from collections import defaultdict
import asyncio
class HydratorTasker:
    """
    Manages tasks generated by the Zenaura diffing algorithm for updating both the real DOM and the virtual DOM.

    This class provides methods for:

    - Creating and retrieving task queues for specific component IDs.
    - Enqueuing tasks for components.
    - Dequeuing tasks for components.

    **Key Features:**

    - Efficient task management for real and virtual DOM updates.
    - Thread-safe task queue operations.
    - Automatic cleanup of empty task queues.

    **Usage:**

    1. Use `hyd_tsk_get_or_create_task_queue` to get or create a task queue for a specific component ID.
    2. Use `hyd_tsk_enqueue_task` to enqueue a task for a component.
    3. Use `hyd_tsk_dequeue_task` to dequeue a task for a component.

    **Example:**

    ```python
    tasker = HydratorTasker()

    # Get or create a task queue for component ID "my-component"
    task_queue = tasker.hyd_tsk_get_or_create_task_queue("my-component")

    # Enqueue a task for the component
    task_queue.put_nowait(my_task)

    # Dequeue a task for the component
    task = task_queue.get_nowait()

    # Execute the task
    task()
    ```
    """

    queue_lookup = defaultdict(lambda: None)

    def __init__(self):
        """
        Initializes the HydratorTasker instance.
        """
        pass

    def hyd_tsk_get_or_create_task_queue(self, component_id) -> asyncio.Queue:
        """
        Gets or creates a task queue for the specified component ID.

        Args:
            component_id (str): The ID of the component.

        Returns:
            asyncio.Queue: The task queue for the component.
        """
        try:
            if component_id not in self.queue_lookup:
                self.queue_lookup[component_id] = asyncio.Queue()
                return self.queue_lookup[component_id]
            else:
                return self.queue_lookup[component_id]
        except KeyError:
            return False

    def hyd_tsk_enqueue_task(self, component_id, task):
        """
        Enqueues a task for the specified component ID.

        Args:
            component_id (str): The ID of the component.
            task (callable): The task to be enqueued.

        Returns:
            bool: True if the task was successfully enqueued, False otherwise.
        """
        comp_queue = self.queue_lookup[component_id]
        try:
            comp_queue.put_nowait(task)
            return True
        except asyncio.QueueFull:
            return False

    async def hyd_tsk_do_nothing(self):
        """
        A placeholder function used when a task queue is empty.
        """
        pass

    def hyd_tsk_dequeue_task(self, component_id):
        """
        Dequeues a task for the specified component ID.

        Args:
            component_id (str): The ID of the component.

        Returns:
            callable: The dequeued task, or `hyd_tsk_do_nothing` if the queue is empty.
        """
        comp_queue = self.queue_lookup[component_id]
        try:
            task = comp_queue.get_nowait()
            return task
        except asyncio.QueueEmpty:
            # Clean up and return the placeholder function
            del self.queue_lookup[component_id]
            return self.hyd_tsk_do_nothing
