package com.template.controller;


import com.template.api.WelcomePaySettingControllerAPI;
import com.template.common.utils.CardUtils;
import com.template.common.utils.ExcelUtils;
import com.template.common.utils.paramUtils;
import com.template.model.enumModel.eFileType;
import com.template.model.enumModel.eSchool;
import com.template.model.pojo.*;
import com.template.model.request.insertPaySettingRequest;
import com.template.model.request.updatePaySettingRequest;
import com.template.model.result.CommonResult;
import com.template.model.result.PageUtils;
import com.template.model.vo.StudentPageVo;
import com.template.services.WelcomeOrgService;
import com.template.services.WelcomePaySettingService;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;

import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;

/**
 * <p>
 * 前端控制器
 * </p>
 *
 * @author ceshi
 * @since 2025-06-13
 */
@RestController
public class WelcomePaySettingController implements WelcomePaySettingControllerAPI {

    @Autowired
    private WelcomeOrgService welcomeOrgService;
    @Autowired
    private WelcomePaySettingService welcomePaySettingService;

    @Override
    public CommonResult getPageDatas(int currentPage, int pageCount, Integer collegeId, Integer majorId, String eduLevel) {
        PageUtils<WelcomePaySetting> pages = welcomePaySettingService.queryPageWelcomePaySettings(currentPage, pageCount, collegeId, majorId, eduLevel);
        return CommonResult.ok(pages);
    }

    @Override
    public CommonResult insertPaySetting(insertPaySettingRequest psr, BindingResult bindingResult) {
        if (bindingResult.hasErrors()) {
            String st = paramUtils.getParamError(bindingResult);
            return CommonResult.fail(st);
        }

        WelcomePaySetting exist = welcomePaySettingService.queryPaySettingById(psr.getCollegeId(), psr.getMajorId(), psr.getEduLevel());
        if (exist != null) {
            return CommonResult.fail("当前院系专业已设置！");
        }

        WelcomePaySetting wps = new WelcomePaySetting();
        wps.setCollegeId(psr.getCollegeId());
        wps.setCollegeName(psr.getCollegeName());
        wps.setMajorId(psr.getMajorId());
        wps.setMajorName(psr.getMajorName());
        wps.setEduLevel(psr.getEduLevel());
        wps.setEduSystem(psr.getEduSystem());
        wps.setPayAmount(psr.getPayAmount());

        int result = welcomePaySettingService.insertWelcomePaySetting(wps);
        return result > 0 ? CommonResult.ok("添加成功！") : CommonResult.fail("添加失败！");
    }

    @Override
    public CommonResult updatePaySetting(updatePaySettingRequest psr, BindingResult bindingResult) {
        if (bindingResult.hasErrors()) {
            String st = paramUtils.getParamError(bindingResult);
            return CommonResult.fail(st);
        }

        WelcomePaySetting oldData = welcomePaySettingService.getManageById(psr.getId());
        if (oldData == null) {
            return CommonResult.fail("当前数据已失效，编辑失败！");
        }

        WelcomePaySetting exist = welcomePaySettingService.queryPaySettingById(psr.getCollegeId(), psr.getMajorId(), psr.getEduLevel());
        if (exist != null && psr.getId().intValue() != exist.getId().intValue()) {
            return CommonResult.fail("当前院系专业已设置！");
        }

        oldData.setCollegeId(psr.getCollegeId());
        oldData.setCollegeName(psr.getCollegeName());
        oldData.setMajorId(psr.getMajorId());
        oldData.setMajorName(psr.getMajorName());
        oldData.setEduLevel(psr.getEduLevel());
        oldData.setEduSystem(psr.getEduSystem());
        oldData.setPayAmount(psr.getPayAmount());

        int result = welcomePaySettingService.updateWelcomePaySetting(oldData);
        return result > 0 ? CommonResult.ok("编辑成功！") : CommonResult.fail("编辑失败！");
    }

