package com.template.controller;


import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.read.listener.PageReadListener;
import com.alibaba.excel.write.metadata.WriteSheet;
import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import com.template.api.ClassScheduleAPI;
import com.template.model.dto.ClassScheduleDto;
import com.template.model.pojo.ClassSchedule;
import com.template.model.result.CommonResult;
import com.template.model.vo.ClassListVo;
import com.template.model.vo.ClassScheduleExportVo;
import com.template.model.vo.ScheduleVo;
import com.template.services.ClassScheduleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.time.format.TextStyle;
import java.time.temporal.ChronoUnit;
import java.util.*;

/**
 * <p>
 * 前端控制器
 * </p>
 *
 * @author ceshi
 * @since 2023-11-06
 */
@RestController
//加密
//@DESRespondSecret
public class ClassScheduleController implements ClassScheduleAPI {

    @Autowired
    ClassScheduleService classScheduleService;

    @Override
    public CommonResult schedule(String stateTime, String endTime, String teacherName) {
        DateTimeFormatter dateTimeFormatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd");

        if (ObjectUtils.isEmpty(stateTime) && ObjectUtils.isEmpty(endTime)) {
//            获取当前星期的周一和周日
            LocalDate date = LocalDate.now();
            String dateStr = date.format(dateTimeFormatter2);
            Map<String, String> map = getDjz(dateStr);
//            获取周几
            String week = map.get("week");

            LocalDate localDate = date.minusDays(Integer.valueOf(week) - 1);
            stateTime = localDate.format(dateTimeFormatter2);
            LocalDate localEnd = localDate.plusDays(6);
            endTime = localEnd.format(dateTimeFormatter2);
        }


        LocalDate date = LocalDate.parse(stateTime, dateTimeFormatter2);
        LocalDate end = LocalDate.parse(endTime, dateTimeFormatter2);

        long until = date.until(end, ChronoUnit.DAYS);

        ArrayList<ScheduleVo> scheduleVos = new ArrayList<>();
        for (int i = 0; i <= until; i++) {
            LocalDate localDate = date.plusDays(i);
            ScheduleVo scheduleVo = new ScheduleVo();
            ClassListVo classListVo = classScheduleService.classList(localDate,teacherName);
            scheduleVo.setClassListVo(classListVo);
            String format = localDate.format(dateTimeFormatter2);
            Map<String, String> stringMap = getDjz(format);
            String week = stringMap.get("week");
            if ("1".equals(week)) {
                scheduleVo.setDateName(format+"/星期一");
            } else if ("2".equals(week)) {
                scheduleVo.setDateName(format+"/星期二");
            } else if ("3".equals(week)) {
                scheduleVo.setDateName(format+"/星期三");
            } else if ("4".equals(week)) {
                scheduleVo.setDateName(format+"/星期四");
            } else if ("5".equals(week)) {
                scheduleVo.setDateName(format+"/星期五");
            } else if ("6".equals(week)) {
                scheduleVo.setDateName(format+"/星期六");
            } else {
                scheduleVo.setDateName(format+"/星期日");
            }
            scheduleVos.add(scheduleVo);
        }


        return CommonResult.ok(scheduleVos);
    }

    @Override
    public void downloadSchedule(String stateTime, String endTime, String teacherName, HttpServletResponse response) {
        DateTimeFormatter dateTimeFormatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd");

        if (ObjectUtils.isEmpty(stateTime) && ObjectUtils.isEmpty(endTime)) {
//            获取当前星期的周一和周日
            LocalDate date = LocalDate.now();
            String dateStr = date.format(dateTimeFormatter2);
            Map<String, String> map = getDjz(dateStr);
//            获取周几
            String week = map.get("week");

            LocalDate localDate = date.minusDays(Integer.valueOf(week) - 1);
            stateTime = localDate.format(dateTimeFormatter2);
            LocalDate localEnd = localDate.plusDays(6);
            endTime = localEnd.format(dateTimeFormatter2);
        }


