This app provides a bridge between Telegram and MQTT. You can post messages to a chat channel by publishing a message on an MQTT topic.

With this project, it is possible to publish messages like your dishwasher has just finished! or request the lights that are turned on through Telegram. You will need to use separate tools to create such messages or react to a message you get from Telegram. This tool will convert the messages for you. It follows the principles of mqtt-smarthome.

1. Publish the MQTT message hello to telegram/displayname/set and the user with the given chat-id will be informed.

2. Send a message using Telegram, and you will get this message as MQTT message on the topic telegram/displayname.

3. Publish the MQTT message hello to telegram/*/set and all known users (chat ids) will get the message.

You have to create a chat-bot first. Use the telegram BotFather to do this. You just need to know the telegram token for your bot to use this app.

Open the chat-bot using Telegram and execute /start. The bot will ask you for your start-code. You will get the chat-id as a result. The chat-id can be inserted into your configuration. At the moment, you have to do this yourself. When it turns out that more users, and not just me, use this, we can add this feature.

{
   "mqtt": {
      "url": "tcp://192.168.2.98:1883",
      "client-id": "mqtt-telegram",
      "topic": "telegram",
      "username": "user",
      "password": "password"
   },
   "telegram": {
      "token": "telegram-chat-bot-token",
      "start-code": "start-code-chosen-by-yourself",
      "chat-ids": {
         "displayname1": 456,
         "displayname2": 123456789
      }
   }
}

  mqtttelegram:
     image: pharndt/mqtttelegram:1.0.4
     volumes:
        - ./config/mqtttelegram:/var/lib/mqtttelegram:ro
     environment:
        TZ: "Europe/Berlin"
     restart: always
     depends_on:
        - mosquitto