# How to Use Pre-Signed URL in Node.js with Stook

You can generate **pre-signed URLs** with the **AWS SDK for Node.js** to securely access or share objects stored in **Medianova Stook Object Storage**. Pre-signed URLs allow temporary access to your data without exposing credentials.

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### Prerequisites

* Node.js installed on your system
* AWS SDK for Node.js installed (`npm install aws-sdk`)
* Medianova Stook credentials:
  * **Access Key**
  * **Secret Key**
  * **Endpoint**

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### Example: Generate a Pre-Signed URL

```javascript
var AWS = require('aws-sdk');

var config = {
    s3ForcePathStyle: true,
};

var credentials = new AWS.SharedIniFileCredentials({
    profile: 'medianova'
});

AWS.config.credentials = credentials;
AWS.config.update(config);

var ep = new AWS.Endpoint('customername.mncdn.com');
var s3 = new AWS.S3({endpoint: ep});

var myBucket = 'bucket';
var myKey = 'mykey';
var signedUrlExpireSeconds = 60 * 5;

var url = s3.getSignedUrl('getObject', {
    Bucket: myBucket,
    Key: myKey,
    Expires: signedUrlExpireSeconds
});

console.log(url);
```

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### How It Works

1. Configure the AWS SDK with `s3ForcePathStyle`.
2. Use your Medianova credentials (via profile or direct configuration).
3. Define **bucket**, **object key**, and expiration time.
4. Call `getSignedUrl('getObject', {...})` to generate a URL.
5. Use or share the generated URL within its expiration time.

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### Troubleshooting / FAQ

* **Expired URL:** Adjust `Expires` value (e.g., `60*10` for 10 minutes).
* **Access denied:** Verify bucket policy and Stook credentials.
* **Invalid endpoint:** Ensure endpoint matches your Stook account.

***

### References

* [AWS SDK for Node.js Documentation](https://docs.aws.amazon.com/sdk-for-javascript/)