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

"use strict";

// NB: This uses some ugly hacks to get into the CUI module from elsewhere...
// don't try this at home, kids.
function test() {
  // Customize something to make sure stuff changed:
  CustomizableUI.addWidgetToArea("feed-button", CustomizableUI.AREA_NAVBAR);

  // Check what version we're on:
  let CustomizableUIBSPass = Cu.import("resource:///modules/CustomizableUI.jsm", {});

  is(CustomizableUIBSPass.gFuturePlacements.size, 0,
     "All future placements should be dealt with by now.");

  let {CustomizableUIInternal, gFuturePlacements, gPalette} = CustomizableUIBSPass;
  CustomizableUIInternal._introduceNewBuiltinWidgets();
  is(gFuturePlacements.size, 0,
     "No change to future placements initially.");

  let currentVersion = CustomizableUIBSPass.kVersion;


  // Add our widget to the defaults:
  let testWidgetNew = {
    id: "test-messing-with-default-placements-new",
    label: "Test messing with default placements - should be inserted",
    defaultArea: CustomizableUI.AREA_NAVBAR,
    introducedInVersion: currentVersion + 1,
  };

  let normalizedWidget = CustomizableUIInternal.normalizeWidget(testWidgetNew,
                                                                CustomizableUI.SOURCE_BUILTIN);
  ok(normalizedWidget, "Widget should be normalizable");
  if (!normalizedWidget) {
    return;
  }
  CustomizableUIBSPass.gPalette.set(testWidgetNew.id, normalizedWidget);

  let testWidgetOld = {
    id: "test-messing-with-default-placements-old",
    label: "Test messing with default placements - should NOT be inserted",
    defaultArea: CustomizableUI.AREA_NAVBAR,
    introducedInVersion: currentVersion,
  };

  normalizedWidget = CustomizableUIInternal.normalizeWidget(testWidgetOld,
                                                            CustomizableUI.SOURCE_BUILTIN);
  ok(normalizedWidget, "Widget should be normalizable");
  if (!normalizedWidget) {
    return;
  }
  CustomizableUIBSPass.gPalette.set(testWidgetOld.id, normalizedWidget);


  // Now increase the version in the module:
  CustomizableUIBSPass.kVersion++;

  let hadSavedState = !!CustomizableUIBSPass.gSavedState
  if (!hadSavedState) {
    CustomizableUIBSPass.gSavedState = {currentVersion: CustomizableUIBSPass.kVersion - 1};
  }

  // Then call the re-init routine so we re-add the builtin widgets
  CustomizableUIInternal._introduceNewBuiltinWidgets();
  is(gFuturePlacements.size, 1,
     "Should have 1 more future placement");
  let haveNavbarPlacements = gFuturePlacements.has(CustomizableUI.AREA_NAVBAR);
  ok(haveNavbarPlacements, "Should have placements for nav-bar");
  if (haveNavbarPlacements) {
    let placements = [...gFuturePlacements.get(CustomizableUI.AREA_NAVBAR)];

    // Ignore widgets that are placed using the pref facility and not the
    // versioned facility.  They're independent of kVersion and the saved
    // state's current version, so they may be present in the placements.
    for (let i = 0; i < placements.length; ) {
      if (placements[i] == testWidgetNew.id) {
        i++;
        continue;
      }
      let pref = "browser.toolbarbuttons.introduced." + placements[i];
      let introduced = false;
      try {
        introduced = Services.prefs.getBoolPref(pref);
      } catch (ex) {}
      if (!introduced) {
        i++;
        continue;
      }
      placements.splice(i, 1);
    }

    is(placements.length, 1, "Should have 1 newly placed widget in nav-bar");
    is(placements[0], testWidgetNew.id, "Should have our test widget to be placed in nav-bar");
  }

  gFuturePlacements.delete(CustomizableUI.AREA_NAVBAR);
  CustomizableUIBSPass.kVersion--;
  gPalette.delete(testWidgetNew.id);
  gPalette.delete(testWidgetOld.id);
  if (!hadSavedState) {
    CustomizableUIBSPass.gSavedState = null;
  }
}