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

function SHistoryListener() {}

SHistoryListener.prototype = {
  retval: true,
  last: "initial",

  OnHistoryNewEntry(aNewURI) {
    this.last = "newentry";
  },

  OnHistoryGotoIndex() {
    this.last = "gotoindex";
  },

  OnHistoryPurge() {
    this.last = "purge";
  },

  OnHistoryReload() {
    this.last = "reload";
    return this.retval;
  },

  OnHistoryReplaceEntry() {},

  QueryInterface: ChromeUtils.generateQI([
    Ci.nsISHistoryListener,
    Ci.nsISupportsWeakReference,
  ]),
};

let testAPI = {
  shistory: null,
  listeners: [new SHistoryListener(), new SHistoryListener()],

  init() {
    this.shistory = docShell.QueryInterface(Ci.nsIWebNavigation).sessionHistory;
    for (let listener of this.listeners) {
      this.shistory.legacySHistory.addSHistoryListener(listener);
    }
  },

  cleanup() {
    for (let listener of this.listeners) {
      this.shistory.legacySHistory.removeSHistoryListener(listener);
    }
    this.shistory = null;
    sendAsyncMessage("bug422543:cleanup:return", {});
  },

  getListenerStatus() {
    sendAsyncMessage(
      "bug422543:getListenerStatus:return",
      this.listeners.map(l => l.last)
    );
  },

  resetListeners() {
    for (let listener of this.listeners) {
      listener.last = "initial";
    }

    sendAsyncMessage("bug422543:resetListeners:return", {});
  },

  notifyReload() {
    let history = this.shistory.legacySHistory;
    let rval = history.notifyOnHistoryReload();
    sendAsyncMessage("bug422543:notifyReload:return", { rval });
  },

  setRetval({ num, val }) {
    this.listeners[num].retval = val;
    sendAsyncMessage("bug422543:setRetval:return", {});
  },
};

addMessageListener("bug422543:cleanup", () => {
  testAPI.cleanup();
});
addMessageListener("bug422543:getListenerStatus", () => {
  testAPI.getListenerStatus();
});
addMessageListener("bug422543:notifyReload", () => {
  testAPI.notifyReload();
});
addMessageListener("bug422543:resetListeners", () => {
  testAPI.resetListeners();
});
addMessageListener("bug422543:setRetval", msg => {
  testAPI.setRetval(msg.data);
});

testAPI.init();