<?php

namespace App\Http\Controllers\Customer;

use App\Http\Controllers\Controller;
use App\Models\Order;
use App\Models\Cart;
use App\Models\CartItem;
use App\Models\Product;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use App\Http\Controllers\Site\ReportController ;
use Rooyesh\Wallet\interfaces\TransactionInterface;
use Rooyesh\Wallet\interfaces\WalletInterface;
use Rooyesh\Wallet\models\Wallet;
use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
use App\Models\Price;
use App\Http\Controllers\Admin\ProductController;
use App\Http\Controllers\Admin\GiftCardController;


class CartController extends Controller
{
    private function getOrCreateCart(Request $request)
    {
        $sessionId = $request->header('X-Cart-Session');

        if (!$sessionId) {
            $sessionId = (string) Str::uuid();
        }

        $cart = Cart::firstOrCreate(
            [
                'session_id' => $sessionId,
                'sts' => 1,
            ]
        );

        return [$cart, $sessionId];
    }

    public function getCart(Request $request)
    {
        [$cart, $sessionId] = $this->getOrCreateCart($request);

        return response()->json([
            'cart' => $cart->load('items'),
            'session_id' => $sessionId
        ]);
    }

    public function addItem(Request $request)
    {
        [$cart, $sessionId] = $this->getOrCreateCart($request);
        $product = Product::select('id', 'title', 'group_type')->where('id', $request->product_id)->first();
        $item = CartItem::where('cart_id', $cart->id)
            ->where('product_id', $request->product_id)
            ->first();

        if ($item) {
            $item->increment('quantity');
        } else {
            CartItem::create([
                'cart_id' => $cart->id,
                'product_id' => $product->id,
                'title' => $product->title,
                'group_type' => $product->group_type,
                'quantity' => 1,
            ]);
        }

        return response()->json([
            'message' => 'محصول اضافه شد.',
            'session_id' => $sessionId
        ]);
    }

    public function removeItem(Request $request)
    {
        $request->validate([
            'product_id' => 'required|integer',
        ]);

        $sessionId = $request->header('X-Cart-Session');

        if (!$sessionId) {
            return response()->json([
                'message' => 'Cart session not found'
            ], 400);
        }

        $cart = Cart::where('session_id', $sessionId)
            ->where('sts', 'open')
            ->first();

        if (!$cart) {
            return response()->json([
                'message' => 'Active cart not found'
            ], 404);
        }

        $item = CartItem::where('cart_id', $cart->id)
            ->where('product_id', $request->product_id)
            ->first();

        if (!$item) {
            return response()->json([
                'message' => 'Item not found in cart'
            ], 404);
        }

        if ($item->quantity > 1) {
            $item->decrement('quantity');
        } else {
            $item->delete();
        }

        return response()->json([
            'message' => 'Item updated successfully'
        ]);
    }

    public function checkout(Request $request)
    {
//        return $request;

        $data = $request->json()->all();
        $user= auth()->user();
        if ($user->is_legal == 0 || !$user) {
            return response()->json(['massage' => 'شما باید اول خود را احراز هویت کنید'], 422);

        }

//        $data->validate([
//            'session_id' => 'required'
//        ]);
//dd($data['products']);
        if(isset($data['gateway']) && $data['gateway'] !== 'wallet'){
            return response()->json(['massage' => "Under construction👷🏻"], 501);
        }
        if( isset($data['session_id']) && ($data['session_id'] !== '' || $data['session_id'] !== null)){
            $cart = Cart::where('session_id', $data['session_id'])
                ->where('sts', 1)
                ->first()->load('items');
            if(!$cart){
                return response()->json(['message' => 'سبد خرید پیدا نشد!'], 404);
            }

            // اتصال سبد به کاربر لاگین شده
            $cart->update([
                'customer_id' => auth('customer')->id(),
    //            'sts' => 2,
            ]);
        } else{
            $items = [];

            [$cart, $sessionId] = $this->getOrCreateCart($request);

            $cart->customer_id = auth('customer')->id();
            $cart->save();

            $productIds = collect($data)
                ->pluck('product_id')
                ->unique()
                ->values();

            $products = Product::select('id', 'title', 'group_type', 'inventory', 'amount', 'percent_fee_buy', 'cash_fee_buy', 'price_profit')
                ->whereIn('id', $productIds)
                ->get()
                ->keyBy('id');

            $numbers = collect($data)
                ->mapWithKeys(function ($item) {
                    return [
                        $item['product_id'] => $item['number'] ?? 1
                    ];
                });
            foreach ($products as $product) {
                if(($product->inventory - $numbers[$product->id])  < 0){
                    return response()->json(['message' => "موجودی محصول {$product->title} کافی نیست!"], 422);
                }
                $items[] = [
                    'cart_id'    => $cart->id,
                    'product_id' => $product->id,
                    'title'      => $product->title,
                    'group_type' => $product->group_type,
                    'quantity'   => $numbers[$product->id] ?? 1,
                    'created_at'=> now(),
                    'updated_at'=> now(),
                ];
            }

            CartItem::insert($items);

            $cart = Cart::where('session_id', $cart->session_id)
                ->first()
                ->load('items');
        }

