/**
 * Bridge zwischen CallKit/ConnectionService-Events und unserer Call-Store.
 *
 * Wenn der User in der nativen Call-UI Accept/Reject/Hangup tippt, kommt das
 * NICHT über unser React-UI rein — sondern via RNCallKeep-Events. Wir
 * übersetzen die in store-Actions.
 *
 * Wird einmal app-weit im _layout.tsx aufgerufen.
 */
import { useEffect } from 'react';
import { useRouter } from 'expo-router';
import RNCallKeep from 'react-native-callkeep';
import { useCallStore } from '../stores/call';
import { setupCallKeep } from '../lib/callkit';

export function useCallKeepEvents() {
  const router = useRouter();

  useEffect(() => {
    void setupCallKeep();

    // User tippt "Annehmen" in der CallKit-/ConnectionService-UI
    const onAnswer = ({ callUUID }: { callUUID: string }) => {
      console.log('[callkeep] answer', callUUID);
      const st = useCallStore.getState();
      if (st.status !== 'incoming') return;
      // Call-Screen öffnen und Accept-Flow triggern.
      router.push('/call');
      void st.acceptCall();
    };

    // User tippt "Ablehnen" oder "Auflegen" in der nativen UI
    const onEnd = ({ callUUID }: { callUUID: string }) => {
      console.log('[callkeep] end', callUUID);
      const st = useCallStore.getState();
      if (st.status === 'idle' || st.status === 'ended') return;
      if (st.status === 'incoming') {
        st.declineCall();
      } else {
        st.hangup('ended');
      }
    };

    // User mutet/unmutet über die native UI
    const onMuted = ({ muted }: { muted: boolean; callUUID: string }) => {
      const st = useCallStore.getState();
      if (st.muted !== muted) st.toggleMute();
    };

    RNCallKeep.addEventListener('answerCall', onAnswer);
    RNCallKeep.addEventListener('endCall', onEnd);
    RNCallKeep.addEventListener('didPerformSetMutedCallAction', onMuted);
    // didActivateAudioSession kommt nach CallKit-Audio-Activation — wir nutzen
    // das (noch) nicht aktiv, weil WebRTC + InCallManager das selber regeln.

    return () => {
      RNCallKeep.removeEventListener('answerCall');
      RNCallKeep.removeEventListener('endCall');
      RNCallKeep.removeEventListener('didPerformSetMutedCallAction');
    };
  }, [router]);
}