add new all command

db/db.go

@@ -11,6 +11,7 @@ import (
 
 type chatDTO struct {
 	ChatID int64    `bson:"chat_id"`
+	Users  []string `bson:"users"`
 }
 
 var cfg *config.Config
@@ -41,6 +42,10 @@ func AddChat(chatID int64) error {
 }
 
 func AddUserInChat(chatID int64, username string) error {
+	if username == "" {
+		return nil
+	}
+
 	if err := AddChat(chatID); err != nil {
 		return err
 	}
@@ -61,3 +66,20 @@ func AddUserInChat(chatID int64, username string) error {
 	)
 	return err
 }
+
+func GetUsers(chatID int64) ([]string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+
+	client, err := mongo.Connect(ctx, options.Client().ApplyURI(cfg.MongoURL))
+	if err != nil {
+		return nil, err
+	}
+
+	collection := client.Database(cfg.DBName).Collection(cfg.ChatsCollectionName)
+	chatDTO := &chatDTO{}
+	if err := collection.FindOne(ctx, bson.M{"chat_id": chatID}).Decode(chatDTO); err != nil {
+		return nil, err
+	}
+	return chatDTO.Users, err
+}

main.go

@@ -13,10 +13,7 @@ import (
 	"strings"
 )
 
-const (
+const tag = "@all"
-	tag      = "@all"
-	allUsers = "@vo13crabs @disconecto @v9gel @KeyM_v2 @k_ukolov @iamembarrassed @freel_Fedorov_Kirill @butinmv"
-)
 
 type Opts struct {
 	Token string `short:"t" long:"token" description:"Telegram api token"`
@@ -82,21 +79,22 @@ func run() {
 		chatID := update.Message.Chat.ID
 		username := update.Message.From.UserName
 
+		_ = db.AddUserInChat(chatID, username)
+
 		if strings.Contains(strings.ToLower(text), tag) {
-			_, _ = bot.Send(tgbot.NewMessage(chatID, allUsers))
+			users, _ := db.GetUsers(chatID)
+			_, _ = bot.Send(tgbot.NewMessage(chatID, "@"+strings.Join(users, " @")))
 		}
 
 		command := commands.Command(strings.Replace(text, opts.Name, "", 1))
 		switch command {
 		case commands.Start:
-			_, _ = bot.Send(tgbot.NewMessage(chatID, fmt.Sprintf("Здравствуйте, я Волтер (v1.1.0), ваш дворецкий (%d).", chatID)))
+			_, _ = bot.Send(tgbot.NewMessage(chatID, fmt.Sprintf("Здравствуйте, я Волтер (v1.2.0), ваш дворецкий (%d).", chatID)))
 			_ = db.AddChat(chatID)
 		case commands.Help:
 			_, _ = bot.Send(tgbot.NewMessage(chatID, "Вот что я умею:\n\n1) Позвать всех"))
 		case commands.Ping:
 			_, _ = bot.Send(tgbot.NewMessage(chatID, "pong"))
 		}
-
-		_ = db.AddUserInChat(chatID, username)
 	}
 }