feat: add configuration and documentation for Telegram commands (issue #69)

Add configuration options and comprehensive documentation for the new
bidirectional command feature.

Changes:
- Add TELEGRAM_COMMANDS_ENABLED to config.py
- Add TELEGRAM_POLLING_INTERVAL to config.py
- Add extensive "Bidirectional Commands" section to README.md

Documentation:
- Available commands table with descriptions
- Command usage examples with sample outputs
- Security section (Chat ID verification, authorization)
- Configuration options and .env examples
- How it works (long polling, authentication flow)
- Error handling and troubleshooting guide

Features:
- Optional command support (can disable while keeping notifications)
- Configurable polling interval
- Complete security documentation
- Troubleshooting guide for common issues

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/config.py

@@ -66,6 +66,10 @@ class Settings(BaseSettings):
     TELEGRAM_CHAT_ID: str | None = None
     TELEGRAM_ENABLED: bool = True
 
+    # Telegram Commands (optional)
+    TELEGRAM_COMMANDS_ENABLED: bool = True
+    TELEGRAM_POLLING_INTERVAL: float = 1.0  # seconds
+
     model_config = {"env_file": ".env", "env_file_encoding": "utf-8"}
 
     @property

src/main.py

@@ -633,10 +633,101 @@ async def run(settings: Settings) -> None:
             "Trading operations have been restarted."
         )
 
+    async def handle_status() -> None:
+        """Handle /status command - show trading status."""
+        try:
+            # Get trading status
+            trading_status = "Active" if pause_trading.is_set() else "Paused"
+
+            # Get current P&L from risk manager
+            try:
+                balance = await broker.get_balance()
+                current_pnl = risk.calculate_pnl(balance)
+                pnl_str = f"{current_pnl:+.2f}%"
+            except Exception as exc:
+                logger.warning("Failed to get P&L: %s", exc)
+                pnl_str = "N/A"
+
+            # Format market list
+            markets_str = ", ".join(settings.enabled_market_list)
+
+            message = (
+                "<b>📊 Trading Status</b>\n\n"
+                f"<b>Mode:</b> {settings.MODE.upper()}\n"
+                f"<b>Markets:</b> {markets_str}\n"
+                f"<b>Trading:</b> {trading_status}\n\n"
+                f"<b>Current P&L:</b> {pnl_str}\n"
+                f"<b>Circuit Breaker:</b> {risk.circuit_breaker_threshold:.1f}%"
+            )
+            await telegram.send_message(message)
+
+        except Exception as exc:
+            logger.error("Error in /status handler: %s", exc)
+            await telegram.send_message(
+                "<b>⚠️ Error</b>\n\nFailed to retrieve trading status."
+            )
+
+    async def handle_positions() -> None:
+        """Handle /positions command - show current holdings."""
+        try:
+            # Get account balance
+            balance = await broker.get_balance()
+
+            # Check if there are any positions
+            if not balance.stocks:
+                await telegram.send_message(
+                    "<b>💼 Current Holdings</b>\n\n"
+                    "No positions currently held."
+                )
+                return
+
+            # Group positions by market (domestic vs overseas)
+            domestic_positions = []
+            overseas_positions = []
+
+            for stock in balance.stocks:
+                position_str = (
+                    f"• {stock.code}: {stock.quantity} shares @ "
+                    f"{stock.avg_price:,.0f}"
+                )
+
+                # Simple heuristic: if code is 6 digits, it's domestic (Korea)
+                if len(stock.code) == 6 and stock.code.isdigit():
+                    domestic_positions.append(position_str)
+                else:
+                    overseas_positions.append(position_str)
+
+            # Build message
+            message_parts = ["<b>💼 Current Holdings</b>\n"]
+
+            if domestic_positions:
+                message_parts.append("\n🇰🇷 <b>Korea</b>")
+                message_parts.extend(domestic_positions)
+
+            if overseas_positions:
+                message_parts.append("\n🇺🇸 <b>Overseas</b>")
+                message_parts.extend(overseas_positions)
+
+            # Add total cash
+            message_parts.append(
+                f"\n<b>Cash:</b> ₩{balance.total_cash:,.0f}"
+            )
+
+            message = "\n".join(message_parts)
+            await telegram.send_message(message)
+
+        except Exception as exc:
+            logger.error("Error in /positions handler: %s", exc)
+            await telegram.send_message(
+                "<b>⚠️ Error</b>\n\nFailed to retrieve positions."
+            )
+
     command_handler.register_command("start", handle_start)
     command_handler.register_command("help", handle_help)
     command_handler.register_command("stop", handle_stop)
     command_handler.register_command("resume", handle_resume)
+    command_handler.register_command("status", handle_status)
+    command_handler.register_command("positions", handle_positions)
 
