export function formatTime(ms: number) {
  const abs = Math.abs(ms);
  const totalSeconds = Math.floor(abs / 1000);
  const hours = Math.floor(totalSeconds / 3600);
  const minutes = Math.floor((totalSeconds % 3600) / 60);
  const seconds = totalSeconds % 60;
  const milliseconds = Math.floor(abs % 1000);

  return {
    hours: hours.toString().padStart(2, "0"),
    minutes: minutes.toString().padStart(2, "0"),
    seconds: seconds.toString().padStart(2, "0"),
    milliseconds: milliseconds.toString().padStart(3, "0"),
    full: `${hours.toString().padStart(2, "0")}:${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}.${milliseconds.toString().padStart(3, "0")}`,
  };
}

export function playAlarm() {
  try {
    const ctx = new (window.AudioContext || (window as unknown as { webkitAudioContext: typeof AudioContext }).webkitAudioContext)();
    const playBeep = (freq: number, startTime: number, duration: number) => {
      const osc = ctx.createOscillator();
      const gain = ctx.createGain();
      osc.connect(gain);
      gain.connect(ctx.destination);
      osc.frequency.value = freq;
      osc.type = "sine";
      gain.gain.setValueAtTime(0.3, startTime);
      gain.gain.exponentialRampToValueAtTime(0.01, startTime + duration);
      osc.start(startTime);
      osc.stop(startTime + duration);
    };
    const now = ctx.currentTime;
    playBeep(880, now, 0.15);
    playBeep(880, now + 0.25, 0.15);
    playBeep(1100, now + 0.5, 0.15);
    playBeep(880, now + 0.75, 0.15);
    playBeep(880, now + 1.0, 0.15);
    playBeep(1100, now + 1.25, 0.3);
    setTimeout(() => ctx.close(), 3000);
  } catch {
    // Audio not available
  }
}

export function requestNotificationPermission() {
  if (typeof window !== "undefined" && "Notification" in window) {
    if (Notification.permission === "default") {
      Notification.requestPermission();
    }
  }
}

export function sendNotification(label: string) {
  if (typeof window !== "undefined" && "Notification" in window) {
    if (Notification.permission === "granted") {
      new Notification("⏰ Minuteur terminé", {
        body: label ? `${label} est terminé !` : "Le minuteur est terminé !",
      });
    }
  }
}

export function toggleFullscreen() {
  if (!document.fullscreenElement) {
    document.documentElement.requestFullscreen().catch(() => {});
  } else {
    document.exitFullscreen().catch(() => {});
  }
}

export function copyToClipboard(text: string): Promise<boolean> {
  return navigator.clipboard
    .writeText(text)
    .then(() => true)
    .catch(() => false);
}