use App\Models\WatchProgress;

public function store(Request $request)
{
    WatchProgress::updateOrCreate(

        [
            'user_id'=>auth()->id(),
            'title_id'=>$request->title_id,
            'episode_id'=>$request->episode_id
        ],

        [
            'position_seconds'=>$request->position_seconds,
            'duration_seconds'=>$request->duration_seconds
        ]
    );

    return response()->json(['success'=>true]);
}