#25: Basic service worker notifications

app/Http/Controllers/Api/Web/NotificationsController.php

@@ -25,6 +25,8 @@ use Input;
 use Poniverse\Ponyfm\Http\Controllers\ApiControllerBase;
 use Poniverse\Ponyfm\Models\Notification;
 use Poniverse\Ponyfm\Models\Subscription;
+use Poniverse\Ponyfm\Models\Track;
+use Poniverse\Ponyfm\Models\User;
 use Minishlink\WebPush\WebPush;
 
 class NotificationsController extends ApiControllerBase
@@ -84,9 +86,25 @@ class NotificationsController extends ApiControllerBase
                 'auth' => $input->keys->auth
             ]);
 
-            return $subscription->id;
+            return ['id' => $subscription->id];
         } else {
-            return $existing->id;
+            return ['id' => $existing->id];
         }
     }
+
+    /**
+     * Removes a user's notification subscription
+     *
+     * @return string
+     */
+    public function postUnsubscribe()
+    {
+        $input = json_decode(Input::json('subscription'));
+
+        $existing = Subscription::where('endpoint', '=', $input->endpoint)
+            ->where('user_id', '=', Auth::user()->id)
+            ->delete();
+
+        return ['result' => 'success'];
+    }
 }

app/Http/routes.php

@@ -138,6 +138,7 @@ Route::group(['prefix' => 'api/web'], function() {
         Route::get('/notifications', 'Api\Web\NotificationsController@getNotifications');
         Route::put('/notifications/mark-as-read', 'Api\Web\NotificationsController@putMarkAsRead');
         Route::post('/notifications/subscribe', 'Api\Web\NotificationsController@postSubscribe');
+        Route::post('/notifications/unsubscribe', 'Api\Web\NotificationsController@postUnsubscribe');
 
         Route::get('/tracks/edit/{id}', 'Api\Web\TracksController@getEdit');
 

app/Jobs/SendNotifications.php

@@ -62,7 +62,7 @@ class SendNotifications extends Job implements SelfHandling, ShouldQueue
         // tries (and fails) to serialize static fields.
         $drivers = [
             PonyfmDriver::class,
-            //NativeDriver::class
+            NativeDriver::class
         ];
 
         foreach ($drivers as $driver) {

app/Library/Notifications/Drivers/NativeDriver.php

@@ -21,31 +21,48 @@
 namespace Poniverse\Ponyfm\Library\Notifications\Drivers;
 
 
-use Carbon\Carbon;
 use Poniverse\Ponyfm\Contracts\Favouritable;
 use Poniverse\Ponyfm\Models\Activity;
 use Poniverse\Ponyfm\Models\Comment;
-use Poniverse\Ponyfm\Models\Notification;
 use Poniverse\Ponyfm\Models\Playlist;
 use Poniverse\Ponyfm\Models\Track;
 use Poniverse\Ponyfm\Models\User;
+use Minishlink\WebPush\WebPush;
 
 class NativeDriver extends AbstractDriver {    
     /**
-     * A helper method for bulk insertion of notification records.
+     * Method for sending notifications to devices
      *
-     * @param int $activityId
+     * @param Activity $activity
      * @param User[] $recipients collection of {@link User} objects
      */
-    private function pushNotifications(int $activityId, $recipients) {
-        $notifications = [];
+    private function pushNotifications(Activity $activity, $recipients) {
+        $apiKeys = array(
+            'GCM' => 'AIzaSyCLmCVIgASWL280rHyPz8OP7il3pf8SrGg',
+        );
+
+        $webPush = new WebPush($apiKeys);
+
+        $data = [
+            'id' => $activity->id,
+            'text' => $activity->getTextAttribute(),
+            'title' => $activity->getTitleFromActivityType(),
+            'image' => $activity->getThumbnailUrlAttribute(),
+            'url' => $activity->url
+        ];
+        
+        $jsonData = json_encode($data);
+
         foreach ($recipients as $recipient) {
-            $notifications[] = [
-                'activity_id'   => $activityId,
-                'user_id'       => $recipient->id
-            ];
+            $webPush->sendNotification(
+                $recipient->endpoint,
+                $jsonData,
+                $recipient->p256dh,
+                $recipient->auth
+            );
         }
-        Notification::insert($notifications);
+
+        $webPush->flush();
     }
 
