POC: send status notifications

proto/decentraland/social/friendships/friendships.proto

@@ -35,6 +35,10 @@ message User { string address = 1; }
 
 message Users { repeated User users = 1; }
 
+message UsersPresence {
+  repeated User online = 1;
+}
+
 message RequestResponse {
   User user = 1;
   int64 created_at = 2;
@@ -89,6 +93,33 @@ message Payload {
   optional string synapse_token = 1;
 }
 
+message Status {
+  enum StatusType {
+    ONLINE = 0;
+    OFFLINE = 1;
+  }
+  StatusType type = 1;
+}
+
+// For internal use only, subject to change.
+message StatusPayload {
+  // For internal use only, subject to change.
+  optional string synapse_token = 1;
+  // For internal use only, subject to change.
+  optional Status status = 2;
+}
+
+message StatusResponse {
+  oneof response {
+    Status status = 1;
+    InternalServerError internal_server_error = 2;
+    UnauthorizedError unauthorized_error = 3;
+    ForbiddenError forbidden_error = 4;
+    TooManyRequestsError too_many_requests_error = 5;
+    BadRequestError bad_request_error = 6;
+  }
+}
+
 message BadRequestError {
   string message = 1;
 }
@@ -105,6 +136,16 @@ message InternalServerError {
   string message = 1;
 }
 
+message UsersPresenceResponse {
+  oneof response {
+    UsersPresence presence = 1;
+    InternalServerError internal_server_error = 2;
+    UnauthorizedError unauthorized_error = 3;
+    ForbiddenError forbidden_error = 4;
+    TooManyRequestsError too_many_requests_error = 5;
+  }
+}
+
 message UsersResponse {
   oneof response {
     Users users = 1;
@@ -148,9 +189,16 @@ message SubscribeFriendshipEventsUpdatesResponse {
 }
 
 service FriendshipsService {
+
+  // Message to set yourself as online
+  rpc SetPresenceStatus(StatusPayload) returns (StatusResponse) {}
+
   // Get the list of friends for the authenticated user
   rpc GetFriends(Payload) returns (stream UsersResponse) {}
 
+  // Get the list of presence status of the friends for the authenticated user
+  rpc GetFriendsPresenceStatus(Payload) returns (stream UsersPresenceResponse) {}
+
   // Get the list of mutual friends between the authenticated user and the one in the parameter
   rpc GetMutualFriends(MutualFriendsPayload) returns (stream UsersResponse) {}