Make threads likeable

Author: joedixon

app/Exceptions/CannotLikeThreadMultipleTimes.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Exceptions;
+
+use Exception;
+
+class CannotLikeThreadMultipleTimes extends Exception
+{
+    protected $message = 'A thread cannot be liked multiple times.';
+}

app/Http/Controllers/Forum/ThreadsController.php

@@ -7,8 +7,10 @@
 use App\Http\Requests\ThreadRequest;
 use App\Jobs\CreateThread;
 use App\Jobs\DeleteThread;
+use App\Jobs\LikeThread;
 use App\Jobs\MarkThreadSolution;
 use App\Jobs\SubscribeToSubscriptionAble;
+use App\Jobs\UnlikeThread;
 use App\Jobs\UnmarkThreadSolution;
 use App\Jobs\UnsubscribeFromSubscriptionAble;
 use App\Jobs\UpdateThread;
@@ -133,4 +135,18 @@ public function unsubscribe(Request $request, Thread $thread)
 
         return redirect()->route('thread', $thread->slug());
     }
+
+    public function like(Thread $thread)
+    {
+        $this->dispatchNow(new LikeThread($thread, auth()->user()));
+
+        return back();
+    }
+
+    public function unlike(Thread $thread)
+    {
+        $this->dispatchNow(new UnlikeThread($thread, auth()->user()));
+
+        return back();
+    }
 }

app/Jobs/LikeThread.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Jobs;
+
+use App\User;
+use Illuminate\Database\QueryException;
+use App\Exceptions\CannotLikeThreadMultipleTimes;
+use App\Models\Thread;
+
+class LikeThread
+{
+    /**
+     * @var \App\Models\Thread
+     */
+    private $thread;
+
+    /**
+     * @var \App\User
+     */
+    private $user;
+
+    /**
+     * Create a new job instance.
+     *
+     * @param \App\Models\Thread $thread
+     * @param \App\User $user
+     */
+    public function __construct(Thread $thread, User $user)
+    {
+        $this->thread = $thread;
+        $this->user = $user;
+    }
+
+    /**
+     * Execute the job.
+     *
+     * @return void
+     * @throws \App\Exceptions\CannotLikeReplyTwice
+     */
+    public function handle()
+    {
+        try {
+            $this->thread->likedBy($this->user);
+        } catch (QueryException $exception) {
+            throw new CannotLikeThreadMultipleTimes();
+        }
+    }
+}

app/Jobs/UnlikeThread.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Jobs;
+
+use App\User;
+use App\Models\Thread;
+
+class UnlikeThread
+{
+    /**
+     * @var \App\Models\Thread
+     */
+    private $thread;
+
+    /**
+     * @var \App\User
+     */
+    private $user;
+
+    /**
+     * Create a new job instance.
+     *
+     * @param \App\Models\Thread $thread
+     * @param \App\User $user
+     */
+    public function __construct(Thread $thread, User $user)
+    {
+        $this->thread = $thread;
+        $this->user = $user;
+    }
+
+    /**
+     * Execute the job.
+     *
+     * @return void
+     */
+    public function handle()
+    {
+        $this->thread->dislikedBy($this->user);
+    }
+}

app/Models/Thread.php

@@ -4,6 +4,7 @@
 
 use App\Exceptions\CouldNotMarkReplyAsSolution;
 use App\Helpers\HasAuthor;
+use App\Helpers\HasLikes;
 use App\Helpers\HasSlug;
 use App\Helpers\HasTags;
 use App\Helpers\HasTimestamps;
@@ -25,7 +26,7 @@
 
 final class Thread extends Model implements ReplyAble, SubscriptionAble, Feedable
 {
-    use HasAuthor, HasSlug, HasTimestamps, ModelHelpers, ProvidesSubscriptions, ReceivesReplies, HasTags;
+    use HasAuthor, HasSlug, HasTimestamps, ModelHelpers, ProvidesSubscriptions, ReceivesReplies, HasTags, HasLikes;
 
     const TABLE = 'threads';
 

routes/web.php

@@ -62,6 +62,8 @@
     Route::put('{thread}/unmark-solution', 'ThreadsController@unmarkSolution')->name('threads.solution.unmark');
     Route::get('{thread}/subscribe', 'ThreadsController@subscribe')->name('threads.subscribe');
     Route::get('{thread}/unsubscribe', 'ThreadsController@unsubscribe')->name('threads.unsubscribe');
+    Route::put('{thread}/like', 'ThreadsController@like')->name('threads.like');
+    Route::delete('{thread}/unlike', 'ThreadsController@unlike')->name('threads.unlike');
 
     Route::get('tags/{tag}', 'TagsController@show')->name('forum.tag');
 });