telegram-d2-bot

A telegram bot which answers with rendered .svg files in .png format.

Using terrastruct/d2 for generating .svg files from messages.

Configuration

$ cp config.json.sample config.json

and edit:

{
  "allowed_ids": ["telegram_username_1", "telegram_username_2"],
  "monitor_interval": 5,
  "theme_id": 0,
  "sketch": false,
  "is_verbose": false,

  "bot_token": "xxxxxxxxyyyyyyyy-1234567"
}

bot_token can be obtained from bot father
allowed_ids are ids of allowed telegram users who can get responses from this bot
monitor_interval is the polling interval (in seconds) from telegram API
theme_id can be retrieved from these files (= 0 for default)
sketch is whether to render results in sketched style
is_verbose is whether to print verbose messages

Using Infisical

You can use Infisical for retrieving your bot token and api key:

{
  "allowed_ids": ["telegram_username_1", "telegram_username_2"],
  "monitor_interval": 5,
  "theme_id": 0,
  "sketch": false,
  "is_verbose": false,

  "infisical": {
    "client_id": "012345-abcdefg-987654321",
    "client_secret": "aAbBcCdDeEfFgG0123456789xyzwXYZW",

    "workspace_id": "012345abcdefg",
    "environment": "dev",
    "secret_type": "shared",

    "bot_token_key_path": "/path/to/your/KEY_TO_BOT_TOKEN",
  }
}

Other Dependencies

Playwright is needed for exporting .png files:

$ npx playwright install-deps

Build and Run

$ go build
$ ./telegram-d2-bot config.json

Run as a service

systemd

Create a file named /etc/systemd/system/telegram-d2-bot.service:

[Unit]
Description=Telegram D2 Bot
After=syslog.target
After=network.target

[Service]
Type=simple
User=ubuntu
Group=ubuntu
WorkingDirectory=/dir/to/telegram-d2-bot
ExecStart=/dir/to/telegram-d2-bot/telegram-d2-bot [CONFIG_FILEPATH]
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target

and make it run automatically on booting:

$ sudo systemctl enable telegram-d2-bot.service
$ sudo systemctl start telegram-d2-bot.service

Todos

Add more configurable options.
Support uploading .d2 files.
Respond with .png files. (Playwright is needed)