package com.smppw.modaq.domain.service;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.exceptions.ExceptionUtil;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.StrUtil;
import com.smppw.modaq.application.components.ReportParseUtils;
import com.smppw.modaq.application.components.report.parser.ReportParser;
import com.smppw.modaq.application.components.report.parser.ReportParserFactory;
import com.smppw.modaq.application.components.report.writer.ReportWriter;
import com.smppw.modaq.application.components.report.writer.ReportWriterFactory;
import com.smppw.modaq.application.util.EmailUtil;
import com.smppw.modaq.common.conts.DateConst;
import com.smppw.modaq.common.conts.EmailParseStatusConst;
import com.smppw.modaq.common.conts.EmailTypeConst;
import com.smppw.modaq.common.enums.ReportParseStatus;
import com.smppw.modaq.common.enums.ReportParserFileType;
import com.smppw.modaq.common.enums.ReportType;
import com.smppw.modaq.common.exception.ReportParseException;
import com.smppw.modaq.domain.dto.EmailContentInfoDTO;
import com.smppw.modaq.domain.dto.EmailZipFileDTO;
import com.smppw.modaq.domain.dto.MailboxInfoDTO;
import com.smppw.modaq.domain.dto.report.ParseResult;
import com.smppw.modaq.domain.dto.report.ReportData;
import com.smppw.modaq.domain.dto.report.ReportParserParams;
import com.smppw.modaq.domain.entity.EmailFileInfoDO;
import com.smppw.modaq.domain.entity.EmailParseInfoDO;
import com.smppw.modaq.domain.mapper.EmailFileInfoMapper;
import com.smppw.modaq.domain.mapper.EmailParseInfoMapper;
import com.smppw.modaq.infrastructure.util.ExcelUtil;
import com.smppw.modaq.infrastructure.util.FileUtil;
import jakarta.mail.*;
import jakarta.mail.internet.MimeUtility;
import jakarta.mail.search.ComparisonTerm;
import jakarta.mail.search.ReceivedDateTerm;
import jakarta.mail.search.SearchTerm;
import org.apache.commons.compress.archivers.ArchiveException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.StopWatch;

import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

/**
 * @author mozuwen
 * @date 2024-09-04
 * @description 邮件解析服务
 */
@Service
public class EmailParseService {

    //    public static final int stepSize = 10000;
    private static final Logger log = LoggerFactory.getLogger(EmailParseService.class);

    //    private final EmailFieldMappingMapper emailFieldMapper;
    private final EmailParseInfoMapper emailParseInfoMapper;
    private final EmailFileInfoMapper emailFileInfoMapper;
    /* 报告解析和入库的方法 */
    private final ReportParserFactory reportParserFactory;
    private final ReportWriterFactory reportWriterFactory;


    @Value("${email.file.path}")
    private String path;


    public EmailParseService(EmailParseInfoMapper emailParseInfoMapper,
                             EmailFileInfoMapper emailFileInfoMapper,
                             ReportParserFactory reportParserFactory,
                             ReportWriterFactory reportWriterFactory) {
        this.emailParseInfoMapper = emailParseInfoMapper;
        this.emailFileInfoMapper = emailFileInfoMapper;
        this.reportParserFactory = reportParserFactory;
        this.reportWriterFactory = reportWriterFactory;
    }

