<?php

namespace App\Services\Client\Traits;

use App\Enums\OrderStatus;
use App\Models\MemberUser;
use App\Models\Order;
use App\Models\WalletRefundRecord;
use Illuminate\Support\Facades\Log;

trait HandlesRefunds
{
    /**
     * 处理订单取消退款
     */
    protected function handleCancelRefund(Order $order): void
    {
        $user = $order->user;

        $deductAmount = $this->calculateDeductAmount($order);
        $this->processRefund($user, $order, $deductAmount);
    }

    /**
     * 计算扣除金额
     */
    private function calculateDeductAmount(Order $order): float
    {
        $baseAmount = $order->payment_amount + $order->balance_amount - $order->traffic_amount;

        return match ($order->state) {
            OrderStatus::ACCEPTED->value => $baseAmount * 0.2, // 已接单扣除20%
            OrderStatus::DEPARTED->value => $baseAmount * 0.5, // 已出发扣除50%
            default => 0
        };
    }

    /**
     * 处理退款流程
     */
    private function processRefund(MemberUser $user, Order $order, float $deductAmount): void
    {
        try {
            $refundAmount = $this->calculateRefundAmount($order, $deductAmount);

            if ($refundAmount > 0) {
                // 退还余额
                $user->wallet->increment('total_balance', $refundAmount);
                $user->wallet->increment('available_balance', $refundAmount);

                // 创建退款记录
                $this->createRefundRecord($order, $refundAmount);
            }
        } catch (\Exception $e) {
            Log::error('处理退款失败', [
                'order_id' => $order->id,
                'user_id' => $user->id,
                'error' => $e->getMessage(),
            ]);
            throw $e;
        }
    }

    /**
     * 创建退款记录
     */
    private function createRefundRecord(Order $order, float $refundAmount): void
    {
        WalletRefundRecord::create([
            'order_id' => $order->id,
            'user_id' => $order->user_id,
            'amount' => $refundAmount,
            'state' => 'success',
        ]);
    }
}