import { Layer, type Context, ManagedRuntime, type Effect } from "effect"
import { memoMap } from "./memo-map"
import { Observability } from "./observability"

export function makeRuntime<I, S, E>(service: Context.Service<I, S>, layer: Layer.Layer<I, E>) {
  let rt: ManagedRuntime.ManagedRuntime<I, E> | undefined
  const getRuntime = () =>
    (rt ??= ManagedRuntime.make(Layer.provideMerge(layer, Observability.layer) as Layer.Layer<I, E>, {
      memoMap,
    }))

  return {
    runSync: <A, Err>(fn: (svc: S) => Effect.Effect<A, Err, I>) => getRuntime().runSync(service.use(fn)),
    runPromiseExit: <A, Err>(fn: (svc: S) => Effect.Effect<A, Err, I>, options?: Effect.RunOptions) =>
      getRuntime().runPromiseExit(service.use(fn), options),
    runPromise: <A, Err>(fn: (svc: S) => Effect.Effect<A, Err, I>, options?: Effect.RunOptions) =>
      getRuntime().runPromise(service.use(fn), options),
    runFork: <A, Err>(fn: (svc: S) => Effect.Effect<A, Err, I>) => getRuntime().runFork(service.use(fn)),
    runCallback: <A, Err>(fn: (svc: S) => Effect.Effect<A, Err, I>) => getRuntime().runCallback(service.use(fn)),
  }
}
