# -*- coding: utf-8 -*-

import json
from typing import Any, ClassVar, Dict, Optional, cast

from typing_extensions import Literal, TYPE_CHECKING

from stripe._stripe_object import StripeObject, UntypedStripeObject
from stripe._util import get_api_mode
from stripe._stripe_context import StripeContext

if TYPE_CHECKING:
    from stripe._stripe_client import StripeClient


# The beginning of the section generated from our OpenAPI spec
class Event(StripeObject):
    """
    Events are generated to keep you informed of activity in your business account. APIs in the /v2 namespace generate [thin events](https://docs.stripe.com/event-destinations#benefits-of-thin-events) which have small, unversioned payloads that include a reference to the ID of the object that has changed. The Events v2 API returns these new thin events. [Retrieve the event object](https://docs.stripe.com/event-destinations#fetch-data) for additional data about the event. Use the related object ID in the event payload to [fetch the API resource](https://docs.stripe.com/event-destinations#retrieve-the-object-associated-with-thin-events) of the object associated with the event. Comparatively, events generated by most API v1 include a versioned snapshot of an API object in their payload.
    You can access events through the [Retrieve Event API](https://docs.stripe.com/api/v2/core/events/retrieve) for 30 days.
    """

    OBJECT_NAME: ClassVar[Literal["v2.core.event"]] = "v2.core.event"

    class Reason(StripeObject):
        class Request(StripeObject):
            id: str
            """
            ID of the API request that caused the event.
            """
            idempotency_key: str
            """
            The idempotency key transmitted during the request.
            """

        request: Optional[Request]
        """
        Information on the API request that instigated the event.
        """
        type: Literal["request"]
        """
        Event reason type.
        """
        _inner_class_types = {"request": Request}

    changes: Optional[UntypedStripeObject[Any]]
    """
    Before and after changes for the primary related object.
    """
    context: Optional[str]
    """
    Authentication context needed to fetch the event or related object.
    """
    created: str
    """
    Time at which the object was created.
    """
    id: str
    """
    Unique identifier for the event.
    """
    livemode: bool
    """
    Has the value `true` if the object exists in live mode or the value `false` if the object exists in test mode.
    """
    object: Literal["v2.core.event"]
    """
    String representing the object's type. Objects of the same type share the same value of the object field.
    """
    reason: Optional[Reason]
    """
    Reason for the event.
    """
    type: str
    """
    The type of the event.
    """
    _inner_class_types = {"reason": Reason}


# The end of the section generated from our OpenAPI spec


class ReasonRequest:
    id: str
    idempotency_key: str

    def __init__(self, d) -> None:
        self.id = d["id"]
        self.idempotency_key = d["idempotency_key"]

    def __repr__(self) -> str:
        return f"<ReasonRequest id={self.id} idempotency_key={self.idempotency_key}>"


class Reason:
    type: Literal["request"]
    request: Optional[ReasonRequest] = None

    def __init__(self, d) -> None:
        self.type = d["type"]
        if self.type == "request":
            self.request = ReasonRequest(d["request"])

    def __repr__(self) -> str:
        return f"<Reason type={self.type} request={self.request}>"


class RelatedObject:
    id: str
    type: str
    url: str

    def __init__(self, d) -> None:
        self.id = d["id"]
        self.type = d["type"]
        self.url = d["url"]

    def __repr__(self) -> str:
        return f"<RelatedObject id={self.id} type={self.type} url={self.url}>"


class EventNotification:
    """
    EventNotification represents the json that's delivered from an Event Destination. It's a basic struct-like object with a few convenience methods. Use `fetch_event()` to get the full event object.
    """

    id: str
    """
    Unique identifier for the event.
    """
    type: str
    """
    The type of the event.
    """
    created: str
    """
    Time at which the object was created.
    """
    livemode: bool
    """
    Livemode indicates if the event is from a production(true) or test(false) account.
    """
    context: Optional[StripeContext] = None
    """
    [Optional] Authentication context needed to fetch the event or related object.
    """
    reason: Optional[Reason] = None
    """
    [Optional] Reason for the event.
    """

    def __init__(
        self, parsed_body: Dict[str, Any], client: "StripeClient"
    ) -> None:
        self.id = parsed_body["id"]
        self.type = parsed_body["type"]
        self.created = parsed_body["created"]
        self.livemode = bool(parsed_body.get("livemode"))
        context_value = parsed_body.get("context")
        if context_value:
            self.context = StripeContext.parse(context_value)

        if parsed_body.get("reason"):
            self.reason = Reason(parsed_body["reason"])

        self._client = client

    @staticmethod
    def from_json(payload: str, client: "StripeClient") -> "EventNotification":
        """
        Helper for constructing an Event Notification. Doesn't perform signature validation, so you
        should use StripeClient.parse_event_notification() instead for initial handling.
        This is useful in unit tests and working with EventNotifications that you've already validated the authenticity of.
        """
        parsed_body = json.loads(payload)
        if parsed_body.get("object") == "event":
            raise ValueError(
                "You passed a webhook payload to StripeClient.parse_event_notification, which expects a thin event notification. Use StripeClient.construct_event instead."
            )

        # circular import busting
        from stripe.events._event_classes import (
            get_v2_event_notification_class,
        )

        event_class = get_v2_event_notification_class(parsed_body["type"])

        return event_class(parsed_body, client)

    def __repr__(self) -> str:
        return f"<EventNotification id={self.id} type={self.type} created={self.created} context={self.context} reason={self.reason}>"

    def fetch_event(self) -> Event:
        response = self._client.raw_request(
            "get",
            f"/v2/core/events/{self.id}",
            stripe_context=self.context,
            headers={"Stripe-Request-Trigger": f"event={self.id}"},
            usage=["pushed_event_pull"],
        )
        return cast(Event, self._client.deserialize(response, api_mode="V2"))

    async def fetch_event_async(self) -> Event:
        response = await self._client.raw_request_async(
            "get",
            f"/v2/core/events/{self.id}",
            stripe_context=self.context,
            headers={"Stripe-Request-Trigger": f"event={self.id}"},
            usage=["pushed_event_pull", "pushed_event_pull_async"],
        )
        return cast(Event, self._client.deserialize(response, api_mode="V2"))


class UnknownEventNotification(EventNotification):
    """
    Represents an EventNotification payload that the SDK doesn't have types for. May have a related object.
    """

    related_object: Optional[RelatedObject] = None
    """
    [Optional] Object containing the reference to API resource relevant to the event.
    """

    def __init__(
        self, parsed_body: Dict[str, Any], client: "StripeClient"
    ) -> None:
        super().__init__(parsed_body, client)

        if parsed_body.get("related_object"):
            self.related_object = RelatedObject(parsed_body["related_object"])

    def fetch_related_object(self) -> Optional[StripeObject]:
        if self.related_object is None:
            return None

        response = self._client.raw_request(
            "get",
            self.related_object.url,
            stripe_context=self.context,
            headers={"Stripe-Request-Trigger": f"event={self.id}"},
            usage=["fetch_related_object", "unknown_event"],
        )
        return self._client.deserialize(
            response,
            api_mode=get_api_mode(self.related_object.url),
        )

    async def fetch_related_object_async(self) -> Optional[StripeObject]:
        if self.related_object is None:
            return None

        response = await self._client.raw_request_async(
            "get",
            self.related_object.url,
            stripe_context=self.context,
            headers={"Stripe-Request-Trigger": f"event={self.id}"},
            usage=["fetch_related_object", "unknown_event"],
        )
        return self._client.deserialize(
            response,
            api_mode=get_api_mode(self.related_object.url),
        )
