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pwa_promoter.js
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pwa_promoter.js
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console.log("PWA installer registered.");
let deferredPrompt;
const addBtn = document.querySelector('.pwa-add-button');
addBtn.style.display = 'none';
let pwa_enabled = true;
if (pwa_enabled){
if ('serviceWorker' in navigator) {
window.addEventListener('load', function() {
navigator.serviceWorker.register('/sw.js').then(function(registration) {
// Registration was successful
console.log('ServiceWorker registration successful with scope: ', registration.scope);
}, function(err) {
// registration failed :(
console.log('ServiceWorker registration failed: ', err);
});
});
}
else{
console.log("Service workers not supported!");
}
window.addEventListener('beforeinstallprompt', (e) => {
// Prevent Chrome 67 and earlier from automatically showing the prompt
e.preventDefault();
// Stash the event so it can be triggered later.
deferredPrompt = e;
// Update UI to notify the user they can add to home screen
addBtn.style.display = 'block';
addBtn.addEventListener('click', (e) => {
// Analytics
try{
sa_event("pwa_clicked");
}
catch{} // We don't care
console.log("User clicked the install button.");
// hide our user interface that shows our A2HS button
addBtn.style.display = 'none';
// Show the prompt
deferredPrompt.prompt();
// Wait for the user to respond to the prompt
deferredPrompt.userChoice.then((choiceResult) => {
if (choiceResult.outcome === 'accepted') {
console.log('User accepted the A2HS prompt');
// Analytics
try{
sa_event("pwa_installed");
}
catch{} // We don't care
} else {
console.log('User dismissed the A2HS prompt');
// Analytics
try{
sa_event("pwa_canceled");
}
catch{} // We don't care
}
deferredPrompt = null;
});
});
});
}
else{
console.log("PWA functionality manually disabled.");
}