frontend/script/sw-precache.js

71 lines
2.1 KiB
JavaScript

/*
Generate a caching service worker for HA
Will be called as part of build_frontend.
Expects home-assistant-polymer repo as submodule of HA repo.
Creates a caching service worker based on the CURRENT content of HA repo.
Output service worker to build/service_worker.js
*/
var crypto = require('crypto');
var fs = require('fs');
var path = require('path');
var swPrecache = require('sw-precache');
var rootDir = '..';
function md5(filename) {
return crypto.createHash('md5')
.update(fs.readFileSync(filename)).digest('hex');
}
var appPaths = {
'/': [],
'/states': [],
'/logbook': [],
'/history': [],
'/map': ['/partial-map.html'],
'/devService': ['/dev-tools.html'],
'/devState': ['/dev-tools.html'],
'/devEvent': ['/dev-tools.html'],
'/devInfo': ['/dev-tools.html'],
'/devTemplate': ['/dev-tools.html'],
};
var fingerprinted = ['frontend.html', 'mdi.html', 'core.js', 'partial-map.html',
'dev-tools.html'];
var dynamicUrlToDependencies = {};
// Have all app paths be refreshed based on if their dependencies changed
Object.keys(appPaths).forEach(ap => {
dynamicUrlToDependencies[ap] = [
rootDir + '/frontend.html', rootDir + '/core.js',
] + appPaths[ap].map(val => rootDir + val);
});
// Create fingerprinted versions of our dependencies.
fingerprinted.forEach(fn => {
var parts = path.parse(fn);
var hash = md5(rootDir + '/' + parts.name + parts.ext);
var url = '/static/' + parts.name + '-' + hash + parts.ext;
var fpath = rootDir + '/' + parts.name + parts.ext;
dynamicUrlToDependencies[url] = [fpath];
});
swPrecache.write(path.join('build', 'service_worker.js'), {
dynamicUrlToDependencies: dynamicUrlToDependencies,
staticFileGlobs: [
rootDir + '/favicon-192x192.png',
rootDir + '/webcomponents-lite.min.js',
rootDir + '/fonts/roboto/Roboto-Light.ttf',
rootDir + '/fonts/roboto/Roboto-Medium.ttf',
rootDir + '/fonts/roboto/Roboto-Regular.ttf',
rootDir + '/fonts/roboto/Roboto-Bold.ttf',
rootDir + '/images/card_media_player_bg.png',
],
stripPrefix: '..',
replacePrefix: 'static',
});