var appStoreLinks = (function () {
  let playStoreUrl = "https://play.google.com/store/apps/details?id=com.citic.inmotion";
  let deepPlayStoreUrl = "market://details?id=com.citic.inmotion"
  let appStoreUrl = "https://apps.apple.com/us/app/inmotion-by-cncbi/id1294956074?ls=1";
  let appGalleryUrl = "https://appgallery.huawei.com/#/app/C103527827";

  let redirectUrl = "https://www.cncbinternational.com/personal/redirect/download-redirect.html";
  let websiteUrl = "https://www.cncbinternational.com/personal/e-banking/inmotion/tc/index.html";

  const keyValRule = /^[\w_-]+$/
  const urlParams = new URLSearchParams(location.search);
  let referrer = urlParams.get("referrer") || "";

  if (referrer) {
    const referrerParams = new URLSearchParams(referrer);
    for (const [key, value] of referrerParams.entries()) {
      if (!keyValRule.test(key) || !keyValRule.test(value)) {
        referrer = ""
        break
      }
    }
    if (referrer) {
      referrer = referrerParams.toString()
    }
  }

  function getInmotionLink() {
    return "inmotion://?referrer=" + encodeURIComponent(referrer);
  }

  function getPlayStoreUrl() {
    if (referrer) {
      return playStoreUrl + "&referrer=" + encodeURIComponent(referrer);
    } else {
      return playStoreUrl
    }
  }

  function getDeepPlayStoreUrl() {
    if (referrer) {
      return deepPlayStoreUrl + "&referrer=" + encodeURIComponent(referrer);
    } else {
      return deepPlayStoreUrl;
    }
  }

  function getAppStoreUrl() {
    // TODO: Update later...
    return appStoreUrl;
  }

  function getAppGallery() {
    // Referrer is not supoort for AppGallery
    return appGalleryUrl;
  }

  function getRedirect() {
    return redirectUrl + "?referrer=" + encodeURIComponent(referrer);
  }

  function createRedirectQrCode(id, width, height) {
    if (typeof QRCode === "undefined") return;

    return new QRCode(document.getElementById(id), {
      text: getRedirect(),
      width: width,
      height: height,
    });
  }

  function getWebsiteUrl() {
    if (referrer) {
      if (websiteUrl.includes('?')) {
        return websiteUrl + "&referrer=" + encodeURIComponent(referrer);
      } else {
        return websiteUrl + "?referrer=" + encodeURIComponent(referrer);
      }
    } else {
      return websiteUrl;
    }
  }

  function gotoPlayStore(doneCb) {
    location.href = getInmotionLink()
    setTimeout(function () {
      if (!document.hasFocus()) return

      location.href = getDeepPlayStoreUrl()
      setTimeout(function () {
        if (!document.hasFocus()) return

        location.href = getPlayStoreUrl()
        if (typeof doneCb === "function") doneCb()
      }, 1000)
    }, 1000)
  }

  function gotoAppStore(doneCb) {
    location.href = getAppStoreUrl()
    if (typeof doneCb === "function") doneCb()
  }

  function gotoAppGallery(doneCb) {
    location.href = getInmotionLink()
    setTimeout(function () {
      if (!document.hasFocus()) return

      location.href = getAppGallery()
      if (typeof doneCb === "function") doneCb();
    }, 1000)
  }

  function gotoAnyAppStore(doneCb) {
    var userAgent = navigator.userAgent || navigator.vendor || window.opera;

    // iPad
    if (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1) {
      gotoAppStore();
      if (typeof doneCb === "function") doneCb("ios");
    }
    // iOS detection
    else if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) {
      gotoAppStore();
      if (typeof doneCb === "function") doneCb("ios");
    }
    // Android detection
    else if (/android/i.test(userAgent)) {
      gotoPlayStore(function () {
        if (typeof doneCb === "function") doneCb("android");
      });
    }
    // Fallback for other devices (e.g., desktop)
    else {
      location.href = getWebsiteUrl();
      if (typeof doneCb === "function") doneCb("website");
    }
  }

  return {
    gotoPlayStore,
    gotoAppStore,
    gotoAppGallery,
    gotoAnyAppStore,
    getPlayStoreUrl,
    getDeepPlayStoreUrl,
    getAppStoreUrl,
    getAppGallery,
    getRedirect,
    createRedirectQrCode,
    getWebsiteUrl,
    getInmotionLink
  }
})()