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/* eslint-env worker */

// Any copyright is dedicated to the Public Domain.
// http://creativecommons.org/publicdomain/zero/1.0/
//
// ServiceWorker equivalent of worker_wrapper.js.

var client;
var context;

function ok(a, msg) {
  client.postMessage({
    type: "status",
    status: !!a,
    msg: a + ": " + msg,
    context,
  });
}

function is(a, b, msg) {
  client.postMessage({
    type: "status",
    status: a === b,
    msg: a + " === " + b + ": " + msg,
    context,
  });
}

function workerTestArrayEquals(a, b) {
  if (!Array.isArray(a) || !Array.isArray(b) || a.length != b.length) {
    return false;
  }
  for (var i = 0, n = a.length; i < n; ++i) {
    if (a[i] !== b[i]) {
      return false;
    }
  }
  return true;
}

function testDone() {
  client.postMessage({ type: "finish", context });
}

function workerTestGetPrefs(prefs, cb) {
  addEventListener("message", function workerTestGetPrefsCB(e) {
    if (
      e.data.type != "returnPrefs" ||
      !workerTestArrayEquals(prefs, e.data.prefs)
    ) {
      return;
    }
    removeEventListener("message", workerTestGetPrefsCB);
    cb(e.data.result);
  });
  client.postMessage({
    type: "getPrefs",
    context,
    prefs,
  });
}

function workerTestGetPermissions(permissions, cb) {
  addEventListener("message", function workerTestGetPermissionsCB(e) {
    if (
      e.data.type != "returnPermissions" ||
      !workerTestArrayEquals(permissions, e.data.permissions)
    ) {
      return;
    }
    removeEventListener("message", workerTestGetPermissionsCB);
    cb(e.data.result);
  });
  client.postMessage({
    type: "getPermissions",
    context,
    permissions,
  });
}

function workerTestGetUserAgent(cb) {
  addEventListener("message", function workerTestGetUserAgentCB(e) {
    if (e.data.type !== "returnUserAgent") {
      return;
    }
    removeEventListener("message", workerTestGetUserAgentCB);
    cb(e.data.result);
  });
  client.postMessage({
    context,
    type: "getUserAgent",
  });
}

var completeInstall = null;

addEventListener("message", function workerWrapperOnMessage(e) {
  removeEventListener("message", workerWrapperOnMessage);
  var data = e.data;
  function runScript() {
    try {
      importScripts(data.script);
    } catch (err) {
      client.postMessage({
        type: "status",
        status: false,
        context,
        msg:
          "worker failed to import " + data.script + "; error: " + err.message,
      });
    }
  }
  if ("ServiceWorker" in self) {
    self.clients
      .matchAll({ includeUncontrolled: true })
      .then(function (clients) {
        for (var i = 0; i < clients.length; ++i) {
          if (clients[i].url.indexOf("message_receiver.html") > -1) {
            client = clients[i];
            break;
          }
        }
        if (!client) {
          dump(
            "We couldn't find the message_receiver window, the test will fail\n"
          );
        }
        context = "ServiceWorker";
        runScript();
        completeInstall();
      });
  } else {
    client = self;
    context = "Worker";
    runScript();
  }
});

addEventListener("install", e => {
  e.waitUntil(new Promise(resolve => (completeInstall = resolve)));
});