Gestione utenti, admin. Eliminato multibot

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

src/barandaBot.go

@@ -19,8 +19,8 @@ func main() {
 
 	if cmdFlags.interactive {
 		mainMenu()
-	} else if cmdFlags.tokens != nil {
+	} else if cmdFlags.token != "" {
-		err = addBotTokens(cmdFlags.tokens)
+		err = setBotToken(cmdFlags.token)
 		if err == ErrAddToken {
 			log.Printf("Error in adding bot tokens: %v", err)
 		}

src/manageAdmin.go

@@ -0,0 +1,164 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/dixonwille/wmenu"
+	tb "gopkg.in/tucnak/telebot.v2"
+)
+
+func addBotAdmins(newAdminIDs []string) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	errNum := 0
+	if newAdminIDs == nil && cmdFlags.interactive {
+		fmt.Println("Add the new admin IDs, comma-separated:")
+		reader := bufio.NewReader(os.Stdin)
+		line, err := reader.ReadString('\n')
+		if err != nil {
+			log.Printf("Error in reading new admin IDs: %v", err)
+			return ErrStdRead
+		}
+		newAdminIDs = strings.Split(line, ",")
+	}
+	for _, newAdminID := range newAdminIDs {
+		err := addBotAdmin(newAdminID)
+		if err != nil {
+			errNum++
+			log.Printf("Error in adding new admin ID %s: %v", newAdminID, err)
+		}
+	}
+	if errNum == len(newAdminIDs) {
+		return ErrAddAdmin
+	}
+	return nil
+}
+
+func removeBotAdmins() error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	botAdmins, err := redisClient.SMembers(adminSet).Result()
+	if err != nil {
+		log.Printf("Couldn't retrieve admins: %v", err)
+		return ErrRedisRetrieveSet
+	}
+	menu := wmenu.NewMenu("Select the admin(s) you want to remove:")
+	menu.AllowMultiple()
+	menu.LoopOnInvalid()
+	menu.Action(func(opts []wmenu.Opt) error {
+		var returnErr error
+		for _, opt := range opts {
+			if opt.Value == nil {
+				log.Println("Couldn't remove admin: nil token")
+				returnErr = ErrNilPointer
+			} else {
+				err := removeBotAdmin(opt.Value.(int))
+				if err != nil {
+					log.Printf("Couldn't remove bot admin: %v", err)
+				}
+			}
+		}
+		return returnErr
+	})
+	//for _, token := range tokens {
+	for _, botAdmin := range botAdmins {
+		adminID, err := strconv.Atoi(botAdmin)
+		if err != nil {
+			log.Printf("Error converting adminID from string to int: %v", err)
+			return ErrAtoiConv
+		}
+		adminInfo, err := getUserInfo(adminID)
+		menu.Option(adminInfo.Username+": "+adminInfo.FirstName+" "+adminInfo.LastName, adminID, false, nil)
+	}
+	err = menu.Run()
+	if err != nil {
+		log.Printf("Error in removeToken menu: %v", err)
+		return ErrRemoveAdmin
+	}
+	return nil
+}
+
+func addBotAdmin(newAdminID string) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	adminID := strings.TrimSpace(newAdminID)
+	matched, err := regexp.MatchString("^\\d+$", adminID)
+	if err != nil {
+		log.Printf("Error in parsing admin ID: %v", err)
+		return ErrIDParsing
+	}
+	if !matched {
+		return ErrIDInvalid
+	}
+
+	ID, err := strconv.Atoi(adminID)
+	if err != nil {
+		log.Printf("Error converting user ID: %v", err)
+		return ErrAtoiConv
+	}
+	chat, err := bot.ChatByID(adminID)
+	if err != nil {
+		log.Printf("Error retriving chat by id: %v", err)
+		return ErrChatRetrieve
+	}
+	if chat.Type != tb.ChatPrivate {
+		log.Printf("Admin must be a user!")
+		return ErrAddAdmin
+	}
+	isUser, err := isUser(ID)
+	if err != nil {
+		log.Printf("Error checking if ID is bot user: %v", err)
+		return ErrAddAdmin
+	}
+	if !isUser {
+		err = addUser(&tb.User{int(chat.ID), chat.FirstName, chat.LastName, chat.Username})
+		if err != nil {
+			log.Printf("Error adding user: %v", err)
+			return ErrAddUser
+		}
+	}
+	err = redisClient.SAdd(adminSet, adminID).Err()
+	if err != nil {
+		log.Printf("Error in adding new admin ID: %v", err)
+		return ErrRedisAddSet
+	}
+
+	err = authorizeUser(ID, true)
+	if err != nil {
+		log.Printf("Error in adding new admin ID in authorized users: %v", err)
+		return ErrAddAuthUser
+	}
+	user, err := getUserInfo(ID)
+	if err != nil {
+		log.Printf("Error getting user info: %v", err)
+		return ErrGetUser
+	}
+	err = sendMessage(user, "Sei stato aggiunto come amministratore del BarandaBot")
+	if err != nil {
+		log.Printf("Error sending message to new admin: %v", err)
+		return ErrSendMsg
+	}
+
+	return nil
+}
+
+func removeBotAdmin(adminID int) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	err := redisClient.SRem(adminSet, strconv.Itoa(adminID)).Err()
+	if err != nil {
+		log.Printf("Error removing admin from set: %v", err)
+		return ErrRedisRemSet
+	}
+	return nil
+}

