from ..encoder import JSONEncoder
from .publisher import Publisher
import json

publisher_ops = Publisher()


class RedisEvent():
    def __init__(self, event, event_detail_key=None, information=None) -> None:
        self.EVENTS_ENUM = [
            'SERVICE_API_AVAILABLE',
            'SERVICE_API_UNAVAILABLE',
            'SERVICE_API_UPDATE',
            'API_INVOKER_ONBOARDED',
            'API_INVOKER_OFFBOARDED',
            'SERVICE_API_INVOCATION_SUCCESS',
            'SERVICE_API_INVOCATION_FAILURE',
            'ACCESS_CONTROL_POLICY_UPDATE',
            'ACCESS_CONTROL_POLICY_UNAVAILABLE',
            'API_INVOKER_AUTHORIZATION_REVOKED',
            'API_INVOKER_UPDATED',
            'API_TOPOLOGY_HIDING_CREATED',
            'API_TOPOLOGY_HIDING_REVOKED']
        if event not in self.EVENTS_ENUM:
            raise Exception(
                "Event (" + event + ") is not on event enum (" + ','.join(self.EVENTS_ENUM) + ")")
        self.redis_event = {
            "event": event
        }
        if event_detail_key != None and information != None:
            self.redis_event['key'] = event_detail_key
            self.redis_event['information'] = information

    def to_string(self):
        return json.dumps(self.redis_event, cls=JSONEncoder)

    def send_event(self):
        publisher_ops.publish_message("events", self.to_string())

    def __call__(self):
        return self.redis_event
