import { Platform } from "react-native";
import { createAudioPlayer, setAudioModeAsync, type AudioPlayer } from "expo-audio";
import * as Haptics from "expo-haptics";

// Preloaded one-shot players. Created on first prime() call, which must happen
// in response to a user gesture (the PIN login tap) so web autoplay policies
// allow later programmatic playback.
let successPlayer: AudioPlayer | null = null;
let errorPlayer: AudioPlayer | null = null;
let primed = false;

export async function primeFeedback(): Promise<void> {
  if (primed) return;
  primed = true;
  try {
    await setAudioModeAsync({ playsInSilentMode: true });
  } catch {
    /* not fatal */
  }
  try {
    successPlayer = createAudioPlayer(require("../assets/sounds/success.wav"));
    errorPlayer = createAudioPlayer(require("../assets/sounds/error.wav"));
    // Nudge the web audio context alive with a muted play/pause.
    if (Platform.OS === "web") {
      for (const p of [successPlayer, errorPlayer]) {
        try {
          p.volume = 0;
          p.play();
          p.pause();
          p.seekTo(0);
          p.volume = 1;
        } catch {
          /* ignore */
        }
      }
    }
  } catch {
    /* audio unavailable; feedback falls back to haptics/visual only */
  }
}

function replay(player: AudioPlayer | null): void {
  if (!player) return;
  try {
    player.seekTo(0);
    player.play();
  } catch {
    /* ignore */
  }
}

export function feedbackSuccess(): void {
  replay(successPlayer);
  if (Platform.OS !== "web") {
    Haptics.notificationAsync(Haptics.NotificationFeedbackType.Success).catch(() => {});
  }
}

export function feedbackError(): void {
  replay(errorPlayer);
  if (Platform.OS !== "web") {
    Haptics.notificationAsync(Haptics.NotificationFeedbackType.Error).catch(() => {});
  }
}