+<header>
+    Arbeitszeiten
+</header>
+<Nav {active} />
+<main>
+    <svelte:component this={Route} {params} />
+</main>
+<footer><p>© Torsten Lücke 2021</p></footer>
+
+<script>
+	import Navaid from 'navaid';
+	import { onDestroy } from 'svelte';
+	import Nav from './Nav.svelte';
+
+	let Route, params={}, active;
+	let uri = location.pathname;
+	$: active = uri.split('/').pop() || 'home';
+
+	function run(thunk, obj) {
+		const target = uri;
+
+		thunk.then(m => {
+			if (target !== uri) return;
+
+			params = obj || {};
+
+			if (m.preload) {
+				m.preload({ params }).then(() => {
+					if (target !== uri) return;
+					Route = m.default;
+					window.scrollTo(0, 0);
+				});
+			} else {
+				Route = m.default;
+				window.scrollTo(0, 0);
+			}
+		});
+	}
+
+	function track(obj) {
+		uri = obj.state || obj.uri || location.pathname;
+	}
+
+	addEventListener('replacestate', track);
+	addEventListener('pushstate', track);
+	addEventListener('popstate', track);
+
+	const router = Navaid('/')
+		.on('/', () => run(import('../routes/Home.svelte')))
+		.on('/views/weekly', () => run(import('../routes/WeeklyViews.svelte')))
+		.on('/views/monthly', () => run(import('../routes/MonthlyViews.svelte')))
+		.on('/views/yearly', () => run(import('../routes/YearlyViews.svelte')))
+		.on('/working-hours', () => run(import('../routes/WorkingHours.svelte')))
+		.listen();
+
+	onDestroy(router.unlisten);
+</script>

ui/src/components/Nav.svelte

@@ -0,0 +1,15 @@
+<!--suppress HtmlUnknownTarget -->
+<nav>
+	<ul>
+		<li class="{ isActive('home') }"><a href="/">Home</a></li>
+		<li class="{ isActive('weekly') }"><a href="/views/weekly">Wochenansicht</a></li>
+		<li class="{ isActive('monthly') }"><a href="/views/monthly">Monatsansicht</a></li>
+		<li class="{ isActive('yearly') }"><a href="/views/yearly">Jahresansicht</a></li>
+		<li class="{ isActive('working-hours') }"><a href="/working-hours">Einträge</a></li>
+	</ul>
+</nav>
+
+<script>
+	export let active;
+	$: isActive = str => active === str ? 'selected' : '';
+</script>

ui/src/index.js

@@ -0,0 +1,5 @@
+import App from './components/App.svelte';
+
+new App({
+	target: document.body
+});

ui/src/routes/Home.svelte

@@ -0,0 +1,5 @@
+<Views />
+
+<script>
+    import Views from "./WeeklyViews.svelte";
+</script>

ui/src/routes/MonthlyViews.svelte

@@ -0,0 +1,31 @@
+<script>
+    import Views from "./Views.svelte";
+    export let params;
+    params = {
+        title: 'Monatsansicht',
+        records: [],
+        isLoading: true
+    }
+    const View = {
+        'browse': () => {
+            fetch(env.API_URL + '/views/working-hours/monthly')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        }
+    };
+    View.browse();
+</script>
+
+<Views {params} />