    /**
     * 解析指定邮箱指定时间范围内的邮件
     *
     * @param mailboxInfoDTO 邮箱配置信息
     * @param startDate      邮件起始日期(yyyy-MM-dd HH:mm:ss)
     * @param endDate        邮件截止日期(yyyy-MM-dd HH:mm:ss, 为null,将解析邮件日期小于等于startDate的当天邮件)
     */
    public void parseEmail(MailboxInfoDTO mailboxInfoDTO, Date startDate, Date endDate) {
        log.info("开始邮件解析 -> 邮箱信息:{},开始时间:{},结束时间:{}", mailboxInfoDTO, DateUtil.format(startDate,
                DateConst.YYYY_MM_DD_HH_MM_SS), DateUtil.format(endDate, DateConst.YYYY_MM_DD_HH_MM_SS));
        // 邮件类型配置
        Map<Integer, List<String>> emailTypeMap = getEmailType();
        // 邮件字段识别映射表
//        Map<String, List<String>> emailFieldMap = getEmailFieldMapping();
        Map<String, List<EmailContentInfoDTO>> emailContentMap;
        try {
            emailContentMap = realEmail(mailboxInfoDTO, emailTypeMap, startDate, endDate);
        } catch (Exception e) {
            log.info("采集邮件失败 -> 邮箱配置信息:{},堆栈信息:{}", mailboxInfoDTO, ExceptionUtil.stacktraceToString(e));
            return;
        }
        if (MapUtil.isEmpty(emailContentMap)) {
            log.info("未采集到邮件 -> 邮箱配置信息:{},开始时间:{},结束时间:{}", mailboxInfoDTO,
                    DateUtil.format(startDate, DateConst.YYYY_MM_DD_HH_MM_SS), DateUtil.format(endDate, DateConst.YYYY_MM_DD_HH_MM_SS));
            return;
        }
        for (Map.Entry<String, List<EmailContentInfoDTO>> emailEntry : emailContentMap.entrySet()) {
            List<EmailContentInfoDTO> emailContentInfoDTOList = emailEntry.getValue();
            if (CollUtil.isEmpty(emailContentInfoDTOList)) {
                log.warn("未采集到正文或附件");
                continue;
            }
            log.info("开始解析邮件数据 -> 邮件主题:{},邮件日期:{}", emailContentInfoDTOList.get(0).getEmailTitle(), emailContentInfoDTOList.get(0).getEmailDate());
            Map<EmailContentInfoDTO, List<EmailZipFileDTO>> emailZipFileMap = MapUtil.newHashMap();
            Iterator<EmailContentInfoDTO> iterator = emailContentInfoDTOList.iterator();
            while (iterator.hasNext()) {
                EmailContentInfoDTO emailContentInfoDTO = iterator.next();
                // 正文不用解压附件
                if (emailContentInfoDTO.getFileName() != null && emailContentInfoDTO.getFileName().endsWith(".html")) {
                    emailZipFileMap.put(emailContentInfoDTO, ListUtil.empty());
                    continue;
                }
                try {
                    List<EmailZipFileDTO> fundNavDTOList = parseZipEmail(emailContentInfoDTO);
                    emailZipFileMap.put(emailContentInfoDTO, fundNavDTOList);
                } catch (IOException | ArchiveException e) {
                    log.error("压缩包解压失败:{}", ExceptionUtil.stacktraceToString(e));
                    EmailParseInfoDO fail = buildEmailParseInfo(null, mailboxInfoDTO.getAccount(), emailContentInfoDTO);
                    fail.setFailReason("压缩包解压失败");
                    fail.setParseStatus(EmailParseStatusConst.FAIL);
                    fail.setEmailKey(emailEntry.getKey());
                    this.emailParseInfoMapper.insert(fail);
                    iterator.remove();
                } catch (Exception e) {
                    log.error("堆栈信息:{}", ExceptionUtil.stacktraceToString(e));
                }
            }
            // 保存相关信息 -> 邮件信息表,邮件文件表,邮件净值表,邮件规模表,基金净值表
            saveRelatedTable(emailEntry.getKey(), mailboxInfoDTO.getAccount(), emailZipFileMap);
            log.info("结束邮件解析 -> 邮箱信息:{},开始时间:{},结束时间:{}", mailboxInfoDTO,
                    DateUtil.format(startDate, DateConst.YYYY_MM_DD_HH_MM_SS), DateUtil.format(endDate, DateConst.YYYY_MM_DD_HH_MM_SS));
        }
    }

    public List<EmailZipFileDTO> parseZipEmail(EmailContentInfoDTO emailContentInfoDTO) throws Exception {
        List<EmailZipFileDTO> resultList = ListUtil.list(false);
        Integer emailType = emailContentInfoDTO.getEmailType();
        String filepath = emailContentInfoDTO.getFilePath();

        if (ExcelUtil.isZip(filepath)) {
            handleCompressedFiles(filepath, ".zip", emailType, resultList);
        } else if (ExcelUtil.isRAR(filepath)) {
            handleCompressedFiles(filepath, ".rar", emailType, resultList);
        }

        return resultList;
    }

    private void handleCompressedFiles(String filepath, String extension, Integer emailType, List<EmailZipFileDTO> resultList) throws Exception {
        String destPath = getDestinationPath(filepath, extension);
        log.info("压缩包地址:{}, 解压后文件地址:{}", filepath, destPath);