     /**
@@ -58,7 +75,7 @@ class NativeDriver extends AbstractDriver {
             ->get()[0];
 
 
-        $this->pushNotifications($activity->id, $this->getRecipients(__FUNCTION__, func_get_args()));
+        $this->pushNotifications($activity, $this->getRecipients(__FUNCTION__, func_get_args()));
     }
 
     /**
@@ -70,16 +87,16 @@ class NativeDriver extends AbstractDriver {
             ->where('resource_id', $playlist->id)
             ->get()[0];
 
-        $this->pushNotifications($activity->id, $this->getRecipients(__FUNCTION__, func_get_args()));
+        $this->pushNotifications($activity, $this->getRecipients(__FUNCTION__, func_get_args()));
     }
 
     public function newFollower(User $userBeingFollowed, User $follower) {
-        $activity = Activity::where('user_id', $follower->user_id)
+        $activity = Activity::where('user_id', $follower->id)
             ->where('activity_type', Activity::TYPE_NEW_FOLLOWER)
             ->where('resource_id', $userBeingFollowed->id)
             ->get()[0];
 
-        $this->pushNotifications($activity->id, $this->getRecipients(__FUNCTION__, func_get_args()));
+        $this->pushNotifications($activity, $this->getRecipients(__FUNCTION__, func_get_args()));
     }
 
     /**
@@ -91,18 +108,18 @@ class NativeDriver extends AbstractDriver {
             ->where('resource_id', $comment->id)
             ->get()[0];
 
-        $this->pushNotifications($activity->id, $this->getRecipients(__FUNCTION__, func_get_args()));
+        $this->pushNotifications($activity, $this->getRecipients(__FUNCTION__, func_get_args()));
     }
 
     /**
      * @inheritdoc
      */
     public function newFavourite(Favouritable $entityBeingFavourited, User $favouriter) {
-        $activity = Activity::where('user_id', $favouriter->user_id)
+        $activity = Activity::where('user_id', $favouriter->id)
             ->where('activity_type', Activity::TYPE_CONTENT_FAVOURITED)
             ->where('resource_id', $entityBeingFavourited->id)
             ->get()[0];
 
-        $this->pushNotifications($activity->id, $this->getRecipients(__FUNCTION__, func_get_args()));
+        $this->pushNotifications($activity, $this->getRecipients(__FUNCTION__, func_get_args()));
     }
 }

app/Library/Notifications/RecipientFinder.php

@@ -25,9 +25,11 @@ use Illuminate\Foundation\Bus\DispatchesJobs;
 use Poniverse\Ponyfm\Contracts\Favouritable;
 use Poniverse\Ponyfm\Contracts\NotificationHandler;
 use Poniverse\Ponyfm\Jobs\SendNotifications;
+use Poniverse\Ponyfm\Library\Notifications\Drivers\NativeDriver;
 use Poniverse\Ponyfm\Library\Notifications\Drivers\PonyfmDriver;
 use Poniverse\Ponyfm\Models\Comment;
 use Poniverse\Ponyfm\Models\Playlist;
+use Poniverse\Ponyfm\Models\Subscription;
 use Poniverse\Ponyfm\Models\Track;
 use Poniverse\Ponyfm\Models\User;
 
