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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-settings-view</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<link rel="import" href="gr-menu-editor.html">

<script>void(0);</script>

<test-fixture id="basic">
  <template>
    <gr-menu-editor></gr-menu-editor>
  </template>
</test-fixture>

<script>
  suite('gr-settings-view tests', () => {
    let element;
    let menu;

    function assertMenuNamesEqual(element, expected) {
      const names = element.menuItems.map(i => { return i.name; });
      assert.equal(names.length, expected.length);
      for (let i = 0; i < names.length; i++) {
        assert.equal(names[i], expected[i]);
      }
    }

    // Click the up/down button (according to direction) for the index'th row.
    // The index of the first row is 0, corresponding to the array.
    function move(element, index, direction) {
      const selector =
          'tr:nth-child(' + (index + 1) + ') .move' + direction + 'Button';
      const button = element.$$('tbody').querySelector(selector);
      MockInteractions.tap(button);
    }

    setup(() => {
      element = fixture('basic');
      menu = [
        {url: '/first/url', name: 'first name', target: '_blank'},
        {url: '/second/url', name: 'second name', target: '_blank'},
        {url: '/third/url', name: 'third name', target: '_blank'},
      ];
      element.set('menuItems', menu);
      Polymer.dom.flush();
    });

    test('renders', () => {
      const rows = element.$$('tbody').querySelectorAll('tr');
      let tds;

      assert.equal(rows.length, menu.length);
      for (let i = 0; i < menu.length; i++) {
        tds = rows[i].querySelectorAll('td');
        assert.equal(tds[0].textContent, menu[i].name);
        assert.equal(tds[1].textContent, menu[i].url);
      }

      assert.isTrue(element._computeAddDisabled(element._newName,
          element._newUrl));
    });

    test('_computeAddDisabled', () => {
      assert.isTrue(element._computeAddDisabled('', ''));
      assert.isTrue(element._computeAddDisabled('name', ''));
      assert.isTrue(element._computeAddDisabled('', 'url'));
      assert.isFalse(element._computeAddDisabled('name', 'url'));
    });

    test('add a new menu item', () => {
      const newName = 'new name';
      const newUrl = 'new url';

      element._newName = newName;
      element._newUrl = newUrl;
      assert.isFalse(element._computeAddDisabled(element._newName,
          element._newUrl));

      const originalMenuLength = element.menuItems.length;

      element._handleAddButton();

      assert.equal(element.menuItems.length, originalMenuLength + 1);
      assert.equal(element.menuItems[element.menuItems.length - 1].name,
          newName);
      assert.equal(element.menuItems[element.menuItems.length - 1].url, newUrl);
    });

    test('move items down', () => {
      assertMenuNamesEqual(element,
          ['first name', 'second name', 'third name']);

      // Move the middle item down
      move(element, 1, 'Down');
      assertMenuNamesEqual(element,
          ['first name', 'third name', 'second name']);

      // Moving the bottom item down is a no-op.
      move(element, 2, 'Down');
      assertMenuNamesEqual(element,
          ['first name', 'third name', 'second name']);
    });

    test('move items up', () => {
      assertMenuNamesEqual(element,
          ['first name', 'second name', 'third name']);

      // Move the last item up twice to be the first.
      move(element, 2, 'Up');
      move(element, 1, 'Up');
      assertMenuNamesEqual(element,
          ['third name', 'first name', 'second name']);

      // Moving the top item up is a no-op.
      move(element, 0, 'Up');
      assertMenuNamesEqual(element,
          ['third name', 'first name', 'second name']);
    });

    test('remove item', () => {
      assertMenuNamesEqual(element,
          ['first name', 'second name', 'third name']);

      // Tap the delete button for the middle item.
      MockInteractions.tap(
          element.$$('tbody').querySelector('tr:nth-child(2) .remove-button'));

      assertMenuNamesEqual(element, ['first name', 'third name']);

      // Delete remaining items.
      for (let i = 0; i < 2; i++) {
        MockInteractions.tap(
            element.$$('tbody').querySelector('tr:first-child .remove-button'));
      }
      assertMenuNamesEqual(element, []);

      // Add item to empty menu.
      element._newName = 'new name';
      element._newUrl = 'new url';
      element._handleAddButton();
      assertMenuNamesEqual(element, ['new name']);
    });
  });
</script>