Added possibility to export the calendar in iCal format (closes #141)

composer.json

@@ -4,7 +4,8 @@
 		"slim/slim": "^3.8",
 		"morris/lessql": "^0.3.4",
 		"rubellum/slim-blade-view": "^0.1.1",
-		"tuupola/cors-middleware": "^0.7.0"
+		"tuupola/cors-middleware": "^0.7.0",
+		"eluceo/ical": "^0.15.0"
 	},
 	"autoload": {
 		"psr-4": {

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "c1bc4c17739e9d0ee8b33628f6d4b9a4",
+    "content-hash": "0b203f875499dfeaa61890cdec018a2d",
     "packages": [
         {
             "name": "container-interop/container-interop",
@@ -104,6 +104,57 @@
             ],
             "time": "2018-01-09T20:05:19+00:00"
         },
+        {
+            "name": "eluceo/ical",
+            "version": "0.15.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/markuspoerschke/iCal.git",
+                "reference": "add0ca99aa1f77f134a2e8b071f2ebc22b115139"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/markuspoerschke/iCal/zipball/add0ca99aa1f77f134a2e8b071f2ebc22b115139",
+                "reference": "add0ca99aa1f77f134a2e8b071f2ebc22b115139",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "suggest": {
+                "ext-mbstring": "Massive performance enhancement of line folding"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Eluceo\\iCal\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Markus Poerschke",
+                    "email": "markus@eluceo.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "The eluceo/iCal package offers a abstraction layer for creating iCalendars. You can easily create iCal files by using PHP object instead of typing your *.ics file by hand. The output will follow RFC 5545 as best as possible.",
+            "homepage": "https://github.com/markuspoerschke/iCal",
+            "keywords": [
+                "calendar",
+                "iCalendar",
+                "ical",
+                "ics",
+                "php calendar"
+            ],
+            "time": "2019-01-13T22:00:58+00:00"
+        },
         {
             "name": "http-interop/http-factory",
             "version": "0.3.0",

controllers/CalendarApiController.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Grocy\Controllers;
+
+use \Grocy\Services\CalendarService;
+use \Grocy\Services\ApiKeyService;
+
+class CalendarApiController extends BaseApiController
+{
+	public function __construct(\Slim\Container $container)
+	{
+		parent::__construct($container);
+		$this->CalendarService = new CalendarService();
+		$this->ApiKeyService = new ApiKeyService();
+	}
+
+	protected $CalendarService;
+	protected $ApiKeyService;
+
+	public function Ical(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args)
+	{
+		try
+		{
+			$vCalendar = new \Eluceo\iCal\Component\Calendar('grocy');
+
+			$events = $this->CalendarService->GetEvents();
+			foreach($events as $event)
+			{
+				$vEvent = new \Eluceo\iCal\Component\Event();
+				$vEvent->setDtStart(new \DateTime($event['start']))
+					->setDtEnd(new \DateTime($event['start']))
+					->setSummary($event['title'])
+					->setNoTime($event['date_format'] === 'date')
+					->setUseUtc(false);
+				
+				$vCalendar->addComponent($vEvent);
+			}
+
+			$response->write($vCalendar->render());
+			$response = $response->withHeader('Content-Type', 'text/calendar; charset=utf-8');
+			return $response->withHeader('Content-Disposition', 'attachment; filename="grocy.ics"');
+		}
+		catch (\Exception $ex)
+		{
+			return $this->GenericErrorResponse($response, $ex->getMessage());
+		}
+	}
+
+	public function IcalSharingLink(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args)
+	{
+		try
+		{
+			return $this->ApiResponse(array(
+				'url' => $this->AppContainer->UrlManager->ConstructUrl('/api/calendar/ical?secret=' . $this->ApiKeyService->GetOrCreateApiKey(ApiKeyService::API_KEY_TYPE_SPECIAL_PURPOSE_CALENDAR_ICAL))
+			));
+		}
+		catch (\Exception $ex)
+		{
+			return $this->GenericErrorResponse($response, $ex->getMessage());
+		}
+	}
+}

controllers/CalendarController.php

@@ -2,80 +2,22 @@
 
 namespace Grocy\Controllers;
 
-use \Grocy\Services\StockService;
-use \Grocy\Services\TasksService;
-use \Grocy\Services\ChoresService;
-use \Grocy\Services\BatteriesService;
+use \Grocy\Services\CalendarService;
 
 class CalendarController extends BaseController
 {
 	public function __construct(\Slim\Container $container)
 	{
 		parent::__construct($container);
-		$this->StockService = new StockService();
-		$this->TasksService = new TasksService();
-		$this->ChoresService = new ChoresService();
-		$this->BatteriesService = new BatteriesService();
+		$this->CalendarService = new CalendarService();
 	}
 
