<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Product;
use App\Models\Category;
use App\Models\Brand;
use App\Models\ProductSize;
use Illuminate\Support\Str;

class ProductController extends Controller
{
    public function index()
    {
        $products = Product::with('sizes')->paginate(10);
        return view('backend.product.index', compact('products'));
    }

    public function create()
    {
        $brands = Brand::get();
        $categories = Category::where('is_parent', 1)->get();
        return view('backend.product.create', compact('categories', 'brands'));
    }

    public function store(Request $request)
    {
        $validatedData = $request->validate([
            'title' => 'required|string',
            'summary' => 'required|string',
            'description' => 'nullable|string',
            'photo' => 'required|string',
            'stock' => 'required|numeric',

            'cat_id' => 'required|exists:categories,id',
            'brand_id' => 'nullable|exists:brands,id',
            'child_cat_id' => 'nullable|exists:categories,id',
            'is_featured' => 'sometimes|in:1',
            'status' => 'required|in:active,inactive',
            'condition' => 'required|in:default,new,hot',
            'price' => 'required|numeric',
            'discount' => 'nullable|numeric',
        ]);

        $validatedData['slug'] = Str::slug($request->title) . '-' . uniqid();
        $validatedData['is_featured'] = $request->input('is_featured', 0);

        $product = Product::create($validatedData);

        $sizes = $request->input('size', []);
        $stocks = $request->input('stock', []);

        foreach ($sizes as $index => $size) {
            if (!empty($size) && isset($stocks[$index]) && is_numeric($stocks[$index])) {
                ProductSize::create([
                    'product_id' => $product->id,
                    'size' => $size,
                    'stock' => $stocks[$index],
                ]);
            }
        }

        return redirect()->route('product.index')->with(
            $product ? 'success' : 'error',
            $product ? 'Product Successfully added' : 'Please try again!!'
        );
    }

    public function show($id)
    {
        // Optional
    }

    public function edit($id)
    {
        $brands = Brand::get();
        $product = Product::with('sizes')->findOrFail($id);
        $categories = Category::where('is_parent', 1)->get();
        return view('backend.product.edit', compact('product', 'brands', 'categories'));
    }

    public function update(Request $request, $id)
{
    $product = Product::findOrFail($id);

    $validatedData = $request->validate([
        'title' => 'required|string',
        'summary' => 'required|string',
        'description' => 'nullable|string',
        'photo' => 'required|string',
        'quantity' => 'required|numeric',
        'cat_id' => 'required|exists:categories,id',
        'child_cat_id' => 'nullable|exists:categories,id',
        'is_featured' => 'sometimes|in:1',
        'brand_id' => 'nullable|exists:brands,id',
        'status' => 'required|in:active,inactive',
        'condition' => 'required|in:default,new,hot',
        'price' => 'required|numeric',
        'discount' => 'nullable|numeric',
    ]);

    $validatedData['is_featured'] = $request->input('is_featured', 0);

    $status = $product->update($validatedData);

    // Handle size & stock
    $sizes = $request->input('size', []);
    $stocks = $request->input('stock', []);

    $product->sizes()->delete();

    foreach ($sizes as $index => $size) {
        if (!empty($size) && isset($stocks[$index]) && is_numeric($stocks[$index])) {
            ProductSize::create([
                'product_id' => $product->id,
                'size' => $size,
                'stock' => $stocks[$index],
            ]);
        }
    }

    return redirect()->route('product.index')->with(
        $status ? 'success' : 'error',
        $status ? 'Product Successfully updated' : 'Please try again!!'
    );
}


    public function destroy($id)
    {
        $product = Product::findOrFail($id);
        $status = $product->delete();

        return redirect()->route('product.index')->with(
            $status ? 'success' : 'error',
            $status ? 'Product successfully deleted' : 'Error while deleting product'
        );
    }
}