@@ -59,6 +61,21 @@ class RecipientFinder implements NotificationHandler {
         switch ($this->notificationDriver) {
             case PonyfmDriver::class:
                 return $track->user->followers;
+            case NativeDriver::class:
+                $followerIds = [];
+                $subIds = [];
+                $rawSubIds = Subscription::select('id')->get();
+
+                foreach ($track->user->followers as $follower) {
+                    array_push($followerIds, $follower->id);
+                }
+
+                foreach ($rawSubIds as $sub) {
+                    array_push($subIds, $sub->id);
+                }
+
+                $targetIds = array_intersect($followerIds, $subIds);
+                return Subscription::whereIn('user_id', $targetIds)->get();
             default:
                 return $this->fail();
         }
@@ -71,6 +88,21 @@ class RecipientFinder implements NotificationHandler {
         switch ($this->notificationDriver) {
             case PonyfmDriver::class:
                 return $playlist->user->followers;
+            case NativeDriver::class:
+                $followerIds = [];
+                $subIds = [];
+                $rawSubIds = Subscription::select('id')->get();
+
+                foreach ($playlist->user->followers as $follower) {
+                    array_push($followerIds, $follower->id);
+                }
+
+                foreach ($rawSubIds as $sub) {
+                    array_push($subIds, $sub->id);
+                }
+
+                $targetIds = array_intersect($followerIds, $subIds);
+                return Subscription::whereIn('user_id', $targetIds)->get();
             default:
                 return $this->fail();
         }
@@ -83,6 +115,8 @@ class RecipientFinder implements NotificationHandler {
         switch ($this->notificationDriver) {
             case PonyfmDriver::class:
                 return [$userBeingFollowed];
+            case NativeDriver::class:
+                return Subscription::where('user_id', '=', $userBeingFollowed->id)->get();
             default:
                 return $this->fail();
         }
@@ -98,6 +132,8 @@ class RecipientFinder implements NotificationHandler {
                     $comment->user->id === $comment->resource->user->id
                         ? []
                         : [$comment->resource->user];
+            case NativeDriver::class:
+                return Subscription::where('user_id', '=', $comment->resource->user->id)->get();
             default:
                 return $this->fail();
         }
@@ -113,6 +149,8 @@ class RecipientFinder implements NotificationHandler {
                     $favouriter->id === $entityBeingFavourited->user->id
                         ? []
                         : [$entityBeingFavourited->user];
+            case NativeDriver::class:
+                return Subscription::where('user_id', '=', $entityBeingFavourited->user->id)->get();
             default:
                 return $this->fail();
         }

app/Models/Activity.php

@@ -165,6 +165,24 @@ class Activity extends Model {
         }
     }
 
+    public function getTitleFromActivityType() {
+        switch($this->activity_type) {
+            case static::TYPE_PUBLISHED_TRACK:
+                return "Pony.fm - New track";
+            case static::TYPE_PUBLISHED_PLAYLIST:
+                return "Pony.fm - New playlist";
+            case static::TYPE_NEW_FOLLOWER:
+                return "Pony.fm - New follower";
+            case static::TYPE_NEW_COMMENT:
+                return "Pony.fm - New comment";
+            case static::TYPE_CONTENT_FAVOURITED:
+                return "Pony.fm - Favourited";
+
+            default:
+                return "Pony.fm - Unknown";
+        }
+    }
+
     /**
      * @return string human-readable Markdown string describing this notification
      * @throws \Exception

public/service-worker.js

@@ -23,6 +23,14 @@ var urlsToCache = [
 
 var CACHE_NAME = 'pfm-offline-v1';
 
+var notifUrlCache = {};
+
+function getChromeVersion () {
+  var raw = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
+
+  return raw ? parseInt(raw[2], 10) : false;
+}
+
 // Set the callback for the install step
 self.addEventListener('install', function(event) {
   // Perform install steps
@@ -60,5 +68,41 @@ self.addEventListener('fetch', function(event) {
 });
 
 self.addEventListener('push', function(event) {
-  console.log('Push message', event);
+  console.log(event);
+  var data = {};
+
+  if (event.data) {
+    console.log(event.data.json());
+    data = JSON.parse(event.data.text());
+  }
+
+  notifUrlCache['pfm-' + data.id] = data.url;
+
+  self.registration.showNotification(data.title, {
+    body: data.text,
+    icon: data.image,
+    tag: 'pfm-' + data.id
+  })
+});
+
+self.addEventListener('notificationclick', function(event) {
+  event.notification.close();
+
+  event.waitUntil(
+    clients.matchAll({
+      type: "window"
+    })
+    .then(function(clientList) {
+      var url = notifUrlCache[event.notification.tag];
+      for (var i = 0; i < clientList.length; i++) {
+        var client = clientList[i];
+        if (client.url == url && 'focus' in client)
+          return client.focus();
+      }
+
+      if (clients.openWindow) {
+        return clients.openWindow(url);
+      }
+    })
+  );
 });

