app.js

const Koa = require('koa');
const Router = require('@koa/router');
const Minio = require('minio');
const cors = require('@koa/cors');

const app = new Koa();
const router = new Router();


app.use(cors({
  origin: '*' 
}));


const minioClient = new Minio.Client({
    endPoint: 's3.dev.osssc.ac.cn',
    useSSL: true,
    accessKey: '9a5MXc4aM4vtKzSLDt9v',
    secretKey: '6sCZVuT4Wkg8aFJbhZ5e'
});

router.get('/presignedUrl', async (ctx) => {
    const bucketName = 'risc-verse';
    const objectName = `${Date.now()}-${ctx.query.filename}`;

    try {
        const presignedUrl = await minioClient.presignedPutObject(bucketName, objectName);
        ctx.body = {
            url: presignedUrl,
            objectName: objectName
        };
    } catch (err) {
        ctx.status = 500;
        ctx.body = err.toString();
    }
});

app.use(router.routes()).use(router.allowedMethods());

const PORT = 3009;
app.listen(PORT, () => {
    console.log(`Server running on port ${PORT}`);
});