-	protected $StockService;
-	protected $TasksService;
-	protected $ChoresService;
-	protected $BatteriesService;
+	protected $CalendarService;
 
 	public function Overview(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args)
 	{
-		$products = $this->Database->products();
-		$titlePrefix = $this->LocalizationService->Localize('Product expires') . ': ';
-		$stockEvents = array();
-		foreach($this->StockService->GetCurrentStock() as $currentStockEntry)
-		{
-			$stockEvents[] = array(
-				'title' => $titlePrefix . FindObjectInArrayByPropertyValue($products, 'id', $currentStockEntry->product_id)->name,
-				'start' => $currentStockEntry->best_before_date
-			);
-		}
-
-		$titlePrefix = $this->LocalizationService->Localize('Task due') . ': ';
-		$taskEvents = array();
-		foreach($this->TasksService->GetCurrent() as $currentTaskEntry)
-		{
-			$taskEvents[] = array(
-				'title' => $titlePrefix . $currentTaskEntry->name,
-				'start' => $currentTaskEntry->due_date
-			);
-		}
-
-		$chores = $this->Database->chores();
-		$titlePrefix = $this->LocalizationService->Localize('Chore due') . ': ';
-		$choreEvents = array();
-		foreach($this->ChoresService->GetCurrent() as $currentChoreEntry)
-		{
-			$choreEvents[] = array(
-				'title' => $titlePrefix . FindObjectInArrayByPropertyValue($chores, 'id', $currentChoreEntry->chore_id)->name,
-				'start' => $currentChoreEntry->next_estimated_execution_time
-			);
-		}
-
-		$batteries = $this->Database->batteries();
-		$titlePrefix = $this->LocalizationService->Localize('Battery charge cycle due') . ': ';
-		$batteryEvents = array();
-		foreach($this->BatteriesService->GetCurrent() as $currentBatteryEntry)
-		{
-			$batteryEvents[] = array(
-				'title' => $titlePrefix . FindObjectInArrayByPropertyValue($batteries, 'id', $currentBatteryEntry->battery_id)->name,
-				'start' => $currentBatteryEntry->next_estimated_charge_time
-			);
-		}
-
-		$fullcalendarEventSources = array();
-		$fullcalendarEventSources[] = $stockEvents;
-		$fullcalendarEventSources[] = $taskEvents;
-		$fullcalendarEventSources[] = $choreEvents;
-		$fullcalendarEventSources[] = $batteryEvents;
-
 		return $this->AppContainer->view->render($response, 'calendar', [
-			'fullcalendarEventSources' => $fullcalendarEventSources
+			'fullcalendarEventSources' => $this->CalendarService->GetEvents()
 		]);
 	}
 }

grocy.openapi.json

@@ -1859,6 +1859,61 @@
 					}
 				}
 			}
+		},
+		"/calendar/ical": {
+			"get": {
+				"summary": "Returns the calendar in iCal format",
+				"tags": [
+					"Calendar"
+				],
+				"responses": {
+					"200": {
+						"description": "The iCal file contents",
+						"content": {
+							"text/calendar": {
+								"schema": {
+									"type": "string"
+								}
+							}
+						}
+					},
+					"400": {
+						"description": "The operation was not successful",
+						"content": {
+							"application/json": {
+								"schema": {
+									"$ref": "#/components/schemas/GenericErrorResponse"
+								}
+							}
+						}
+					}
+				}
+			}
+		},
+		"/calendar/ical/sharing-link": {
+			"get": {
+				"summary": "Returns a (public) sharing link for the calendar in iCal format",
+				"tags": [
+					"Calendar"
+				],
+				"responses": {
+					"200": {
+						"description": "The (public) sharing link for the calendar in iCal format",
+						"content": {
+							"application/json": {
+								"schema": {
+									"type": "object",
+									"properties": {
+										"url": {
+											"type": "string"
+										}
+									}
+								}
+							}
+						}
+					}
+				}
+			}
 		}
 	},
 	"components": {

localization/en/strings.php

@@ -333,5 +333,7 @@ return array(
 	'Picture' => 'Picture',
 	'Uncheck ingredients to not put them on the shopping list' => 'Uncheck ingredients to not put them on the shopping list',
 	'This is for statistical purposes only' => 'This is for statistical purposes only',
-	'You have to select a recipe' => 'You have to select a recipe'
+	'You have to select a recipe' => 'You have to select a recipe',
+	'Key type' => 'Key type',
+	'Export as iCal' => 'Export as iCal'
 );

middleware/ApiKeyAuthMiddleware.php

@@ -44,6 +44,18 @@ class ApiKeyAuthMiddleware extends BaseMiddleware
 				$validApiKey = false;
 			}
 
