AI generated first iteration

app/twitch/__init__.py

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+"""Twitch modules."""

app/twitch/chat.py

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+"""Twitch chat client for sending and receiving messages."""
+
+import logging
+from typing import Optional
+
+logger = logging.getLogger(__name__)
+
+
+async def send_chat_message(
+    channel_name: str,
+    message: str,
+    access_token: Optional[str] = None,
+) -> bool:
+    """
+    Send a message to Twitch chat.
+    
+    Args:
+        channel_name: Twitch channel to send message to
+        message: Message content
+        access_token: OAuth token with chat:edit scope
+        
+    Returns:
+        True if message sent successfully
+        
+    TODO: Implement Twitch Send Chat Message API
+    Reference: https://dev.twitch.tv/docs/api/reference#send-chat-message
+    
+    TODO: Handle rate limiting (20 messages per 30 seconds for verified bots)
+    TODO: Implement message queue for reliable delivery
+    TODO: Add retry logic with exponential backoff
+    """
+    logger.info(f"Sending message to {channel_name}: {message[:50]}...")
+    # Stub implementation
+    return True
+
+
+class ChatMessageBuffer:
+    """
+    Buffer for outgoing chat messages with rate limiting.
+    
+    Implements Twitch's chat rate limits:
+    - Regular users: 20 messages per 30 seconds
+    - Verified bots: 50 messages per 30 seconds
+    - Moderators: 100 messages per 30 seconds
+    
+    TODO: Implement queue with configurable rate limits
+    TODO: Add priority levels for urgent messages
+    TODO: Implement metrics tracking
+    """
+
+    def __init__(self, channel_name: str, max_messages_per_interval: int = 20):
+        """Initialize message buffer."""
+        self.channel_name = channel_name
+        self.max_messages_per_interval = max_messages_per_interval
+        self.message_queue: list[str] = []
+
+    async def add_message(self, message: str) -> None:
+        """Add a message to the buffer."""
+        self.message_queue.append(message)
+        logger.debug(f"Message queued for {self.channel_name}")
+
+    async def flush(self) -> None:
+        """Send all buffered messages."""
+        for message in self.message_queue:
+            await send_chat_message(self.channel_name, message)
+        self.message_queue.clear()

app/twitch/eventsub.py

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+"""Twitch EventSub client for handling stream events."""
+
+import logging
+from typing import Callable, Optional
+
+logger = logging.getLogger(__name__)
+
+
+class TwitchEventSubClient:
+    """
+    Client for Twitch EventSub WebSocket connections.
+    
+    Handles real-time stream events like chat messages, follows, raids, etc.
+    
+    TODO: Implement real OAuth 2.0 token exchange flow
+    TODO: Implement WebSocket connection to Twitch EventSub
+    TODO: Handle subscription management (follow, subscribe, cheer, raid events)
+    TODO: Implement heartbeat and reconnection logic
+    """
+
+    def __init__(self, client_id: str, access_token: str):
+        """
+        Initialize EventSub client.
+        
+        Args:
+            client_id: Twitch application client ID
+            access_token: OAuth token for API calls
+        """
+        self.client_id = client_id
+        self.access_token = access_token
+        self.connected = False
+        self.event_handlers: dict[str, Callable] = {}
+
+    async def connect(self, channel_id: str) -> bool:
+        """
+        Establish WebSocket connection to Twitch EventSub.
+        
+        Args:
+            channel_id: Twitch channel ID to monitor
+            
+        Returns:
+            True if connection successful
+            
+        TODO: Implement WebSocket handshake
+        TODO: Subscribe to stream.online, stream.offline
+        """
+        logger.info(f"Attempting to connect to EventSub for channel {channel_id}")
+        self.connected = True
+        return True
+
+    async def disconnect(self) -> None:
+        """
+        Close EventSub connection gracefully.
+        
+        TODO: Send close frame to WebSocket
+        TODO: Clean up subscriptions
+        """
+        logger.info("Disconnecting from EventSub")
+        self.connected = False
+
+    async def listen(self) -> None:
+        """
+        Listen for incoming EventSub events (blocking call).
+        
+        Should run in a background task and emit events to registered handlers.
+        
+        TODO: Implement WebSocket message loop
+        TODO: Parse and dispatch events to registered handlers
+        TODO: Handle reconnection on failure
+        """
+        logger.info("EventSub listener started (stub)")
+        pass
+
+    def on(self, event_type: str) -> Callable:
+        """
+        Register an event handler for a specific event type.
+        
+        Args:
+            event_type: Type of event (e.g., 'stream.online', 'channel.follow')
+            
+        Returns:
+            Decorator function
+        """
+        def decorator(func: Callable) -> Callable:
+            self.event_handlers[event_type] = func
+            logger.debug(f"Registered handler for {event_type}")
+            return func
+        return decorator
+
+    async def emit_event(self, event_type: str, data: dict) -> None:
+        """
+        Emit an event to registered handlers (internal use).
+        
+        Args:
+            event_type: Type of event
+            data: Event data payload
+        """
+        if event_type in self.event_handlers:
+            handler = self.event_handlers[event_type]
+            try:
+                await handler(data)
+            except Exception as e:
+                logger.error(f"Error in event handler for {event_type}: {e}")