tmoon8730 / jawapp Goto Github PK

This is a feature that is present in Google Hangouts and not really any other IM clients that I am aware of. Basically, there is a small indicator on a message that is the last message read by each user. Currently, this feature is in development in the JawWeb project and the database schema has been developed. Below is a snapshot of the scheme for the /currentUsers database point.

{
  "User 1" : {
    "lastMsgKey" : "-KjJTC0bOY6TWP0W54kE",
    "name" : "User 1",
    "photoUrl" : "/images/profile_placeholder.png"
  },
  "User 2" : {
    "lastMsgKey" : "-KjL4aYTEFVQPCKaL1Sm",
    "name" : "User 2",
    "photoUrl" : "/images/profile_placeholder.png",
    "present" : true
  },
  "User 3" : {
    "lastMsgKey" : "-KjL4aYTEFVQPCKaL1Sm",
    "name" : "User 3r",
    "photoUrl" : "/images/profile_placeholder.png",
    "present" : true
  }
}

The lastMsgKey matches the ID of the last message read by the user with the display name name. The present flag is set when a user is to true when connected and set to false when disconnected.

For the Android app there needs to be three things:

1. Update the lastMsgKey for a user when messages are read
2. Update the message itself with indicators for users
3. Update the present flag on connect and disconnects

It would be interesting if we could display videos directly in the chat instead of having to open the link like most other instant messaging clients.

We need a way of encrypting the text data stored in Firebase. It would be ideal to have a centralized way of doing this across all the platforms (at this time JawWeb and JawAndroid).

AES-256 algorithms seem to be the most popular these days so that may be a good algorithm to use.

Tasks:

1. Research specific algorithm to implement

2. Determine method of generating keys / initial vectors in a common method across platforms

3. Implement encryption method on JawAndroid

4. Implement encryption method on JawWeb