package com.xiaopeng.order.service.impl;

import com.xiaopeng.api.dto.statistics.DailyCountDTO;
import com.xiaopeng.api.dto.statistics.OrderStatisticsDTO;
import com.xiaopeng.api.dto.statistics.StatisticsQueryDTO;
import com.xiaopeng.api.model.order.XpOrder;
import com.xiaopeng.order.mapper.XpOrderMapper;
import com.xiaopeng.order.service.IXpOrderService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDate;
import java.util.ArrayList;
import java.util.List;

/**
 * <p>
 * 订单 服务实现类
 * </p>
 *
 * @author mitao
 * @since 2026-02-03
 */
@Service
public class XpOrderServiceImpl extends ServiceImpl<XpOrderMapper, XpOrder> implements IXpOrderService {

    @Override
    public OrderStatisticsDTO getOrderStatistics(StatisticsQueryDTO query) {
        OrderStatisticsDTO dto = new OrderStatisticsDTO();

        // 1. 查询订单总数（状态为9=待评价或10=已完成）
        dto.setTotalCount(baseMapper.countCompletedOrders());

        // 2. 查询时间范围内新增订单数
        if (query.getStartDate() != null && query.getEndDate() != null) {
            dto.setNewCount(baseMapper.countNewOrders(query.getStartDate(), query.getEndDate()));
        } else {
            dto.setNewCount(0L);
        }

        // 3. 查询总交易金额和总收入（pay_money累加）
        BigDecimal totalMoney = baseMapper.sumTotalMoney();
        dto.setTotalMoney(totalMoney != null ? totalMoney : BigDecimal.ZERO);
        dto.setTotalIncome(totalMoney != null ? totalMoney : BigDecimal.ZERO);

        // 4. 查询近N天每日新增订单数（默认30天）
        Integer trendDays = query.getTrendDays() != null ? query.getTrendDays() : 30;
        LocalDate endDate = LocalDate.now();
        LocalDate startDate = endDate.minusDays(trendDays - 1);
        List<DailyCountDTO> dailyCountList = baseMapper.getDailyOrderCount(startDate, endDate);
        dto.setDailyCountList(dailyCountList != null ? dailyCountList : new ArrayList<>());

        return dto;
    }
}