ui/src/routes/Views.svelte

@@ -0,0 +1,54 @@
+<script>
+    export let params;
+    console.log(params)
+    if (!String.prototype.startsWith) {
+        String.prototype.startsWith = function(searchString, position) {
+            position = position || 0;
+            return this.indexOf(searchString, position) === position;
+        };
+    }
+    $: isNegative = time => time.startsWith('-') ? 'absence-time' : '';
+    $: cutMinusChar = time => time.startsWith('-') ? time.substr(1) : time;
+</script>
+
+<svelte:head>
+	<title>{params.title}</title>
+</svelte:head>
+
+<section id="list-records">
+    <header>
+        <h1>{params.title}</h1>
+    </header>
+    <article>
+        {#if params.isLoading === true}
+            <p>Loading...</p>
+        {:else}
+            <table>
+                <colgroup>
+                    <col />
+                    <col />
+                    <col />
+                    <col />
+                </colgroup>
+                <thead>
+                <tr>
+                    <th>Zeitraum</th>
+                    <th>Arbeitstage</th>
+                    <th>Arbeitsstunden</th>
+                    <th>Über- / Unterstunden</th>
+                </tr>
+                </thead>
+                <tbody>
+                {#each params.records as record}
+                    <tr>
+                        <td>{record.period}</td>
+                        <td>{record.workingDays}</td>
+                        <td>{record.totalHours}</td>
+                        <td class="{ isNegative(record.overtime) }">{cutMinusChar(record.overtime)}</td>
+                    </tr>
+                {/each}
+                </tbody>
+            </table>
+        {/if}
+    </article>
+</section>

ui/src/routes/WeeklyViews.svelte

@@ -0,0 +1,31 @@
+<script>
+    import Views from "./Views.svelte";
+    export let params;
+    params = {
+        title: 'Wochenansicht',
+        records: [],
+        isLoading: true
+    }
+    const View = {
+        'browse': () => {
+            fetch(env.API_URL + '/views/working-hours/weekly')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        }
+    };
+    View.browse();
+</script>
+
+<Views {params} />

