import { createSignal, createEffect, onCleanup } from "solid-js"
import type { PublishedProfile } from "@welshman/util"
import { pubkey, deriveProfile, deriveProfileDisplay } from "@welshman/app"
import { useReadable } from "./lib/stores"

export function useActivePubkey(): () => string {
  const pk = useReadable(pubkey)
  return () => pk() ?? ""
}

export function useAutoThreshold(members: () => string[]): [() => number, (n: number) => void] {
  const [threshold, setThreshold] = createSignal(1)
  createEffect(() => setThreshold(Math.max(1, Math.floor(members().length * 2 / 3))))
  return [threshold, setThreshold]
}

export function useProfile(pubkeyFn: () => string): () => PublishedProfile | undefined {
  const [profile, setProfile] = createSignal<PublishedProfile | undefined>()
  createEffect(() => {
    const pk = pubkeyFn()
    if (!pk) { setProfile(undefined); return }
    onCleanup(deriveProfile(pk).subscribe(p => setProfile(() => p)))
  })
  return profile
}

export function useProfileDisplay(pubkeyFn: () => string): () => string {
  const [name, setName] = createSignal("")
  createEffect(() => {
    const pk = pubkeyFn()
    if (!pk) { setName(""); return }
    onCleanup(deriveProfileDisplay(pk).subscribe(n => setName(() => n)))
  })
  return name
}