        LocalDate date = LocalDate.parse(stateTime, dateTimeFormatter2);
        LocalDate end = LocalDate.parse(endTime, dateTimeFormatter2);
        QueryWrapper<ClassSchedule> qw = new QueryWrapper<>();
        qw.between("date_time",stateTime,endTime);
        if(teacherName!=null){
            qw.like("jsxm",teacherName);
        }
        List<ClassSchedule> classSchedulesList= classScheduleService.list(qw);
        List<ClassScheduleExportVo> exportVoList=new ArrayList<>();
        for(ClassSchedule classSchedule:classSchedulesList){
            ClassScheduleExportVo classScheduleExportVo=JSON.parseObject(JSON.toJSONString(classSchedule), ClassScheduleExportVo.class);
            exportVoList.add(classScheduleExportVo);
        }
        //空数据则为模板增加导入提示
        if(exportVoList.size()==0){
            ClassScheduleExportVo classScheduleExportVo=new ClassScheduleExportVo();
            classScheduleExportVo.setJsgh("示例：12004");
            classScheduleExportVo.setRemark("请在编辑导入数据时删除此行");
            classScheduleExportVo.setJc("示例：9-10");
            classScheduleExportVo.setJsxm("示例：张三");
            classScheduleExportVo.setDateTime("示例：2024-06-18");
            classScheduleExportVo.setXq("示例：2");
            classScheduleExportVo.setXn("示例：2023-2024");
            classScheduleExportVo.setZj("示例：星期日");
            classScheduleExportVo.setDjz("示例：15");
            exportVoList.add(classScheduleExportVo);
        }
        ExcelWriter excelWriter = null;
        try {
            response.setContentType("application/octet-stream");
            //设置前端下载文件名
            Date d = new Date();
            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
            String dateNowStr = sdf.format(d);
            String fileName = new String(("课表导出-"+dateNowStr).getBytes("utf-8"),"iso-8859-1");
            response.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls");
//            response.setCharacterEncoding("utf-8");
            // 指定写用哪个class去写
            excelWriter = EasyExcel.write(response.getOutputStream(), ClassScheduleExportVo.class).build();
            // 同一个sheet只要创建一次
            WriteSheet writeSheet = EasyExcel.writerSheet("课表").build();
            // 调用写入
            excelWriter.write(exportVoList, writeSheet);
        } catch (Exception e) {
            System.out.println("导出课表失败"+e.getMessage());
        } finally {
            // 关闭流
            if (excelWriter != null) {
                excelWriter.finish();
            }
        }
    }

    @Override
    public CommonResult uploadSchedule(@RequestParam("file") MultipartFile multipartFile) {
        if (multipartFile.isEmpty()) {
            return  CommonResult.fail("文件不能为空");
        }
        List<ClassSchedule> classSchedulesList=new ArrayList<>();
        // 这里 需要指定读用哪个class去读，然后读取第一个sheet 文件流会自动关闭
        // 这里每次会读取3000条数据 然后返回过来 直接调用使用数据就行
        List<String> list=new ArrayList<>();
        try {
            EasyExcel.read(multipartFile.getInputStream(), ClassScheduleExportVo.class, new PageReadListener<ClassScheduleExportVo>(dataList -> {
                for (ClassScheduleExportVo classScheduleExportVo : dataList) {
                    //将导入的数据用mybatisPlus一个个添加进数据库
                    if(StringUtils.hasText(classScheduleExportVo.getJsgh())&&StringUtils.hasText(classScheduleExportVo.getJsxm())
                    &&StringUtils.hasText(classScheduleExportVo.getDateTime())){
                        ClassSchedule classSchedule=JSON.parseObject(JSON.toJSONString(classScheduleExportVo), ClassSchedule.class);
                        classSchedulesList.add(classSchedule);
                    }else{
                        list.add(classScheduleExportVo.toString()+"姓名，微校卡号，日期必填，请重新导入");
                    }
                }
            })).sheet().doRead();
            if (list.size()==0){
                classScheduleService.saveOrUpdateBatch(classSchedulesList);
            }else{
                return CommonResult.fail("数据格式异常:"+list.toString());
            }
        } catch (IOException e) {
            System.out.println(e);
            return CommonResult.fail("导入异常"+e.getMessage());
        }
        return CommonResult.ok();
    }

    @Override
    public CommonResult deleteSchedule(List<Integer> ids) {
        boolean a =classScheduleService.removeByIds(ids);
        if(!a){
            return CommonResult.fail("删除失败");
        }
        return CommonResult.ok("删除完成");
    }

    @Override
    public CommonResult insertSchedule(ClassScheduleDto scheduleDto) {
        ClassSchedule schedule=new ClassSchedule();
        schedule.setJsxm(scheduleDto.getJsxm());
        schedule.setJsgh(scheduleDto.getJsgh());
        schedule.setDateTime(scheduleDto.getDateTime());
        boolean save = classScheduleService.save(schedule);
        if(!save){
            return CommonResult.fail("新增失败");
        }
        return CommonResult.ok("新增完成");
    }

