Moved video files to public/videos directory, small refactoring.

app/Http/Controllers/Index.php

@@ -5,14 +5,19 @@ namespace App\Http\Controllers;
 use App\Http\SymfonyCastDl\HtmlParser;
 use App\Http\SymfonyCastDl\SymfonyCastDlService;
 use App\Models\Course;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Http\Request;
 
 class Index extends Controller
 {
     public function index(string $track = null)
     {
-        $courses = Course::where('tracks', 'like', '%'.$track.'%')->with('chapters')->withCount('chapters')->get();
-
+        $courses = Course::where('tracks', 'like', '%' . $track . '%')->with('chapters')->withCount([
+            'chapters',
+            'chapters as chapters_to_sync' => function (Builder $query) {
+                $query->where('sync_offline', 1);
+            },
+        ])->get();
         return view('index', compact(['courses']));
     }