        File destFile = new File(destPath);
        if (!destFile.exists()) {
            if (!destFile.mkdirs()) {
                throw new IOException("无法创建目标目录: " + destPath);
            }
        }

        List<String> extractedDirs;
        if (ExcelUtil.isZip(filepath)) {
            extractedDirs = ExcelUtil.extractCompressedFiles(filepath, destPath);
        } else if (ExcelUtil.isRAR(filepath)) {
            extractedDirs = ExcelUtil.extractRar5(filepath, destPath);
        } else {
            return;
        }
        for (String dir : extractedDirs) {
            // 如果邮件类型不满足解析条件则重新根据文件名判断
            if (!Objects.equals(EmailTypeConst.REPORT_EMAIL_TYPE, emailType)
                    && !Objects.equals(EmailTypeConst.REPORT_LETTER_EMAIL_TYPE, emailType)) {
                emailType = EmailUtil.getEmailTypeBySubject(dir, this.getEmailType());
            }
            File file = new File(dir);
            if (file.isDirectory()) {
                String[] subDirs = file.list();
                if (subDirs != null) {
                    for (String subDir : subDirs) {
                        resultList.add(new EmailZipFileDTO(subDir, emailType));
                    }
                } else {
                    log.warn("目录 {} 下无文件", dir);
                }
            } else {
                resultList.add(new EmailZipFileDTO(dir, emailType));
            }
        }
    }

    private String getDestinationPath(String filepath, String extension) {
        Path path = Paths.get(filepath);
        String fileName = path.getFileName().toString();
        String baseName = fileName.substring(0, fileName.length() - extension.length());
        return path.getParent().resolve(baseName).toString();
    }

    public void saveRelatedTable(String emailKey, String emailAddress,
                                 Map<EmailContentInfoDTO, List<EmailZipFileDTO>> emailZipFileMap) {
        // python 报告解析接口结果
        List<ParseResult<ReportData>> dataList = ListUtil.list(false);
        for (Map.Entry<EmailContentInfoDTO, List<EmailZipFileDTO>> entry : emailZipFileMap.entrySet()) {
            EmailContentInfoDTO emailContentInfoDTO = entry.getKey();
            if (emailContentInfoDTO.getFileName() != null && emailContentInfoDTO.getFileName().endsWith(".html")) {
                continue;
            }
            Integer emailId = emailContentInfoDTO.getEmailId();
            EmailParseInfoDO emailParseInfoDO = buildEmailParseInfo(emailId, emailAddress, emailContentInfoDTO);
            emailParseInfoDO.setEmailKey(emailKey);
            emailId = saveEmailParseInfo(emailParseInfoDO);
            if (emailId == null) {
                continue;
            }

            List<EmailZipFileDTO> zipFiles = entry.getValue();
            if (CollUtil.isNotEmpty(zipFiles)) {
                for (EmailZipFileDTO zipFile : zipFiles) {
                    EmailFileInfoDO emailFile = saveEmailFileInfo(emailId, null, zipFile.getFilename(), zipFile.getFilepath(), null);
                    // 解析结果（可以从python获取或者自行解析）并保存报告
                    ParseResult<ReportData> parseResult = this.parseReportAndHandleResult(emailFile.getId(), zipFile.getFilename(),
                            zipFile.getFilepath(), zipFile.getEmailType(), emailFile.getAiFileId());
                    dataList.add(parseResult);
                }
            } else {
                String fileName = emailContentInfoDTO.getFileName();
                EmailFileInfoDO emailFile = saveEmailFileInfo(emailId, emailContentInfoDTO.getFileId(), fileName,
                        emailContentInfoDTO.getFilePath(), emailContentInfoDTO.getAiFileId());
                // 解析结果（可以从python获取或者自行解析）并保存报告
                ParseResult<ReportData> parseResult = this.parseReportAndHandleResult(emailFile.getId(), fileName,
                        emailContentInfoDTO.getFilePath(), emailContentInfoDTO.getEmailType(), emailFile.getAiFileId());
                dataList.add(parseResult);
            }

