<?php

namespace App\Services\Api\Order;

use App\Repositories\Api\Service\ServiceRepository;
use App\Repositories\Api\Invoice\InvoiceRepository;
use App\Repositories\Api\Order\OrderRepository;
use Illuminate\Support\Facades\DB;
use App\Enums\Order\OrderStatus;
use Exception;

class OrderService
{
    public function __construct(
        protected OrderRepository $orderRepo,
        protected ServiceRepository $productRepo,
        protected InvoiceRepository $invoiceRepo
    ) {}

    public function create(array $data, $customer)
    {
        // Check for existing pending orders
        if ($this->orderRepo->hasPendingOrder($customer->id)) {
            throw new Exception('Bạn có đơn hàng chưa thanh toán. Vui lòng thanh toán trước khi tạo đơn mới.');
        }

        return DB::transaction(function () use ($data, $customer) {

            $product = $this->productRepo->find($data['product_id']);

            if (!$product) {
                throw new Exception('Sản phẩm không tồn tại');
            }

            $price = $this->productRepo
                ->getPricing($product->id, $data['billing_cycle']);

            if (is_null($price)) {
                throw new Exception('Không tìm thấy giá cho sản phẩm này');
            }

            $order = $this->orderRepo->create([
                'order_num' => \App\Helpers\OrderHelper::generateOrderNumber(),
                'customer_id' => $customer->id,
                'amount' => $price,
                'status' => OrderStatus::PENDING->value
            ]);

            $this->orderRepo->createItem($order->id, [
                'product_id' => $product->id,
                'billing_cycle' => $data['billing_cycle'],
                'server_name' => $data['server_name'] ?? null,
                'os_id' => $data['os_id'] ?? null,
                'price' => $price,
                'addons' => $data['addons'] ?? []
            ]);

            $invoice = $this->invoiceRepo->createFromOrder($order);

            return [
                'order' => $order,
                'invoice' => $invoice
            ];
        });
    }

    public function pay($order, string $method)
    {
        if ($order->status !== OrderStatus::PENDING->value) {
            throw new Exception('Đơn hàng đã được xử lý hoặc hủy bỏ.');
        }

        return $this->orderRepo->processPayment($order, $method);
    }
}