declare module '@tensei/common/events' {
  import { DataPayload, Config } from '@tensei/common/config'

  type EventListener<Payload = DataPayload> = (data: {
    payload: Payload
    ctx: Config
  }) => void | Promise<void>

  export interface EventConfigContract<Payload> {
    name: string
    listeners: EventListener<Payload>[]
  }

  export interface EventContract<Payload = DataPayload> {
    config: EventConfigContract<Payload>
    listen(listener: EventListener<Payload>): this
  }

  export const event: <Payload = DataPayload>(
    name: string
  ) => EventContract<Payload>
}