GDocs2Dropbox_WebApp.txt

Rails (or Node.js) Web App for syncing data folders between Google Docs and Dropbox. No desktop client needed.

- OAuth (a must!)
- Dropbox API:
  + https://www.dropbox.com/developers/releases (OAuth)
  + http://github.com/riscfuture/dropbox (OAuth)
- Google Docs GData API:
  + http://code.google.com/apis/gdata/articles/gdata_on_rails.html (OAuth)
  + http://cookingandcoding.com/2010/04/28/gdocs4ruby-access-google-docs-api-with-ruby/
- "Google Docs" folder, be able to rename it
- Choose which folders to sync (from GDocs ---to--> Dropbox), even all items
- Synchronization and tracking changes:
  + Cron both services
  + Push Notifications (Available in GDocs/Dropbox?)
- Size limit (bandwidth/storage issues)

Logic

- Track changes in GDocs, download new-files/diffs and upload to Dropbox
- Validate both files (MD5, filesize, date)

Steps

- GData API (to a server temp folder)
  + Check filesize limits
  + Downloading/Uploading new files
  + Downloading/Uploading changes logic
  + Corroborate downloaded/uploaded file checksum for integrity
- Dropbox API
  + Check filesize limits
  + Downloading/Uploading new files
  + Downloading/Uploading changes logic
  + Corroborate downloaded/uploaded file checksum for integrity
- Join Dropbox and GData functionality
- Web App functionality
  + Interface
  + User signup
  + OAuth both services
  + Activity Feed