<?php

namespace App\Http\Controllers;

use App\Models\MusicPlaylist;
use Illuminate\Http\Request;
use Illuminate\Support\Str;

class MusicPlaylistController extends Controller
{
   public function index(Request $request)
        {
            $query = MusicPlaylist::with(['category', 'subcategory', 'image']);
            
            if ($request->has('category_id')) {
                $query->where('category_id', $request->category_id)->whereNull('subcategory_id');
            }
            
            if ($request->has('subcategory_id')) {
                $query->where('subcategory_id', $request->subcategory_id);
            }
            
            $playlists = $query->where('is_active', true)->orderBy('order')->get();
            
            return response()->json($playlists);
        }
            
    public function store(Request $request)
{
    $data = $request->validate([
        'category_id' => 'nullable|exists:music_categories,id',
        'subcategory_id' => 'nullable|exists:music_subcategories,id',
        'name' => 'required|string|max:255',
        'description' => 'nullable|string',
        'image_id' => 'nullable|exists:images,id',
        'order' => 'nullable|integer',
        'is_active' => 'nullable|boolean',
    ]);
    
    // Ensure either category_id or subcategory_id is provided
    if (!$data['category_id'] && !$data['subcategory_id']) {
        return response()->json([
            'message' => 'Either category_id or subcategory_id is required'
        ], 422);
    }
    
    $data['slug'] = Str::slug($data['name']);
    
    $playlist = MusicPlaylist::create($data);
    
    return response()->json([
        'message' => 'Playlist created successfully',
        'playlist' => $playlist->load(['category', 'subcategory', 'image'])
    ], 201);
}
    
    public function show($id)
        {
            $playlist = MusicPlaylist::with([
                'category', 
                'subcategory',
                'image',
                'musics' => function($q) {
                    $q->where('is_active', true)
                    ->with(['image', 'tags'])
                    ->orderBy('order');
                },
                'comments' => function($q) { // Add comments relationship
                    $q->with('user')->latest()->limit(10);
                }
            ])->findOrFail($id);
            $userComment = $playlist->userComment();
            $comments = $playlist->comments()
                ->with('user')
                ->latest()
                ->paginate(15);
            
            return response()->json([
                'playlist' => $playlist,
                'statistics' => [
                    'total_musics' => $playlist->musics->count(),
                    'total_duration' => $playlist->total_duration,
                    'total_comments' => $playlist->comments_count,
                    'total_likes' => $playlist->likes_count,
                    'total_saves' => $playlist->saved_count,
                ],
                'user_interaction' => [
                    'has_commented' => $playlist->has_user_commented,
                    'user_comment' => $playlist->user_comment,
                    'user_comment_id' => $playlist->user_comment_id,
                    'has_liked' => $playlist->is_liked,
                    'has_saved' => $playlist->is_saved,
                ],
                'comments' => $comments,
            ]);
        }
    
    public function update(Request $request, $id)
    {
        $playlist = MusicPlaylist::findOrFail($id);
        
        $data = $request->validate([
            'category_id' => 'sometimes|exists:music_categories,id',
            'name' => 'sometimes|string|max:255',
            'description' => 'nullable|string',
            'image_id' => 'nullable|exists:images,id',
            'order' => 'nullable|integer',
            'is_active' => 'nullable|boolean',
        ]);
        
        if (isset($data['name'])) {
            $data['slug'] = Str::slug($data['name']);
        }
        
        $playlist->update($data);
        
        return response()->json([
            'message' => 'Playlist updated successfully',
            'playlist' => $playlist->load(['category', 'image'])
        ]);
    }
    
    public function destroy($id)
    {
        $playlist = MusicPlaylist::findOrFail($id);
        $playlist->delete();
        
        return response()->json(['message' => 'Playlist deleted successfully']);
    }
}