Write a function in your backend or client application to upload files.

Make sure the function adds the version identifier to the file name before uploading.

Example code snippet:

```javascript
const { data, error } = await supabase
.storage
.from('your-bucket-name')
.upload('folder-name/file_v1.txt', file)
```

Implement functionality to list all versions of a file.

Use the list function to fetch files from the storage bucket:

```javascript
const { data, error } = await supabase
.storage
.from('your-bucket-name')
.list('folder-name')
```

Use the file name convention to filter and retrieve the specific version.

Create a database table in Supabase to keep track of file versions and metadata.

Store details like file name, version, upload date, etc.

Example table schema:

```sql
CREATE TABLE file_versions (
id SERIAL PRIMARY KEY,
file_name TEXT NOT NULL,
version TEXT NOT NULL,
upload_date TIMESTAMP DEFAULT NOW()
);
```

Use HTTP triggers or cloud functions to automate tasks like archiving old versions.

Create a scheduled function to clean up or archive old versions based on your retention policy.

```javascript
const oldVersions = await getOldVersions()

oldVersions.forEach(async (file) => {
await supabase
.storage
.from('your-bucket-name')
.remove([file.path])
})
```

Implement a rollback feature to revert to any previous version.

Write a function to copy the content of the old version and upload it as the current version.

```javascript
const { data, error } = await supabase
.storage
.from('your-bucket-name')
.move('folder-name/file_v1.txt', 'folder-name/file_current.txt')
```