# DO NOT EDIT THIS FILE!
#
# This file is generated from the CDP specification. If you need to make
# changes, edit the generator and regenerate all of the modules.
#
# CDP domain: BackgroundService (experimental)
from __future__ import annotations
from .util import event_class, T_JSON_DICT
from dataclasses import dataclass
import enum
import typing
from . import network
from . import service_worker


class ServiceName(enum.Enum):
    '''
    The Background Service that will be associated with the commands/events.
    Every Background Service operates independently, but they share the same
    API.
    '''
    BACKGROUND_FETCH = "backgroundFetch"
    BACKGROUND_SYNC = "backgroundSync"
    PUSH_MESSAGING = "pushMessaging"
    NOTIFICATIONS = "notifications"
    PAYMENT_HANDLER = "paymentHandler"
    PERIODIC_BACKGROUND_SYNC = "periodicBackgroundSync"

    def to_json(self):
        return self.value

    @classmethod
    def from_json(cls, json):
        return cls(json)


@dataclass
class EventMetadata:
    '''
    A key-value pair for additional event information to pass along.
    '''
    key: str

    value: str

    def to_json(self):
        json = dict()
        json['key'] = self.key
        json['value'] = self.value
        return json

    @classmethod
    def from_json(cls, json):
        return cls(
            key=str(json['key']),
            value=str(json['value']),
        )


@dataclass
class BackgroundServiceEvent:
    #: Timestamp of the event (in seconds).
    timestamp: network.TimeSinceEpoch

    #: The origin this event belongs to.
    origin: str

    #: The Service Worker ID that initiated the event.
    service_worker_registration_id: service_worker.RegistrationID

    #: The Background Service this event belongs to.
    service: ServiceName

    #: A description of the event.
    event_name: str

    #: An identifier that groups related events together.
    instance_id: str

    #: A list of event-specific information.
    event_metadata: typing.List[EventMetadata]

    def to_json(self):
        json = dict()
        json['timestamp'] = self.timestamp.to_json()
        json['origin'] = self.origin
        json['serviceWorkerRegistrationId'] = self.service_worker_registration_id.to_json()
        json['service'] = self.service.to_json()
        json['eventName'] = self.event_name
        json['instanceId'] = self.instance_id
        json['eventMetadata'] = [i.to_json() for i in self.event_metadata]
        return json

    @classmethod
    def from_json(cls, json):
        return cls(
            timestamp=network.TimeSinceEpoch.from_json(json['timestamp']),
            origin=str(json['origin']),
            service_worker_registration_id=service_worker.RegistrationID.from_json(json['serviceWorkerRegistrationId']),
            service=ServiceName.from_json(json['service']),
            event_name=str(json['eventName']),
            instance_id=str(json['instanceId']),
            event_metadata=[EventMetadata.from_json(i) for i in json['eventMetadata']],
        )


def start_observing(
        service: ServiceName
    ) -> typing.Generator[T_JSON_DICT,T_JSON_DICT,None]:
    '''
    Enables event updates for the service.

    :param service:
    '''
    params: T_JSON_DICT = dict()
    params['service'] = service.to_json()
    cmd_dict: T_JSON_DICT = {
        'method': 'BackgroundService.startObserving',
        'params': params,
    }
    json = yield cmd_dict


def stop_observing(
        service: ServiceName
    ) -> typing.Generator[T_JSON_DICT,T_JSON_DICT,None]:
    '''
    Disables event updates for the service.

    :param service:
    '''
    params: T_JSON_DICT = dict()
    params['service'] = service.to_json()
    cmd_dict: T_JSON_DICT = {
        'method': 'BackgroundService.stopObserving',
        'params': params,
    }
    json = yield cmd_dict


def set_recording(
        should_record: bool,
        service: ServiceName
    ) -> typing.Generator[T_JSON_DICT,T_JSON_DICT,None]:
    '''
    Set the recording state for the service.

    :param should_record:
    :param service:
    '''
    params: T_JSON_DICT = dict()
    params['shouldRecord'] = should_record
    params['service'] = service.to_json()
    cmd_dict: T_JSON_DICT = {
        'method': 'BackgroundService.setRecording',
        'params': params,
    }
    json = yield cmd_dict


def clear_events(
        service: ServiceName
    ) -> typing.Generator[T_JSON_DICT,T_JSON_DICT,None]:
    '''
    Clears all stored data for the service.

    :param service:
    '''
    params: T_JSON_DICT = dict()
    params['service'] = service.to_json()
    cmd_dict: T_JSON_DICT = {
        'method': 'BackgroundService.clearEvents',
        'params': params,
    }
    json = yield cmd_dict


@event_class('BackgroundService.recordingStateChanged')
@dataclass
class RecordingStateChanged:
    '''
    Called when the recording state for the service has been updated.
    '''
    is_recording: bool
    service: ServiceName

    @classmethod
    def from_json(cls, json: T_JSON_DICT) -> RecordingStateChanged:
        return cls(
            is_recording=bool(json['isRecording']),
            service=ServiceName.from_json(json['service'])
        )


@event_class('BackgroundService.backgroundServiceEventReceived')
@dataclass
class BackgroundServiceEventReceived:
    '''
    Called with all existing backgroundServiceEvents when enabled, and all new
    events afterwards if enabled and recording.
    '''
    background_service_event: BackgroundServiceEvent

    @classmethod
    def from_json(cls, json: T_JSON_DICT) -> BackgroundServiceEventReceived:
        return cls(
            background_service_event=BackgroundServiceEvent.from_json(json['backgroundServiceEvent'])
        )