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.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.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.MeasuringInstrumentLedgerRecordService;
import com.ruoyi.other.mapper.TempFileMapper;
import com.ruoyi.other.pojo.TempFile;
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 org.springframework.util.CollectionUtils;

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.Date;
import java.util.List;
import java.util.UUID;
import java.util.stream.Collectors;

/**
 * @author :yys
 * @date : 2025/8/5 9:24
 */
@Service
@Slf4j
public class MeasuringInstrumentLedgerRecordServiceImpl extends ServiceImpl<MeasuringInstrumentLedgerRecordMapper, MeasuringInstrumentLedgerRecord> implements MeasuringInstrumentLedgerRecordService {

    @Autowired
    private MeasuringInstrumentLedgerRecordMapper measuringInstrumentLedgerRecordMapper;

    @Autowired
    private MeasuringInstrumentLedgerMapper measuringInstrumentLedgerMapper;

    @Autowired
    private CommonFileMapper commonFileMapper;

    @Autowired
    private TempFileMapper tempFileMapper;

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

    @Override
    public IPage<MeasuringInstrumentLedgerRecord> listPage(Page page, MeasuringInstrumentLedgerRecord measuringInstrumentLedgerRecord) {
        IPage<MeasuringInstrumentLedgerRecord> measuringInstrumentLedgerRecordIPage = measuringInstrumentLedgerRecordMapper.listPage(page, measuringInstrumentLedgerRecord);
        measuringInstrumentLedgerRecordIPage.getRecords().forEach(item -> {
            LambdaQueryWrapper<CommonFile> salesLedgerFileWrapper = new LambdaQueryWrapper<>();
            salesLedgerFileWrapper.eq(CommonFile::getCommonId, item.getId());
            List<CommonFile> commonFiles = commonFileMapper.selectList(salesLedgerFileWrapper);
            item.setCommonFiles(commonFiles);
        });
        return measuringInstrumentLedgerRecordIPage;
    }

    @Override
    public void export(HttpServletResponse response) {
        List<MeasuringInstrumentLedgerRecord> list = measuringInstrumentLedgerRecordMapper.list( new MeasuringInstrumentLedgerRecord());
        ExcelUtil<MeasuringInstrumentLedgerRecord> util = new ExcelUtil<MeasuringInstrumentLedgerRecord>(MeasuringInstrumentLedgerRecord.class);
        util.exportExcel(response, list , "计量器具台账记录数据");
    }

    @Override
    public boolean updateMeasuringInstrumentLedgerRecord(MeasuringInstrumentLedgerRecord measuringInstrumentLedgerRecord) throws IOException {
        MeasuringInstrumentLedgerRecord measuringInstrumentLedgerRecord1 = measuringInstrumentLedgerRecordMapper.selectById(measuringInstrumentLedgerRecord.getId());
        if (measuringInstrumentLedgerRecord1 == null) {
            return false;
        }
        // 有效期变更，重新计算预计下次检定日期
        if(!measuringInstrumentLedgerRecord1.getValid().equals(measuringInstrumentLedgerRecord.getValid())){
            MeasuringInstrumentLedger measuringInstrumentLedger = measuringInstrumentLedgerMapper.selectById(measuringInstrumentLedgerRecord1.getMeasuringInstrumentLedgerId());
            if(measuringInstrumentLedger != null){
                measuringInstrumentLedger.setValid(measuringInstrumentLedgerRecord.getValid());
                measuringInstrumentLedger.setNextDate(new Date(measuringInstrumentLedger.getMostDate().getTime() + measuringInstrumentLedgerRecord.getValid() * 24 * 60 * 60 * 1000L));
            }
            measuringInstrumentLedgerMapper.updateById(measuringInstrumentLedger);
        }
        measuringInstrumentLedgerRecordMapper.updateById(measuringInstrumentLedgerRecord);
        // 记录附件绑定
        migrateTempFilesToFormal(measuringInstrumentLedgerRecord.getId(), measuringInstrumentLedgerRecord.getTempFileIds(), FileNameType.MEASURINGRecord.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 (com.baomidou.mybatisplus.core.toolkit.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);
            }
        }
    }
}