server.js

// server.js

const express = require('express');
const AWS = require('aws-sdk');
const cors = require('cors');
const path = require('path');

const app = express();
const PORT = 3000;

app.use(cors());
app.use(express.json());
app.use(express.static(__dirname));

const s3 = new AWS.S3({
  endpoint: 'https://storage.yandexcloud.net',
  accessKeyId: 'YCAJEHtdePFC8MCfONmONK5Tz',
  secretAccessKey: 'YCML7eke-Wy3YoXG9gHWbRRbQjq5fNq3ZE38EXMG',
  region: 'ru-central1',
  signatureVersion: 'v4'
});

const BUCKET_NAME = 'test-bucket-supa-unique';

app.post('/upload', (req, res) => {
    const { fileName } = req.body;

    if (!fileName) {
        return res.status(400).json({ error: 'fileName is required' });
    }

    const cleanFileName = fileName.replace(/[^a-zA-Z0-9._-]/g, '_');

    const params = {
        Bucket: BUCKET_NAME,
        Key: cleanFileName,
        Expires: 120,
        ContentType: 'application/octet-stream',
    };

    try {
        const uploadUrl = s3.getSignedUrl('putObject', params);

        console.log(`Сгенерирован URL для загрузки: ${cleanFileName}`);

        res.json({
            success: true,
            uploadUrl: uploadUrl,
            fileName: cleanFileName,
            expiresIn: '2 minutes'
        });
    } catch (error) {
        console.error('Error generating upload URL:', error);
        res.status(500).json({
            error: 'Failed to generate upload URL',
            details: error.message
        });
    }
});

app.get('/download/:fileName', (req, res) => {
    const { fileName } = req.params;

    const params = {
        Bucket: BUCKET_NAME,
        Key: fileName,
        Expires: 60
    };

    try {
        const downloadUrl = s3.getSignedUrl('getObject', params);
        console.log(`Сгенерирован URL для скачивания: ${fileName}`);
        res.redirect(303, downloadUrl);
    } catch (error) {
        console.error('Error generating download URL:', error);
        res.status(500).json({ error: 'Failed to generate download URL' });
    }
});

app.get('/list', async (req, res) => {
    try {
        const response = await s3.listObjectsV2({ Bucket: BUCKET_NAME }).promise();
        const files = response.Contents.map(item => ({
            name: item.Key,
            size: item.Size,
            lastModified: item.LastModified
        }));

        console.log(`Список файлов: ${files.length} файлов`);
        res.json({ files });
    } catch (error) {
        console.error('Error listing files:', error);
        res.status(500).json({
            error: 'Failed to list files',
            details: error.message
        });
    }
});

app.get('/health', async (req, res) => {
    try {
        await s3.headBucket({ Bucket: BUCKET_NAME }).promise();
        res.json({ status: 'OK', bucket: BUCKET_NAME });
    } catch (error) {
        res.status(500).json({ status: 'ERROR', error: error.message });
    }
});

app.get('/', (req, res) => {
    res.sendFile(path.join(__dirname, 'index.html'));
});

app.listen(PORT, () => {
    console.log(`
        Откройте: http://localhost:${PORT}
    `);
});