import type EventEmitter from 'events';

const REQUEST_TIME = 'request_time';

const SDK_CONNECTION_ID_RECEIVED = 'sdk_connection_id_received';

const DB_TIME = 'db_time';

const FUNCTION_TIME = 'function_time';

const SCHEDULER_JOB_TIME = 'scheduler_job_time';

const FEATURES_CREATED_BY_PROCESSED = 'features_created_by_processed';

const EVENTS_CREATED_BY_PROCESSED = 'events_created_by_processed';

const FRONTEND_API_REPOSITORY_CREATED = 'frontend_api_repository_created';

const PROXY_REPOSITORY_CREATED = 'proxy_repository_created';

const PROXY_FEATURES_FOR_TOKEN_TIME = 'proxy_features_for_token_time';

const STAGE_ENTERED = 'stage-entered' as const;

const USER_LOGIN = 'user-login' as const;

const EXCEEDS_LIMIT = 'exceeds-limit' as const;

const REQUEST_ORIGIN = 'request_origin' as const;

const ADDON_EVENTS_HANDLED = 'addon-event-handled' as const;

const CLIENT_METRICS_NAMEPREFIX = 'client-api-nameprefix';

const CLIENT_METRICS_TAGS = 'client-api-tags';

const CLIENT_FEATURES_MEMORY = 'client_features_memory';

const CLIENT_DELTA_MEMORY = 'client_delta_memory';

const CLIENT_REGISTERED = 'client_registered';

type MetricEvent =

| typeof CLIENT_DELTA_MEMORY;

type RequestOriginEventPayload = {

};

type MetricEventPayloads = {

[key: string]: unknown;

[REQUEST_ORIGIN]: RequestOriginEventPayload;

};

type MetricEventPayload<T extends MetricEvent> = MetricEventPayloads[T];

type MetricEventListener<T extends MetricEvent> = (

payload: MetricEventPayload<T>,

) => void;

const emitMetricEvent = <T extends MetricEvent>(

) => eventBus.emit(event, payload);

const onMetricEvent = <T extends MetricEvent>(

};

export {

REQUEST_TIME,

SDK_CONNECTION_ID_RECEIVED,

DB_TIME,

SCHEDULER_JOB_TIME,

FUNCTION_TIME,

FEATURES_CREATED_BY_PROCESSED,

EVENTS_CREATED_BY_PROCESSED,

FRONTEND_API_REPOSITORY_CREATED,

PROXY_REPOSITORY_CREATED,

PROXY_FEATURES_FOR_TOKEN_TIME,

STAGE_ENTERED,

USER_LOGIN,

EXCEEDS_LIMIT,

REQUEST_ORIGIN,

ADDON_EVENTS_HANDLED,

CLIENT_METRICS_NAMEPREFIX,

CLIENT_METRICS_TAGS,

CLIENT_FEATURES_MEMORY,

CLIENT_DELTA_MEMORY,

CLIENT_REGISTERED,

type MetricEvent,

type MetricEventPayload,

emitMetricEvent,

onMetricEvent,

};