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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
const WORKER_BODY = `
onactivate = function(event) {
let promise = clients.matchAll({includeUncontrolled: true}).then(function(clients) {
for (i = 0; i < clients.length; i++) {
clients[i].postMessage({version: version});
}
}).then(function() {
return self.registration.update();
});
event.waitUntil(promise);
};
`;
function handleRequest(request, response) {
if (request.queryString == "clearcounter") {
setState("count", "1");
response.write("ok");
return;
}
let count = getState("count");
if (count === "") {
count = 1;
} else {
count = parseInt(count);
}
let worker = "var version = " + count + ";\n";
worker = worker + WORKER_BODY;
// This header is necessary for making this script able to be loaded.
response.setHeader("Content-Type", "application/javascript");
// If this is the first request, return the first source.
response.write(worker);
setState("count", "" + (count + 1));
}