src/manageBot.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strings"
+
+	tb "gopkg.in/tucnak/telebot.v2"
+)
+
+func setBotToken(newToken string) error {
+	var err error
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	if newToken == "" && cmdFlags.interactive {
+		fmt.Println("Add the new token:")
+		reader := bufio.NewReader(os.Stdin)
+		newToken, err = reader.ReadString('\n')
+		if err != nil {
+			log.Printf("Error in reading new bot token: %v", err)
+			return ErrStdRead
+		}
+	}
+	token := strings.TrimSpace(newToken)
+	matched, err := regexp.MatchString("^\\d+\\:([0-9]|[A-z]|\\_|\\-)+", token)
+	if err != nil {
+		log.Printf("Error in parsing bot token: %v", err)
+		return ErrTokenParsing
+	}
+	if !matched {
+		return ErrTokenInvalid
+	}
+
+	err = redisClient.Set(botToken, token, 0).Err()
+	if err != nil {
+		log.Printf("Error in adding new bot token: %v", err)
+		return ErrRedisAddSet
+	}
+
+	return nil
+}
+
+func getBotToken() (string, error) {
+	if redisClient == nil {
+		return "", ErrNilPointer
+	}
+	token, err := redisClient.Get(botToken).Result()
+	if err != nil {
+		log.Printf("Couldn't retrieve bot token: %v", err)
+		return "", ErrRedisRetrieveSet
+	}
+	if token == "" {
+		fmt.Println("No bot token found.")
+		err := setBotToken("")
+		if err != nil {
+			log.Printf("Couldn't add new bot tokens: %v", err)
+			return "", ErrAddToken
+		}
+	}
+
+	return token, nil
+}
+
+func addBotInfo(botToken string, bot *tb.Bot) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	jsonBot, err := json.Marshal(&bot)
+	if err != nil {
+		log.Printf("Error marshalling bot info: %v", err)
+		return ErrJSONMarshall
+	}
+	err = redisClient.HSet(botHash, botToken, string(jsonBot)).Err()
+	if err != nil {
+		log.Printf("Error in adding bot info: %v", err)
+		return ErrRedisAddHash
+	}
+
+	return nil
+}
+
+func removeBotInfo(botToken string) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	err := redisClient.HDel(botHash, botToken).Err()
+	if err != nil {
+		log.Printf("Error in removing bot info: %v", err)
+		return ErrRedisDelHash
+	}
+	return nil
+}

