package com.yunhai.bschclassmanage.controller.api;


import com.yunhai.bschclassmanage.config.Config;
import com.yunhai.bschclassmanage.controller.BaseController;
import com.yunhai.bschclassmanage.entity.SchClassTeach;
import com.yunhai.bschclassmanage.model.vo.*;
import com.yunhai.bschclassmanage.service.*;
import com.yunhai.bschclassmanage.utils.UserContext;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.*;


@RestController
@RequestMapping(Config.API_PATH+"/teachs/")
@CrossOrigin(originPatterns = {"*"}, allowCredentials = "true")
public class SchTeachController extends BaseController {

    @Autowired
    private ISchClassTeachService schClassTeachService;  //使用接口

    @Autowired
    private ISchDicSubjectService schDicSubjectService;  //使用接口

    @Autowired
    private ISchClassService schClassService;  //使用接口

    @Autowired
    private ISchTeacherService schTeacherService;  //使用接口

    @GetMapping("search")
    public SchTeachMapVO getSchTeachMapVO(@RequestParam(required = true) Integer schsystemId,
                                          @RequestParam(required = false) Integer gradeId) {
        return schClassTeachService.getSchTeachMapVO(UserContext.getSchId(),schsystemId,gradeId);
    }

    @GetMapping("getSchClassTeach")
    public  List<SchTeachMapIdVO>  getSchClassTeachMapVO(@RequestParam Integer gradeId,@RequestParam Integer classId) {
        return schClassTeachService.getSchClassTeachMapVO(UserContext.getSchId(),gradeId,classId);
    }

    @PostMapping("save")
    public void saveTeach(@Valid @RequestBody SchClassTeach model) {
        schClassTeachService.saveTeach(UserContext.getCurrentUser(),model);
    }

    @PostMapping("delete/{id}")
    public void delTeachById(@PathVariable Integer id) {
        schClassTeachService.delTeachById(UserContext.getCurrentUser(),id);
    }

    @PostMapping("delClassTeach")
    public void delClassTeach(@RequestParam Integer classId) {
        schClassTeachService.delClassTeach(UserContext.getCurrentUser(),classId);
    }

    @PostMapping("delBatch")
    public void delBatch(@RequestParam Integer schsystemId, @RequestParam(required = false) Integer gradeId) {
        schClassTeachService.delBatch(UserContext.getCurrentUser(),schsystemId,gradeId);
    }




    @GetMapping("downloadTemplate")
    public void downloadTemplate(HttpServletResponse response,@RequestParam Integer schId,@RequestParam Integer schsystemId, @RequestParam(required = false) Integer gradeId) throws IOException {

        // 2. 获取科目和班级
        List<SelectStrVO> subList = schDicSubjectService.select(schId, schsystemId);
        if (subList == null) subList = Collections.emptyList();
        List<BaseSchClassVO> schClassList = schClassService.searcBaseSchClass(schId, schsystemId, gradeId,null);
        if (schClassList == null) schClassList = Collections.emptyList();

        // 3. 创建工作簿
        Workbook workbook = new HSSFWorkbook(); // 或 XSSFWorkbook
        Sheet sheet = workbook.createSheet("教师任教导入");

        // 4. 构建表头
        Row headerRow = sheet.createRow(0);
        int colIdx = 0;
        headerRow.createCell(colIdx++).setCellValue("年级");
        headerRow.createCell(colIdx++).setCellValue("班级");
        for (SelectStrVO sub : subList) {
            headerRow.createCell(colIdx++).setCellValue(sub.getName());
        }

        // 5. 填充数据行
        int rowIdx = 1;
        for (BaseSchClassVO clzz : schClassList) {
            Row row = sheet.createRow(rowIdx++);
            colIdx = 0;
            row.createCell(colIdx++).setCellValue(clzz.getGradeName());
            row.createCell(colIdx++).setCellValue(clzz.getName());
            for (int i = 0; i < subList.size(); i++) {
                row.createCell(colIdx++).setCellValue("");
            }
        }

        // 6. 自动调整列宽（可选）
        for (int i = 0; i < 2 + subList.size(); i++) {
            sheet.autoSizeColumn(i);
        }

        // 7. 下载
        String fileName = "教师任教导入模板.xls";
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
        workbook.write(response.getOutputStream());
        workbook.close();
    }

    @GetMapping("export")
    public void export(HttpServletResponse response,@RequestParam Integer schId,@RequestParam Integer schsystemId, @RequestParam(required = false) Integer gradeId) throws IOException {

        // 2. 获取科目和班级
        List<SelectStrVO> subList = schDicSubjectService.select(schId, schsystemId);
        if (subList == null) subList = Collections.emptyList();
        List<BaseSchClassVO> schClassList = schClassService.searcBaseSchClass(schId, schsystemId, gradeId,null);
        if (schClassList == null) schClassList = Collections.emptyList();
        Map<Integer,String> schTeacherMap=schTeacherService.toIdAndNameMap(schId);
        List<SchClassTeach> schClassTeachList=schClassTeachService.getSchClassTeachCacheList(schId,gradeId,null);

        // 3. 创建工作簿
        Workbook workbook = new HSSFWorkbook(); // 或 XSSFWorkbook
        Sheet sheet = workbook.createSheet("教师任教导出");

        // 4. 构建表头
        Row headerRow = sheet.createRow(0);
        int colIdx = 0;
        headerRow.createCell(colIdx++).setCellValue("年级");
        headerRow.createCell(colIdx++).setCellValue("班级");
        for (SelectStrVO sub : subList) {
            headerRow.createCell(colIdx++).setCellValue(sub.getName());
        }

        // 5. 填充数据行
        int rowIdx = 1;
        for (BaseSchClassVO clzz : schClassList) {
            Row row = sheet.createRow(rowIdx++);
            colIdx = 0;
            row.createCell(colIdx++).setCellValue(clzz.getGradeName());
            row.createCell(colIdx++).setCellValue(clzz.getName());
            for (SelectStrVO sub:subList) {
                Optional<SchClassTeach> classTeachOpt=  schClassTeachList.stream().filter(s->s.getClassId().equals(clzz.getClassId())&&s.getSubId().equals(sub.getId())).findFirst();
                row.createCell(colIdx++).setCellValue(classTeachOpt.isPresent()?schTeacherMap.get(classTeachOpt.get().getTeaId()):"");
            }
        }

        // 6. 自动调整列宽（可选）
        for (int i = 0; i < 2 + subList.size(); i++) {
            sheet.autoSizeColumn(i);
        }

        // 7. 下载
        String fileName = "教师任教导出.xls";
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
        workbook.write(response.getOutputStream());
        workbook.close();
    }

    @PostMapping("importTeach")
    public void importTeach(@RequestPart("file") MultipartFile file,@RequestParam Integer schsystemId, @RequestParam(required = false) Integer gradeId) {
        schClassTeachService.importTeach(UserContext.getCurrentUser(),file,schsystemId,gradeId);
    }

}