import dayjs from 'dayjs';
import path from 'path';
import resSend from '../util/resSend.js';
import { isImageFile } from '../middleware/fileUpload.js';
import { compressImage } from '../util/imageCompressor.js';
import { Files } from '../model/index.js';

const file = {
  upload: async (req: any, res: any) => {
    if (!req.file) return resSend(res, 404, '请选择要上传的文件');

    const { isDb, type: myType } = req.body;

    const upPath = req.query.upPath || 'default';

    const file = req.file;
    const isImage = isImageFile(file.mimetype);
    const fileSize = file.size;

    let message = '文件上传成功';

    let result: any = {
      originalName: file.originalname,
      originalUrl: `/uploads/${upPath}/${path.basename(file.path)}`,
      size: file.size,
      compressedUrl: '',
    };

    // 如果是图片且大于500KB，进行压缩
    if (isImage && fileSize > 500 * 1024) {
      const compressedFilename = 'compressed-' + path.basename(file.filename);
      const compressedPath = path.join(path.dirname(file.path), compressedFilename);

      const compressionResult = await compressImage(file.path, compressedPath);

      if (compressionResult.success) {
        result.compressedUrl = `/uploads/${upPath}/${compressedFilename}`;
        result.compressedSize = compressionResult.finalSize;
        message = `文件上传成功，图片已从${(fileSize / 1024).toFixed(2)}KB压缩至${(
          (compressionResult.finalSize || 0) / 1024
        ).toFixed(2)}KB`;
      } else {
        message = '文件上传成功，但图片压缩失败，仅返回原图';
      }
    }

    // 如果需要存储到数据库
    if (isDb === 'true') {
      const fileRecord = new Files({
        ...result,
        filename: path.basename(file.filename),
        mimetype: file.mimetype,
        type: myType || 'other',
        updateTime: dayjs().format('YYYY-MM-DD HH:mm:ss'),
      });
      await fileRecord.save();
      result._id = fileRecord._id;
      result.type = fileRecord.type;
      result.updateTime = fileRecord.updateTime;
    }

    // 记录API描述（根据您之前的代码风格）
    req.apiDescription = `文件上传-${file.originalname}`;

    return resSend(res, 0, message, result);
  },
};

export default file;