Epic/hwsc-app-gateway-svc ShareDocument

[faraonc]

Let us say Chrome(User) wants to share a Document. At this point Chrome has the User object already.

1. Chrome calls app-gateway-svc's ListUsers.
2. app-gateway-svc calls user-svc's ListUsers.
3. user-svc returns a list of users to app-gateway-svc
4. app-gateway-svc returns a list of users
5. Chrome picks the users he/she wants to share a document(document name goes with the callTypeName)
6. Chrome calls app-gateway-svc's ShareDocument with the following:
   message AppGatewayRequest{
   hwsc.User user = N; //this is not a complete User object, it may only have uuid
   hwsc.Document doc = N; //this is not a complete Document object, it may only have duid
   repeated string uuids_to_share_doc
   }
7. app-gateway-svc calls user-svc's ShareDocument with the following:

message UserRequest {
    User user = 1;
    string duid = 2;
    repeated string uuids_to_share_duid = 3;
}

8. user-svc's ShareDocument has to do the following:
   1. GetUser
   2. Modify themap<string, UserDocumentMetadata > user_documents = 7
   3. UpdateUser
   4. Traverse and GetUser each friend fromuuids_to_share_doc in UserRequest.
   5. Modify each friend's map<string, UserFriendMetadata> shared_to_me = 8
   6. UpdateUser for each friend

message User {
    string uuid = 1;
    string first_name = 2;
    string last_name = 3;
    string email = 4;
    string password = 5;
    string organization = 6;
    // Key = duid in string
    map<string, UserDocumentMetadata > user_documents = 7;
    // Key = friend's uuid
    map<string, UserFriendMetadata> shared_to_me = 8;

9. user-svc returns the updated User who shared the document to app-gateway-svc.
10. app-gateway-svc returns the User to Chrome.