src/manageUser.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"strconv"
+
+	tb "gopkg.in/tucnak/telebot.v2"
+)
+
+func addUser(user *tb.User) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	err := redisClient.SAdd(userSet, user.ID).Err()
+	if err != nil {
+		log.Printf("Error in adding user ID: %v", err)
+		return ErrRedisAddSet
+	}
+	jsonUser, err := json.Marshal(&user)
+	if err != nil {
+		log.Printf("Error in marshalling user to json: %v", err)
+		return ErrJSONMarshall
+	}
+	err = redisClient.HSet(userHash, strconv.Itoa(user.ID), jsonUser).Err()
+	if err != nil {
+		log.Printf("Error adding user info in hash: %v", err)
+		return ErrRedisAddHash
+	}
+
+	return nil
+}
+
+func isUser(userID int) (bool, error) {
+	if redisClient == nil {
+		return false, ErrNilPointer
+	}
+	user, err := redisClient.SIsMember(userSet, strconv.Itoa(userID)).Result()
+	if err != nil {
+		log.Printf("Error checking if ID is bot user: %v", err)
+		return false, ErrRedisCheckSet
+	}
+	return user, nil
+}
+
+func getUserInfo(userID int) (*tb.User, error) {
+	if redisClient == nil {
+		return nil, ErrNilPointer
+	}
+	user, err := redisClient.HGet(userHash, strconv.Itoa(userID)).Result()
+	if err != nil {
+		log.Printf("Error retriving user info from hash: %v", err)
+		return nil, ErrRedisRetrieveHash
+	}
+	jsonUser := &tb.User{}
+	err = json.Unmarshal([]byte(user), jsonUser)
+	if err != nil {
+		log.Printf("Error unmarshalling user info: %v", err)
+		return nil, ErrJSONUnmarshall
+	}
+	return jsonUser, nil
+}
+
+func isAuthrizedUser(userID int) (bool, error) {
+	if redisClient == nil {
+		return false, ErrNilPointer
+	}
+	auth, err := redisClient.SIsMember(authUserSet, strconv.Itoa(userID)).Result()
+	if err != nil {
+		log.Printf("Error checking if user is authorized: %v", err)
+		return false, ErrRedisCheckSet
+	}
+	return auth, nil
+}
+
+func authorizeUser(userID int, authorized bool) error {
+	if redisClient == nil {
+		return ErrNilPointer
+	}
+	if authorized {
+		err := redisClient.SAdd(authUserSet, strconv.Itoa(userID)).Err()
+		if err != nil {
+			log.Printf("Error adding token to set: %v", err)
+			return ErrRedisAddSet
+		}
+	} else {
+		err := redisClient.SRem(authUserSet, strconv.Itoa(userID)).Err()
+		if err != nil {
+			log.Printf("Error removing token from set: %v", err)
+			return ErrRedisRemSet
+		}
+	}
+	return nil
+}

src/redisAPI.go

@@ -1,27 +1,19 @@
 package main
 
 import (
-	"bufio"
-	"encoding/json"
 	"errors"
-	"fmt"
 	"log"
-	"os"
-	"regexp"
-	"strconv"
-	"strings"
 
-	"github.com/dixonwille/wmenu"
 	"github.com/go-redis/redis"
-	tb "gopkg.in/tucnak/telebot.v2"
 )
 
 const (
-	tkSet       = "botToken"
+	botToken    = "botToken"
 	botHash     = "botInfo"
 	userSet     = "userID"
 	userHash    = "userInfo"
 	authUserSet = "authUser"
+	adminSet    = "adminID"
 )
 