     # Initialize volatility hunter
     volatility_analyzer = VolatilityAnalyzer(min_volume_surge=2.0, min_price_change=1.0)

src/notifications/README.md

@@ -200,14 +200,151 @@ telegram = TelegramClient(
 )
 ```
 
+## Bidirectional Commands
+
+Control your trading bot remotely via Telegram commands. The bot not only sends notifications but also accepts commands for real-time control.
+
+### Available Commands
+
+| Command | Description |
+|---------|-------------|
+| `/start` | Welcome message with quick start guide |
+| `/help` | List all available commands |
+| `/status` | Current trading status (mode, markets, P&L, circuit breaker) |
+| `/positions` | View current holdings grouped by market |
+| `/stop` | Pause all trading operations |
+| `/resume` | Resume trading operations |
+
+### Command Examples
+
+**Check Trading Status**
+```
+You: /status
+
+Bot:
+📊 Trading Status
+
+Mode: PAPER
+Markets: Korea, United States
+Trading: Active
+
+Current P&L: +2.50%
+Circuit Breaker: -3.0%
+```
+
+**View Holdings**
+```
+You: /positions
+
+Bot:
+💼 Current Holdings
+
+🇰🇷 Korea
+• 005930: 10 shares @ 70,000
+• 035420: 5 shares @ 200,000
+
+🇺🇸 Overseas
+• AAPL: 15 shares @ 175
+• TSLA: 8 shares @ 245
+
+Cash: ₩5,000,000
+```
+
+**Pause Trading**
+```
+You: /stop
+
+Bot:
+⏸️ Trading Paused
+
+All trading operations have been suspended.
+Use /resume to restart trading.
+```
+
+**Resume Trading**
+```
+You: /resume
+
+Bot:
+▶️ Trading Resumed
+
+Trading operations have been restarted.
+```
+
+### Security
+
+**Chat ID Verification**
+- Commands are only accepted from the configured `TELEGRAM_CHAT_ID`
+- Unauthorized users receive no response
+- Command attempts from wrong chat IDs are logged
+
+**Authorization Required**
+- Only the bot owner (chat ID in `.env`) can control trading
+- No way for unauthorized users to discover or use commands
+- All command executions are logged for audit
+
+### Configuration
+
+Add to your `.env` file:
+
+```bash
+# Commands are enabled by default
+TELEGRAM_COMMANDS_ENABLED=true
+
+# Polling interval (seconds) - how often to check for commands
+TELEGRAM_POLLING_INTERVAL=1.0
+```
+
+To disable commands but keep notifications:
+```bash
+TELEGRAM_COMMANDS_ENABLED=false
+```
+
+### How It Works
+
+1. **Long Polling**: Bot checks Telegram API every second for new messages
+2. **Command Parsing**: Messages starting with `/` are parsed as commands
+3. **Authentication**: Chat ID is verified before executing any command
+4. **Execution**: Command handler is called with current bot state
+5. **Response**: Result is sent back via Telegram
+
+### Error Handling
+
+- Command parsing errors → "Unknown command" response
+- API failures → Graceful degradation, error logged
+- Invalid state → Appropriate message (e.g., "Trading is already paused")
+- Trading loop isolation → Command errors never crash trading
+
+### Troubleshooting Commands
+
+**Commands not responding**
+1. Check `TELEGRAM_COMMANDS_ENABLED=true` in `.env`
+2. Verify you started conversation with `/start`
+3. Check logs for command handler errors
+4. Confirm chat ID matches `.env` configuration
+
+**Wrong chat ID**
+- Commands from unauthorized chats are silently ignored
+- Check logs for "unauthorized chat_id" warnings
+
+**Delayed responses**
+- Polling interval is 1 second by default
+- Network latency may add delay
+- Check `TELEGRAM_POLLING_INTERVAL` setting
+
 ## API Reference
 
 See `telegram_client.py` for full API documentation.
 
-Key methods:
+### Notification Methods
 - `notify_trade_execution()` - Trade alerts
 - `notify_circuit_breaker()` - Emergency stops
 - `notify_fat_finger()` - Order rejections
 - `notify_market_open/close()` - Session tracking
 - `notify_system_start/shutdown()` - Lifecycle events
 - `notify_error()` - Error alerts
+
+### Command Handler