public/templates/directives/notification-list.html

@@ -1,7 +1,14 @@
 <div class="notif-list">
-    <div ng-repeat="notification in notifications" class="notification" ng-class="{'unread': !notification.is_read}">
-        <a href="{{ ::notification.url }}" class="img-link"><img pfm-src-loader="::notification.thumbnail_url" pfm-src-size="thumbnail"></a>
-        <a href="{{ ::notification.url }}" class="message"><p>{{ ::notification.text }}</p></a>
+    <div class="notif-switch" ng-hide="switchHidden">
+        <input id="test" type="checkbox" hidden="hidden" ng-model="subscribed" ng-change="switchToggled()" ng-disabled="switchDisabled"/>
+        <label for="test" class="switch" ng-class="{'disabled': switchDisabled}"></label>
+        <span>Enable push notifications</span>
+    </div>
+    <div class="notif-scroll">
+        <div ng-repeat="notification in notifications" class="notification" ng-class="{'unread': !notification.is_read}">
+            <a href="{{ ::notification.url }}" class="img-link"><img pfm-src-loader="::notification.thumbnail_url" pfm-src-size="thumbnail"></a>
+            <a href="{{ ::notification.url }}" class="message"><p>{{ ::notification.text }}</p></a>
+        </div>
+        <p ng-show="notifications.length < 1" class="error">No notifications :(</p>
     </div>
-    <p ng-show="notifications.length < 1" class="error">No notifications :(</p>
 </div>

resources/assets/scripts/app/controllers/application.coffee

@@ -31,7 +31,6 @@ module.exports = angular.module('ponyfm').controller "application", [
             console.log 'Service Worker is supported'
             navigator.serviceWorker.register('service-worker.js').then((reg) ->
                 console.log 'SW registered', reg
-                
             ).catch (err) ->
                 console.log 'SW register failed', err
 

resources/assets/scripts/app/directives/notification-list.coffee

@@ -24,6 +24,9 @@ module.exports = angular.module('ponyfm').directive 'pfmNotificationList', () ->
         '$scope', 'notifications', '$timeout', '$rootScope', '$http'
         ($scope, notifications, $timeout, $rootScope, $http) ->
             $scope.notifications = []
+            $scope.subscribed = false
+            $scope.switchDisabled = true
+            $scope.switchHidden = false
             isTimeoutScheduled = false
 
             # TODO: ADD REFRESH BUTTON
@@ -31,14 +34,33 @@ module.exports = angular.module('ponyfm').directive 'pfmNotificationList', () ->
             $rootScope.$on 'shouldUpdateNotifications', () ->
                 refreshNotifications()
             
+            $scope.switchToggled = () ->
+                if $scope.subscribed
+                    $scope.switchDisabled = true
+                    notifications.subscribe().done (result) ->
+                        if result
+                            $scope.switchDisabled = false
+                else
+                    $scope.switchDisabled = true
+                    notifications.unsubscribe().done (result) ->
+                        if result
+                            $scope.switchDisabled = false
+
+
             checkSubscription = () ->
-                navigator.serviceWorker.ready.then((reg) ->
-                    reg.pushManager.subscribe({userVisibleOnly: true}).then((sub) ->
-                        console.log 'Push sub', JSON.stringify(sub)
-                        subData = JSON.stringify(sub)
-                        $http.post('/api/web/notifications/subscribe', {subscription: subData})
-                    )
-                )
+                $scope.disabled = true
+                notifications.checkSubscription().done (subStatus) ->
+                    switch subStatus
+                        when 0
+                            $scope.subscribed = false
+                            $scope.switchDisabled = false
+                        when 1
+                            $scope.subscribed = true
+                            $scope.switchDisabled = false
+                        else
+                            $scope.subscribed = false
+                            $scope.switchDisabled = true
+                            $scope.hidden = true
 
             refreshNotifications = () ->
                 notifications.getNotifications().done (result) ->

resources/assets/scripts/app/services/notifications.coffee

@@ -61,5 +61,78 @@ module.exports = angular.module('ponyfm').factory('notifications', [
                 else
                     return 0
 