    @Override
    public CommonResult deleteDormitory(Integer id) {
        int result = welcomePaySettingService.deleteWelcomePaySettingById(id);
        return result < 0 ? CommonResult.fail("删除失败") : CommonResult.ok("删除成功");
    }

    @Override
    public CommonResult importPaySettingExcel(MultipartFile file) throws IOException, ParseException {
        if (file.isEmpty() || file.getSize() == 0) {
            return CommonResult.fail("导入文件不能为空");
        }
        String ContentType = file.getContentType();
        InputStream inputStream = file.getInputStream();
        List<WelcomePaySetting> result = new ArrayList<>();

        //xls格式文件
        if (ContentType.equals(eFileType.Xls.getValue())) {

            CommonResult<List<WelcomePaySetting>> resultData = readXls(inputStream);
            if (!resultData.isSuccess()) {
                return resultData;
            }
            result = resultData.getData();

        } else if (ContentType.equals(eFileType.Xlsx.getValue())) {
            CommonResult<List<WelcomePaySetting>> resultData = readXlsx(inputStream);
            if (!resultData.isSuccess()) {
                return resultData;
            }
            result = resultData.getData();

        } else {
            return CommonResult.fail("缴费设置数据导入只支持Xls或Xlsx格式文件");
        }

        List<WelcomePaySetting> existPays = welcomePaySettingService.queryPaySettings();
        if (existPays != null && existPays.size() > 0) {
            for (WelcomePaySetting wps : result) {
                Optional<WelcomePaySetting> ows = existPays.stream().filter(e -> e.getCollegeId().intValue() == wps.getCollegeId().intValue()
                && e.getMajorId().intValue() == wps.getMajorId().intValue() && e.getEduLevel().equals(wps.getEduLevel())).findFirst();
                if (ows != null && ows.isPresent()) {
                    wps.setId(ows.get().getId());
                }
            }
        }

        boolean resultBool = welcomePaySettingService.saveOrUpdateBatch(result);

        System.out.println("导入缴费设置1");
        return resultBool ? CommonResult.ok("导入成功") : CommonResult.fail("导入失败");
    }

    /**
     * xls文件读取方法
     *
     * @param inputStream
     * @return
     * @throws IOException
     * @throws ParseException
     */
    private CommonResult<List<WelcomePaySetting>> readXls(InputStream inputStream) throws IOException, ParseException {
        List<WelcomePaySetting> result = new ArrayList<>();
        HSSFWorkbook sheets = new HSSFWorkbook(inputStream);

        List<WelcomeOrg> ws = welcomeOrgService.list(null);

        //读取第一张sheet
        HSSFSheet sheetAt = sheets.getSheetAt(0);
        DataFormatter dataFormatter = new DataFormatter();

        try {
            //rowNum = 3 从第三行开始获取值
            //sheetAt.getLastRowNum()：从0开始统计数量 所以得+1
            for (int rowNum = 0; rowNum < sheetAt.getLastRowNum() + 1; rowNum++) {

                HSSFRow row = sheetAt.getRow(rowNum);

                if (row != null) {
                    //使用了getStringCellValue()方法来获取值，POI会判断单元格的类型，如果非字符串类型就会抛出上面的异常。
                    //所以先使用setCellType()方法先将该单元格的类型设置为STRING
                    //然后poi会根据字符串读取它
                    //第一行数据获取月份
                    if (rowNum == 0) {
                        String number = dataFormatter.formatCellValue(row.getCell(0));//序号
                        if (!number.equals("序号")) {
                            return CommonResult.fail("导入数据第一列为序号");
                        }
                        String college = dataFormatter.formatCellValue(row.getCell(1));//学院
                        if (!college.equals("学院")) {
                            return CommonResult.fail("导入数据第二列为学院");
                        }
                        String major = dataFormatter.formatCellValue(row.getCell(2));//专业名称
                        if (!major.equals("专业名称")) {
                            return CommonResult.fail("导入数据第三列为专业名称");
                        }
                        String eduLevel = dataFormatter.formatCellValue(row.getCell(3));//层次
                        if (!eduLevel.equals("层次")) {
                            return CommonResult.fail("导入数据第四列为层次");
                        }
                        String eduSystem = dataFormatter.formatCellValue(row.getCell(4));//学制
                        if (!eduSystem.equals("学制")) {
                            return CommonResult.fail("导入数据第五列为学制");
                        }
                        String payMoney = dataFormatter.formatCellValue(row.getCell(5));//金额
                        if (!payMoney.equals("金额")) {
                            return CommonResult.fail("导入数据第六列为金额");
                        }

