<?php

namespace App\Http\Controllers;


use App\Models\MusicSubcategory;
use App\Models\MusicCategory;
use Illuminate\Http\Request;
use Illuminate\Support\Str;

class MusicSubcategoryController extends Controller
{
   public function index(Request $request)
    {
        $query = MusicSubcategory::with(['category', 'image', 'playlists' => function($q) {
            $q->where('is_active', true)->orderBy('order');
        }]);
        
        if ($request->has('category_id')) {
            $query->where('category_id', $request->category_id);
        }
        
        $subcategories = $query->where('is_active', true)->orderBy('order')->get();
        
        return response()->json($subcategories);
    }
    
    public function store(Request $request)
    {
        try {
            $data = $request->validate([
                'category_id' => 'required|exists:music_categories,id',
                'name' => 'required|string|max:255',
                'description' => 'nullable|string',
                'image_id' => 'nullable|exists:images,id',
                'order' => 'nullable|integer',
                'is_active' => 'nullable|boolean',
            ]);
            
            $slug = Str::slug($data['name']);
            
            // Check for duplicate in same category
            $existing = MusicSubcategory::where('category_id', $data['category_id'])
                ->where('slug', $slug)
                ->first();
            
            if ($existing) {
                return response()->json([
                    'message' => 'A subcategory with this name already exists in this category',
                    'errors' => ['name' => ['The subcategory name must be unique within this category.']]
                ], 422);
            }
            
            $data['slug'] = $slug;
            $subcategory = MusicSubcategory::create($data);
            
            return response()->json([
                'message' => 'Subcategory created successfully',
                'subcategory' => $subcategory->load(['category', 'image'])
            ], 201);
            
        } catch (\Exception $e) {
            return response()->json([
                'message' => 'An error occurred while creating the subcategory',
                'error' => $e->getMessage()
            ], 500);
        }
    }
    
    public function show($id)
    {
        $subcategory = MusicSubcategory::with([
            'category',
            'image',
            'playlists' => function($q) {
                $q->with(['image', 'musics' => function($q2) {
                    $q2->where('music.is_active', true)->with('image')->orderBy('music_playlist.order');
                }])->where('is_active', true)->orderBy('order');
            }
        ])->findOrFail($id);
        
        return response()->json($subcategory);
    }
    
    public function update(Request $request, $id)
    {
        $subcategory = MusicSubcategory::findOrFail($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']);
        }
        
        $subcategory->update($data);
        
        return response()->json([
            'message' => 'Subcategory updated successfully',
            'subcategory' => $subcategory->load(['category', 'image'])
        ]);
    }
    
    public function destroy($id)
    {
        $subcategory = MusicSubcategory::findOrFail($id);
        $subcategory->delete();
        
        return response()->json(['message' => 'Subcategory deleted successfully']);
    }
}