Automatically post on facebook page

.env.example

@@ -32,9 +32,12 @@ PUSHER_APP_ID=
 PUSHER_APP_KEY=
 PUSHER_APP_SECRET=
 
-
 INVISIBLE_RECAPTCHA_SITEKEY=6LfdQSMUAAAAAOP31dkmdZJeNvDghlBfqJsHT5M-
 INVISIBLE_RECAPTCHA_SECRETKEY=6LfdQSMUAAAAAAT5cKXa7lI3koiFy4c5BP7BX3m8
 
 NOCAPTCHA_SECRET=6LfdQSMUAAAAAAT5cKXa7lI3koiFy4c5BP7BX3m8
 NOCAPTCHA_SITEKEY=6LfdQSMUAAAAAOP31dkmdZJeNvDghlBfqJsHT5M-
+
+FB_APP_ID=424974257871315
+FB_APP_SECRET=94e6ed7204eb94082bc87feeb7bea7ca
+FB_PAGE_TOKEN=EAAGCgwet2dMBAJJsZBgVTZCb4jdgTVnJD8TjvsOQ5JKyxEYWc7d6xSeosfZBqjITY95qC0jQ66RsBRZBlprHCbE5YYQl6cwaKHZAR4MXLZA977jtCaOP3Q5ZCXY7UrBJCV6IOcIAbmsBPFNoyecLgn6qVMecdxQrspbd31AoxvZBz4bZBZCOPSC6Cb

