package com.ruoyi.energy.service.impl;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.energy.dto.EnergyConsumptionDetailDto;
import com.ruoyi.energy.dto.EnergyConsumptionTypeDto;
import com.ruoyi.energy.dto.EnergyCostDto;
import com.ruoyi.energy.dto.EnergyStatisticsDto;
import com.ruoyi.energy.mapper.EnergyMapper;
import com.ruoyi.energy.pojo.Energy;
import com.ruoyi.energy.pojo.EnergyConsumptionDetail;
import com.ruoyi.energy.mapper.EnergyConsumptionDetailMapper;
import com.ruoyi.energy.service.EnergyConsumptionDetailService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.energy.vo.EnergyStatisticsVo;
import com.ruoyi.framework.web.domain.R;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.time.LocalDate;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * <p>
 * 能源类型-能耗抄表明细 服务实现类
 * </p>
 *
 * @author 芯导软件（江苏）有限公司
 * @since 2026-03-10 11:22:20
 */
@Service
public class EnergyConsumptionDetailServiceImpl extends ServiceImpl<EnergyConsumptionDetailMapper, EnergyConsumptionDetail> implements EnergyConsumptionDetailService {

    @Autowired
    private EnergyConsumptionDetailMapper energyConsumptionDetailMapper;

    @Autowired
    private EnergyMapper energyMapper;

    @Override
    public IPage<EnergyConsumptionDetailDto> pageEnergyConsumptionDetail(Page<EnergyConsumptionDetailDto> page, EnergyConsumptionDetailDto energyConsumptionDetailDto) {
        return energyConsumptionDetailMapper.pageEnergyConsumptionDetail(page,energyConsumptionDetailDto);
    }

    @Override
    public R importData(MultipartFile file) {
        try {
            ExcelUtil<EnergyConsumptionDetailDto> util = new ExcelUtil<EnergyConsumptionDetailDto>(EnergyConsumptionDetailDto.class);
            List<EnergyConsumptionDetailDto> energyConsumptionDetailDtoList = util.importExcel(file.getInputStream());
            if(CollectionUtils.isEmpty(energyConsumptionDetailDtoList)){
                return R.fail("模板错误或导入数据为空");
            }
            List<EnergyConsumptionDetail> list = energyConsumptionDetailDtoList.stream().map(energyConsumptionDetailDto -> {
                if (ObjectUtils.isEmpty(energyConsumptionDetailDto)) {
                    throw new RuntimeException("使用模板进行导入");
                }
                if (ObjectUtils.isEmpty(energyConsumptionDetailDto.getEnergyTyep()) && ObjectUtils.isEmpty(energyConsumptionDetailDto.getEnergyName())) {
                    throw new RuntimeException("能源类型不能为空");
                }
                List<Energy> energy = energyMapper.selectList(Wrappers.<Energy>lambdaQuery()
                        .eq(Energy::getEnergyTyep, energyConsumptionDetailDto.getEnergyTyep())
                        .eq(Energy::getEnergyName, energyConsumptionDetailDto.getEnergyName()));
                if (CollectionUtils.isEmpty(energy)) {
                    throw new RuntimeException("导入数据中的能源类型在系统中不存在,请先前往能源类型中配置!");
                }
                EnergyConsumptionDetail energyConsumptionDetail = new EnergyConsumptionDetail();
                BeanUtils.copyProperties(energyConsumptionDetailDto, energyConsumptionDetail);
                energyConsumptionDetail.setEnergyId(energy.get(0).getId());
                return energyConsumptionDetail;
            }).collect(Collectors.toList());
            this.saveOrUpdateBatch(list);
            return R.ok(true);
        }catch (Exception e){
            e.printStackTrace();
            return R.fail(e.getMessage());
        }
    }

    @Override
    public void export(HttpServletResponse response) {
        List<EnergyConsumptionDetailDto> list = energyConsumptionDetailMapper.pageEnergyConsumptionDetail(new Page<>(-1,-1),new EnergyConsumptionDetailDto()).getRecords();
        if(CollectionUtils.isEmpty(list)){
            throw new RuntimeException("无导出数据");
        }
        ExcelUtil<EnergyConsumptionDetailDto> util = new ExcelUtil<>(EnergyConsumptionDetailDto.class);
        util.exportExcel(response, list, "能耗抄表");
    }

    @Override
    public EnergyStatisticsDto statistics(EnergyStatisticsVo energyStatisticsVo) {
        EnergyStatisticsDto energyStatisticsDto = new EnergyStatisticsDto();
        //计算总耗用量+总能耗费用
        Map<String, BigDecimal> map=energyConsumptionDetailMapper.calculateEnergy(energyStatisticsVo);
        energyStatisticsDto.setTotalEnergyConsumption(map.get("totalEnergyConsumption"));
        energyStatisticsDto.setTotalEnergyCost(map.get("totalEnergyCost"));
        //平均用量
        energyStatisticsDto.setAverageConsumption(energyStatisticsDto.getTotalEnergyConsumption().divide(new BigDecimal(energyStatisticsVo.getDays()),2, RoundingMode.HALF_UP));
        //环比变化=(本期值 - 上期值) / 上期值 * 100
        LocalDate minDays = energyStatisticsVo.getStartDate().minusDays(energyStatisticsVo.getDays());
        LocalDate masDays = energyStatisticsVo.getEndDate().minusDays(energyStatisticsVo.getDays());
        EnergyStatisticsVo oldenergyStatisticsVo = new EnergyStatisticsVo();
        BeanUtils.copyProperties(energyStatisticsVo,oldenergyStatisticsVo);
        oldenergyStatisticsVo.setStartDate(minDays);
        oldenergyStatisticsVo.setEndDate(masDays);
        Map<String, BigDecimal> oldmap=energyConsumptionDetailMapper.calculateEnergy(oldenergyStatisticsVo);
        if (ObjectUtils.isNotEmpty(oldmap)) {
            BigDecimal changeVite = (map.get("totalEnergyConsumption").subtract(oldmap.get("totalEnergyConsumption"))).divide(oldmap.get("totalEnergyConsumption"), 4, RoundingMode.HALF_UP).multiply(new BigDecimal(100));
            energyStatisticsDto.setChangeVite(changeVite);
        }
        //能耗类型占比
        List<EnergyConsumptionTypeDto> energyConsumptionTypeDtos=energyConsumptionDetailMapper.energyConsumptionTypeProportion(energyStatisticsVo);
        energyStatisticsDto.setEnergyConsumptionTypeProportion(energyConsumptionTypeDtos);
        //能耗明细
        List<EnergyCostDto> energyCostDtos=energyConsumptionDetailMapper.energyCostDtos(energyStatisticsVo);
        energyStatisticsDto.setEnergyCostDtos(energyCostDtos);
        return energyStatisticsDto;
    }
}