📦 Telemon

Telemon is a lightweight Rust library for sending logs or messages to a Telegram group using a bot. It supports topic-based messaging and flexible configuration through a telemon.toml file.

🚀 Features

• Send messages to Telegram topics
• Configuration via telemon.toml
• Optional logging to console
• Flexible usage with or without global chat_id

🛠 Configuration

Create a telemon.toml file in your project root:

token = "BOT_TOKEN"          # Your Telegram bot token
chat_id = -100xxxxxxx     # (Optional) Telegram group chat ID
show_logs = false            # Set to true to display logs in console
parse_mode = "HTML"      # (Optional) Message format: Markdown, HTML, or empty for plain text
group_id = -100xxxxxx    # (Optional) Use this if you only want to send messages to a group, not to a specific topic

• token: The bot token provided by BotFather
• chat_id: (Optional) The group chat ID where messages will be sent
• show_logs: If true, logs will also be printed to the terminal
• parse_mode: Defines the message format sent to Telegram. Accepted values are: Markdown, MarkdownV2, Html
• group_id (Optional) Used to send messages directly to a Telegram group without specifying a topic (i.e., for non-forum groups).

Markdown – Enables Markdown formatting

HTML – Enables HTML formatting

Leave empty or omit for plain text

📤 Usage

You can send messages in two ways, depending on whether chat_id is defined in the config.

1. If chat_id is set in the config

Use .to(topic_id) — the chat_id will be automatically read from the config:

use telemon::Telemon;

Telemon::send("✅ Success").to(34);

2. If chat_id is not set in the config

You must provide the chat_id as the first value in a tuple:

use telemon::Telemon;

Telemon::send("🚨 Error occurred").to((-1002483629475, 34));

3. If group_id is set (and chat_id is not used), you can send messages using the .to_group() method, which does not require a thread ID.

Telemon::send("Hello group!").to_group();

In this case:

• The first value is the chat_id
• The second value is the topic ID within the group

📌 Notes

• If show_logs = true, every message sent will also be printed to the terminal.
• If show_logs = false, logs will be silent.
• topic_id refers to the forum topic ID inside the Telegram group.

✅ Correct Usage in Async Code

To safely call a blocking function such as Telemon::send inside an async function, wrap it with tokio::task::spawn_blocking. This runs the operation on a separate thread, ensuring that your async runtime remains non-blocked:

use telemon::Telemon;

let reply = "Hello from async!";

tokio::task::spawn_blocking(move || {
    Telemon::send(&reply).to(2)
}).await?;

📄 License

MIT License