package com.ruoyi.measuringinstrumentledger.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.common.enums.FileNameType;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.measuringinstrumentledger.dto.MeasuringInstrumentLedgerDto;
import com.ruoyi.measuringinstrumentledger.mapper.MeasuringInstrumentLedgerMapper;
import com.ruoyi.measuringinstrumentledger.mapper.MeasuringInstrumentLedgerRecordMapper;
import com.ruoyi.measuringinstrumentledger.pojo.MeasuringInstrumentLedger;
import com.ruoyi.measuringinstrumentledger.pojo.MeasuringInstrumentLedgerRecord;
import com.ruoyi.measuringinstrumentledger.service.MeasuringInstrumentLedgerService;
import com.ruoyi.other.mapper.TempFileMapper;
import com.ruoyi.other.pojo.TempFile;
import com.ruoyi.project.system.domain.SysUser;
import com.ruoyi.project.system.mapper.SysUserMapper;
import com.ruoyi.sales.mapper.CommonFileMapper;
import com.ruoyi.sales.pojo.CommonFile;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FilenameUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import java.util.stream.Collectors;

/**
 * @author :yys
 * @date : 2025/8/5 9:23
 */
@Service
@Slf4j
public class MeasuringInstrumentLedgerServiceImpl extends ServiceImpl<MeasuringInstrumentLedgerMapper, MeasuringInstrumentLedger> implements MeasuringInstrumentLedgerService {

    @Autowired
    private MeasuringInstrumentLedgerMapper measuringInstrumentLedgerMapper;

    @Autowired
    private MeasuringInstrumentLedgerRecordMapper measuringInstrumentLedgerRecordMapper;

    @Autowired
    private TempFileMapper tempFileMapper;

    @Autowired
    private CommonFileMapper commonFileMapper;

    @Autowired
    private SysUserMapper sysUserMapper;

    @Value("${file.upload-dir}")
    private String uploadDir;

    @Override
    public IPage<MeasuringInstrumentLedger> listPage(Page page, MeasuringInstrumentLedger measuringInstrumentLedger) {
        IPage<MeasuringInstrumentLedger> measuringInstrumentLedgerIPage = measuringInstrumentLedgerMapper.listPage(page, measuringInstrumentLedger);
        List<Integer>  types = new ArrayList<>();
        types.add(FileNameType.MEASURING.getValue());
        types.add(FileNameType.MEASURINGRecord.getValue());
        measuringInstrumentLedgerIPage.getRecords().forEach(item -> {
            LambdaQueryWrapper<MeasuringInstrumentLedgerRecord> measuringInstrumentLedgerRecordLambdaQueryWrapper = new LambdaQueryWrapper<>();
            measuringInstrumentLedgerRecordLambdaQueryWrapper.eq(MeasuringInstrumentLedgerRecord::getMeasuringInstrumentLedgerId, item.getId());
            List<MeasuringInstrumentLedgerRecord> measuringInstrumentLedgerRecords = measuringInstrumentLedgerRecordMapper.selectList(measuringInstrumentLedgerRecordLambdaQueryWrapper);
            List<Long> collect = new ArrayList<>();
            if(!CollectionUtils.isEmpty(measuringInstrumentLedgerRecords)){
                collect = measuringInstrumentLedgerRecords.stream().map(MeasuringInstrumentLedgerRecord::getId).collect(Collectors.toList());
            }
            collect.add(item.getId());
            LambdaQueryWrapper<CommonFile> salesLedgerFileWrapper = new LambdaQueryWrapper<>();
            salesLedgerFileWrapper.in(CommonFile::getCommonId, collect)
                    .in(CommonFile::getType,types);
            List<CommonFile> commonFiles = commonFileMapper.selectList(salesLedgerFileWrapper);
            item.setCommonFiles(commonFiles);

        });
        return measuringInstrumentLedgerIPage;
    }

    @Override
    public boolean verifying(MeasuringInstrumentLedgerDto req) throws IOException {
        MeasuringInstrumentLedger measuringInstrumentLedger = measuringInstrumentLedgerMapper.selectById(req.getId());
        if(measuringInstrumentLedger == null) {
            return false;
        }
        SysUser sysUser = sysUserMapper.selectUserById(measuringInstrumentLedger.getUserId());
        measuringInstrumentLedger.setValid(req.getValid());
        measuringInstrumentLedger.setMostDate(req.getRecordDate());
        measuringInstrumentLedger.setNextDate(new Date(req.getRecordDate().getTime() + 1000L * 60 * 60 * 24 * req.getValid()));
        MeasuringInstrumentLedgerRecord measuringInstrumentLedgerRecord = new MeasuringInstrumentLedgerRecord();
        if(measuringInstrumentLedgerMapper.updateById(measuringInstrumentLedger) > 0) {
            measuringInstrumentLedgerRecord.setMeasuringInstrumentLedgerId(req.getId());
            measuringInstrumentLedgerRecord.setRecordDate(req.getRecordDate());
            measuringInstrumentLedgerRecord.setEntryDate(req.getEntryDate());
            measuringInstrumentLedgerRecord.setValid(req.getValid());
            measuringInstrumentLedgerRecord.setUserId(req.getUserId());
            measuringInstrumentLedgerRecord.setUserName(sysUser.getUserName());
            measuringInstrumentLedgerRecordMapper.insert(measuringInstrumentLedgerRecord);
            // 台账绑定一次
//            if(!CollectionUtils.isEmpty(req.getTempFileIds())){
//                migrateTempFilesToFormal(measuringInstrumentLedger.getId(), req.getTempFileIds(), FileNameType.MEASURING.getValue());
//            }
            // 台账记录绑定一次
            if(!CollectionUtils.isEmpty(req.getTempFileIds())){
                migrateTempFilesToFormal(measuringInstrumentLedgerRecord.getId(), req.getTempFileIds(), FileNameType.MEASURINGRecord.getValue());
            }
            return true;
        }
        return false;
    }

