let deferredInstallPrompt = null;
const installToast = document.getElementById('installToast');
const installBtn = document.getElementById('installBtn');
const installClose = document.getElementById('installClose');

function isAppInstalled(){
  return window.matchMedia('(display-mode: standalone)').matches || window.navigator.standalone === true;
}

function showInstallToast(){
  if(isAppInstalled()){
    installToast.classList.remove('show');
    return;
  }
  installToast.classList.add('show');
}

window.addEventListener('beforeinstallprompt', function(e){
  e.preventDefault();
  deferredInstallPrompt = e;

  if(!isAppInstalled()){
    setTimeout(showInstallToast, 1200);
  }
});

installBtn.addEventListener('click', async function(){
  if(deferredInstallPrompt){
    deferredInstallPrompt.prompt();
    const choice = await deferredInstallPrompt.userChoice;

    if(choice.outcome === 'accepted'){
      installToast.classList.remove('show');
    }else{
      showInstallToast();
    }

    deferredInstallPrompt = null;
  }else{
    alert('من المتصفح اضغط القائمة ثم اختر: إضافة إلى الشاشة الرئيسية');
  }
});

installClose.addEventListener('click', function(){
  installToast.classList.remove('show');

  setTimeout(function(){
    if(!isAppInstalled()){
      showInstallToast();
    }
  }, 60000);
});

window.addEventListener('appinstalled', function(){
  installToast.classList.remove('show');
});

setTimeout(function(){
  if(!isAppInstalled()){
    showInstallToast();
  }
}, 2500);