 var redisClient *redis.Client
@@ -33,24 +25,34 @@ var (
 	ErrRedisAddSet = errors.New("redis: couldn't add key in set")
 	//ErrRedisRemSet is thrown when it's not possible to remove a key from a given set
 	ErrRedisRemSet = errors.New("redis: couldn't remove key from set")
-	//ErrRedisRetriveSet is thrown when it's not possible to retrive keys from a set
+	//ErrRedisRetrieveSet is thrown when it's not possible to retrieve keys from a set
-	ErrRedisRetriveSet = errors.New("redis: couldn't retrive keys from set")
+	ErrRedisRetrieveSet = errors.New("redis: couldn't retrieve keys from set")
 	//ErrRedisCheckSet is thrown when it's not possible to check if a key is in a given set
 	ErrRedisCheckSet = errors.New("redis: couldn't check if key is in set")
 	//ErrRedisAddHash is thrown when it's not possible to add a key in a hash
 	ErrRedisAddHash = errors.New("redis: couldn't add key in hash")
 	//ErrRedisDelHash is thrown when it's not possible to remove a key from a hash
 	ErrRedisDelHash = errors.New("redis: couldn't remove key from hash")
+	//ErrRedisRetrieveHash is thrown when it's not possible to retrieve a key from a hash
+	ErrRedisRetrieveHash = errors.New("redis: couldn't retrieve key from hash")
 	//ErrTokenParsing is thrown when it's not possible to parse the bot token
 	ErrTokenParsing = errors.New("botToken: cannot parse token")
 	//ErrTokenInvalid is thrown when the string parsed isn't a valid telegram bot token
 	ErrTokenInvalid = errors.New("botToken: string isn't a valid telegram bot token")
+	//ErrIDParsing is thrown when it's not possible to parse the user ID
+	ErrIDParsing = errors.New("userID: cannot parse ID")
+	//ErrIDInvalid is thrown when the string parsed isn't a valid telegram user ID
+	ErrIDInvalid = errors.New("userID: string isn't a valid telegram user ID")
 	//ErrAddToken is thrown when one or more bot token hasn't been added
 	ErrAddToken = errors.New("couldn't add one or more tokens")
-	//ErrRemoveToken is thrown when one or more bot tokens hasn't been removed
+	//ErrAddUser is thrown when one or more user hasn't been added
-	ErrRemoveToken = errors.New("couldn't remove one or more tokens")
+	ErrAddUser = errors.New("couldn't add one or more users")
-	//ErrJSONMarshall is thrown when it's impossible to marshall a given struct
+	//ErrAddAdmin is thrown when one or more admin IDs hasn't been added
-	ErrJSONMarshall = errors.New("json: couldn't marshall struct")
+	ErrAddAdmin = errors.New("couldn't add one or more admins")
+	//ErrAddAuthUser is thrown when one or more users cannot be authorized
+	ErrAddAuthUser = errors.New("couldn't authorize one or more users")
+	//ErrGetUser is thrown when user info couldn't be retrieven
+	ErrGetUser = errors.New("couldn't retrieve user info")
 )
 