            String failReason = null;
            int emailParseStatus = EmailParseStatusConst.SUCCESS;
            // 报告邮件有一条失败就表示整个邮件解析失败
            if (CollUtil.isNotEmpty(dataList)) {
                // ai解析结果
                List<ReportData> aiParaseList = dataList.stream().map(ParseResult::getData)
                        .filter(Objects::nonNull).filter(e -> Objects.equals(true, e.getAiParse())).toList();
                if (CollUtil.isNotEmpty(aiParaseList)) {
                    for (ReportData data : aiParaseList) {
                        this.emailFileInfoMapper.updateAiParseByFileId(data.getBaseInfo().getFileId(), data.getAiParse(), data.getAiFileId());
                    }
                }
                long failNum = dataList.stream().filter(e -> !Objects.equals(EmailParseStatusConst.SUCCESS, e.getStatus())).count();
                if (failNum > 0) {
                    emailParseStatus = EmailParseStatusConst.FAIL;
                    failReason = dataList.stream().map(ParseResult::getMsg).collect(Collectors.joining(";"));
                }
            }
            emailParseInfoMapper.updateParseStatus(emailId, emailParseStatus, failReason);
        }
    }

    private ParseResult<ReportData> parseReportAndHandleResult(int fileId, String fileName,
                                                               String filepath, Integer emailType, String aiFileId) {
        ParseResult<ReportData> result = new ParseResult<>();
        boolean reportFlag = !Objects.equals(EmailTypeConst.REPORT_EMAIL_TYPE, emailType)
                && !Objects.equals(EmailTypeConst.REPORT_LETTER_EMAIL_TYPE, emailType);
        if (reportFlag || StrUtil.isBlank(fileName) || fileName.endsWith(".html")) {
            result.setStatus(ReportParseStatus.NOT_A_REPORT.getCode());
            result.setMsg(StrUtil.format(ReportParseStatus.NOT_A_REPORT.getMsg(), fileName));
            return result;
        }
        Pattern pattern = Pattern.compile("[A-Z0-9]{6}");
        Matcher matcher = pattern.matcher(fileName);
        String registerNumber = null;
        if (matcher.find()) {
            registerNumber = matcher.group();
        }
        // 类型识别---先识别季度报告，没有季度再识别年度报告，最后识别月报
        ReportType reportType = ReportParseUtils.matchReportType(fileName);
        if (Objects.equals(EmailTypeConst.REPORT_LETTER_EMAIL_TYPE, emailType)) {
            reportType = ReportType.LETTER;
        }
        // 解析器--如果开启python解析则直接调用python接口，否则根据文件后缀获取对应解析器
        ReportParserFileType fileType;
        String fileSuffix = StrUtil.subAfter(fileName, ".", true);
        fileType = ReportParserFileType.getBySuffix(fileSuffix);
        // 不支持的格式
        if (fileType == null) {
            result.setStatus(ReportParseStatus.NO_SUPPORT_TEMPLATE.getCode());
            result.setMsg(StrUtil.format(ReportParseStatus.NO_SUPPORT_TEMPLATE.getMsg(), fileName));
            return result;
        }
        // 不是定期报告的判断逻辑放在不支持的格式下面
        if (reportType == null) {
            result.setStatus(ReportParseStatus.NOT_A_REPORT.getCode());
            result.setMsg(StrUtil.format(ReportParseStatus.NOT_A_REPORT.getMsg(), fileName));
            return result;
        }
        // 解析报告
        ReportData reportData = null;
        StopWatch parserWatch = new StopWatch();
        parserWatch.start();
        try {
            ReportParserParams params = ReportParserParams.builder().fileId(fileId).filename(fileName)
                    .filepath(filepath).registerNumber(registerNumber).reportType(reportType).aiFileId(aiFileId).build();
            ReportParser<ReportData> instance = this.reportParserFactory.getInstance(reportType, fileType);
            reportData = instance.parse(params);
            result.setStatus(1);
            result.setMsg("报告解析成功");
            result.setData(reportData);
        } catch (ReportParseException e) {
            log.error("解析失败\n{}", StrUtil.format(e.getMsg(), fileName));
            result.setStatus(e.getCode());
            result.setMsg(StrUtil.format(e.getMsg(), fileName));
        } catch (Exception e) {
            log.error("解析错误\n{}", ExceptionUtil.stacktraceToString(e));
            result.setStatus(ReportParseStatus.PARSE_FAIL.getCode());
            result.setMsg(StrUtil.format(ReportParseStatus.PARSE_FAIL.getMsg(), e.getMessage()));
        } finally {
            parserWatch.stop();
            if (log.isInfoEnabled()) {
                log.info("报告{}解析结果为{}，耗时{}ms", fileName, reportData, parserWatch.getTotalTimeMillis());
            }
        }
        // 保存报告解析结果
        if (reportData != null) {
            StopWatch writeWatch = new StopWatch();
            writeWatch.start();
            try {
                ReportWriter<ReportData> instance = this.reportWriterFactory.getInstance(reportType);
                instance.write(reportData);
            } catch (Exception e) {
                log.error("报告{}结果保存失败\n{}", fileName, ExceptionUtil.stacktraceToString(e));
            } finally {
                writeWatch.stop();
                if (log.isInfoEnabled()) {
                    log.info("报告{}解析结果保存完成，耗时{}ms", fileName, writeWatch.getTotalTimeMillis());
                }
            }
        }
        return result;
    }

