package com.ruoyi.aftersalesservice.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.aftersalesservice.mapper.AfterSalesServiceFileMapper;
import com.ruoyi.aftersalesservice.pojo.AfterSalesService;
import com.ruoyi.aftersalesservice.pojo.AfterSalesServiceFile;
import com.ruoyi.aftersalesservice.service.AfterSalesServiceFileService;
import com.ruoyi.aftersalesservice.service.AfterSalesServiceService;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUtils;
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.web.multipart.MultipartFile;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.UUID;

/**
 * <br>
 * 售后服务附件表接口实现类
 * </br>
 *
 * @author deslrey
 * @version 1.0
 * @since 2026/03/02 11:19
 */
@Service
public class AfterSalesServiceFileServiceImpl extends ServiceImpl<AfterSalesServiceFileMapper, AfterSalesServiceFile> implements AfterSalesServiceFileService {

    @Autowired
    private AfterSalesServiceService afterSalesServiceService;

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

    @Override
    public void fileUpload(MultipartFile file, Long afterSalesServiceId) {
        if (file == null || file.isEmpty()) {
            throw new ServiceException("上传文件不能为空");
        }
        if (afterSalesServiceId == null) {
            throw new ServiceException("售后服务ID不能为空");
        }
        AfterSalesService afterSalesService = afterSalesServiceService.getById(afterSalesServiceId);
        if (afterSalesService == null) {
            throw new ServiceException("售后服务记录不存在");
        }
        Long currentTenantId = SecurityUtils.getLoginUser().getTenantId();
        if (!currentTenantId.equals(afterSalesService.getTenantId())) {
            throw new ServiceException("无权操作该售后服务记录");
        }

        try {
            String formalDir = uploadDir + LocalDate.now().format(DateTimeFormatter.ISO_LOCAL_DATE);
            Path formalDirPath = Paths.get(formalDir);
            //  正式目录存在
            if (!Files.exists(formalDirPath)) {
                Files.createDirectories(formalDirPath);
            }
            //  正式文件名（包含业务ID + 时间戳 + UUID）
            String originalFilename = file.getOriginalFilename();
            String fileExtension = FilenameUtils.getExtension(originalFilename);
            String formalFilename = afterSalesServiceId + "_" +
                    System.currentTimeMillis() + "_" +
                    UUID.randomUUID().toString().substring(0, 8) +
                    (StringUtils.hasText(fileExtension) ? "." + fileExtension : "");

            Path formalFilePath = formalDirPath.resolve(formalFilename);
            file.transferTo(formalFilePath.toFile());

            AfterSalesServiceFile serviceFile = new AfterSalesServiceFile();
            serviceFile.setServiceId(afterSalesServiceId);
            serviceFile.setFileName(originalFilename);
            serviceFile.setFileUrl(formalFilePath.toString());
            serviceFile.setFileSize(file.getSize());
            serviceFile.setFileSuffix(fileExtension);
            serviceFile.setDelFlag("0");
            serviceFile.setCreateUser(SecurityUtils.getUserId());
            serviceFile.setCreateTime(LocalDateTime.now());
            serviceFile.setTenantId(currentTenantId);
            save(serviceFile);
        } catch (Exception e) {
            throw new ServiceException("文件上传失败：" + e.getMessage());
        }
    }

    @Override
    public IPage<AfterSalesServiceFile> fileList(Page<AfterSalesServiceFile> page, Long afterSalesServiceId) {
        if (afterSalesServiceId == null) {
            throw new ServiceException("售后服务ID不能为空");
        }

        LambdaQueryWrapper<AfterSalesServiceFile> wrapper = new LambdaQueryWrapper<>();
        wrapper.select(
                AfterSalesServiceFile::getId,
                AfterSalesServiceFile::getFileName,
                AfterSalesServiceFile::getFileUrl
        );
        wrapper.eq(AfterSalesServiceFile::getServiceId, afterSalesServiceId)
                .eq(AfterSalesServiceFile::getDelFlag, "0")
                .orderByDesc(AfterSalesServiceFile::getCreateTime);

        return page(page, wrapper);
    }

    @Override
    public void delFile(Long fileId) {
        if (fileId == null) {
            throw new ServiceException("附件ID不能为空");
        }

        Long tenantId = SecurityUtils.getLoginUser().getTenantId();

        AfterSalesServiceFile file = getById(fileId);
        if (file == null) {
            throw new ServiceException("附件不存在");
        }
        if (!tenantId.equals(file.getTenantId())) {
            throw new ServiceException("无权限删除");
        }
        removeById(fileId);

        FileUtils.deleteFile(file.getFileUrl());
    }
}