 func redisInit(addr string, pwd string, db int) error {
@@ -66,224 +68,3 @@ func redisInit(addr string, pwd string, db int) error {
 	}
 	return nil
 }
-
-func addBotToken(newToken string) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	token := strings.TrimSpace(newToken)
-	matched, err := regexp.MatchString("^\\d+\\:([0-9]|[A-z]|\\_|\\-)+", token)
-	if err != nil {
-		log.Printf("Error in parsing bot token: %v", err)
-		return ErrTokenParsing
-	}
-	if !matched {
-		return ErrTokenInvalid
-	}
-
-	err = redisClient.SAdd(tkSet, token).Err()
-	if err != nil {
-		log.Printf("Error in adding new bot token: %v", err)
-		return ErrRedisAddSet
-	}
-
-	return nil
-}
-
-func addBotTokens(newTokens []string) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	errNum := 0
-	if newTokens == nil && cmdFlags.interactive {
-		fmt.Println("Add the new tokens, comma-separated:")
-		reader := bufio.NewReader(os.Stdin)
-		line, err := reader.ReadString('\n')
-		if err != nil {
-			log.Printf("Error in reading new bot tokens: %v", err)
-			return ErrStdRead
-		}
-		newTokens = strings.Split(line, ",")
-	}
-	for _, newToken := range newTokens {
-		err := addBotToken(newToken)
-		if err != nil {
-			errNum++
-			log.Printf("Error in adding new bot token %s: %v", newToken, err)
-		}
-	}
-	if errNum == len(newTokens) {
-		return ErrAddToken
-	}
-	return nil
-}
-
-func removeBotToken(token string) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	err := redisClient.SRem(tkSet, token).Err()
-	if err != nil {
-		log.Printf("Error in removing bot token %s: %v", token, err)
-		return ErrRemoveToken
-	}
-	return nil
-}
-
-func removeBotTokens() error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	//tokens, err := redisClient.SMembers(tkSet).Result()
-	botsInfo, err := redisClient.HGetAll(botHash).Result()
-	if err != nil {
-		log.Printf("Couldn't retrive bot info: %v", err)
-		return ErrRedisRetriveSet
-	}
-	menu := wmenu.NewMenu("Select the token(s) you want to remove:")
-	menu.AllowMultiple()
-	menu.LoopOnInvalid()
-	menu.Action(func(opts []wmenu.Opt) error {
-		var returnErr error
-		for _, opt := range opts {
-			if opt.Value == nil {
-				log.Println("Couldn't remove bot: nil token")
-				returnErr = ErrNilPointer
-			} else {
-				err := removeBotToken(opt.Value.(string))
-				if err != nil {
-					log.Printf("Couldn't remove bot token: %v", err)
-				}
-				err = removeBotInfo(opt.Value.(string))
-				if err != nil {
-					log.Printf("Couldn't remove bot info: %v", err)
-				}
-			}
-		}
-		return returnErr
-	})
-	//for _, token := range tokens {
-	for token, jsonBotInfo := range botsInfo {
-		botInfo := &tb.Bot{}
-		json.Unmarshal([]byte(jsonBotInfo), &botInfo)
-		menu.Option(botInfo.Me.Username, token, false, nil)
-	}
-	err = menu.Run()
-	if err != nil {
-		log.Printf("Error in removeToken menu: %v", err)
-		return ErrRemoveToken
-	}
-	return nil
-}
-
-func getBotTokens() ([]string, error) {
-	if redisClient == nil {
-		return nil, ErrNilPointer
-	}
-	tkNum, err := redisClient.SCard(tkSet).Result()
-	if err != nil {
-		log.Printf("Couldn't retrive number of bot tokens: %v", err)
-		return nil, ErrRedisRetriveSet
-	}
-	if tkNum == 0 {
-		fmt.Println("No bot token found.")
-		err := addBotTokens(nil)
-		if err != nil {
-			log.Printf("Couldn't add new bot tokens: %v", err)
-			return nil, ErrAddToken
-		}
-	}
-
-	tokens, err := redisClient.SMembers(tkSet).Result()
-	if err != nil {
-		log.Printf("Couldn't retrive bot tokens: %v", err)
-		return nil, ErrRedisRetriveSet
-	}
-
-	return tokens, nil
-}
-
-func addBotInfo(botToken string, bot *tb.Bot) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	jsonBot, err := json.Marshal(&bot)
-	if err != nil {
-		log.Printf("Error marshalling bot info: %v", err)
-		return ErrJSONMarshall
-	}
-	err = redisClient.HSet(botHash, botToken, string(jsonBot)).Err()
-	if err != nil {
-		log.Printf("Error in adding bot info: %v", err)
-		return ErrRedisAddHash
-	}
-
-	return nil
-}
-
-func removeBotInfo(botToken string) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	err := redisClient.HDel(botHash, botToken).Err()
-	if err != nil {
-		log.Printf("Error in removing bot info: %v", err)
-		return ErrRedisDelHash
-	}
-	return nil
-}
-
-func addUser(user *tb.User) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	err := redisClient.SAdd(userSet, user.ID).Err()
-	if err != nil {
-		log.Printf("Error in adding user ID: %v", err)
-		return ErrRedisAddSet
-	}
-	jsonUser, err := json.Marshal(&user)
-	if err != nil {
-		log.Printf("Error in marshalling user to json: %v", err)
-		return ErrJSONMarshall
-	}
-	err = redisClient.HSet(userHash, strconv.Itoa(user.ID), jsonUser).Err()
-	if err != nil {
-		log.Printf("Error adding user info in hash: %v", err)
-		return ErrRedisAddHash
-	}
-
-	return nil
-}
-
-func isAuthrizedUser(userID int) (bool, error) {
-	if redisClient == nil {
-		return false, ErrNilPointer
-	}
-	auth, err := redisClient.SIsMember(authUserSet, strconv.Itoa(userID)).Result()
-	if err != nil {
-		log.Printf("Error checking if user is authorized: %v", err)
-		return false, ErrRedisCheckSet
-	}
-	return auth, nil
-}
-
-func authorizeUser(userID int, authorized bool) error {
-	if redisClient == nil {
-		return ErrNilPointer
-	}
-	if authorized {
-		err := redisClient.SAdd(authUserSet, strconv.Itoa(userID)).Err()
-		if err != nil {
-			log.Printf("Error adding token to set: %v", err)
-			return ErrRedisAddSet
-		}
-	} else {
-		err := redisClient.SRem(authUserSet, strconv.Itoa(userID)).Err()
-		if err != nil {
-			log.Printf("Error removing token from set: %v", err)
-			return ErrRedisRemSet
-		}
-	}
-	return nil
-}