    @Override
    public void export(HttpServletResponse response) {
        List<MeasuringInstrumentLedger> list = measuringInstrumentLedgerMapper.listPage(new MeasuringInstrumentLedger());
        ExcelUtil<MeasuringInstrumentLedger> util = new ExcelUtil<MeasuringInstrumentLedger>(MeasuringInstrumentLedger.class);
        util.exportExcel(response, list , "客户档案数据");
    }

    @Override
    public boolean add(MeasuringInstrumentLedger measuringInstrumentLedger) throws IOException {
        SysUser sysUser = sysUserMapper.selectUserById(measuringInstrumentLedger.getUserId());
        if (sysUser == null) {
            return false;
        }
        measuringInstrumentLedger.setUserName(sysUser.getUserName());
        measuringInstrumentLedgerMapper.insert(measuringInstrumentLedger);
        if(!CollectionUtils.isEmpty(measuringInstrumentLedger.getTempFileIds())){
            migrateTempFilesToFormal(measuringInstrumentLedger.getId(), measuringInstrumentLedger.getTempFileIds(), FileNameType.MEASURING.getValue());
        }
        return true;
    }


    /**
     * 将临时文件迁移到正式目录
     *
     * @param businessId  业务ID（销售台账ID）
     * @param tempFileIds 临时文件ID列表
     * @throws IOException 文件操作异常
     */
    private void migrateTempFilesToFormal(Long businessId, List<String> tempFileIds,Integer fileType) throws IOException {
        if (CollectionUtils.isEmpty(tempFileIds)) {
            return;
        }

        // 构建正式目录路径（按业务类型和日期分组）
        String formalDir = uploadDir + LocalDate.now().format(DateTimeFormatter.ISO_LOCAL_DATE);

        Path formalDirPath = Paths.get(formalDir);

        // 确保正式目录存在（递归创建）
        if (!Files.exists(formalDirPath)) {
            Files.createDirectories(formalDirPath);
        }

        for (String tempFileId : tempFileIds) {
            // 查询临时文件记录
            TempFile tempFile = tempFileMapper.selectById(tempFileId);
            if (tempFile == null) {
                log.warn("临时文件不存在，跳过处理: {}", tempFileId);
                continue;
            }

            // 构建正式文件名（包含业务ID和时间戳，避免冲突）
            String originalFilename = tempFile.getOriginalName();
            String fileExtension = FilenameUtils.getExtension(originalFilename);
            String formalFilename = businessId + "_" +
                    System.currentTimeMillis() + "_" +
                    UUID.randomUUID().toString().substring(0, 8) +
                    (StringUtils.hasText(fileExtension) ? "." + fileExtension : "");

            Path formalFilePath = formalDirPath.resolve(formalFilename);

            try {
                // 执行文件迁移（使用原子操作确保安全性）
                Files.move(
                        Paths.get(tempFile.getTempPath()),
                        formalFilePath,
                        StandardCopyOption.REPLACE_EXISTING,
                        StandardCopyOption.ATOMIC_MOVE
                );
                log.info("文件迁移成功: {} -> {}", tempFile.getTempPath(), formalFilePath);

                // 更新文件记录（关联到业务ID）
                CommonFile fileRecord = new CommonFile();
                fileRecord.setCommonId(businessId);
                fileRecord.setName(originalFilename);
                fileRecord.setUrl(formalFilePath.toString());
                fileRecord.setCreateTime(LocalDateTime.now());
                fileRecord.setType(fileType);
                commonFileMapper.insert(fileRecord);

                // 删除临时文件记录
                tempFileMapper.deleteById(tempFile);

                log.info("文件迁移成功: {} -> {}", tempFile.getTempPath(), formalFilePath);
            } catch (IOException e) {
                log.error("文件迁移失败: {}", tempFile.getTempPath(), e);
                // 可选择回滚事务或记录失败文件
                throw new IOException("文件迁移异常", e);
            }
        }
    }
}