                    } else {
                        WelcomePaySetting paySetting = new WelcomePaySetting();

                        String college = dataFormatter.formatCellValue(row.getCell(1));//学院
                        if (!StringUtils.hasText(college)) {
                            break;
                        }

                        //region 院系专业
                        Optional<WelcomeOrg> owo = ws.stream().filter(e -> e.getName().equals(college)).findFirst();
                        if (owo != null && owo.isPresent()) {
                            paySetting.setCollegeName(college);
                            paySetting.setCollegeId(owo.get().getId());
                        }

                        String major = dataFormatter.formatCellValue(row.getCell(2));//专业
                        Optional<WelcomeOrg> omwo = ws.stream().filter(e -> owo != null && owo.isPresent() && e.getParentId().intValue() == owo.get().getId().intValue() && e.getName().equals(major)).findFirst();
                        if (omwo != null && omwo.isPresent()) {
                            paySetting.setMajorName(major);
                            paySetting.setMajorId(omwo.get().getId());
                        }

                        String eduLevel = dataFormatter.formatCellValue(row.getCell(3));//层次
                        paySetting.setEduLevel(eduLevel);
                        String eduSystem = dataFormatter.formatCellValue(row.getCell(4));//学制
                        paySetting.setEduSystem(eduSystem);
                        String payMoney = dataFormatter.formatCellValue(row.getCell(5));//金额
                        paySetting.setPayAmount(new BigDecimal(payMoney));
                        result.add(paySetting);
                    }
                }
            }
        } catch (Exception e) {
            return CommonResult.fail("请按模板格式导入数据");
        }

        return CommonResult.ok(result);
    }

    /**
     * xlsx文件读取方法
     *
     * @param inputStream
     * @return
     * @throws IOException
     * @throws ParseException
     */
    private CommonResult<List<WelcomePaySetting>> readXlsx(InputStream inputStream) throws IOException, ParseException {
        List<WelcomePaySetting> result = new ArrayList<>();
        XSSFWorkbook sheets = new XSSFWorkbook(inputStream);

        List<WelcomeOrg> ws = welcomeOrgService.list(null);

        //读取第一张sheet
        XSSFSheet sheetAt = sheets.getSheetAt(0);
        DataFormatter dataFormatter = new DataFormatter();

        try {
            //rowNum = 3 从第三行开始获取值
            //sheetAt.getLastRowNum()：从0开始统计数量 所以得+1
            for (int rowNum = 0; rowNum < sheetAt.getLastRowNum() + 1; rowNum++) {

                XSSFRow row = sheetAt.getRow(rowNum);

                if (row != null) {
                    //使用了getStringCellValue()方法来获取值，POI会判断单元格的类型，如果非字符串类型就会抛出上面的异常。
                    //所以先使用setCellType()方法先将该单元格的类型设置为STRING
                    //然后poi会根据字符串读取它
                    //第一行数据获取月份
                    if (rowNum == 0) {
                        String number = dataFormatter.formatCellValue(row.getCell(0));//序号
                        if (!number.equals("序号")) {
                            return CommonResult.fail("导入数据第一列为序号");
                        }
                        String college = dataFormatter.formatCellValue(row.getCell(1));//学院
                        if (!college.equals("学院")) {
                            return CommonResult.fail("导入数据第二列为学院");
                        }
                        String major = dataFormatter.formatCellValue(row.getCell(2));//专业名称
                        if (!major.equals("专业名称")) {
                            return CommonResult.fail("导入数据第三列为专业名称");
                        }
                        String eduLevel = dataFormatter.formatCellValue(row.getCell(3));//层次
                        if (!eduLevel.equals("层次")) {
                            return CommonResult.fail("导入数据第四列为层次");
                        }
                        String eduSystem = dataFormatter.formatCellValue(row.getCell(4));//学制
                        if (!eduSystem.equals("学制")) {
                            return CommonResult.fail("导入数据第五列为学制");
                        }
                        String payMoney = dataFormatter.formatCellValue(row.getCell(5));//金额
                        if (!payMoney.equals("金额")) {
                            return CommonResult.fail("导入数据第六列为金额");
                        }

