/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */

/* eslint-env mozilla/frame-script */

const { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;

Cu.import("resource://gre/modules/Services.jsm");

var dbService = Cc["@mozilla.org/url-classifier/dbservice;1"]
                .getService(Ci.nsIUrlClassifierDBService);

var timer;
function setTimeout(callback, delay) {
  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
  timer.initWithCallback({ notify: callback },
                           delay,
                           Ci.nsITimer.TYPE_ONE_SHOT);
}

function doUpdate(update) {
  let listener = {
    QueryInterface(iid) {
      if (iid.equals(Ci.nsISupports) ||
          iid.equals(Ci.nsIUrlClassifierUpdateObserver))
        return this;

      throw Cr.NS_ERROR_NO_INTERFACE;
    },
    updateUrlRequested(url) { },
    streamFinished(status) { },
    updateError(errorCode) {
      sendAsyncMessage("updateError", errorCode);
    },
    updateSuccess(requestedTimeout) {
      sendAsyncMessage("updateSuccess");
    }
  };

  try {
    dbService.beginUpdate(listener, "test-malware-simple,test-unwanted-simple", "");
    dbService.beginStream("", "");
    dbService.updateStream(update);
    dbService.finishStream();
    dbService.finishUpdate();
  } catch (e) {
    // beginUpdate may fail if there's an existing update in progress
    // retry until success or testcase timeout.
    setTimeout(() => { doUpdate(update); }, 1000);
  }
}

function doReload() {
  try {
    dbService.reloadDatabase();
    sendAsyncMessage("reloadSuccess");
  } catch (e) {
    setTimeout(() => { doReload(); }, 1000);
  }
}

// SafeBrowsing.jsm is initialized after mozEntries are added. Add observer
// to receive "finished" event. For the case when this function is called
// after the event had already been notified, we lookup entries to see if
// they are already added to database.
function waitForInit() {
  Services.obs.addObserver(function() {
    sendAsyncMessage("safeBrowsingInited");
  }, "mozentries-update-finished");

  // This url must sync with the table, url in SafeBrowsing.jsm addMozEntries
  const table = "test-phish-simple";
  const url = "http://itisatrap.org/firefox/its-a-trap.html";

  let principal = Services.scriptSecurityManager.createCodebasePrincipal(
    Services.io.newURI(url), {});

  let listener = {
    QueryInterface(iid) {
      if (iid.equals(Ci.nsISupports) ||
        iid.equals(Ci.nsIUrlClassifierUpdateObserver))
        return this;
      throw Cr.NS_ERROR_NO_INTERFACE;
    },

    handleEvent(value) {
      if (value === table) {
        sendAsyncMessage("safeBrowsingInited");
      }
    },
  };
  dbService.lookup(principal, table, listener);
}

addMessageListener("doUpdate", ({ testUpdate }) => {
  doUpdate(testUpdate);
});

addMessageListener("doReload", () => {
  doReload();
});

addMessageListener("waitForInit", () => {
  waitForInit();
});