    //    @Scheduled(cron = "0 44 11 * * ? ")
    public void update() {
//        LocalDate localDate = LocalDate.of(2023, 9, 4);
        LocalDate localDate = LocalDate.of(2024, 2, 26);

        LambdaQueryWrapper<ClassSchedule> wrapper=new LambdaQueryWrapper<>();
        wrapper.eq(ClassSchedule::getXn,"2023-2024")
                .eq(ClassSchedule::getXq,2);
        List<ClassSchedule> list = classScheduleService.list(wrapper);
        DateTimeFormatter dateTimeFormatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd");

        ArrayList<ClassSchedule> classSchedules = new ArrayList<>();
        for (int i = 0; i < list.size(); i++) {
            ClassSchedule classSchedule = list.get(i);
//            获取第几周
            String djz = classSchedule.getDjz();
//            获取周几
            String zj = classSchedule.getZj();
//            需要在开学的基础上加多少天
            Integer integer = Integer.valueOf(djz);
            Integer integer1 = Integer.valueOf(zj);

            int djzDay = (integer - 1) * 7;
            int zjDay = integer1 - 1;

            int day = djzDay + zjDay;
            LocalDate date = localDate.plusDays(day);

            String dateStr = date.format(dateTimeFormatter2);
            classSchedule.setDateTime(dateStr);

            classSchedules.add(classSchedule);
        }

        boolean b = classScheduleService.updateBatchById(classSchedules);
        System.out.println("b = " + b);


    }


    /**
     * 通过一个时间判断是第几周，周几
     *
     * @param dateTime
     * @return
     */
    public Map<String, String> getDjz(String dateTime) {
        //    2023-9-4开始上课
//        LocalDate localDate = LocalDate.of(2023, 9, 4);

        DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        LocalDate date = LocalDate.parse(dateTime, dateTimeFormatter);

//        将此日期与指定日期进行比较,传进来的日期不能小于开学日期
       /* int i = date.compareTo(localDate);
        if (i < 0) {
            return null;
        }*/
        Map<String, String> map = new HashMap<>();
//        计算2个时间的天数差
//        long until = date.until(localDate, ChronoUnit.DAYS);
        //        需要加1才是第几周
//        int weeks = (int) until / 7;
//        map.put("weeks", (weeks + 1) + "");

//        周几
        String chineseDayOfWeek = date.getDayOfWeek().getDisplayName(TextStyle.FULL, Locale.CHINA);
        if ("星期一".equals(chineseDayOfWeek)) {
            map.put("week", 1 + "");
        } else if ("星期二".equals(chineseDayOfWeek)) {
            map.put("week", 2 + "");
        } else if ("星期三".equals(chineseDayOfWeek)) {
            map.put("week", 3 + "");
        } else if ("星期四".equals(chineseDayOfWeek)) {
            map.put("week", 4 + "");
        } else if ("星期五".equals(chineseDayOfWeek)) {
            map.put("week", 5 + "");
        } else if ("星期六".equals(chineseDayOfWeek)) {
            map.put("week", 6 + "");
        } else {
            map.put("week", 7 + "");
        }

//        获取月份
        int month = date.getMonthValue();
        int year = date.getYear();
        // 获取学年、学期
        String schoolYear, semester;
        if (month >= 2 && month <= 7) {
            schoolYear = (year - 1) + "-" + year;
            semester = "2";
        } else {
            schoolYear = year + "-" + (year + 1);
            semester = "1";
        }
        map.put("schoolYear", schoolYear);
        map.put("semester", semester);

        return map;
    }


    public static void main(String[] args) {
        LocalDate date = LocalDate.now();
        String chineseDayOfWeek = date.getDayOfWeek().getDisplayName(TextStyle.FULL, Locale.CHINA);
        String week = "";
        if (chineseDayOfWeek.equals("星期三")) {
            week = "3";
        }
        DateTimeFormatter dateTimeFormatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        LocalDate localDate = date.minusDays(Integer.valueOf(week) - 1);
        String stateTime = localDate.format(dateTimeFormatter2);
        System.out.println("stateTime = " + stateTime);
        LocalDate localEnd = localDate.plusDays(6);
        String endTime = localEnd.format(dateTimeFormatter2);
        System.out.println("endTime = " + endTime);


    }

}