API_endpoints.txt

API endpoints required 
8.  POST        /signup                                     -
9.  POST        /login                                      -
1.  GET         /user/:username                             -   user details
2.  GET         /user/:id                                   -   user details with conversations(without messages)   
3.  GET         /user/:id/conversation/:id                  -   conversation with all messages(wrt to a particular user) and users
4.  PATCH       /user/:id/conversation/:id/message/:id/     -   Mark a message seen for this user(although this will be done by sockets)
6.  DELETE      /user/:id/conversation/:id/message/:id      -   Delete a message for this particular user
13. POST        /user/:id/add                               -   Add a user
5.  GET         /conversation/:id/message/:id/seen          -   User[] | Get all users who have seen a message
7.  DELETE      /conversation/:id/message/:id               -   Delete a message for all users in this conversation
11. POST        /conversation/:id/                          -   Create a conversation
12. POST        /conversation/:id/message                   -   Add a message to a conversation
10. POST        /conversation/:id/join                      -   Add a user to a conversation
10. POST        /conversation/:id/add                       -   Add a user to a conversation
13. POST        /conversation/:id/leave                     -   Remove a user from a conversation


Socket events
1.  seen    :   Mark a message seen for a particular user
2.  delete  :   Mark a message deleted for all users(In this case we also need to propogate to other online users) or a particular user

Chat app has
Feature #0  :    Signup                             [X]
Feature #1  :    Add people                         [ ] 
Feature #2  :    Send messages to people            [ ]    
                -   DM
                -   Group Chat
Feature #3  :   Last seen of users
Feature #4  :   Mark a message seen and/or deleted


POSTGRES
1.  Create user - create user supadmin with password 'suppass';
2.  Create database - create database moodb;
3.  Create table - 
4.  Linking a user to a db - grant all privileges on database sup to supadmin;