                    } else {
                        WelcomePaySetting paySetting = new WelcomePaySetting();

                        String college = dataFormatter.formatCellValue(row.getCell(1));//学院
                        if (!StringUtils.hasText(college)) {
                            break;
                        }

                        //region 院系专业
                        Optional<WelcomeOrg> owo = ws.stream().filter(e -> e.getName().equals(college)).findFirst();
                        if (owo != null && owo.isPresent()) {
                            paySetting.setCollegeName(college);
                            paySetting.setCollegeId(owo.get().getId());
                        }

                        String major = dataFormatter.formatCellValue(row.getCell(2));//专业
                        Optional<WelcomeOrg> omwo = ws.stream().filter(e -> owo != null && owo.isPresent() && e.getParentId().intValue() == owo.get().getId().intValue() && e.getName().equals(major)).findFirst();
                        if (omwo != null && omwo.isPresent()) {
                            paySetting.setMajorName(major);
                            paySetting.setMajorId(omwo.get().getId());
                        }

                        String eduLevel = dataFormatter.formatCellValue(row.getCell(3));//层次
                        paySetting.setEduLevel(eduLevel);
                        String eduSystem = dataFormatter.formatCellValue(row.getCell(4));//学制
                        paySetting.setEduSystem(eduSystem);
                        String payMoney = dataFormatter.formatCellValue(row.getCell(5));//金额
                        paySetting.setPayAmount(new BigDecimal(payMoney));
                        result.add(paySetting);
                    }
                }
            }
        } catch (Exception e) {
            return CommonResult.fail("请按模板格式导入数据");
        }

        return CommonResult.ok(result);
    }

    @Override
    public CommonResult downloadPaySettingExcel() {
        return CommonResult.ok("200", "操作成功", "https://chtech.ncjti.edu.cn/welcome/homeimage/缴费设置管理.xlsx");
    }

    @Override
    public void paySettingExport(String userId, HttpServletResponse response, Integer collegeId, Integer majorId, String eduLevel) {
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("缴费设置");
        List<WelcomePaySetting> result = welcomePaySettingService.queryPaySettingsById(collegeId, majorId, eduLevel);

        //导出
        Row headerRow = sheet.createRow(0);
        headerRow.createCell(0).setCellValue("序号");
        headerRow.createCell(1).setCellValue("学院");
        headerRow.createCell(2).setCellValue("专业名称");
        headerRow.createCell(3).setCellValue("层次");
        headerRow.createCell(4).setCellValue("学制");
        headerRow.createCell(5).setCellValue("金额");
        for (int i = 0; i < result.size(); i++) {
            WelcomePaySetting studentData = result.get(i);
            Row dataRow = sheet.createRow(i + 1);
            dataRow.createCell(0).setCellValue(i + 1);
            dataRow.createCell(1).setCellValue(studentData.getCollegeName());
            dataRow.createCell(2).setCellValue(studentData.getMajorName());
            dataRow.createCell(3).setCellValue(studentData.getEduLevel());
            dataRow.createCell(4).setCellValue(studentData.getEduSystem());
            dataRow.createCell(5).setCellValue(String.format("%02d", studentData.getPayAmount()));
        }
        // 将工作簿写入文件
        ExcelUtils.excelDownload(workbook, "缴费设置.xlsx", response);
    }

}