import { Router } from 'express';
import multer, { diskStorage } from 'multer';
import { join, extname } from 'path';
import { existsSync, mkdirSync } from 'fs';

const router = Router();

// 设置存储引擎
const storage = diskStorage({
    destination: function (req, file, cb) {
        const tempDir = join(__dirname, '../../static/Temp');
        if (!existsSync(tempDir)){
            mkdirSync(tempDir, { recursive: true }); // 添加 recursive 参数以确保目录递归创建
        }
        cb(null, tempDir);
    },
    filename: function (req, file, cb) {
        cb(null, Date.now() + extname(file.originalname)); // 重命名文件以避免冲突
    }
});

const upload = multer({ storage: storage });

// 添加API路由来处理文件上传
router.post('/uploadImage', upload.single('file'), (req, res) => {
    if (!req.file) {
        return res.status(400).send('No file uploaded.');
    }
    // 返回图片保存的地址与文件名
    const fileResponse = {
        filePath: req.file.path,
        fileName: req.file.filename
    };
    res.json(fileResponse);
});
export default router;