src/sys.go

@@ -17,7 +17,7 @@ type flags struct {
 	redisAddr   string
 	redisPwd    string
 	redisDB     int
-	tokens      stringSlice
+	token       string
 }
 
 var cmdFlags flags
@@ -28,6 +28,14 @@ var (
 	ErrStdRead = errors.New("stdin: couldn't read string from stdin")
 	//ErrMainMenu is thrown when a menu couldn't be started
 	ErrMainMenu = errors.New("menu: couldn't start menu")
+	//ErrAtoiConv is thrown when a string couldn't be converted to int
+	ErrAtoiConv = errors.New("atoi: couldn't convert string to int")
+	//ErrJSONMarshall is thrown when it's impossible to marshall a given struct
+	ErrJSONMarshall = errors.New("json: couldn't marshall struct")
+	//ErrJSONUnmarshall is thworn when it's impossible to unmarshall a given struct
+	ErrJSONUnmarshall = errors.New("json: couldn't unmarshall struct")
+	//ErrRemoveAdmin is thrown when it's impossible to remove an admin
+	ErrRemoveAdmin = errors.New("menu: cannot remove admin")
 )
 
 func (i *stringSlice) String() string {
@@ -52,6 +60,7 @@ func getFlags() error {
 		pwdUsage           = "The password of the redis instance"
 		defaultDB          = 0
 		dbUsage            = "The database to be selected after connecting to redis instance"
+		defaultToken       = ""
 		tokenUsage         = "A bot token to be added to the set of tokens"
 	)
 
@@ -63,8 +72,8 @@ func getFlags() error {
 	flag.StringVar(&(cmdFlags.redisPwd), "p", defaultPwd, pwdUsage+"(shorthand)")
 	flag.IntVar(&(cmdFlags.redisDB), "redisDB", defaultDB, dbUsage)
 	flag.IntVar(&(cmdFlags.redisDB), "d", defaultDB, dbUsage+"(shorthand)")
-	flag.Var(&(cmdFlags.tokens), "token", tokenUsage)
+	flag.StringVar(&(cmdFlags.token), "token", defaultToken, tokenUsage)
-	flag.Var(&(cmdFlags.tokens), "t", tokenUsage+"(shorthand")
+	flag.StringVar(&(cmdFlags.token), "t", defaultToken, tokenUsage+"(shorthand")
 
 	flag.Parse()
 
@@ -75,14 +84,17 @@ func mainMenu() error {
 	fmt.Println(welcomeMessage)
 	menu := wmenu.NewMenu("What do you want to do?")
 	menu.LoopOnInvalid()
-	menu.Option("Start Bot(s)", nil, true, func(opt wmenu.Opt) error {
+	menu.Option("Start Bot", nil, true, func(opt wmenu.Opt) error {
-		return botsStart()
+		return botStart()
 	})
-	menu.Option("Add bot token(s)", nil, false, func(opt wmenu.Opt) error {
+	menu.Option("Set bot token", nil, false, func(opt wmenu.Opt) error {
-		return addBotTokens(nil)
+		return setBotToken("")
 	})
-	menu.Option("Remove bot token(s)", nil, false, func(opt wmenu.Opt) error {
+	menu.Option("Add bot admin(s)", nil, false, func(opt wmenu.Opt) error {
-		return removeBotTokens()
+		return addBotAdmins(nil)
+	})
+	menu.Option("Remove bot admin(s)", nil, false, func(opt wmenu.Opt) error {
+		return removeBotAdmins()
 	})
 
 	var returnErr error

src/telegramAPI.go

@@ -4,104 +4,85 @@ import (
 	"errors"
 	"log"
 	"strconv"
-	"sync"
 	"time"
 
 	tb "gopkg.in/tucnak/telebot.v2"
 )
 
-var bots []*tb.Bot
+var bot *tb.Bot
 
 var (
 	//ErrNilPointer is thrown when a pointer is nil
 	ErrNilPointer = errors.New("pointer is nil")
 	//ErrIDFromMsg is thrown when the message doesn't contain user infos
-	ErrIDFromMsg = errors.New("telegram: couldn't retrive user ID from message")
+	ErrIDFromMsg = errors.New("telegram: couldn't retrieve user ID from message")
+	//ErrSendMsg is thrown when the message couldn't be send
+	ErrSendMsg = errors.New("telegram: cannot send message")
+	//ErrChatRetrive is thrown when the chat cannot be retrieved
+	ErrChatRetrieve = errors.New("telegram: cannot retrieve chat")
 )
 