    private EmailFileInfoDO saveEmailFileInfo(Integer emailId, Integer fileId, String fileName, String filePath, String aiFileId) {
        EmailFileInfoDO emailFileInfoDO = buildEmailFileInfoDO(emailId, fileId, fileName, filePath);
        emailFileInfoDO.setAiFileId(aiFileId);
        if (emailFileInfoDO.getId() != null) {
            emailFileInfoMapper.updateTimeById(fileId, new Date());
            return emailFileInfoDO;
        }
        emailFileInfoMapper.insert(emailFileInfoDO);
        return emailFileInfoDO;
    }

    private EmailFileInfoDO buildEmailFileInfoDO(Integer emailId, Integer fileId, String fileName, String filePath) {
        EmailFileInfoDO emailFileInfoDO = new EmailFileInfoDO();
        emailFileInfoDO.setId(fileId);
        emailFileInfoDO.setEmailId(emailId);
        emailFileInfoDO.setFileName(fileName);
        emailFileInfoDO.setFilePath(filePath);
        emailFileInfoDO.setIsvalid(1);
        emailFileInfoDO.setCreatorId(0);
        emailFileInfoDO.setCreateTime(new Date());
        emailFileInfoDO.setUpdaterId(0);
        emailFileInfoDO.setUpdateTime(new Date());
        return emailFileInfoDO;
    }

    private Integer saveEmailParseInfo(EmailParseInfoDO emailParseInfoDO) {
        if (emailParseInfoDO == null) {
            return null;
        }
        // 重新邮件功能 -> 修改解析时间和更新时间
        if (emailParseInfoDO.getId() != null) {
            emailParseInfoMapper.updateParseTime(emailParseInfoDO.getId(), emailParseInfoDO.getParseDate());
            return emailParseInfoDO.getId();
        }
//        // 根据邮件发送人、邮件地址、邮箱日期、主题找到是否已经存在的记录（不管是否成功），已存在就不解析了
//        EmailParseInfoDO temp = this.emailParseInfoMapper.searchEmail(emailParseInfoDO);
//        if (temp != null) {
//            return null;
//        }
        emailParseInfoMapper.insert(emailParseInfoDO);
        return emailParseInfoDO.getId();
    }

    private EmailParseInfoDO buildEmailParseInfo(Integer emailId, String emailAddress, EmailContentInfoDTO emailContentInfoDTO) {
        EmailParseInfoDO emailParseInfoDO = new EmailParseInfoDO();
        emailParseInfoDO.setId(emailId);
        emailParseInfoDO.setSenderEmail(emailContentInfoDTO.getSenderEmail());
        emailParseInfoDO.setEmail(emailAddress);
        emailParseInfoDO.setEmailDate(DateUtil.parse(emailContentInfoDTO.getEmailDate(), DateConst.YYYY_MM_DD_HH_MM_SS));
        emailParseInfoDO.setParseDate(emailContentInfoDTO.getParseDate() == null ? null : DateUtil.parseDate(emailContentInfoDTO.getParseDate()));
        emailParseInfoDO.setEmailTitle(emailContentInfoDTO.getEmailTitle());
        emailParseInfoDO.setEmailType(emailContentInfoDTO.getEmailType());
        emailParseInfoDO.setParseStatus(EmailParseStatusConst.SUCCESS);
        emailParseInfoDO.setIsvalid(1);
        emailParseInfoDO.setCreatorId(0);
        emailParseInfoDO.setCreateTime(new Date());
        emailParseInfoDO.setUpdaterId(0);
        emailParseInfoDO.setUpdateTime(new Date());
        return emailParseInfoDO;
    }

