namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Category;
use Illuminate\Http\Request;
use Illuminate\Support\Str;

class CategoryController extends Controller
{
    public function index(Request $request)
    {
        $query = Category::withCount('services');

        // Search
        if ($request->has('search')) {
            $search = $request->search;
            $query->where('name', 'like', "%{$search}%")
                  ->orWhere('description', 'like', "%{$search}%");
        }

        // Filter by status
        if ($request->has('status') && $request->status != 'all') {
            $query->where('status', $request->status);
        }

        $categories = $query->orderBy('sort_order')->paginate(20);

        return view('admin.categories.index', compact('categories'));
    }

    public function create()
    {
        $categories = Category::orderBy('name')->get();
        return view('admin.categories.create', compact('categories'));
    }

    public function store(Request $request)
    {
        $request->validate([
            'name' => 'required|string|max:100',
            'slug' => 'nullable|string|max:100|unique:categories',
            'description' => 'nullable|string',
            'icon' => 'nullable|string|max:255',
            'banner_image' => 'nullable|image|max:2048',
            'parent_id' => 'nullable|exists:categories,id',
            'sort_order' => 'nullable|integer',
            'status' => 'required|in:active,inactive',
            'meta_title' => 'nullable|string|max:255',
            'meta_description' => 'nullable|string',
            'meta_keywords' => 'nullable|string',
        ]);

        $data = $request->except('banner_image');

        // Generate slug if not provided
        if (empty($data['slug'])) {
            $data['slug'] = Str::slug($request->name);
        }

        // Handle banner image
        if ($request->hasFile('banner_image')) {
            $path = $request->file('banner_image')->store('categories', 'public');
            $data['banner_image'] = $path;
        }

        $category = Category::create($data);

        // Log activity
        auth()->guard('admin')->user()->logActivity(
            'Created category: ' . $category->name,
            ['category_id' => $category->id]
        );

        return redirect()->route('admin.categories.index')
            ->with('success', 'Category created successfully.');
    }

    public function edit(Category $category)
    {
        $categories = Category::where('id', '!=', $category->id)
            ->orderBy('name')
            ->get();

        return view('admin.categories.edit', compact('category', 'categories'));
    }

    public function update(Request $request, Category $category)
    {
        $request->validate([
            'name' => 'required|string|max:100',
            'slug' => 'nullable|string|max:100|unique:categories,slug,' . $category->id,
            'description' => 'nullable|string',
            'icon' => 'nullable|string|max:255',
            'banner_image' => 'nullable|image|max:2048',
            'parent_id' => 'nullable|exists:categories,id',
            'sort_order' => 'nullable|integer',
            'status' => 'required|in:active,inactive',
            'meta_title' => 'nullable|string|max:255',
            'meta_description' => 'nullable|string',
            'meta_keywords' => 'nullable|string',
        ]);

        $data = $request->except('banner_image');

        // Generate slug if not provided
        if (empty($data['slug'])) {
            $data['slug'] = Str::slug($request->name);
        }

        // Handle banner image
        if ($request->hasFile('banner_image')) {
            // Delete old image
            if ($category->banner_image) {
                \Storage::disk('public')->delete($category->banner_image);
            }
            
            $path = $request->file('banner_image')->store('categories', 'public');
            $data['banner_image'] = $path;
        }

        $category->update($data);

        // Log activity
        auth()->guard('admin')->user()->logActivity(
            'Updated category: ' . $category->name,
            ['category_id' => $category->id]
        );

        return redirect()->route('admin.categories.index')
            ->with('success', 'Category updated successfully.');
    }

    public function destroy(Category $category)
    {
        // Check if category has services
        if ($category->services()->exists()) {
            return back()->with('error', 'Cannot delete category with existing services.');
        }

        // Check if category has subcategories
        if ($category->children()->exists()) {
            return back()->with('error', 'Cannot delete category with subcategories.');
        }

        // Delete banner image
        if ($category->banner_image) {
            \Storage::disk('public')->delete($category->banner_image);
        }

        $name = $category->name;
        $category->delete();

        // Log activity
        auth()->guard('admin')->user()->logActivity(
            'Deleted category: ' . $name,
            ['category_id' => $category->id]
        );

        return redirect()->route('admin.categories.index')
            ->with('success', 'Category deleted successfully.');
    }

    public function updateOrder(Request $request)
    {
        $request->validate([
            'order' => 'required|array',
            'order.*.id' => 'required|exists:categories,id',
            'order.*.sort_order' => 'required|integer',
        ]);

        foreach ($request->order as $item) {
            Category::where('id', $item['id'])->update(['sort_order' => $item['sort_order']]);
        }

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

    public function toggleStatus(Category $category)
    {
        $category->update([
            'status' => $category->status === 'active' ? 'inactive' : 'active'
        ]);

        return response()->json([
            'success' => true,
            'status' => $category->status
        ]);
    }
}