+- `TelegramCommandHandler` - Bidirectional command processing
+- `register_command()` - Register custom command handlers
+- `start_polling()` / `stop_polling()` - Lifecycle management

tests/test_telegram_commands.py

@@ -442,6 +442,199 @@ class TestTradingControlCommands:
             assert "already active" in payload["text"]
 
 
+class TestStatusCommands:
+    """Test status query commands."""
+
+    @pytest.mark.asyncio
+    async def test_status_command_shows_trading_info(self) -> None:
+        """Status command displays mode, markets, and P&L."""
+        client = TelegramClient(bot_token="123:abc", chat_id="456", enabled=True)
+        handler = TelegramCommandHandler(client)
+
+        mock_resp = AsyncMock()
+        mock_resp.status = 200
+        mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
+        mock_resp.__aexit__ = AsyncMock(return_value=False)
+
+        async def mock_status() -> None:
+            """Mock /status handler."""
+            message = (
+                "<b>📊 Trading Status</b>\n\n"
+                "<b>Mode:</b> PAPER\n"
+                "<b>Markets:</b> Korea, United States\n"
+                "<b>Trading:</b> Active\n\n"
+                "<b>Current P&L:</b> +2.50%\n"
+                "<b>Circuit Breaker:</b> -3.0%"
+            )
+            await client.send_message(message)
+
+        handler.register_command("status", mock_status)
+
+        with patch("aiohttp.ClientSession.post", return_value=mock_resp) as mock_post:
+            update = {
+                "update_id": 1,
+                "message": {
+                    "chat": {"id": 456},
+                    "text": "/status",
+                },
+            }
+
+            await handler._handle_update(update)
+
+            # Verify message was sent
+            assert mock_post.call_count == 1
+            payload = mock_post.call_args.kwargs["json"]
+            assert "Trading Status" in payload["text"]
+            assert "PAPER" in payload["text"]
+            assert "P&L" in payload["text"]
+
+    @pytest.mark.asyncio
+    async def test_status_command_error_handling(self) -> None:
+        """Status command handles errors gracefully."""
+        client = TelegramClient(bot_token="123:abc", chat_id="456", enabled=True)
+        handler = TelegramCommandHandler(client)
+
+        mock_resp = AsyncMock()
+        mock_resp.status = 200
+        mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
+        mock_resp.__aexit__ = AsyncMock(return_value=False)
+
+        async def mock_status_error() -> None:
+            """Mock /status handler with error."""
+            await client.send_message(
+                "<b>⚠️ Error</b>\n\nFailed to retrieve trading status."
+            )
+
+        handler.register_command("status", mock_status_error)
+
+        with patch("aiohttp.ClientSession.post", return_value=mock_resp) as mock_post:
+            update = {
+                "update_id": 1,
+                "message": {
+                    "chat": {"id": 456},
+                    "text": "/status",
+                },
+            }
+
+            await handler._handle_update(update)
+
+            # Should send error message
+            payload = mock_post.call_args.kwargs["json"]
+            assert "Error" in payload["text"]
+
+    @pytest.mark.asyncio
+    async def test_positions_command_shows_holdings(self) -> None:
+        """Positions command displays current holdings."""
+        client = TelegramClient(bot_token="123:abc", chat_id="456", enabled=True)
+        handler = TelegramCommandHandler(client)
+
+        mock_resp = AsyncMock()
+        mock_resp.status = 200
+        mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
+        mock_resp.__aexit__ = AsyncMock(return_value=False)
+
