import { EventStream, EventStreamSeed } from "."
import { valueEvent, Scope } from "./abstractions"
import { applyScopeMaybe } from "./applyscope"
import { EventStreamSeedImpl } from "./eventstream"
import GlobalScheduler from "./scheduler"

export function interval<V>(
  delay: number,
  value: V,
  scope: Scope
): EventStream<V>
export function interval<V>(delay: number, value: V): EventStreamSeed<V>
export function interval<V>(delay: number, value: V, scope?: Scope): any {
  return applyScopeMaybe(
    new EventStreamSeedImpl(
      ["interval", [delay, value]],
      (onValue, onError) => {
        const interval = GlobalScheduler.scheduler.setInterval(
          () => onValue(value),
          delay
        )
        return () => GlobalScheduler.scheduler.clearInterval(interval)
      }
    ),
    scope
  )
}