Can mark conversation messages as seen

src/helpers/ConversationsHelper.ts

@@ -258,6 +258,25 @@ export class ConversationsHelper {
 		})).map(m => this.DBToConversationMessage(convID, m));
 	}
 
+	/**
+	 * Mark the user has seen the last messages of the conversation
+	 * 
+	 * @param convID Target conversation ID
+	 * @param userID Target user ID
+	 */
+	public static async MarkUserSeen(convID: number, userID: number) {
+		await DatabaseHelper.UpdateRows({
+			table: USERS_TABLE,
+			where: {
+				conv_id: convID,
+				user_id: userID
+			},
+			set: {
+				saw_last_message: 1
+			}
+		});
+	}
+
 	/**
 	 * Get the list of members of a conversation
 	 *