experimental service worker offline stuff

1 files changed, 72 insertions, 0 deletions

diff --git a/worker.js b/worker.js
new file mode 100644
index 0000000..2ef4b9c
--- /dev/null
+++ b/worker.js
@@ -0,0 +1,72 @@
+var CACHE_NAME = 'epube-test';
+
+self.addEventListener('activate', function(event) {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then(function(cache) {
+		var urls = [
+			'read.html',
+			'js/read.js',
+			'js/offline.js',
+			'css/read.css',
+			'offline.html',
+			'lib/zip.min.js',
+			'lib/epub.js',
+			'lib/localforage.min.js',
+			'lib/holder.min.js',
+			'lib/smartimages.js',
+			'lib/bootstrap/v3/css/bootstrap-theme.min.css',
+			'lib/bootstrap/v3/css/bootstrap.min.css',
+			'lib/bootstrap/v3/js/jquery.js',
+			'lib/bootstrap/v3/js/bootstrap.min.js',
+			'lib/bootstrap/v3/fonts/glyphicons-halflings-regular.woff2',
+		];
+
+		return cache.addAll(urls.map(url => new Request(url, {credentials: 'same-origin'})));
+    })
+  );
+});
+
+this.addEventListener('fetch', function(event) {
+	var req = event.request.clone();
+
+	event.respondWith(
+		caches.match(req).then(function(resp) {
+			if (!navigator.onLine) {
+
+				if (resp) return resp;
+
+				console.log(req.url);
+
+				if (req.url.match("read.html")) {
+					return caches.match("read.html");
+				}
+
+				if (req.url.match("index.php")) {
+					return caches.match("offline.html");
+				}
+			}
+
+			return fetch(req)
+				.then(function(resp) {
+
+				if (req.url.match(/(getlastread|getpagination|\.epub)/)) {
+					caches.open(CACHE_NAME).then(function(cache) {
+						cache.put(event.request, resp.clone());
+					});
+				} /*else {
+					caches.match(req.url).then(function(cached) {
+						if (cached) {
+							console.log('refreshing ' + req.url);
+
+							caches.open(CACHE_NAME).then(function(cache) {
+								cache.put(event.request, resp.clone());
+							});
+						}
+					});
+				} */
+
+				return resp.clone();
+			});
+		})
+	);
+});