fix db function naming, connections query, and nil map init

wsServer.go

@@ -77,21 +77,16 @@ func sendToAllMessageCloseIfTimeout(message *map[string]any) {
 	}
 }
 
-func WsSendToGroup(ctx context.Context, groupId uint32, senderId uint32, message string) error {
-	group, err := CacheGetGroup(groupId)
-	if err != nil {
-		return errors.New("group invalid")
-	}
-
-	sender, err := CacheGetUserById(senderId)
-	if err != nil {
-		sender = &User{Id: senderId}
-		err = DbUserSetById(ctx, sender)
-		if err != nil {
-			return errors.New("non existing sender")
-		}
+func WsSendToUser(from *User, to *User, message string) {
+	var msg = map[string]any{
+		"type":    WsMessageToUserFrom(DirectMessage_),
+		"from":    from.Id,
+		"content": message,
 	}
+	sendMessageCloseIfTimeout(from, &msg)
+}
 
+func WsSendToGroup(group *Group, sender *User, message string) error {
 	for groupUserId := range group.Users {
 		groupUser, err := CacheGetUserById(groupUserId)
 		if err != nil || groupUser.Id == sender.Id {
@@ -99,9 +94,9 @@ func WsSendToGroup(ctx context.Context, groupId uint32, senderId uint32, message
 		}
 
 		var msg = map[string]any{
-			"from":    "group",
-			"group":   group.Id,
-			"sender":  sender.Name,
+			"type":    WsMessageToUserFrom(Group_),
+			"from":    group.Id,
+			"sender":  sender.Id,
 			"content": message,
 		}
 		sendMessageCloseIfTimeout(groupUser, &msg)
@@ -118,7 +113,7 @@ func handleUnauthenticatedMessage(ctx context.Context, user *User, userMessage *
 	token, ok := (*userMessage)["token"].(string)
 	if !ok {
 		var msg = map[string]any{
-			"from":  "server",
+			"type":  WsMessageToUserFrom(Server_),
 			"error": "no token in message",
 		}
 		sendMessageCloseIfTimeout(user, &msg)
@@ -128,7 +123,7 @@ func handleUnauthenticatedMessage(ctx context.Context, user *User, userMessage *
 	userId, err := TokenValidateGetId(token)
 	if err != nil {
 		var msg = map[string]any{
-			"from":  "server",
+			"type":  WsMessageToUserFrom(Server_),
 			"error": "invalid token",
 		}
 		sendMessageCloseIfTimeout(user, &msg)
@@ -137,28 +132,12 @@ func handleUnauthenticatedMessage(ctx context.Context, user *User, userMessage *
 
 	userFromCache, err := CacheGetUserById(userId)
 	if err != nil {
-		dbUser := &User{Id: userId}
-		err = DbUserSetByIdWithoutGroupsConnections(ctx, dbUser)
-		if err != nil {
-			var msg = map[string]any{
-				"from":  "server",
-				"error": "invalid user data",
-			}
-			sendMessageCloseIfTimeout(user, &msg)
-			return false
+		var msg = map[string]any{
+			"type":  WsMessageToUserFrom(Server_),
+			"error": "user not found",
 		}
-		err = DbUserSetGroups(ctx, dbUser)
-		if err != nil {
-			var msg = map[string]any{
-				"from":  "server",
-				"error": "invalid user data",
-			}
-			sendMessageCloseIfTimeout(user, &msg)
-			return false
-		}
-		dbUser.WsConn = user.WsConn
-		CacheSaveUser(dbUser)
-		userFromCache = dbUser
+		sendMessageCloseIfTimeout(user, &msg)
+		return false
 	}
 
 	userFromCache.WsConn = user.WsConn
@@ -169,10 +148,19 @@ func handleUnauthenticatedMessage(ctx context.Context, user *User, userMessage *
 		if err != nil {
 			dbGroup := &Group{Id: groupId}
 
-			err = DbGroupSetById(ctx, dbGroup)
+			err = DbGroupGetById(ctx, dbGroup)
 			if err != nil {
 				var msg = map[string]any{
-					"from":  "server",
+					"type":  "server",
+					"error": "invalid user data",
+				}
+				sendMessageCloseIfTimeout(user, &msg)
+				return false
+			}
+			err = DbGroupGetMembers(ctx, dbGroup)
+			if err != nil {
+				var msg = map[string]any{
+					"type":  "server",
 					"error": "invalid user data",
 				}
 				sendMessageCloseIfTimeout(user, &msg)