# Duty Teller (Telegram Bot)

A minimal Telegram bot boilerplate using [python-telegram-bot](https://github.com/python-telegram-bot/python-telegram-bot) v22 with the `Application` API.

## Get a bot token

1. Open Telegram and search for [@BotFather](https://t.me/BotFather).
2. Send `/newbot` and follow the prompts to create a bot.
3. Copy the token BotFather gives you.

## Setup

1. **Clone and enter the project**
   ```bash
   cd duty-teller
   ```

2. **Create a virtual environment (recommended)**
   ```bash
   python -m venv venv
   source venv/bin/activate   # Linux/macOS
   # or: venv\Scripts\activate  # Windows
   ```

3. **Install dependencies**
   ```bash
   pip install -r requirements.txt
   ```

4. **Configure the bot**
   ```bash
   cp .env.example .env
   ```
   Edit `.env` and set `BOT_TOKEN` to the token from BotFather.

## Run

```bash
python main.py
```

The bot runs in polling mode. Send `/start` or `/help` to your bot in Telegram to test.

## Run with Docker

Ensure `.env` exists (e.g. `cp .env.example .env`) and contains `BOT_TOKEN`.

- **Dev** (volume mount; code changes apply without rebuild):
  ```bash
  docker compose -f docker-compose.dev.yml up --build
  ```
  Stop with `Ctrl+C` or `docker compose -f docker-compose.dev.yml down`.

- **Prod** (no volume; runs the built image; restarts on failure):
  ```bash
  docker compose -f docker-compose.prod.yml up -d --build
  ```
  For production deployments you may use Docker secrets or your orchestrator’s env instead of a `.env` file.

## Project layout

- `main.py` – Builds the `Application`, registers handlers, runs polling.
- `config.py` – Loads `BOT_TOKEN` from env; exits if missing.
- `handlers/` – Command and error handlers; add new handlers here.
- `requirements.txt` – Pinned dependencies (PTB with job-queue, python-dotenv).

To add commands, define async handlers in `handlers/commands.py` (or a new module) and register them in `handlers/__init__.py`.