package com.ruoyi.lavorissue.service.impl;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.write.metadata.WriteSheet;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.approve.utils.StartAndEndDateDto;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.excel.ConfigurableMergeStrategy;
import com.ruoyi.common.utils.excel.CustomCellStyleHandler;
import com.ruoyi.lavorissue.dto.StatisticsLaborIssue;
import com.ruoyi.lavorissue.mapper.LavorIssueMapper;
import com.ruoyi.lavorissue.pojo.LaborIssue;
import com.ruoyi.lavorissue.service.LavorIssueService;
import com.ruoyi.project.system.domain.SysDept;
import com.ruoyi.project.system.domain.SysDictData;
import com.ruoyi.project.system.mapper.SysDeptMapper;
import com.ruoyi.project.system.mapper.SysDictDataMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.util.CellRangeAddress;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @author :yys
 * @date : 2025/8/13 11:18
 */
@Service
@Slf4j
public class LavorIssueServiceImpl extends ServiceImpl<LavorIssueMapper, LaborIssue> implements LavorIssueService {

    @Autowired
    private LavorIssueMapper lavorIssueMapper;

    @Override
    public IPage<LaborIssue> listPage(Page page, LaborIssue laborIssue) {
        StartAndEndDateDto startAndEndDateDto = getStartAndEndDateDto(laborIssue.getSeason(), laborIssue.getIssueDate());
        laborIssue.setStartDate(startAndEndDateDto.getStartDate());
        laborIssue.setEndDate(startAndEndDateDto.getEndDate());
        IPage<LaborIssue> laborIssueIPage = lavorIssueMapper.listPage(page, laborIssue);
        return laborIssueIPage;
    }

    public StartAndEndDateDto getStartAndEndDateDto(Integer season,Date payDate){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        StartAndEndDateDto startAndEndDateDto = new StartAndEndDateDto();
        if(season != null){
            Calendar calendar = Calendar.getInstance();
            int currentYear = calendar.get(Calendar.YEAR);
            startAndEndDateDto.setYear(currentYear);
            switch (season){
                case 1:
                    startAndEndDateDto.setStartDate(currentYear + "-01-01");
                    startAndEndDateDto.setEndDate(currentYear + "-03-31");
                    startAndEndDateDto.setStartMonth(1);
                    startAndEndDateDto.setEndMonth(3);
                    break;
                case 2:
                    startAndEndDateDto.setStartDate(currentYear + "-04-01");
                    startAndEndDateDto.setEndDate(currentYear + "-06-30");
                    startAndEndDateDto.setStartMonth(4);
                    startAndEndDateDto.setEndMonth(6);
                    break;
                case 3:
                    startAndEndDateDto.setStartDate(currentYear + "-07-01");
                    startAndEndDateDto.setEndDate(currentYear + "-09-30");
                    startAndEndDateDto.setStartMonth(7);
                    startAndEndDateDto.setEndMonth(9);
                    break;
                case 4:
                    startAndEndDateDto.setStartDate(currentYear + "-10-01");
                    startAndEndDateDto.setEndDate(currentYear + "-12-31");
                    startAndEndDateDto.setStartMonth(10);
                    startAndEndDateDto.setEndMonth(12);
                    break;
            }
        }
        if(payDate != null){
            Date lastDayOfMonth = getLastDayOfMonth(payDate);
            startAndEndDateDto.setStartDate(sdf.format(payDate));
            startAndEndDateDto.setEndDate(sdf.format(lastDayOfMonth));
        }
        return startAndEndDateDto;
    }

