init bot

main.go

@@ -1,11 +1,93 @@
 package main
 
-import "fmt"
+import (
+	"errors"
+	"fmt"
+	tgbot "github.com/go-telegram-bot-api/telegram-bot-api"
+	"github.com/umputun/go-flags"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+	"valera/commands"
+)
 
 const (
 	version = "v0.1.1"
 )
 
-func main() {
-  fmt.Println("Hello, Go!")
+type Opts struct {
+	Token string `short:"t" long:"token" description:"Telegram api token"`
+	Name  string `short:"n" long:"name" description:"Telegram bot name" default:"@body_weight_loss_bot"`
+}
+
+var opts Opts
+
+func readToken() (string, error) {
+	b, err := ioutil.ReadFile("token.txt")
+	if err != nil {
+		return "", err
+	}
+	str := string(b)
+	return str, nil
+}
+
+func main() {
+	run()
+}
+
+func run() {
+	p := flags.NewParser(&opts, flags.PrintErrors|flags.PassDoubleDash|flags.HelpFlag)
+	p.SubcommandsOptional = true
+	if _, err := p.Parse(); err != nil {
+		if err.(*flags.Error).Type != flags.ErrHelp {
+			log.Println(errors.New("[ERROR] cli error: " + err.Error()))
+		}
+		os.Exit(2)
+	}
+
+	if opts.Token == "" {
+		token, err := readToken()
+		if err != nil {
+			panic(err)
+		}
+		opts.Token = strings.ReplaceAll(token, "\n", "")
+	}
+	fmt.Println(opts.Token)
+
+	bot, err := tgbot.NewBotAPI(opts.Token)
+	if err != nil {
+		panic(err)
+	}
+
+	u := tgbot.NewUpdate(0)
+	u.Timeout = 60
+
+	updates, err := bot.GetUpdatesChan(u)
+	if err != nil {
+		panic(err)
+	}
+
+	log.Println("Run", opts.Name)
+
+	for update := range updates {
+
+		if update.Message == nil {
+			continue
+		}
+
+		text := update.Message.Text
+		chatID := update.Message.Chat.ID
+//		username := update.Message.From.UserName
+
+		command := commands.Command(strings.Replace(text, opts.Name, "", 1))
+		switch command {
+		case commands.Start:
+			_, _ = bot.Send(tgbot.NewMessage(chatID, fmt.Sprintf("Здорова, я Валера (%s), твой тренер (%d).", version, chatID)))
+		case commands.Help:
+			_, _ = bot.Send(tgbot.NewMessage(chatID, "Вот что я умею:\n\n1) Ничего"))
+		case commands.Ping:
+			_, _ = bot.Send(tgbot.NewMessage(chatID, "pong"))
+		}
+	}
 }