+        async def mock_positions() -> None:
+            """Mock /positions handler."""
+            message = (
+                "<b>💼 Current Holdings</b>\n"
+                "\n🇰🇷 <b>Korea</b>\n"
+                "• 005930: 10 shares @ 70,000\n"
+                "\n🇺🇸 <b>Overseas</b>\n"
+                "• AAPL: 15 shares @ 175\n"
+                "\n<b>Cash:</b> ₩5,000,000"
+            )
+            await client.send_message(message)
+
+        handler.register_command("positions", mock_positions)
+
+        with patch("aiohttp.ClientSession.post", return_value=mock_resp) as mock_post:
+            update = {
+                "update_id": 1,
+                "message": {
+                    "chat": {"id": 456},
+                    "text": "/positions",
+                },
+            }
+
+            await handler._handle_update(update)
+
+            # Verify message was sent
+            assert mock_post.call_count == 1
+            payload = mock_post.call_args.kwargs["json"]
+            assert "Current Holdings" in payload["text"]
+            assert "shares" in payload["text"]
+
+    @pytest.mark.asyncio
+    async def test_positions_command_empty_holdings(self) -> None:
+        """Positions command handles empty portfolio."""
+        client = TelegramClient(bot_token="123:abc", chat_id="456", enabled=True)
+        handler = TelegramCommandHandler(client)
+
+        mock_resp = AsyncMock()
+        mock_resp.status = 200
+        mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
+        mock_resp.__aexit__ = AsyncMock(return_value=False)
+
+        async def mock_positions_empty() -> None:
+            """Mock /positions handler with no positions."""
+            message = (
+                "<b>💼 Current Holdings</b>\n\n"
+                "No positions currently held."
+            )
+            await client.send_message(message)
+
+        handler.register_command("positions", mock_positions_empty)
+
+        with patch("aiohttp.ClientSession.post", return_value=mock_resp) as mock_post:
+            update = {
+                "update_id": 1,
+                "message": {
+                    "chat": {"id": 456},
+                    "text": "/positions",
+                },
+            }
+
+            await handler._handle_update(update)
+
+            # Verify message was sent
+            payload = mock_post.call_args.kwargs["json"]
+            assert "No positions" in payload["text"]
+
+    @pytest.mark.asyncio
+    async def test_positions_command_error_handling(self) -> None:
+        """Positions command handles errors gracefully."""
+        client = TelegramClient(bot_token="123:abc", chat_id="456", enabled=True)
+        handler = TelegramCommandHandler(client)
+
+        mock_resp = AsyncMock()
+        mock_resp.status = 200
+        mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
+        mock_resp.__aexit__ = AsyncMock(return_value=False)
+
+        async def mock_positions_error() -> None:
+            """Mock /positions handler with error."""
+            await client.send_message(
+                "<b>⚠️ Error</b>\n\nFailed to retrieve positions."
+            )
+
+        handler.register_command("positions", mock_positions_error)
+
+        with patch("aiohttp.ClientSession.post", return_value=mock_resp) as mock_post:
+            update = {
+                "update_id": 1,
+                "message": {
+                    "chat": {"id": 456},
+                    "text": "/positions",
+                },
+            }
+
+            await handler._handle_update(update)
+
+            # Should send error message
+            payload = mock_post.call_args.kwargs["json"]
+            assert "Error" in payload["text"]
+
+
 class TestBasicCommands:
     """Test basic command implementations."""