+			// Handling of special purpose API keys
+			if (!$validApiKey)
+			{
+				if ($routeName === 'calendar-ical')
+				{
+					if ($request->getQueryParam('secret') !== null && $apiKeyService->IsValidApiKey($request->getQueryParam('secret'), ApiKeyService::API_KEY_TYPE_SPECIAL_PURPOSE_CALENDAR_ICAL))
+					{
+						$validApiKey = true;
+					}
+				}
+			}
+
 			if (!$validSession && !$validApiKey)
 			{
 				define('GROCY_AUTHENTICATED', false);

migrations/0056.sql

@@ -0,0 +1,2 @@
+ALTER TABLE api_keys
+ADD key_type TEXT NOT NULL DEFAULT 'default';

public/viewjs/calendar.js

@@ -9,3 +9,19 @@
 	"eventLimit": true,
 	"eventSources": fullcalendarEventSources
 });
+
+$("#ical-button").on("click", function(e)
+{
+	e.preventDefault();
+
+	Grocy.Api.Get('calendar/ical/sharing-link',
+		function(result)
+		{
+			location.href = result.url;
+		},
+		function(xhr)
+		{
+			console.error(xhr);
+		}
+	);
+});

routes.php

@@ -182,6 +182,13 @@ $app->group('/api', function()
 		$this->get('/tasks', '\Grocy\Controllers\TasksApiController:Current');
 		$this->post('/tasks/{taskId}/complete', '\Grocy\Controllers\TasksApiController:MarkTaskAsCompleted');
 	}
+
+	// Calendar
+	if (GROCY_FEATURE_FLAG_CALENDAR)
+	{
+		$this->get('/calendar/ical', '\Grocy\Controllers\CalendarApiController:Ical')->setName('calendar-ical');
+		$this->get('/calendar/ical/sharing-link', '\Grocy\Controllers\CalendarApiController:IcalSharingLink');
+	}
 })->add(new ApiKeyAuthMiddleware($appContainer, $appContainer->LoginControllerInstance->GetSessionCookieName(), $appContainer->ApiKeyHeaderName))
 ->add(JsonMiddleware::class)
 ->add(new CorsMiddleware([

services/ApiKeyService.php

@@ -4,10 +4,13 @@ namespace Grocy\Services;
 
 class ApiKeyService extends BaseService
 {
+	const API_KEY_TYPE_DEFAULT = 'default';
+	const API_KEY_TYPE_SPECIAL_PURPOSE_CALENDAR_ICAL = 'special-purpose-calendar-ical';
+
 	/**
 	 * @return boolean
 	 */
-	public function IsValidApiKey($apiKey)
+	public function IsValidApiKey($apiKey, $keyType = self::API_KEY_TYPE_DEFAULT)
 	{
 		if ($apiKey === null || empty($apiKey))
 		{
@@ -15,7 +18,7 @@ class ApiKeyService extends BaseService
 		}
 		else
 		{
-			$apiKeyRow = $this->Database->api_keys()->where('api_key = :1 AND expires > :2', $apiKey, date('Y-m-d H:i:s', time()))->fetch();
+			$apiKeyRow = $this->Database->api_keys()->where('api_key = :1 AND expires > :2 AND key_type = :3', $apiKey, date('Y-m-d H:i:s', time()), $keyType)->fetch();
 			if ($apiKeyRow !== null)
 			{
 				$apiKeyRow->update(array(
@@ -33,14 +36,15 @@ class ApiKeyService extends BaseService
 	/**
 	 * @return string
 	 */
-	public function CreateApiKey()
+	public function CreateApiKey($keyType = self::API_KEY_TYPE_DEFAULT)
 	{
 		$newApiKey = $this->GenerateApiKey();
 		
 		$apiKeyRow = $this->Database->api_keys()->createRow(array(
 			'api_key' => $newApiKey,
 			'user_id' => GROCY_USER_ID,
-			'expires' => '2999-12-31 23:59:59' // Default is that API keys expire never
+			'expires' => '2999-12-31 23:59:59', // Default is that API keys expire never
+			'key_type' => $keyType
 		));
 		$apiKeyRow->save();
 