+            subscribe: () ->
+                def = new $.Deferred()
+                navigator.serviceWorker.ready.then (reg) ->
+                    reg.pushManager.subscribe({userVisibleOnly: true}).then (sub) ->
+                        console.log 'Push sub', JSON.stringify(sub)
+                        self.sendSubscriptionToServer(sub).done (result) ->
+                            def.resolve result
+
+                def.promise()
+
+            unsubscribe: () ->
+                def = new $.Deferred()
+                navigator.serviceWorker.ready.then (reg) ->
+                    reg.pushManager.getSubscription().then (sub) ->
+                        sub.unsubscribe().then (result) ->
+                            self.removeSubscriptionFromServer(sub).done (result) ->
+                                def.resolve true
+                        .catch (e) ->
+                            console.warn('Unsubscription error: ', e)
+                            def.resolve false
+
+                def.promise()
+
+            sendSubscriptionToServer: (sub) ->
+                def = new $.Deferred()
+                subData = JSON.stringify(sub)
+                $http.post('/api/web/notifications/subscribe', {subscription: subData}).success () ->
+                    def.resolve true
+                .error () ->
+                    def.resolve false
+
+                def.promise()
+
+            removeSubscriptionFromServer: (sub) ->
+                def = new $.Deferred()
+                subData = JSON.stringify(sub)
+                $http.post('/api/web/notifications/unsubscribe', {subscription: subData}).success () ->
+                    def.resolve true
+                .error () ->
+                    def.resolve false
+
+                def.promise()
+
+            checkSubscription: () ->
+                def = new $.Deferred()
+                if 'serviceWorker' of navigator
+                    if !('showNotification' of ServiceWorkerRegistration.prototype)
+                        console.warn('Notifications aren\'t supported.')
+                        def.resolve -1
+
+                    if Notification.permission == 'denied'
+                        console.warn('The user has blocked notifications.')
+                        def.resolve -1
+
+                    if !('PushManager' of window)
+                        console.warn('Push messaging isn\'t supported.')
+                        def.resolve -1
+
+                    navigator.serviceWorker.ready.then (reg) ->
+                        reg.pushManager.getSubscription().then (sub) ->
+                            if !sub
+                                def.resolve 0
+
+                            self.sendSubscriptionToServer(sub)
+
+                            def.resolve 1
+
+
+                else
+                    console.warn('Service worker isn\'t supported.')
+                    def.resolve -1
+
+                def.promise()
         self
 ])

resources/assets/styles/content.less

@@ -626,6 +626,14 @@ html {
   }
 }
 
+.notif-switch {
+  margin-bottom: 15px;
+
+  span {
+    margin-left: 5px;
+  }
+}
+
 .notif-list {
   .error {
     text-align: center;

resources/assets/styles/forms.less

@@ -121,3 +121,55 @@ label {
 textarea {
   height: 60px;
 }
+
+.switch {
+  display: inline-block;
+  position: relative;
+  width: 40px;
+  height: 16px;
+  border-radius: 8px;
+  background: rgba(0,0,0,0.26);
+  -webkit-transition: background 0.28s cubic-bezier(0.4, 0, 0.2, 1);
+  transition: background 0.28s cubic-bezier(0.4, 0, 0.2, 1);
+  vertical-align: middle;
+  cursor: pointer;
+
+  &::before {
+    content: '';
+    position: absolute;
+    top: -4px;
+    left: -4px;
+    width: 24px;
+    height: 24px;
+    background: #fafafa;
+    box-shadow: 0 2px 8px rgba(0,0,0,0.28);
+    border-radius: 50%;
+    transition: left 0.28s cubic-bezier(0.4, 0, 0.2, 1), background 0.28s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1);
+  }
+
+  &:active::before {
+    box-shadow: 0 2px 8px rgba(0,0,0,0.28), 0 0 0 20px rgba(128,128,128,0.1);
+  }
+}
+
+input:checked + .switch {
+  background: rgba(132,82,138,0.5);
+}
+
+input:checked + .switch::before {
+  left: 20px;
+  background: #84528a;
+}
+
+input:checked + .switch:active::before {
+  box-shadow: 0 2px 8px rgba(0,0,0,0.28), 0 0 0 20px rgba(0,150,136,0.2);
+}
+
+.switch.disabled {
+  background: #bfbfbf;
+}
+
+.switch.disabled::before {
+  background: #dadada;
+}
+