a

go.mod

@@ -0,0 +1,5 @@
+module nulo.in/telegram-bot-send-message
+
+go 1.19
+
+require github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1 // indirect

go.sum

@@ -0,0 +1,2 @@
+github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1 h1:wG8n/XJQ07TmjbITcGiUaOtXxdrINDz1b0J1w0SzqDc=
+github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1/go.mod h1:A2S0CWkNylc2phvKXWBBdD3K0iGnDBGbzRpISP2zBl8=

main.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"encoding/json"
+	"io"
+	"log"
+	"os"
+	"path"
+
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
+)
+
+type Config struct {
+	Token  string `json:"token"`
+	ChatId int64  `json:"chat_id"`
+}
+
+func readConfig() (Config, error) {
+	config := Config{}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return config, err
+	}
+	pathName := path.Join(homeDir, ".config/telegram-bot-send-message.json")
+
+	file, err := os.Open(pathName)
+	if err != nil {
+		return config, err
+	}
+	configBytes, err := io.ReadAll(file)
+	if err != nil {
+		return config, err
+	}
+	err = json.Unmarshal(configBytes, &config)
+	if err != nil {
+		return config, err
+	}
+	return config, nil
+}
+
+func main() {
+	config, err := readConfig()
+	if err != nil {
+		panic(err)
+	}
+
+	bot, err := tgbotapi.NewBotAPI(config.Token)
+	if err != nil {
+		panic(err)
+	}
+
+	text := "No se especificó un mensaje."
+	if len(os.Args) > 1 {
+		text = os.Args[1]
+	}
+
+	for true {
+		msg := tgbotapi.NewMessage(config.ChatId, text)
+
+		if _, err := bot.Send(msg); err != nil {
+			log.Println(err)
+		} else {
+			break
+		}
+	}
+}