Video Streaming Publisher

class StreamingPublisher:
    """Manages video asset publishing and streaming delivery."""

    def __init__(self, client, resource_group: str, account_name: str):
        """
        Initialize the publisher.

        Args:
            client: Azure Media Services client
            resource_group: Azure resource group name
            account_name: Media Services account name
        """
        pass

    def publish_asset(self, asset_name: str, locator_name: str, streaming_policy: str = "Predefined_ClearStreamingOnly") -> dict:
        """
        Publish an asset for streaming by creating a streaming locator.

        Args:
            asset_name: Name of the asset to publish
            locator_name: Unique name for the streaming locator
            streaming_policy: Name of the streaming policy to use

        Returns:
            Dictionary containing locator information
        """
        pass

    def start_streaming_endpoint(self, endpoint_name: str) -> None:
        """
        Start a streaming endpoint to enable content delivery.

        Args:
            endpoint_name: Name of the streaming endpoint to start
        """
        pass

    def stop_streaming_endpoint(self, endpoint_name: str) -> None:
        """
        Stop a streaming endpoint.

        Args:
            endpoint_name: Name of the streaming endpoint to stop
        """
        pass

    def scale_streaming_endpoint(self, endpoint_name: str, scale_units: int) -> None:
        """
        Scale a streaming endpoint to handle more concurrent viewers.

        Args:
            endpoint_name: Name of the streaming endpoint
            scale_units: Number of scale units (0 for standard, >0 for premium)
        """
        pass

    def get_streaming_urls(self, locator_name: str, endpoint_name: str) -> dict:
        """
        Generate streaming URLs for a published asset.

        Args:
            locator_name: Name of the streaming locator
            endpoint_name: Name of the streaming endpoint

        Returns:
            Dictionary with protocol names as keys and URLs as values
            Example: {"HLS": "https://...", "DASH": "https://...", "SmoothStreaming": "https://..."}
        """
        pass

    def get_endpoint_hostname(self, endpoint_name: str) -> str:
        """
        Get the hostname of a streaming endpoint.

        Args:
            endpoint_name: Name of the streaming endpoint

        Returns:
            Hostname string
        """
        pass