        $wallet = Wallet::where('owner',auth('customer')->id())->whereNull('fund_id')->whereNull('product_id')
            ->first();

        $priceRow = Price::latest()->first();
        $goldPrice = $priceRow->price;
        $data['price'] = $goldPrice;
        $data['price_id'] = $priceRow->id;
        $data['price_original'] = $goldPrice;

        $data['customer_id'] = auth('customer')->id();

        $total_price = 0;
        $total_amount = 0;
        $product_fees = 0;
        $wallet_interface = new WalletInterface($data['customer_id'], auth('customer')->user()->type);

        // قیمت‌گیری لحظه‌ای
        $data['amount'] = 0;
        $data['service_charge_percentage'] = 0;
        $data['fee'] = 0;
        foreach ($cart->items as $item) {

            $product = Product::find($item->product_id);

            // کارمزد درصدی هر واحد از محصول
            $feeAmount = $product->percent_fee_buy * $product->amount;
            //وزن نهایی هر واحد از محصول با احتساب کارمزد
            $finalAmount = $product->amount + $feeAmount;
            //وزن کل محصول با احتساب تعداد و کارمزد
            $total_amount += $product->amount * $item->quantity;
            //محاسبه مجموع وزن سبد با احتساب کارمزد
            $data['amount'] += $finalAmount * $item->quantity;
            //محاسبه مجموع درصد کارمزد سبد با احتساب تعداد
            $data['service_charge_percentage'] += $product->percent_fee_buy * $item->quantity;
            //محاسبه مجموع کارمزد ثابت سبد با احتساب تعداد
            $data['fee'] += $product->cash_fee_buy * $item->quantity;
            // قیمت نهایی هر گرم
            $priceWithFee = $goldPrice + $data['fee'];
            //محاسبه مجموع کارمزد ثابت سبد با احتساب تعداد
            $product_fees += $product->cash_fee_buy;
            // قیمت آیتم
            $itemTotalPrice = $finalAmount * $priceWithFee;

            // قیمت کل این آیتم با احتساب تعداد
            $itemTotalPrice = $item->quantity * $itemTotalPrice;
            //مبلغ سبد خرید با احتساب این آیتم
            $total_price += $itemTotalPrice;

            // ذخیره شفاف برای گزارش و فاکتور
            $item->update([
                'price' => $itemTotalPrice,
                'gold_price' => $goldPrice
            ]);
        }
        //قیمت هر گرم با احتساب کارمزد ثابت
        $total_price_with_fees = $goldPrice + $product_fees;
        //مجموع کارمز ثابت و متغیر در سبد خرید
        $data['total_fee'] = $data['fee'] + ($total_price_with_fees * ($data['service_charge_percentage'] * $total_amount));
        //قیمت هر گرم بدون احتساب کارمزدها
        $data['total_price_original'] = $total_amount * $goldPrice;
        //کارمزد طلایی
        $data['service_charge'] = $data['service_charge_percentage'] * $total_amount;
        //کارمزد ریالی
        $data['service_charge_price'] = $data['service_charge'] * $data['price_original'];
        //قیمت کل برای مشتری
        $data['total_price'] = $total_price;
        //مقدار قابل پرداخت
        $data['payment_amount'] = $data['total_price'];
        if(!empty($data[0]['discount_code'])){
            $discount = new GiftCardController();
            $discount = $discount->useDiscount($data[0]['discount_code'], $data['customer_id']);
            $data['discount'] = true;
            if(!empty($discount['amount'])){
                $data['payment_amount'] = $data['total_price'] = $data['total_price'] - ($data['total_price'] * (float)$discount['amount']);
            }
        }
        $data['cart_id'] = (int)$cart->id;
        $data['sts'] = 1;

        if ($wallet->cash < $data['total_price']){
            throw new UnprocessableEntityHttpException('موجودی کیف پول شما کافی نیست.');
        }
        $data['direction'] = 1; // خرید
        $data['pay_at'] = now();
        $order = Order::create($data);
        $cart->order_id = $order->id;
        $cart->save();
        $tr = new TransactionInterface($wallet_interface, $_inp = [
            "cash" => $data['payment_amount'],
            'expire_at' => now(),
            'active' => true,
            'order_id' => $order->id,
            'start_at' => now(),
            'title' => "سبد خرید"
        ], 12, false, false);
        foreach ($cart->items as $item) {
            $wallet_interface_product = new WalletInterface(auth('customer')->id(), auth('customer')->user()->type, null, $item->product_id);
            $wallet_interface_product->wallet->gold = intval($wallet_interface_product->wallet->gold);
            $wallet_interface_product->wallet->save();
            new TransactionInterface($wallet_interface_product, [
                "gold" => $item->quantity,
                "product_id" => $item->product_id,
                'expire_at' => now(),
                'active' => true,
                'order_id' => $order->id,
                'start_at' => now(),
            ], 1, true, false);

        }

        $order->sts = 2; // پرداخت شده
//        $order->direction = 3; // سبد خرید
        $order->payment_sts = 4; // وضعیت پرداخت شده
        $order->save();

        foreach ($cart->items as $item) {
            Product::where('id', $item->product_id)->decrement('inventory', $item->quantity);

            // $product = Product::find($item->product_id);
            // $product->decrement('inventory', $item->quantity);
        }

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