import { useEffect, useRef } from 'react';
import { useSetAtom } from 'jotai';
import { CallEmbed } from '../plugins/call';
import { useCallHangupEvent } from './useCallEmbed';
import { toastQueueAtom } from '../state/toast';
import { describeCallEnd } from '../utils/callSummary';

// The fork sends io.lotus.call_summary on SFU disconnect, which normally lands
// before Element Call's hangup echo; give a late one this long before toasting.
const SUMMARY_GRACE_MS = 400;

/**
 * [Gitea #143] "Call ended · 41 min · connection was good" in the existing
 * toast style when a call you were in ends. Duration comes from our own
 * join clock; the quality readout from the fork, if it arrived.
 */
export function useCallEndedToast(embed: CallEmbed): void {
  const setToast = useSetAtom(toastQueueAtom);
  const fired = useRef(false);

  useEffect(() => {
    fired.current = false;
  }, [embed]);

  useCallHangupEvent(embed, () => {
    if (fired.current || !embed.joined || embed.joinedAt === undefined) return;
    fired.current = true;
    const durationMs = Date.now() - embed.joinedAt;
    const toast = () =>
      setToast({
        id: `call-ended-${Date.now()}`,
        displayName: 'Lotus Chat',
        body: describeCallEnd(durationMs, embed.lastSummary),
        roomName: embed.room.name ?? 'Voice call',
        roomId: embed.roomId,
      });
    if (embed.lastSummary) toast();
    else setTimeout(toast, SUMMARY_GRACE_MS);
  });
}