-func botsInit() error {
+func botInit() error {
-	tokens, err := getBotTokens()
+	token, err := getBotToken()
 	if err != nil {
-		log.Printf("Error in retriving bot tokens: %v. Cannot start telebot without tokens.", err)
+		log.Printf("Error in retriving bot token: %v. Cannot start telebot without token.", err)
 		return err
 	}
 
-	if tokens == nil {
+	poller := &tb.LongPoller{Timeout: 15 * time.Second}
-		log.Println("Error: pointer is nil")
+	middlePoller := tb.NewMiddlewarePoller(poller, func(upd *tb.Update) bool {
-		return ErrNilPointer
+		if upd.Message == nil {
-	}
-
-	for _, token := range tokens {
-		poller := &tb.LongPoller{Timeout: 15 * time.Second}
-		middlePoller := tb.NewMiddlewarePoller(poller, func(upd *tb.Update) bool {
-			if upd.Message == nil {
-				return true
-			}
-			if upd.Message.Sender != nil {
-				err := addUser(upd.Message.Sender)
-				if err != nil {
-					log.Printf("Error in adding user info: %v", err)
-				}
-				err = authorizeUser(upd.Message.Sender.ID, true)
-				if err != nil {
-					log.Printf("Error in authorizing user: %v", err)
-				}
-			} else {
-				log.Printf("%v", ErrIDFromMsg)
-			}
-			auth, err := isAuthrizedUser(upd.Message.Sender.ID)
-			if err != nil {
-				log.Printf("Error checking if user is authorized: %v", err)
-			}
-			if !auth {
-				return false
-			}
-
 			return true
-		})
+		}
-
+		if upd.Message.Sender != nil {
-		bot, err := tb.NewBot(tb.Settings{
+			err := addUser(upd.Message.Sender)
-			Token:  token,
-			Poller: middlePoller,
-		})
-
-		if err != nil {
-			log.Printf("Error in enstablishing connection for bot %s: %v", bot.Me.Username, err)
-		} else {
-			bots = append(bots, bot)
-			err = addBotInfo(token, bot)
 			if err != nil {
-				log.Printf("Error: bot %s info couldn't be added: %v", bot.Me.Username, err)
+				log.Printf("Error in adding user info: %v", err)
 			}
+			err = authorizeUser(upd.Message.Sender.ID, true)
+			if err != nil {
+				log.Printf("Error in authorizing user: %v", err)
+			}
+		} else {
+			log.Printf("%v", ErrIDFromMsg)
+		}
+		auth, err := isAuthrizedUser(upd.Message.Sender.ID)
+		if err != nil {
+			log.Printf("Error checking if user is authorized: %v", err)
+		}
+		if !auth {
+			return false
 		}
-	}
-	return nil
-}
 
-func botsStart() error {
+		return true
-	err := botsInit()
+	})
+
+	bot, err = tb.NewBot(tb.Settings{
+		Token:  token,
+		Poller: middlePoller,
+	})
+
 	if err != nil {
-		log.Fatalf("Error in initializing bots: %v", err)
+		log.Printf("Error in enstablishing connection for bot %s: %v", bot.Me.Username, err)
-	}
+	} else {
-
+		err = addBotInfo(token, bot)
-	for _, bot := range bots {
+		if err != nil {
-		defer bot.Stop()
+			log.Printf("Error: bot %s info couldn't be added: %v", bot.Me.Username, err)
-	}
-
-	var wg sync.WaitGroup
-	for i := range bots {
-		if bots[i] != nil {
-			wg.Add(1)
-			go botStart(bots[i], &wg)
 		}
 	}
-	wg.Wait()
-
 	return nil
 }
 
-func botStart(bot *tb.Bot, wg *sync.WaitGroup) error {
+func sendMessage(user *tb.User, msg string) error {
-	defer wg.Done()
+	_, err := bot.Send(user, msg)
+	if err != nil {
+		log.Printf("Error sending message to user: %v", err)
+		return ErrSendMsg
+	}
+	return nil
+}
+
+func botStart() error {
 	if bot == nil {
 		return ErrNilPointer
 	}