README.md

@@ -44,6 +44,29 @@ chmod -R 777 storage/
 chmod 777 bootstrap/cache
 ```
 
+#### Facebook intergration
+
+Facebook intergration automatically post need requests to a facebook page. A facebook app and administrative rights to a page is required. Using them an access token to page should be generated to put in .env file. The app does not need to be approved if the page admin has has administrative rights to the app.
+
+![](http://d.pr/i/R3WrWj+)
+
+![](http://d.pr/i/othvIj+)
+Click "Get Access Token"
+
+![](http://d.pr/i/JL3vnV+)
+
+The access token is short lived one (2 hours), now we need to convert it to long-lived.
+
+Visit below url and it will give you the access token
+
+`https://graph.facebook.com/oauth/access_token?             
+    client_id=APP_ID&
+    client_secret=APP_SECRET&
+    grant_type=fb_exchange_token&
+    fb_exchange_token=EXISTING_ACCESS_TOKEN `
+
+Refer to .env.sample to place the credentials.
+
 ### Pull requests
 
 Send all the PRs to `dev` branch. We keep `master` and `prod` branches only for final releases and all the development works on the `dev`.

app/Http/Controllers/NeedsController.php

@@ -6,18 +6,24 @@
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Response;
 use Validator;
+use App\Services\FacebookNotification;
+use DomainException;
 
 class NeedsController extends Controller
 {
     private $need;
 
+    private $fbNotifier;
+
     /**
      * NeedsController constructor.
      * @param NeedsRepository $needsRepository
+     * @param FacebookNotification $fbNotifier
      */
-    public function __construct(NeedsRepository $needsRepository)
+    public function __construct(NeedsRepository $needsRepository, FacebookNotification $fbNotifier)
     {
         $this->need = $needsRepository;
+        $this->fbNotifier = $fbNotifier;
     }
 
     /**
@@ -68,17 +74,27 @@ public function save(Request $request)
         ], $messages);
 
         if ($validator->fails()) {
+
             return redirect('/needs/add')
                 ->with('isSuccess', false)
                 ->with('errors', $validator->errors()->all())
                 ->withInput();
         } else {
-            $response = $this->need->addNeed($request->all());
-            if ($response) {
+
+            try {
+
+                $need = $this->need->addNeed($request->all());
+
+                //need is being created first and if fb posting fail rest of the logic
+                //is executed
+                $fbId = $this->fbNotifier->publishNeed($need);
+                $this->need->updateNeed($need->id, ['fb_post_id' => $fbId]);
+
                 return redirect('/needs')
                     ->with('isSuccess', true)
                     ->with('message', 'සාර්ථකව ඇතුලත්කරන ලදී.');
-            } else {
+
+            } catch (DomainException $e) {
                 return redirect('/needs/add')
                     ->with('isSuccess', false)
                     ->with('errors', ['ඇතුලත්කිරීම දෝෂ සහිතය.'])

app/Need.php

@@ -12,6 +12,6 @@ class Need extends Model
      * @var array
      */
     protected $fillable = [
-        'name', 'telephone', 'address', 'city', 'needs', 'heads', 'source'
+        'name', 'telephone', 'address', 'city', 'needs', 'heads', 'source', 'fb_post_id'
     ];
 }

app/Repositories/NeedsRepository.php

@@ -11,6 +11,7 @@
 use App\Need;
 use App\Repositories\Contracts\NeedsInterface;
 use Illuminate\Support\Facades\Log;
+use DomainException;
 
 class NeedsRepository implements NeedsInterface
 {
@@ -23,10 +24,20 @@ class NeedsRepository implements NeedsInterface
     public function addNeed($input)
     {
         try {
-            Need::create($input);
-            return true;
+            return Need::create($input);
         } catch (\Exception $e) {
-            Log::error($e->getMessage());
+            throw new DomainException('Unable to create need.');
+        }
+    }
+
+    public function updateNeed($id, array $input)
+    {
+        $need = $this->findNeed($id);
+
+        if ($need) {
+            $need->fill($input);
+            return $need->save();
+        } else {
             return false;
         }
     }

app/Services/FacebookNotification.php

@@ -0,0 +1,51 @@
+<?php
+namespace App\Services;
+
+use App\Need;
+use Facebook\Facebook;
+use Facebook\Exceptions\FacebookResponseException;
+use Facebook\Exceptions\FacebookSDKException;
+use DomainException;
+use Config;
+use Log;
+
+class FacebookNotification
+{
+    protected $fb;
+
+    public function __construct()
+    {
+        //TODO: should come from the IoC container
+        //hardcoding to validate the feature
+        $this->fb = new Facebook([
+          'app_id' => Config::get('services.facebook.app_id'),
+          'app_secret' => Config::get('services.facebook.app_secret'),
+          'default_graph_version' => 'v2.9',
+          'default_access_token' => Config::get('services.facebook.page_token')
+        ]);
+    }
+
+    public function publishNeed(Need $need)
+    {
+        $content   = [];
+        $content[] = $need->needs;
+        $content[] = $need->address;
+        $content[] = $need->city;
+        $content[] = "People - ". $need->heads;
+        $content[] = $need->name.' - '.$need->telephone;
+
+        try {
+
+          $response = $this->fb->post('/me/feed', ['message' => implode($content, "\n")]);
+          $response->decodeBody();
+          return array_get($response->getDecodedBody(), 'id');
+
+        } catch(FacebookResponseException $e) {
+            Log::error($e);
+            return false;
+        } catch(FacebookSDKException $e) {
+            Log::error($e);
+            return false;
+        }
+    }
+}

composer.json

@@ -6,6 +6,7 @@
     "type": "project",
     "require": {
         "php": ">=5.6.4",
+        "facebook/graph-sdk": "^5.5",
         "laravel/framework": "5.4.*",
         "laravel/tinker": "~1.0",
         "albertcht/invisible-recaptcha": "^1.3"

config/services.php

@@ -35,4 +35,10 @@
         'secret' => env('STRIPE_SECRET'),
     ],
 
+    'facebook' => [
+        'app_id' => env('FB_APP_ID'),
+        'app_secret' => env('FB_APP_SECRET'),
+        'page_token' => env('FB_PAGE_TOKEN')
+    ]
+
 ];

database/migrations/2017_05_29_003241_add_fb_post_id_to_needs.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddFbPostIdToNeeds extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('needs', function (Blueprint $table) {
+            $table->string("fb_post_id", 100)->after("heads")->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('needs', function (Blueprint $table) {
+            $table->dropColumn("needs");
+        });
+    }
+}