    @Override
    public StatisticsLaborIssue statistics(StatisticsLaborIssue req) throws Exception{
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        StatisticsLaborIssue statisticsLaborIssue = new StatisticsLaborIssue();
        StartAndEndDateDto startAndEndDateDto = getStartAndEndDateDto(req.getSeason(), req.getIssueDate());
        LambdaQueryWrapper<LaborIssue> laborIssueLambdaQueryWrapper = new LambdaQueryWrapper<>();
        if(req.getSeason() != null || req.getIssueDate() != null){
            laborIssueLambdaQueryWrapper.ge(LaborIssue::getIssueDate, startAndEndDateDto.getStartDate())
                    .le(LaborIssue::getIssueDate, startAndEndDateDto.getEndDate());
        }
        List<LaborIssue> laborIssues = lavorIssueMapper.selectList(laborIssueLambdaQueryWrapper);
        if(!CollectionUtils.isEmpty(laborIssues)){
            Long sum = laborIssues.stream()
                    .filter(laborIssue -> laborIssue.getAdoptedDate() != null)
                    .mapToLong(LaborIssue::getNum)
                    .sum();
            statisticsLaborIssue.setYlqNum(sum);
            statisticsLaborIssue.setWlqNum(laborIssues.stream()
                    .filter(laborIssue -> laborIssue.getAdoptedDate() == null)
                    .mapToLong(LaborIssue::getNum)
                    .sum());
            Date currentDate = new Date();
            Date parse = sdf.parse(sdf.format(currentDate));
            statisticsLaborIssue.setCsylqNum(laborIssues.stream()
                    .filter(laborIssue -> laborIssue.getIssueDate() != null
                            && laborIssue.getAdoptedDate() != null
                            && (laborIssue.getIssueDate().before(laborIssue.getAdoptedDate())))
                    .mapToLong(LaborIssue::getNum)
                    .sum());
            statisticsLaborIssue.setCswlqNum(laborIssues.stream()
                    .filter(laborIssue -> laborIssue.getIssueDate() != null
                            && laborIssue.getIssueDate().before(parse)
                            && laborIssue.getAdoptedDate() == null)
                    .mapToLong(LaborIssue::getNum)
                    .sum());
        }
        return statisticsLaborIssue;
    }

    @Autowired
    private SysDictDataMapper sysDictDataMapper;

    @Override
    public void exportCopy(HttpServletResponse response, LaborIssue laborIssue) throws UnsupportedEncodingException {
        List<SysDictData> sys_lavor_issue = sysDictDataMapper.selectDictDataByType("sys_lavor_issue");
        if(CollectionUtils.isEmpty(sys_lavor_issue)){
            throw new RuntimeException("字典数据为空");
        }
        StartAndEndDateDto startAndEndDateDto = getStartAndEndDateDto(laborIssue.getSeason(), laborIssue.getIssueDate());
        BeanUtils.copyProperties(startAndEndDateDto, laborIssue);
        List<LaborIssue> laborIssues = lavorIssueMapper.list(laborIssue);
        if (CollectionUtils.isEmpty(laborIssues)) {
            throw new RuntimeException("数据为空");
        }
        Map<String, List<LaborIssue>> laborIssueMap = laborIssues.stream()
                .collect(Collectors.groupingBy(LaborIssue::getStaffNo));
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("UTF-8");
        // 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
        String fileName = URLEncoder.encode("劳保台账", "UTF-8");
        response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");

        try {
            //新建ExcelWriter
            ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream())
                    .registerWriteHandler(new CustomCellStyleHandler())
                    .registerWriteHandler(new ConfigurableMergeStrategy(exportExternalPackingListGetMerge(4,sys_lavor_issue.size(),laborIssueMap.size())))
                    .build();

            List<List<List<String>>> data = completeExternalPackingList(laborIssueMap, sys_lavor_issue,laborIssue);

            for (int i = 0; i < data.size(); i++) {
                List<List<String>> list = data.get(i);

                //获取sheet0对象
                WriteSheet mainSheet = EasyExcel.writerSheet(i, "外部装箱单" + i).build();
                //向sheet0写入数据 传入空list这样只导出表头
                excelWriter.write(list, mainSheet);
            }

            //关闭流
            excelWriter.finish();
        } catch (IOException e) {
            throw new RuntimeException("导出失败");
        }
    }

    @Autowired
    private SysDeptMapper sysDeptMapper;


//     处理外部装箱单数据
    private List<List<List<String>>> completeExternalPackingList(Map<String, List<LaborIssue>> listMap,List<SysDictData> sys_lavor_issue,LaborIssue obj) {
        List<List<List<String>>> data = new ArrayList<>();
        int num = sys_lavor_issue.size();

