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generate-pwa.js
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generate-pwa.js
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#!/usr/bin/env node
'use strict';
const fs = require('fs');
// Copy contents of index.js, generate an index.html file and copy index.js inline
fs.readFile('./tmp/index.js', 'utf8', function (err,data) {
if (err) {
return console.log(err);
}
const html = `<!DOCTYPE html>
<html lang="en" translate="no">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<title>Bugger</title>
<meta name="description" content="Try to swat as many bugs as you can before the timer runs out. #GitHubGameOff">
<meta name="google" content="notranslate">
<link rel="apple-touch-icon" sizes="180x180" href="/img/apple-touch-icon.png">
<link rel="icon" type="image/png" sizes="32x32" href="/img/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png">
<link rel="manifest" href="/site.webmanifest">
<link rel="mask-icon" href="/img/safari-pinned-tab.svg" color="#ffffff">
<meta name="msapplication-TileColor" content="#ffffff">
<meta name="theme-color" content="#ffffff">
</head>
<body>
<div id="game" class="game"></div>
<script>
${data}
</script>
<script src="/service-worker.js"></script>
</body>
</html>`;
fs.writeFile('./dist/index.html', html, 'utf8', function (err) {
if (err) return console.log(err);
console.log('index.html has been written to dist/');
});
});
// Generate new version of service worker
const version = new Date().getTime();
const sw = `// Service Worker
var CACHE_NAME = 'v-${version}'
var urlsToCache = [
'/'
]
self.addEventListener('install', function(event) {
self.skipWaiting();
event.waitUntil(
caches.open(CACHE_NAME)
.then(function(cache) {
console.log('Opened cache', CACHE_NAME)
return cache.addAll(urlsToCache)
})
)
})
self.addEventListener('fetch', function(event) {
event.respondWith(
caches.match(event.request)
.then(function(response) {
if (response) {
console.log('Found ', event.request.url, ' in cache')
return response
}
return fetch(event.request).then(function(response) {
if(!response || response.status !== 200 || response.type !== 'basic') {
return response
}
var responseToCache = response.clone()
caches.open(CACHE_NAME)
.then(function(cache) {
cache.put(event.request, responseToCache)
})
return response
})
})
)
})
self.addEventListener('activate', (event) => {
var cacheKeeplist = [CACHE_NAME]
event.waitUntil(
caches.keys().then((keyList) => {
return Promise.all(keyList.map((key) => {
if (cacheKeeplist.indexOf(key) === -1) {
return caches.delete(key)
}
}))
})
)
})`;
fs.writeFile('./dist/sw.js', sw, 'utf8', function (err) {
if (err) return console.log(err);
console.log('sw.js has been written to dist/');
});
// Generate service worker
const serviceworker = `// Service Worker
(function(serviceWorker) {
if ('serviceWorker' in navigator) {
window.addEventListener('load', function() {
navigator.serviceWorker.register('/sw.js').then(function(registration) {
console.log('ServiceWorker registration successful with scope: ', registration.scope)
}, function(err) {
console.log('ServiceWorker registration failed: ', err)
})
})
}
})(window.serviceWorker = window.serviceWorker || {})`;
fs.writeFile('./dist/service-worker.js', serviceworker, 'utf8', function (err) {
if (err) return console.log(err);
console.log('service-worker.js has been written to dist/');
});
// Generate site.webmanifest
const sitewebmanifest = `{
"display": "standalone",
"icons": [
{
"sizes": "144x144",
"src": "/img/android-chrome-144x144.png",
"type": "image/png",
"purpose": "maskable"
},
{
"sizes": "192x192",
"src": "/img/android-chrome-192x192.png",
"type": "image/png",
"purpose": "maskable"
},
{
"sizes": "512x512",
"src": "/img/android-chrome-512x512.png",
"type": "image/png",
"purpose": "maskable"
}
],
"name": "Bugger",
"short_name": "Bugger",
"description": "Try to swat as many bugs as you can before the timer runs out. #GitHubGameOff",
"start_url": "/index.html",
"scope": "/",
"theme_color": "#ffffff",
"background_color": "#ffffff"
}`;
fs.writeFile('./dist/site.webmanifest', sitewebmanifest, 'utf8', function (err) {
if (err) return console.log(err);
console.log('site.webmanifest has been written to dist/');
});