    public Map<Integer, List<String>> getEmailType() {
        Map<Integer, List<String>> emailTypeMap = MapUtil.newHashMap(3, true);
        emailTypeMap.put(EmailTypeConst.REPORT_EMAIL_TYPE,
                ListUtil.toList("月报", "月度报告", "季报", "季度报告", "年报", "年度报告"));
        emailTypeMap.put(EmailTypeConst.REPORT_LETTER_EMAIL_TYPE,
                ListUtil.toList("确认单", "确认函", "交易确认数据", "赎回确认", "申购确认", "分红确认", "确认表", "交易确认", "确认"));
        return emailTypeMap;
    }

    /**
     * 读取邮件
     *
     * @param mailboxInfoDTO 邮箱配置信息
     * @param emailTypeMap   邮件类型识别规则映射表
     * @param startDate      邮件起始日期
     * @param endDate        邮件截止日期(为null,将解析邮件日期小于等于startDate的当天邮件)
     * @return 读取到的邮件信息
     * @throws Exception 异常信息
     */
    private Map<String, List<EmailContentInfoDTO>> realEmail(MailboxInfoDTO mailboxInfoDTO,
                                                             Map<Integer, List<String>> emailTypeMap, Date startDate, Date endDate) throws Exception {
        Store store = EmailUtil.getStoreNew(mailboxInfoDTO);
        if (store == null) {
            return MapUtil.newHashMap();
        }
        // 默认读取收件箱的邮件
        Folder folder = store.getFolder("INBOX");
        folder.open(Folder.READ_ONLY);
        Message[] messages = getEmailMessage(folder, mailboxInfoDTO.getProtocol(), startDate);
        if (messages == null || messages.length == 0) {
            log.info("获取不到邮件 -> 邮箱信息:{},开始时间:{},结束时间:{}", mailboxInfoDTO, startDate, endDate);
            return MapUtil.newHashMap();
        }
        Map<String, List<EmailContentInfoDTO>> emailMessageMap = MapUtil.newHashMap();
        for (Message message : messages) {
            long start = System.currentTimeMillis();
            List<EmailContentInfoDTO> emailContentInfoDTOList = CollUtil.newArrayList();
            String uuidKey = UUID.randomUUID().toString().replaceAll("-", "");
            Integer emailType;
            String senderEmail;
            String emailTitle = null;
            try {
                Date emailDate = message.getSentDate();
                boolean isNotParseConditionSatisfied = emailDate == null || (endDate != null && emailDate.compareTo(endDate) > 0) || (startDate != null && emailDate.compareTo(startDate) < 0);
                if (isNotParseConditionSatisfied) {
                    continue;
                }
                emailTitle = message.getSubject();
                senderEmail = getSenderEmail(message);
                emailType = EmailUtil.getEmailTypeBySubject(emailTitle, emailTypeMap);
                String emailDateStr = DateUtil.format(emailDate, DateConst.YYYY_MM_DD_HH_MM_SS);
                if (emailType == null) {
                    log.info("邮件不满足解析条件 -> 邮件主题:{},邮件日期:{}", emailTitle, emailDateStr);
                    continue;
                }
                log.info("邮件{} 基本信息获取完成，开始下载附件！邮件日期:{}", emailTitle, emailDateStr);
                Object content = message.getContent();

                if (content instanceof Multipart multipart) {
                    this.reMultipart(mailboxInfoDTO.getAccount(), emailTitle, emailDate, multipart, emailContentInfoDTOList);
                } else if (content instanceof Part part) {
                    this.rePart(mailboxInfoDTO.getAccount(), emailTitle, emailDate, part, emailContentInfoDTOList);
                } else {
                    log.warn("不支持的邮件数据 {}", emailTitle);
                }

                if (CollUtil.isNotEmpty(emailContentInfoDTOList)) {
                    emailContentInfoDTOList.forEach(e -> {
                        e.setEmailType(emailType);
                        e.setSenderEmail(senderEmail);
                    });
                    emailMessageMap.put(uuidKey, emailContentInfoDTOList);
                }
            } catch (Exception e) {
                log.error("获取邮箱的邮件{} 报错,堆栈信息:{}", emailTitle, ExceptionUtil.stacktraceToString(e));
            } finally {
                if (log.isInfoEnabled()) {
                    log.info("邮件{} 下载完成，总计耗时{} ms", emailTitle, System.currentTimeMillis() - start);
                }
            }
        }
        folder.close(false);
        store.close();
        return emailMessageMap;
    }