        List<List<String>> item = new ArrayList<>();
        List<String> list = new ArrayList<>();
        list.add("部门");
        list.add("");
        list.add("企业管理科");
        list.add("");
        list.add("企业管理科" + obj.getYear() + "年" + obj.getStartMonth() + "月-" + obj.getYear() + "年" + obj.getEndMonth() +"月劳保发放计划表");
        for (int i = 1; i <= num; i++){
            list.add("");
        }
        item.add(list);

        List<String> list1 = new ArrayList<>();
        list1.add("开始年/月");
        list1.add("");
        list1.add("结束年/月");
        list1.add("");
        for (int i = 0; i <= num; i++){
            list1.add("");
        }
        item.add(list1);

        List<String> list2 = new ArrayList<>();
        list2.add(obj.getYear().toString());
        list2.add(obj.getStartMonth().toString());
        list2.add(obj.getYear().toString());
        list2.add(obj.getEndMonth().toString());
        for (int i = 0; i <= num; i++){
            list.add("");
        }
        item.add(list2);

        List<String> list3 = new ArrayList<>();
        list3.add("部门名称");
        list3.add("");
        list3.add("姓名");
        list3.add("工号");
        for (SysDictData sysDictData : sys_lavor_issue) {
            list3.add(sysDictData.getDictLabel());
        }
        list3.add("签名");
        item.add(list3);

        // 填值
        SysDept sysDept = sysDeptMapper.selectDeptById(SecurityUtils.getLoginUser().getTenantId());
        List<String> sumList = new ArrayList<>();
        AtomicInteger i = new AtomicInteger();
        listMap.forEach((key, value) -> {
            List<String> list4 = new ArrayList<>();
            list4.add(sysDept.getDeptName());
            list4.add("");
            list4.add(value.get(0).getStaffName());
            list4.add(value.get(0).getStaffNo());
            int j = 0;
            for (SysDictData sysDictData : sys_lavor_issue) {
                list4.add(value.stream().filter(laborIssue -> laborIssue.getDictId().equals(sysDictData.getDictValue()))
                        .mapToLong(LaborIssue::getNum)
                        .sum()
                        + "");
                if(i.get() == 0){
                    sumList.add(value.stream().filter(laborIssue -> laborIssue.getDictId().equals(sysDictData.getDictValue()))
                            .mapToLong(LaborIssue::getNum)
                            .sum()
                            + "");
                }else {
                    sumList.set(j,(Long.parseLong(sumList.get(j)) + value.stream().filter(laborIssue -> laborIssue.getDictId().equals(sysDictData.getDictValue()))
                            .mapToLong(LaborIssue::getNum)
                            .sum())
                            + "");
                }
                j++;
            }
            i.getAndIncrement();
            item.add(list4);
        });
        List<String> list5 = new ArrayList<>();
        list5.add("合计");
        list5.add("");
        list5.add("");
        list5.add("");
        for (int h = 0; h < sumList.size(); h++){
            list5.add(sumList.get(h));
        }
        item.add(list5);
        data.add(item);
        return data;
    }

    /**
     * 外部装箱单合并单元格
     *
     * @return
     */
    private List<CellRangeAddress> exportExternalPackingListGetMerge(Integer rowNum,Integer num,Integer listSize) {
        List<CellRangeAddress> mergeRegions = new ArrayList<>();
        mergeRegions.add(new CellRangeAddress(0, 0, 0, 1)); // 合并A1:Q2
        mergeRegions.add(new CellRangeAddress(0, 0, 2, 3)); // 合并A4:Q4

        mergeRegions.add(new CellRangeAddress(0, 2, rowNum, rowNum + num)); // 合并A5:B6
        mergeRegions.add(new CellRangeAddress(1, 1, 0, 1)); // 合并C5:E6
        mergeRegions.add(new CellRangeAddress(1, 1, 2, 3)); // 合并F5:G6
        mergeRegions.add(new CellRangeAddress(3, 3, 0, 1)); // 合并H5:I6
        for (int i = 1; i <= listSize; i++) {
            mergeRegions.add(new CellRangeAddress(3 + i, 3 + i, 0, 1));
        }
        mergeRegions.add(new CellRangeAddress(rowNum + listSize, rowNum + listSize, 0, 3));
        return mergeRegions;
    }

    public Date getLastDayOfMonth(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date); // 设置传入的Date
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH)); // 设置为当月最后一天
        return calendar.getTime(); // 返回Date对象
    }
}