All images now have colour palettes

app/Models/Image.php

@@ -25,6 +25,8 @@ use Illuminate\Database\Eloquent\Model;
 use Config;
 use Illuminate\Support\Str;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
+use ColorThief\ColorThief;
+use Helpers;
 
 /**
  * Poniverse\Ponyfm\Models\Image
@@ -36,6 +38,7 @@ use Symfony\Component\HttpFoundation\File\UploadedFile;
  * @property integer $size
  * @property string $hash
  * @property integer $uploaded_by
+ * @property string $palette
  * @property \Carbon\Carbon $created_at
  * @property \Carbon\Carbon $updated_at
  * @method static \Illuminate\Database\Query\Builder|\Poniverse\Ponyfm\Models\Image whereId($value)
@@ -191,4 +194,15 @@ class Image extends Model
             mkdir($destination, 0777, true);
         }
     }
+
+    public function getPalette() {
+        if ($this->palette === null) {
+            $palette = ColorThief::getPalette($this->getFile(Image::NORMAL), 2);
+            $formatted_palette = array_map("Helpers::rgb2hex", $palette);
+            $this->palette = json_encode($formatted_palette);
+            $this->save();
+        }
+
+        return json_decode($this->palette);
+    }
 }

app/Models/Track.php

@@ -500,6 +500,7 @@ class Track extends Model implements Searchable, Commentable, Favouritable
                 'normal' => $track->getCoverUrl(Image::NORMAL),
                 'original' => $track->getCoverUrl(Image::ORIGINAL)
             ],
+            'cover_colors' => $track->cover->getPalette(),
             'streams' => [
                 'mp3' => $track->getStreamUrl('MP3'),
                 'aac' => (!Config::get('app.debug') || is_file($track->getFileFor('AAC'))) ? $track->getStreamUrl('AAC') : null,

database/migrations/2017_05_19_124056_AddPaletteToImages.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddPaletteToImages extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('images', function(Blueprint $table) {
+            $table->json('palette')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('images', function (Blueprint $table) {
+            $table->dropColumn(['palette']);
+        });
+    }
+}