package com.tourguide.modules.order.service;

import com.tourguide.common.huifu.RequestSeqUtil;
import com.tourguide.modules.order.domain.PaymentMethod;
import com.tourguide.modules.order.domain.RefundStatus;
import com.tourguide.modules.order.entity.TourOrder;
import com.tourguide.modules.order.mapper.TourOrderMapper;
import com.tourguide.modules.order.payment.PaymentRefundGateway;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;

@Service
public class OrderRefundService {
    private static final Logger log = LoggerFactory.getLogger(OrderRefundService.class);

    private final TourOrderMapper orderMapper;
    private final PaymentRefundGateway paymentRefundGateway;

    public OrderRefundService(TourOrderMapper orderMapper, PaymentRefundGateway paymentRefundGateway) {
        this.orderMapper = orderMapper;
        this.paymentRefundGateway = paymentRefundGateway;
    }

    public void requestRefund(TourOrder order) {
        if (order.getPaymentTime() == null || RefundStatus.REFUNDED.matches(order.getRefundStatus())) {
            return;
        }
        if (RefundStatus.REFUNDING.matches(order.getRefundStatus())
                && StringUtils.hasText(order.getRefundOrderNo())) {
            return;
        }
        BigDecimal refundAmount = order.getPaymentAmount() == null
                ? order.getAmount() : order.getPaymentAmount();
        if (!StringUtils.hasText(order.getRefundOrderNo())) {
            order.setRefundOrderNo(RequestSeqUtil.generateForBusiness("RF"));
        }
        order.setRefundStatus(RefundStatus.REFUNDING.getCode());
        order.setRefundAmount(refundAmount);
        order.setRefundMethod(order.getPaymentMethod());
        if (PaymentMethod.TEMPORARY_BYPASS.matches(order.getPaymentMethod())) {
            order.setRefundStatus(RefundStatus.REFUNDED.getCode());
            order.setRefundTime(LocalDateTime.now());
            orderMapper.updateById(order);
            return;
        }
        orderMapper.updateById(order);
        try {
            paymentRefundGateway.refund(order, refundAmount);
        } catch (RuntimeException exception) {
            order.setRefundStatus(RefundStatus.REFUND_FAILED.getCode());
            orderMapper.updateById(order);
            log.error("Order refund request failed, orderId={}, orderNo={}, refundOrderNo={}",
                    order.getId(), order.getOrderNo(), order.getRefundOrderNo(), exception);
        }
    }
}