// Messages (add as many as you like)
const tabMessages = [
  "👀 Miss me?",
  "✨ Still waiting…",
  "😏 Don’t ghost me.",
  "🔥 Come back 😉",
  "💋 Miss your clicks."
];

// Settings
const startDelay     = 2000;   // Wait before showing message (ms)
const rotateSpeed    = 2000;   // How fast to switch (ms)
const returnDelay    = 1000;   // Delay before title resets (ms)
const useRandom      = true;   // true = random order, false = rotate in order
const rotateMessages = true;   // true = keep rotating, false = show one only
const syncMessages   = true;   // true = sync all tabs to same message, false = independent

(function () {
  if (/Mobi|Android/i.test(navigator.userAgent)) return;

  let originalTitle = document.title;
  let index = 0;
  let lastRandom = -1;
  let interval = null;
  let startTimer = null;
  let returnTimer = null;

  function clearTimers() {
    clearInterval(interval);
    clearTimeout(startTimer);
  }

  function getMessage() {
    if (tabMessages.length === 0) return originalTitle;

    if (useRandom && tabMessages.length > 1) {
      let i;
      do { i = Math.floor(Math.random() * tabMessages.length); } while (i === lastRandom);
      lastRandom = i;
      return tabMessages[i];
    }

    const msg = tabMessages[index];
    index = (index + 1) % tabMessages.length;
    return msg;
  }

  function setMessage(msg) {
    document.title = msg;
    if (syncMessages) {
      localStorage.setItem("site_tab_message", msg);
    }
  }

  function startEffect() {
    clearTimers();

    if (tabMessages.length === 1) {
      setMessage(tabMessages[0]);
      return;
    }

    setMessage(getMessage());

    if (rotateMessages) {
      interval = setInterval(() => {
        setMessage(getMessage());
      }, rotateSpeed);
    }
  }

  function restore() {
    clearTimers();
    clearTimeout(returnTimer);
    returnTimer = setTimeout(() => {
      document.title = originalTitle;
      if (syncMessages) {
        localStorage.removeItem("site_tab_message");
      }
    }, returnDelay);
  }

  function queueStart() {
    clearTimers();
    clearTimeout(startTimer);
    startTimer = setTimeout(startEffect, startDelay);
  }

  function setActive(state) {
    localStorage.setItem("site_tab_active", state ? "1" : "0");
  }

  function isAnyTabActive() {
    return localStorage.getItem("site_tab_active") === "1";
  }

  function handleVisibility() {
    if (document.hidden) {
      if (!isAnyTabActive()) queueStart();
      setActive(false);
    } else {
      setActive(true);
      restore();
    }
  }

  window.addEventListener("storage", (e) => {
    if (e.key === "site_tab_active") {
      if (isAnyTabActive()) {
        restore();
      } else {
        queueStart();
      }
    }
    if (syncMessages && e.key === "site_tab_message" && e.newValue) {
      document.title = e.newValue;
    }
  });

  document.addEventListener("visibilitychange", handleVisibility);
  window.addEventListener("blur", handleVisibility);
  window.addEventListener("focus", handleVisibility);

  if (!document.hidden) setActive(true);
})();