<?php

namespace App\Http\Controllers;
use Auth;
use Illuminate\Http\Request;
use App\Models\Product;
use App\Models\Wishlist;
use App\Models\Cart;
use Illuminate\Support\Str;
use Helper;
class CartController extends Controller
{
    protected $product=null;
    public function __construct(Product $product){
        $this->product=$product;
    }

    public function addToCart(Request $request)
{
    $request->validate([
        'slug' => 'required|string',
        'size' => 'required|string',
        'quantity' => 'required|integer|min:1'
    ]);

    $product = Product::where('slug', $request->slug)->first();

    if (!$product) {
        return back()->with('error', 'Invalid product');
    }

    // Get the stock for the selected size
    $productSize = $product->sizes()->where('size', $request->size)->first();

    if (!$productSize) {
        return back()->with('error', 'Invalid size selected.');
    }

    $requestedQuantity = $request->quantity;

    if ($productSize->stock < $requestedQuantity) {
        return back()->with('error', 'Stock not sufficient for selected size.');
    }

    $unit_price = $product->price - ($product->price * $product->discount) / 100;

    $already_cart = Cart::where('user_id', auth()->id())
        ->where('order_id', null)
        ->where('product_id', $product->id)
        ->where('size', $request->size)
        ->first();

    if ($already_cart) {
        $newQuantity = $already_cart->quantity + $requestedQuantity;

        if ($productSize->stock < $newQuantity) {
            return back()->with('error', 'Stock not sufficient for selected size.');
        }

        $already_cart->quantity = $newQuantity;
        $already_cart->price = $unit_price;
        $already_cart->amount = $newQuantity * $unit_price;
        $already_cart->save();
    } else {
        $cart = new Cart;
        $cart->user_id = auth()->id();
        $cart->product_id = $product->id;
        $cart->size = $request->size;
        $cart->price = $unit_price;
        $cart->quantity = $requestedQuantity;
        $cart->amount = $unit_price * $requestedQuantity;
        $cart->save();
    }

    return response()->json([
        'status' => 'success',
        'message' => 'Product added to cart successfully',
        'cartCount' => Cart::where('user_id', auth()->id())->where('order_id', null)->count()
    ]);
    if ($request->has('redirect_to_cart') && $request->redirect_to_cart === 'true') {
    return redirect()->route('cart')->with('success', 'Product successfully added to cart.');
}

return response()->json([
    'status' => 'success',
    'message' => 'Product added to cart successfully',
    'cartCount' => Cart::where('user_id', auth()->id())->where('order_id', null)->count()
]);

}









    
    public function cartDelete(Request $request){
        $cart = Cart::find($request->id);
        if ($cart) {
            $cart->delete();
            request()->session()->flash('success','Cart successfully removed');
            return back();  
        }
        request()->session()->flash('error','Error please try again');
        return back();       
    }     

    public function cartUpdate(Request $request){
        // dd($request->all());
        if($request->quant){
            $error = array();
            $success = '';
            // return $request->quant;
            foreach ($request->quant as $k=>$quant) {
                // return $k;
                $id = $request->qty_id[$k];
                // return $id;
                $cart = Cart::find($id);
                // return $cart;
                if($quant > 0 && $cart) {
                    // return $quant;

                    if($cart->product->stock < $quant){
                        request()->session()->flash('error','Out of stock');
                        return back();
                    }
                    $cart->quantity = ($cart->product->stock > $quant) ? $quant  : $cart->product->stock;
                    // return $cart;
                    
                    if ($cart->product->stock <=0) continue;
                    $after_price=($cart->product->price-($cart->product->price*$cart->product->discount)/100);
                    $cart->amount = $after_price * $quant;
                    // return $cart->price;
                    $cart->save();
                    $success = 'Cart successfully updated!';
                }else{
                    $error[] = 'Cart Invalid!';
                }
            }
            return back()->with($error)->with('success', $success);
        }else{
            return back()->with('Cart Invalid!');
        }    
    }
    
    
    
    


    public function checkout(Request $request){
    
        return view('frontend.pages.checkout');
    }
}