<?php

namespace App\Http\Controllers;
use App\Models\Like;
use Illuminate\Http\Request;
use Illuminate\Database\Eloquent\Relations\MorphTo;

class LikeController extends Controller
{
     /**
     * Like an item (music or media)
     */
    public function like(Request $request)
    {
        $request->validate([
            'type' => 'required|string|in:music,media,playlist',
            'id' => 'required|integer',
        ]);
        
        $model = $this->getModel($request->type, $request->id);
        
        if (!$model) {
            return response()->json([
                'message' => 'Item not found'
            ], 404);
        }
        
        $result = $model->addLike();
        
        return response()->json([
            'message' => 'Item liked successfully',
            'is_liked' => true,
            'likes_count' => $model->likes_count
        ]);
    }
    
    /**
     * Unlike an item
     */
    public function unlike(Request $request)
    {
        $request->validate([
            'type' => 'required|string|in:music,media,playlist',
            'id' => 'required|integer',
        ]);
        
        $model = $this->getModel($request->type, $request->id);
        
        if (!$model) {
            return response()->json([
                'message' => 'Item not found'
            ], 404);
        }
        
        $result = $model->removeLike();
        
        return response()->json([
            'message' => 'Item unliked successfully',
            'is_liked' => false,
            'likes_count' => $model->likes_count
        ]);
    }
    
    /**
     * Toggle like status
     */
    public function toggleLike(Request $request)
    {
        $request->validate([
            'type' => 'required|string|in:music,media,playlist',
            'id' => 'required|integer',
        ]);
        
        $model = $this->getModel($request->type, $request->id);
        
        if (!$model) {
            return response()->json([
                'message' => 'Item not found'
            ], 404);
        }
        
        $result = $model->toggleLike();
        
        return response()->json([
            'message' => $result ? 'Item liked successfully' : 'Item unliked successfully',
            'is_liked' => $model->is_liked,
            'likes_count' => $model->likes_count
        ]);
    }
    
    /**
     * Get all liked items for the authenticated user
     */
    public function myLikedItems(Request $request)
    {
        $type = $request->get('type'); // Optional filter by type (music or media)
        
        $query = Like::with(['likeable' => fn (MorphTo $m) => $m->morphWith([
                \App\Models\Media::class => ['image', 'detailImage', 'categories', 'subCategories', 'tags'],
                \App\Models\Music::class => ['image', 'playlists', 'tags'],
                \App\Models\MusicPlaylist::class => ['image', 'detailImage', 'categories', 'subcategories'],
            ])])
            ->where('user_id', auth()->id());
        
        if ($type) {
            $modelClass = $this->getModelClass($type);
            $query->where('likeable_type', $modelClass);
        }
        
        $likedItems = $query->latest()->paginate(20);

          return response()->json([
            'data' => $likedItems,
            'total' => $likedItems->total(),
            'types' => [
                'music' => 'App\\Models\\Music',
                'media' => 'App\\Models\\Media',
                'playlist' => 'App\\Models\\MusicPlaylist',
            ]
        ]);
        // Transform the response
        // $transformedItems = $likedItems->map(function ($likeItem) {
        //     $item = $likeItem->likeable;
            
        //     if (!$item) return null;
            
        //     $baseData = [
        //         'like_id' => $likeItem->id,
        //         'liked_at' => $likeItem->created_at,
        //         'type' => class_basename($likeItem->likeable_type),
        //         'is_liked' => true,
        //     ];
            
        //     // Add type-specific data
        //     if ($item instanceof \App\Models\Music) {
        //         return array_merge($baseData, [
        //             'id' => $item->id,
        //             'title' => $item->title,
        //             'artist' => $item->artist,
        //             'duration' => $item->duration_formatted ?? $item->duration,
        //             'image_url' => $item->image_url,
        //             'likes_count' => $item->likes_count,
        //             'type_display' => 'music'
        //         ]);
        //     } elseif ($item instanceof \App\Models\Media) {
        //         return array_merge($baseData, [
        //             'id' => $item->id,
        //             'title' => $item->title,
        //             'caption' => $item->caption,
        //             'media_type' => $item->type,
        //             'duration' => $item->duration,
        //             'image_url' => $item->image->url ?? null,
        //             'likes_count' => $item->likes_count,
        //             'type_display' => 'media'
        //         ]);
        //     }
            
        //     return $baseData;
        // })->filter();
        
        // return response()->json([
        //     'data' => $transformedItems,
        //     'total' => $likedItems->total(),
        //     'current_page' => $likedItems->currentPage(),
        //     'last_page' => $likedItems->lastPage(),
        //     'per_page' => $likedItems->perPage(),
        // ]);
    }
    
    /**
     * Check if specific item is liked by user
     */
    public function checkLiked(Request $request)
    {
        $request->validate([
            'type' => 'required|string|in:music,media,playlist',
            'id' => 'required|integer',
        ]);
        
        $model = $this->getModel($request->type, $request->id);
        
        if (!$model) {
            return response()->json([
                'message' => 'Item not found'
            ], 404);
        }
        
        return response()->json([
            'is_liked' => $model->is_liked,
            'likes_count' => $model->likes_count
        ]);
    }
    
    /**
     * Get top liked items
     */
    public function topLiked(Request $request)
    {
        $type = $request->get('type', 'music'); // Default to music
        $limit = $request->get('limit', 10);
        
        $modelClass = $this->getModelClass($type);
        
        $items = $modelClass::with(['image'])
            ->withCount('likes')
            ->where(function($query) use ($modelClass) {
                if (property_exists($modelClass, 'type')) {
                    $query->where('type', 'public');
                }
                if (property_exists($modelClass, 'visibility')) {
                    $query->where('visibility', 'public');
                }
            })
            ->orderBy('likes_count', 'desc')
            ->limit($limit)
            ->get();
        
        return response()->json([
            'data' => $items,
            'type' => $type,
            'total' => $items->count()
        ]);
    }
    
    private function getModel($type, $id)
    {
        $modelClass = $this->getModelClass($type);
        return $modelClass::find($id);
    }
    
    private function getModelClass($type)
    {
        $models = [
            'music' => \App\Models\Music::class,
            'media' => \App\Models\Media::class,
            'playlist' => \App\Models\MusicPlaylist::class,
        ];

        return $models[$type] ?? null;
    }
}