"""gr.BrowserState() component."""

from __future__ import annotations

import secrets
import string
from typing import Any

from gradio_client.documentation import document
from pydantic import BaseModel as PydanticBaseModel

from gradio.components.base import Component
from gradio.events import Events


def _to_json_serializable(value: Any) -> Any:
    """Convert a value to a JSON-serializable form.

    Pydantic BaseModel instances are converted to dicts via model_dump(),
    since they cannot be directly serialized by orjson and would otherwise
    fall back to str() representation.
    """
    if isinstance(value, PydanticBaseModel):
        return value.model_dump()
    return value

from gradio.events import Dependency

@document()
class BrowserState(Component):
    EVENTS = [Events.change]
    """
    Special component that stores state in the browser's localStorage in an encrypted format.
    """

    def __init__(
        self,
        default_value: Any = None,
        *,
        storage_key: str | None = None,
        secret: str | None = None,
        render: bool = True,
    ):
        """
        Parameters:
            default_value: the default value that will be used if no value is found in localStorage. Should be a json-serializable value.
            storage_key: the key to use in localStorage. If None, a random key will be generated.
            secret: the secret key to use for encryption. If None, a random key will be generated (recommended).
            render: should always be True, is included for consistency with other components.
        """
        self.default_value = _to_json_serializable(default_value)
        self.secret = secret or "".join(
            secrets.choice(string.ascii_letters + string.digits) for _ in range(16)
        )
        self.storage_key = storage_key or "".join(
            secrets.choice(string.ascii_letters + string.digits) for _ in range(16)
        )
        self._value_description = "any json-serializable value"

        super().__init__(render=render)

    def preprocess(self, payload: Any) -> Any:
        """
        Parameters:
            payload: Value from local storage
        Returns:
            Passes value through unchanged
        """
        if payload is None:
            return self.default_value
        return payload

    def postprocess(self, value: Any) -> Any:
        """
        Parameters:
            value: Value to store in local storage
        Returns:
            Passes value through unchanged, converting Pydantic models to dicts
        """
        return _to_json_serializable(value)

    def api_info(self) -> dict[str, Any]:
        return {"type": {}, "description": "any json-serializable value"}

    def example_payload(self) -> Any:
        return "test"

    def example_value(self) -> Any:
        return "test"

    def breaks_grouping(self) -> bool:
        """BrowserState components should not break wrapper grouping chains."""
        return False
    from typing import Callable, Literal, Sequence, Any, TYPE_CHECKING
    from gradio.blocks import Block
    if TYPE_CHECKING:
        from gradio.components import Timer
        from gradio.components.base import Component

    
    def change(self,
        fn: Callable[..., Any] | None = None,
        inputs: Block | Sequence[Block] | set[Block] | None = None,
        outputs: Block | Sequence[Block] | None = None,
        api_name: str | None = None,
        scroll_to_output: bool = False,
        show_progress: Literal["full", "minimal", "hidden"] = "full",
        show_progress_on: Component | Sequence[Component] | None = None,
        queue: bool | None = None,
        batch: bool = False,
        max_batch_size: int = 4,
        preprocess: bool = True,
        postprocess: bool = True,
        cancels: dict[str, Any] | list[dict[str, Any]] | None = None,
        every: Timer | float | None = None,
        trigger_mode: Literal["once", "multiple", "always_last"] | None = None,
        js: str | Literal[True] | None = None,
        concurrency_limit: int | None | Literal["default"] = "default",
        concurrency_id: str | None = None,
        api_visibility: Literal["public", "private", "undocumented"] = "public",
        key: int | str | tuple[int | str, ...] | None = None,
        api_description: str | None | Literal[False] = None,
        validator: Callable[..., Any] | None = None,
    
        ) -> Dependency:
        """
        Parameters:
            fn: the function to call when this event is triggered. Often a machine learning model's prediction function. Each parameter of the function corresponds to one input component, and the function should return a single value or a tuple of values, with each element in the tuple corresponding to one output component.
            inputs: list of gradio.components to use as inputs. If the function takes no inputs, this should be an empty list.
            outputs: list of gradio.components to use as outputs. If the function returns no outputs, this should be an empty list.
            api_name: defines how the endpoint appears in the API docs. Can be a string or None. If set to a string, the endpoint will be exposed in the API docs with the given name. If None (default), the name of the function will be used as the API endpoint.
            scroll_to_output: if True, will scroll to output component on completion
            show_progress: how to show the progress animation while event is running: "full" shows a spinner which covers the output component area as well as a runtime display in the upper right corner, "minimal" only shows the runtime display, "hidden" shows no progress animation at all
            show_progress_on: Component or list of components to show the progress animation on. If None, will show the progress animation on all of the output components.
            queue: if True, will place the request on the queue, if the queue has been enabled. If False, will not put this event on the queue, even if the queue has been enabled. If None, will use the queue setting of the gradio app.
            batch: if True, then the function should process a batch of inputs, meaning that it should accept a list of input values for each parameter. The lists should be of equal length (and be up to length `max_batch_size`). The function is then *required* to return a tuple of lists (even if there is only 1 output component), with each list in the tuple corresponding to one output component.
            max_batch_size: maximum number of inputs to batch together if this is called from the queue (only relevant if batch=True)
            preprocess: if False, will not run preprocessing of component data before running 'fn' (e.g. leaving it as a base64 string if this method is called with the `Image` component).
            postprocess: if False, will not run postprocessing of component data before returning 'fn' output to the browser.
            cancels: a list of other events to cancel when this listener is triggered. For example, setting cancels=[click_event] will cancel the click_event, where click_event is the return value of another components .click method. Functions that have not yet run (or generators that are iterating) will be cancelled, but functions that are currently running will be allowed to finish.
            every: continuously calls `value` to recalculate it if `value` is a function (has no effect otherwise). Can provide a Timer whose tick resets `value`, or a float that provides the regular interval for the reset Timer.
            trigger_mode: if "once" (default for all events except `.change()`) would not allow any submissions while an event is pending. If set to "multiple", unlimited submissions are allowed while pending, and "always_last" (default for `.change()` and `.key_up()` events) would allow a second submission after the pending event is complete.
            js: optional frontend js method to run before running 'fn'. Input arguments for js method are values of 'inputs' and 'outputs', return should be a list of values for output components.
            concurrency_limit: if set, this is the maximum number of this event that can be running simultaneously. Can be set to None to mean no concurrency_limit (any number of this event can be running simultaneously). Set to "default" to use the default concurrency limit (defined by the `default_concurrency_limit` parameter in `Blocks.queue()`, which itself is 1 by default).
            concurrency_id: if set, this is the id of the concurrency group. Events with the same concurrency_id will be limited by the lowest set concurrency_limit.
            api_visibility: controls the visibility and accessibility of this endpoint. Can be "public" (shown in API docs and callable by clients), "private" (hidden from API docs and not callable by the Gradio client libraries), or "undocumented" (hidden from API docs but callable by clients and via gr.load). If fn is None, api_visibility will automatically be set to "private".
            key: A unique key for this event listener to be used in @gr.render(). If set, this value identifies an event as identical across re-renders when the key is identical.
            api_description: Description of the API endpoint. Can be a string, None, or False. If set to a string, the endpoint will be exposed in the API docs with the given description. If None, the function's docstring will be used as the API endpoint description. If False, then no description will be displayed in the API docs.
            validator: Optional validation function to run before the main function. If provided, this function will be executed first with queue=False, and only if it completes successfully will the main function be called. The validator receives the same inputs as the main function.
        
        """
        ...