    private void rePart(String account, String subject, Date sendDate, Part part, List<EmailContentInfoDTO> emailContentInfoDTOList) throws Exception {
        String disposition = part.getDisposition();
        if (disposition != null && (disposition.equals(Part.ATTACHMENT) || disposition.equals(Part.INLINE))) {
            String emailDate = DateUtil.format(sendDate, DateConst.YYYYMMDDHHMMSS24);
            String emailDateStr = DateUtil.format(sendDate, DateConst.YYYYMMDD);
            String filePath = path + File.separator + account + File.separator + emailDateStr + File.separator;

            EmailContentInfoDTO emailContentInfoDTO = new EmailContentInfoDTO();

            String fileName = MimeUtility.decodeText(part.getFileName());
            emailContentInfoDTO.setFileName(fileName);
            emailContentInfoDTO.setFileSize((long) part.getSize());

            String realPath = filePath + emailDate + fileName;

            File saveFile = cn.hutool.core.io.FileUtil.file(realPath);
            if (!saveFile.exists()) {
                if (!saveFile.getParentFile().exists()) {
                    boolean mkdirs = saveFile.getParentFile().mkdirs();
                    if (!mkdirs) {
                        log.warn("file path mkdir failed.");
                    }
                }
                FileUtil.saveFile(saveFile, part);
            } else {
                cn.hutool.core.io.FileUtil.del(saveFile);
                FileUtil.saveFile(saveFile, part);
            }
            emailContentInfoDTO.setFilePath(realPath);

            emailContentInfoDTO.setEmailAddress(account);
            emailContentInfoDTO.setEmailTitle(subject);
            emailContentInfoDTO.setEmailDate(DateUtil.format(sendDate, DateConst.YYYY_MM_DD_HH_MM_SS));
            emailContentInfoDTOList.add(emailContentInfoDTO);
        }
    }

    private void reMultipart(String account, String subject, Date emailDate, Multipart multipart, List<EmailContentInfoDTO> emailContentInfoDTOList) throws Exception {
        for (int i = 0; i < multipart.getCount(); i++) {
            Part bodyPart = multipart.getBodyPart(i);
            if (bodyPart.getContent() instanceof Multipart mp) {
                this.reMultipart(account, subject, emailDate, mp, emailContentInfoDTOList);
            } else {
                this.rePart(account, subject, emailDate, bodyPart, emailContentInfoDTOList);
            }
        }
    }

    private String getSenderEmail(Message message) {
        Address[] senderAddress;
        try {
            senderAddress = message.getFrom();
            if (senderAddress == null || senderAddress.length == 0) {
                return null;
            }
            // 此时的address是含有编码(MIME编码方式)后的文本和实际的邮件地址
            String address = "";
            for (Address from : senderAddress) {
                if (StrUtil.isNotBlank(from.toString())) {
                    address = from.toString();
                    break;
                }
            }
            // 正则表达式匹配邮件地址
            Pattern pattern = Pattern.compile("<(\\S+)>");
            Matcher matcher = pattern.matcher(address);
            if (matcher.find()) {
                return matcher.group(1);
            }
//            //说明匹配不到，直接获取sender
//            Address sender = message.getSender();
//            if (sender == null) {
//                return address;
//            }
//            String senderEmail = sender.toString();
//            log.info("senderEmail:" + senderEmail + "====================");
//            if (senderEmail.contains("<") && senderEmail.contains(">") && senderEmail.indexOf("<") < senderEmail.indexOf(">")) {
//                senderEmail = senderEmail.substring(senderEmail.indexOf("<") + 1, senderEmail.length() - 1);
//            }
//            return senderEmail;
        } catch (MessagingException e) {
            log.error(e.getMessage(), e);
        }
        return null;
    }

    private Message[] getEmailMessage(Folder folder, String protocol, Date startDate) {
        try {
            if (protocol.contains("imap")) {
                // 获取邮件日期大于等于startDate的邮件(搜索条件只支持按天)
                SearchTerm startDateTerm = new ReceivedDateTerm(ComparisonTerm.GE, startDate);
                return folder.search(startDateTerm);
            } else {
                return folder.getMessages();
            }
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}