Seedbox Style Torrent Downloader Required

Develop a custom torrent downloader with a web-based API that will be used as a seedbox-style service offered by our file sharing website. This will consist of three items: - Web based API (adding/listing/controlling torrents) - A way of calling a script once a torrent has completed - Torrent client (third party libraries are fine as long as they're open and scale well) ## Deliverables It will need to meet the following guidelines at a minimum: - API wrapper needs to be written in Linux-friendly web language - PHP/Ruby/etc. - API wrapper needs to be able to (per user): list torrents currently being downloaded, enable files/folders to be selected for download when adding a torrent, enable cancellation/pausing of torrents, enable us to set limits (x number of concurrent torrents at a time, etc). - Needs to give us a config file to configure global limits (per-user bandwidth, concurrent uploads, paths, etc) - Support for multiple users (allowing the same file to be downloaded by more than one user at once separately, track who is downloading each file) The expected process flow is as follows: 1. User registers with our website 2. User adds a torrent URL into a form on our website 3. Form is submitted to Web based API, torrent gets downloaded, and a file list is returned to the user (json) 4. User selects the files/folders they want to download, and the information is posted back to the Web based API 5. Torrent client initializes the download 6. User can poll the status of the torrents in their queue, and pause/cancel them, etc. 7. Once a torrent has completed, either a script is called or the files are sent via HTTP Post to our upload servers 8. The local torrents are then deleted, upon confirmation of a successful transfer. We will be able to provide more information or clarification on the above points as required during or before development begins, and have technical staff on hand to discuss the finer points of integration with.