package com.mzl.flower.service.statistics;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.mzl.flower.config.exception.ValidationException;
import com.mzl.flower.constant.Constants;
import com.mzl.flower.dto.request.flower.FlowerQueryDTO;
import com.mzl.flower.dto.request.payment.OrderItemSalesQueryDTO;
import com.mzl.flower.dto.request.payment.OrderQueryDTO;
import com.mzl.flower.dto.response.flower.FlowerListDTO;
import com.mzl.flower.dto.response.statistics.FlowerStatisticsDTO;
import com.mzl.flower.dto.response.statistics.SaleStatisticsDTO;
import com.mzl.flower.entity.payment.Order;
import com.mzl.flower.entity.supplier.Supplier;
import com.mzl.flower.mapper.flower.FlowerMapper;
import com.mzl.flower.mapper.payment.*;
import com.mzl.flower.mapper.supplier.SupplierMapper;
import com.mzl.flower.service.BaseService;
import io.micrometer.core.instrument.util.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

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

@Slf4j
@Service
@Transactional
public class StatisticsService extends BaseService {

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderItemMapper orderItemMapper;

    @Autowired
    private FlowerMapper flowerMapper;

    @Autowired
    private SupplierMapper supplierMapper;

    @Autowired
    private OrderItemSalesMapper orderItemSalesMapper;

    public SaleStatisticsDTO getSaleStatistics(String date){
        if(StringUtils.isEmpty(date)){
            throw new ValidationException("日期不能为空");
        }
        LocalDate localDate = parseLocalDate(date);
        if(localDate == null){
            throw new ValidationException("日期无效");
        }

        LocalDateTime end = localDate.atTime(17, 0, 0);
        LocalDateTime begin = end.plusDays(-1);

        SaleStatisticsDTO dto = new SaleStatisticsDTO();
        BigDecimal a = orderMapper.getOrderSaleAmount(begin, end);
        Integer c = orderItemMapper.getFlowerSaleNum(begin, end);

        dto.setSaleAmount(a);
        dto.setSaleFlowerCount(c);

        return dto;
    }

    public FlowerStatisticsDTO getFlowerStatistics(){
        FlowerStatisticsDTO dto = new FlowerStatisticsDTO();

        Page page = new Page(1, 1);
        FlowerQueryDTO q = new FlowerQueryDTO();
        List<String> statusList = new ArrayList<>();
        statusList.add(Constants.FLOWER_STATUS.PENDING.name());
        statusList.add(Constants.FLOWER_STATUS.UP.name());
        statusList.add(Constants.FLOWER_STATUS.OFF.name());
        statusList.add(Constants.FLOWER_STATUS.FORCE_OFF.name());
        q.setStatusList(statusList);
        flowerMapper.selectFlowerList(page, q);
        dto.setFlowerCount((int)page.getTotal());

        Integer sc = supplierMapper.selectCount(new QueryWrapper<Supplier>()
                .eq("is_enabled", 1)
                .eq("status", "P")
                .eq("deleted", 0));
        dto.setSupplierCount(sc);

        Integer oc = orderMapper.selectCount(new QueryWrapper<Order>()
                .eq("deleted", 0)
                .isNotNull("payment_time")
                .isNull("cancel_time")
                .isNull("refund_time"));
        dto.setOrderCount(oc);

        page = new Page(1, 1);
        OrderQueryDTO oq = new OrderQueryDTO();
        oq.setStatusBackend(Constants.ORDER_STATUS_BACKEND.SEND.name());
        orderMapper.selectOrderList(page, oq);
        dto.setOrderSendCount((int)page.getTotal());

        page = new Page(1, 1);
        q = new FlowerQueryDTO();
        statusList = new ArrayList<>();
        statusList.add(Constants.FLOWER_STATUS.UP.name());
        q.setStatusList(statusList);
        flowerMapper.selectFlowerList(page, q);
        dto.setFlowerUpCount((int)page.getTotal());

        page = new Page(1, 1);
        q = new FlowerQueryDTO();
        statusList = new ArrayList<>();
        statusList.add(Constants.FLOWER_STATUS.PENDING.name());
        q.setStatusList(statusList);
        flowerMapper.selectFlowerList(page, q);
        dto.setFlowerPendingCount((int)page.getTotal());

        page = new Page(1, 1);
        OrderItemSalesQueryDTO sq = new OrderItemSalesQueryDTO();
        sq.setStatus(Constants.ORDER_SALES_STATUS.PENDING.name());
        orderItemSalesMapper.selectItemSalesList(page, sq);
        dto.setOrderSalesCount((int)page.getTotal());

        return dto;
    }
}