Add chat message pagination

src/graphql/schema.graphql

@@ -341,7 +341,7 @@ type ChatRoom {
     members(first: Int=10, offset: Int=0): [User!]
 
     "return a specfic range of messages posted in the chat"
-    messages(first: Int = 10, offset: Int, containing: String): [ChatMessage]!
+    messages(first: Int = 10, offset: Int): [ChatMessage]!
 
     "id of the chat"
     id: ID!

src/lib/models/ChatRoom.ts

@@ -37,8 +37,10 @@ export class ChatRoom extends Model<ChatRoom> {
     /**
      * Returns the messages that have been sent in the chatroom
      */
-    public async messages(): Promise<ChatMessage[]> {
+    public async messages({first, offset}: {first: number, offset: number}): Promise<ChatMessage[]> {
-        return await this.$get("rMessages") as ChatMessage[];
+        const limit = first ?? 10;
+        offset = offset ?? 0;
+        return await this.$get("rMessages", {limit, offset}) as ChatMessage[];
     }
 
     /**