from ably import AblyRest

class WebSocketService:
    def _init_(self, service_type='ably', token=None):
        """
        Initialize the WebSocketService.
        
        :param service_type: The type of WebSocket service (default: 'ably').
        :param token: The authentication token for the WebSocket service.
        """
        self.service_type = service_type
        self.token = token
        self.client = None

    def connect(self):
        """
        Connect to the WebSocket service (e.g., Ably).
        """
        if self.service_type == 'ably':
            if not self.token:
                raise ValueError("Ably token is required.")
            self.client = AblyRest(self.token)
        else:
            raise ValueError(f"Unsupported WebSocket service type: {self.service_type}")

    def publish(self, channel_name, function_name, data):
        """
        Publish a message to a specific channel.

        :param channel_name: The name of the channel to publish to.
        :param function_name: The name of the function or event to trigger.
        :param data: The data to publish.
        """
        if not self.client:
            raise RuntimeError("WebSocket service is not connected. Call connect() first.")

        if self.service_type == 'ably':
            channel = self.client.channels.get(channel_name)
            channel.publish(function_name, data)
        else:
            raise ValueError(f"Unsupported WebSocket service type: {self.service_type}")

    def disconnect(self):
        """
        Disconnect from the WebSocket service.
        """
        self.client = None