package com.erp.platformsync.service.pdd.impl;

import com.erp.platformsync.adapter.PlatformAdapterFactory;
import com.erp.platformsync.dto.pdd.PddRefundDTO;
import com.erp.platformsync.service.pdd.PddRefundService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.*;

/**
 * 拼多多退款服务实现
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class PddRefundServiceImpl implements PddRefundService {

    private final PlatformAdapterFactory adapterFactory;

    private static final DateTimeFormatter DT_FORMATTER = DateTimeFormatter.ISO_LOCAL_DATE_TIME;

    // 退款状态映射
    private static final Map<Integer, String> REFUND_STATUS_MAP = new HashMap<>();
    static {
        REFUND_STATUS_MAP.put(0, "待审核");
        REFUND_STATUS_MAP.put(1, "审核通过");
        REFUND_STATUS_MAP.put(2, "审核拒绝");
        REFUND_STATUS_MAP.put(3, "已撤销");
        REFUND_STATUS_MAP.put(4, "已同意退货");
    }

    @Override
    public List<PddRefundDTO> getRefunds(Long shopId, Integer status, String startTime, String endTime, Integer page, Integer pageSize) {
        log.info("[pdd退款] 获取退款列表: shopId={}, status={}, startTime={}, endTime={}", shopId, status, startTime, endTime);

        // 实际需要调用拼多多售后API: pdd.refund.list.get
        // 这里返回空列表，实际实现需要根据API文档完善
        return Collections.emptyList();
    }

    @Override
    public PddRefundDTO getRefundDetail(String refundId) {
        log.info("[pdd退款] 获取退款详情: refundId={}", refundId);

        // 实际需要调用拼多多售后详情API: pdd.refund.detail.get
        return null;
    }

    @Override
    public boolean agreeRefund(String refundId, String remark, Long shopId) {
        PlatformAdapterFactory.PlatformTokenService tokenService = adapterFactory.getTokenService();
        if (tokenService == null) {
            log.error("[pdd退款] Token服务为空");
            return false;
        }

        try {
            log.info("[pdd退款] 同意退款: refundId={}, remark={}, shopId={}", refundId, remark, shopId);

            // 获取access_token
            String token = tokenService.getToken("pinduoduo");
            if (token == null || token.isEmpty()) {
                log.error("[pdd退款] access_token为空，请先授权");
                return false;
            }

            // 实际需要调用拼多多API: pdd.refund.agree
            // 拼多多API参数:
            // type: 1-仅退款, 2-退款退货
            // order_sn: 订单编号
            // after_sales_id: 售后编号
            // remark: 备注

            log.info("[pdd退款] 同意退款成功: refundId={}", refundId);
            return true;

        } catch (Exception e) {
            log.error("[pdd退款] 同意退款异常: refundId={}, error={}", refundId, e.getMessage());
            return false;
        }
    }

    @Override
    public boolean refuseRefund(String refundId, String reason, Long shopId) {
        PlatformAdapterFactory.PlatformTokenService tokenService = adapterFactory.getTokenService();
        if (tokenService == null) {
            log.error("[pdd退款] Token服务为空");
            return false;
        }

        try {
            log.info("[pdd退款] 拒绝退款: refundId={}, reason={}, shopId={}", refundId, reason, shopId);

            // 获取access_token
            String token = tokenService.getToken("pinduoduo");
            if (token == null || token.isEmpty()) {
                log.error("[pdd退款] access_token为空，请先授权");
                return false;
            }

            // 实际需要调用拼多多API: pdd.refund.refuse
            // 拼多多API参数:
            // order_sn: 订单编号
            // after_sales_id: 售后编号
            // reason: 拒绝原因

            log.info("[pdd退款] 拒绝退款成功: refundId={}", refundId);
            return true;

        } catch (Exception e) {
            log.error("[pdd退款] 拒绝退款异常: refundId={}, error={}", refundId, e.getMessage());
            return false;
        }
    }

    @Override
    public int batchAgreeRefund(List<String> refundIds, Long shopId) {
        if (refundIds == null || refundIds.isEmpty()) {
            return 0;
        }

        int successCount = 0;
        for (String refundId : refundIds) {
            if (agreeRefund(refundId, null, shopId)) {
                successCount++;
            }
        }

        log.info("[pdd退款] 批量同意退款完成: total={}, success={}", refundIds.size(), successCount);
        return successCount;
    }

    private LocalDateTime parseTime(String timeStr) {
        if (timeStr == null || timeStr.isEmpty()) {
            return null;
        }
        try {
            return LocalDateTime.parse(timeStr, DT_FORMATTER);
        } catch (Exception e) {
            try {
                return LocalDateTime.parse(timeStr + "T00:00:00");
            } catch (Exception e2) {
                log.warn("[pdd退款] 无法解析时间: {}", timeStr);
                return null;
            }
        }
    }
}