@@ -68,6 +72,28 @@ class ApiKeyService extends BaseService
 		return null;
 	}
 
+	// Returns any valid key for $keyType,
+	// not allowed for key type "default"
+	public function GetOrCreateApiKey($keyType)
+	{
+		if ($keyType === self::API_KEY_TYPE_DEFAULT)
+		{
+			return null;
+		}
+		else
+		{
+			$apiKeyRow = $this->Database->api_keys()->where('key_type = :1 AND expires > :2', $keyType, date('Y-m-d H:i:s', time()))->fetch();
+			if ($apiKeyRow !== null)
+			{
+				return $apiKeyRow->api_key;
+			}
+			else
+			{
+				return $this->CreateApiKey($keyType);
+			}
+		}
+	}
+
 	private function GenerateApiKey()
 	{
 		return RandomString(50);

services/CalendarService.php

@@ -0,0 +1,80 @@
+<?php
+
+namespace Grocy\Services;
+
+use \Grocy\Services\StockService;
+use \Grocy\Services\TasksService;
+use \Grocy\Services\ChoresService;
+use \Grocy\Services\BatteriesService;
+
+class CalendarService extends BaseService
+{
+	public function __construct()
+	{
+		parent::__construct();
+		$this->StockService = new StockService();
+		$this->TasksService = new TasksService();
+		$this->ChoresService = new ChoresService();
+		$this->BatteriesService = new BatteriesService();
+	}
+
+	protected $StockService;
+	protected $TasksService;
+	protected $ChoresService;
+	protected $BatteriesService;
+
+	public function GetEvents()
+	{
+		$products = $this->Database->products();
+		$titlePrefix = $this->LocalizationService->Localize('Product expires') . ': ';
+		$stockEvents = array();
+		foreach($this->StockService->GetCurrentStock() as $currentStockEntry)
+		{
+			if ($currentStockEntry->amount > 0)
+			{
+				$stockEvents[] = array(
+					'title' => $titlePrefix . FindObjectInArrayByPropertyValue($products, 'id', $currentStockEntry->product_id)->name,
+					'start' => $currentStockEntry->best_before_date,
+					'date_format' => 'date'
+				);
+			}
+		}
+
+		$titlePrefix = $this->LocalizationService->Localize('Task due') . ': ';
+		$taskEvents = array();
+		foreach($this->TasksService->GetCurrent() as $currentTaskEntry)
+		{
+			$taskEvents[] = array(
+				'title' => $titlePrefix . $currentTaskEntry->name,
+				'start' => $currentTaskEntry->due_date,
+				'date_format' => 'date'
+			);
+		}
+
+		$chores = $this->Database->chores();
+		$titlePrefix = $this->LocalizationService->Localize('Chore due') . ': ';
+		$choreEvents = array();
+		foreach($this->ChoresService->GetCurrent() as $currentChoreEntry)
+		{
+			$choreEvents[] = array(
+				'title' => $titlePrefix . FindObjectInArrayByPropertyValue($chores, 'id', $currentChoreEntry->chore_id)->name,
+				'start' => $currentChoreEntry->next_estimated_execution_time,
+				'date_format' => 'datetime'
+			);
+		}
+
+		$batteries = $this->Database->batteries();
+		$titlePrefix = $this->LocalizationService->Localize('Battery charge cycle due') . ': ';
+		$batteryEvents = array();
+		foreach($this->BatteriesService->GetCurrent() as $currentBatteryEntry)
+		{
+			$batteryEvents[] = array(
+				'title' => $titlePrefix . FindObjectInArrayByPropertyValue($batteries, 'id', $currentBatteryEntry->battery_id)->name,
+				'start' => $currentBatteryEntry->next_estimated_charge_time,
+				'date_format' => 'datetime'
+			);
+		}
+
+		return array_merge($stockEvents, $taskEvents, $choreEvents, $batteryEvents);
+	}
+}

views/calendar.blade.php

@@ -16,12 +16,17 @@
 @section('content')
 <div class="row">
 	<div class="col">
-		<h1>@yield('title')</h1>
+		<h1>
+			@yield('title')
+			<a id="ical-button" class="btn btn-outline-dark" href="#">
+				<i class="fas fa-calendar-plus"></i>&nbsp;{{ $L('Export as iCal') }}
+			</a>
+		</h1>
 	</div>
 </div>
 
 <script>
-	var fullcalendarEventSources = {!! json_encode($fullcalendarEventSources) !!}
+	var fullcalendarEventSources = {!! json_encode(array($fullcalendarEventSources)) !!}
 </script>
 
 <div class="row">

views/manageapikeys.blade.php

@@ -38,6 +38,7 @@
 					<th>{{ $L('Expires') }}</th>
 					<th>{{ $L('Last used') }}</th>
 					<th>{{ $L('Created') }}</th>
+					<th>{{ $L('Key type') }}</th>
 				</tr>
 			</thead>
 			<tbody class="d-none">
@@ -66,6 +67,9 @@
 						{{ $apiKey->row_created_timestamp }}
 						<time class="timeago timeago-contextual" datetime="{{ $apiKey->row_created_timestamp }}"></time>
 					</td>
+					<td>
+						{{ $apiKey->key_type }}
+					</td>
 				</tr>
 				@endforeach
 			</tbody>