Mobile Chat Service

Build a mobile chat service that will facilitate person to person messaging. Many to One messaging in a live stream. Purchasing, storing, sending and receiving "stickers' Java based - prefer to use Atmosphere framework ([login to view URL]) - P2P functionality (one to one) - Group Functionality (many to many) - Many to One Instream Functionality (Multiple people can chat with the Broadcaster during live video) - A mechanism to prioritize ability to chat based on status level and/or total amount tipped (spent) - frontend mobile-app integration provided as library/sdk - demo frontend/client on mobile - ability to save/store chat history in a local database from backend (use postgres) by user and timestamp - ability to adjust prioritization parameters for a given chat session based on per-user parameters (supplied when user joins chat) - block/mute users - kick users out (via command line/api?) - json-based, utf8 message/protocol type between backend and clients - call external API to notify recipient of message if not already online in chat (to be provided by us) - pictures/video upload o process pictures (rotate/resize/rescale as needed) o process videos (rotate/resize/rescale/transcode to standard video format (mp4/h.264/AC3) o upload to Amazon S3 for storage after processing