"""A switch component."""
from typing import Set

from pynecone.components.component import EVENT_ARG
from pynecone.components.libs.chakra import ChakraComponent
from pynecone.var import Var


class Switch(ChakraComponent):
    """Togglable switch component."""

    tag = "Switch"

    # If true, the switch will be checked. You'll need to pass onChange to update its value (since it is now controlled)
    is_checked: Var[bool]

    # If true, the switch will be disabled
    is_disabled: Var[bool]

    # If true and isDisabled is passed, the switch will remain tabbable but not interactive
    is_focusable: Var[bool]

    # If true, the switch is marked as invalid. Changes style of unchecked state.
    is_invalid: Var[bool]

    # If true, the switch will be readonly
    is_read_only: Var[bool]

    # If true, the switch will be required
    is_required: Var[bool]

    # The name of the input field in a switch (Useful for form submission).
    name: Var[str]

    # The spacing between the switch and its label text (0.5rem)
    spacing: Var[str]

    # The placeholder text.
    placeholder: Var[str]

    @classmethod
    def get_controlled_triggers(cls) -> Set[str]:
        """Get the event triggers that pass the component's value to the handler.

        Returns:
            The controlled event triggers.
        """
        return {"on_change"}

    @classmethod
    def get_controlled_value(cls) -> Var:
        """Get the var that is passed to the event handler for controlled triggers.

        Returns:
            The controlled value.
        """
        return EVENT_ARG.target.checked