ui/src/routes/WorkingHours.svelte

@@ -0,0 +1,216 @@
+<script>
+    export let params;
+    let title = "Bearbeitung Einträge"
+    import IconifyIcon from '@iconify/svelte';
+    import wrenchIcon from '@iconify-icons/oi/wrench';
+    import checkIcon from '@iconify-icons/oi/check';
+    import xIcon from '@iconify-icons/oi/x';
+    import documentIcon from '@iconify-icons/oi/document';
+    let activeRecord = null;
+    let newRecord = false;
+    params = {
+        title: 'Einträge',
+        records: [],
+        isLoading: true
+    }
+    const Records = {
+        'browse': () => {
+            // noinspection JSUnresolvedVariable
+            fetch(env.API_URL + '/working-hours')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    Controller.cancelActiveRecord();
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        },
+        'read': date => {
+            // noinspection JSUnresolvedVariable
+            fetch(env.API_URL + '/working-hours/' + date)
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    activeRecord = data;
+                    if (date === null) {
+                        Controller.listRecords();
+                    }
+                })
+                .catch(err => {
+                    console.log(err);
+                });
+        },
+        'add': async record => {
+            console.log(record);
+            // noinspection JSUnresolvedVariable
+            await fetch(env.API_URL + '/working-hours', {
+                method: 'POST',
+                mode: 'cors',
+                cache: 'no-cache',
+                credentials: 'omit',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify(record)
+            })
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                })
+                .then(() => {
+                    Controller.listRecords();
+                })
+                .catch(err => {
+                    console.log(err);
+                });
+        },
+        'update': async (date, record) => {
+            console.log(record);
+            // noinspection JSUnresolvedVariable
+            await fetch(env.API_URL + '/working-hours/' + date, {
+                method: 'PUT',
+                mode: 'cors',
+                cache: 'no-cache',
+                credentials: 'omit',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify(record)
+            })
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                })
+                .then(() => {
+                    Controller.listRecords();
+                })
+                .catch(err => {
+                    console.log(err);
+                });
+        }
+    };
+    const Controller = {
+        'listRecords': () => {
+            Controller.cancelActiveRecord();
+            Records.browse();
+        },
+        'newRecord': () => {
+            activeRecord = {workingTime: '00:00:00'};
+            newRecord = true;
+        },
+        'saveRecord': () => {
+            if (newRecord === true) {
+                Records.add(activeRecord);
+            } else {
+                Records.update(activeRecord.workingDay, activeRecord);
+            }
+        },
+        'selectActiveRecord': record => Records.read(record.workingDay),
+        'cancelActiveRecord': () => {
+            activeRecord = null;
+            newRecord = false;
+        }
+    };
+    const initSite = () => {
+        Controller.listRecords()
+    };
+    initSite()
+</script>
+
+<svelte:head>
+    <title>{title}</title>
+</svelte:head>
+
+{#if activeRecord === null}
+    <section id="list-records">
+        <header>
+            <h1>{title}</h1>
+        </header>
+        <article>
+            {#if params.isLoading === true}
+                <p>Loading...</p>
+            {:else}
+                <!--suppress HtmlUnknownTarget -->
+                <form action="/working-hours">
+                    <fieldset>
+                        <button on:click={Controller.newRecord} type="button">Neuer Eintrag
+                            <IconifyIcon icon={documentIcon}/>
+                        </button>
+                    </fieldset>
+                </form>
+                <table>
+                    <colgroup>
+                        <col />
+                        <col />
+                        <col />
+                    </colgroup>
+                    <thead>
+                    <tr>
+                        <th>Datum</th>
+                        <th>Arbeitsstunden</th>
+                        <th>Aktionen</th>
+                    </tr>
+                    </thead>
+                    <tbody>
+                    {#each params.records as record}
+                        <tr>
+                            <td>{record.workingDay}</td>
+                            <td>{record.workingTime}</td>
+                            <td>
+                                <button on:click={() => Controller.selectActiveRecord(record)} type="button">Bearbeiten
+                                    <IconifyIcon icon={wrenchIcon}/>
+                                </button>
+                            </td>
+                        </tr>
+                    {/each}
+                    </tbody>
+                </table>
+            {/if}
+        </article>
+    </section>
+{:else}
+    <section id="edit-record">
+        <header>
+            <h1>{title}</h1>
+        </header>
+        <article>
+            <!--suppress HtmlUnknownTarget -->
+            <form action="/working-hours" name="editRecord">
+                <fieldset name="record-data">
+                    <div>
+                        <label for="workingDay">Arbeitstag</label>
+                        <input bind:value={activeRecord.workingDay} type="date"
+                               id="workingDay" required pattern="\d\{4}-[0-1]\d-[0-3]\d\">
+                    </div>
+                    <div>
+                        <label for="workingTime">Arbeitszeit</label>
+                        <input bind:value={activeRecord.workingTime} placeholder="Arbeitszeit" type="time"
+                               id="workingTime" required pattern="[0-5]\d:[0-5]\d:[0-5]\d">
+                    </div>
+                </fieldset>
+                <fieldset name="buttons">
+                    <button on:click={Controller.saveRecord} type="button">Übernehmen
+                        <IconifyIcon icon={checkIcon} color="green"/>
+                    </button>
+                    <button on:click={Controller.cancelActiveRecord} type="button" class="sub-button">Abbrechen
+                        <IconifyIcon icon={xIcon}/>
+                    </button>
+                </fieldset>
+            </form>
+        </article>
+    </section>
+{/if}

ui/src/routes/YearlyViews.svelte

@@ -0,0 +1,31 @@
+<script>
+    import Views from "./Views.svelte";
+    export let params;
+    params = {
+        title: 'Jahresansicht',
+        records: [],
+        isLoading: true
+    }
+    const View = {
+        'browse': () => {
+            fetch(env.API_URL + '/views/working-hours/yearly')
+                .then(res => {
+                    if (!res.ok) {
+                        throw new Error('Fail!');
+                    }
+                    return res.json();
+                })
+                .then(data => {
+                    params.records = data;
+                    params.isLoading = false;
+                })
+                .catch(err => {
+                    params.isLoading = false;
+                    console.log(err);
+                });
+        }
+    };
+    View.browse();
+</script>
+
+<Views {params} />