chats and messages

stubs/api/db.js

@@ -52,6 +52,10 @@ const getUsersChats = (userID) => {
     }
 }
 
+const addMessageToChat = (chat, msg) => {
+    chat.messages.push(msg);
+}
+
 const deleteChatFromDB = (firstID, secondID) => {
     const index = chats.findIndex(item =>
         (item.id1 === firstID && item.id2 === secondID) || (item.id1 === secondID && item.id2 === firstID));
@@ -67,4 +71,4 @@ const addChatToDB = (chat) => {
 
 
 module.exports = {users, chats, getUserFromDB, getChatFromDB, addUserToDB,
-    deleteUserFromDB, addChatToDB, deleteChatFromDB, getUsersChats}
+    deleteUserFromDB, addChatToDB, deleteChatFromDB, getUsersChats, addMessageToChat}