/**
 * @license
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import '../../../test/common-test-setup-karma.js';
import '../../change/gr-change-actions/gr-change-actions.js';
import {_testOnly_initGerritPluginApi} from './gr-gerrit.js';
import {html} from '@polymer/polymer/lib/utils/html-tag.js';

const basicFixture = fixtureFromTemplate(html`
  <span hidden id="annotation-span">
    <label for="annotation-checkbox" id="annotation-label"></label>
    <iron-input type="checkbox" disabled>
      <input is="iron-input" type="checkbox" id="annotation-checkbox" disabled>
    </iron-input>
  </span>
`);

const pluginApi = _testOnly_initGerritPluginApi();

suite('gr-annotation-actions-js-api tests', () => {
  let annotationActions;

  let plugin;

  setup(() => {
    pluginApi.install(p => { plugin = p; }, '0.1',
        'http://test.com/plugins/testplugin/static/test.js');
    annotationActions = plugin.annotationApi();
  });

  teardown(() => {
    annotationActions = null;
  });

  test('add/get layer', () => {
    const str = 'lorem ipsum blah blah';
    const line = {text: str};
    const el = document.createElement('div');
    el.textContent = str;
    const changeNum = 1234;
    const patchNum = 2;
    let testLayerFuncCalled = false;

    const testLayerFunc = context => {
      testLayerFuncCalled = true;
      assert.equal(context.line, line);
      assert.equal(context.changeNum, changeNum);
      assert.equal(context.patchNum, 2);
    };
    annotationActions.addLayer(testLayerFunc);

    const annotationLayer = annotationActions.getLayer(
        '/dummy/path', changeNum, patchNum);

    const lineNumberEl = document.createElement('td');
    annotationLayer.annotate(el, lineNumberEl, line);
    assert.isTrue(testLayerFuncCalled);
  });

  test('add notifier', () => {
    const path1 = '/dummy/path1';
    const path2 = '/dummy/path2';
    const annotationLayer1 = annotationActions.getLayer(path1, 1, 2);
    const annotationLayer2 = annotationActions.getLayer(path2, 1, 2);
    const layer1Spy = sinon.spy(annotationLayer1, 'notifyListeners');
    const layer2Spy = sinon.spy(annotationLayer2, 'notifyListeners');

    let notify;
    let notifyFuncCalled;
    const notifyFunc = n => {
      notifyFuncCalled = true;
      notify = n;
    };
    annotationActions.addNotifier(notifyFunc);
    assert.isTrue(notifyFuncCalled);

    // Assert that no layers are invoked with a different path.
    notify('/dummy/path3', 0, 10, 'right');
    assert.isFalse(layer1Spy.called);
    assert.isFalse(layer2Spy.called);

    // Assert that only the 1st layer is invoked with path1.
    notify(path1, 0, 10, 'right');
    assert.isTrue(layer1Spy.called);
    assert.isFalse(layer2Spy.called);

    // Reset spies.
    layer1Spy.resetHistory();
    layer2Spy.resetHistory();

    // Assert that only the 2nd layer is invoked with path2.
    notify(path2, 0, 20, 'left');
    assert.isFalse(layer1Spy.called);
    assert.isTrue(layer2Spy.called);
  });

  test('toggle checkbox', () => {
    const fakeEl = {content: basicFixture.instantiate()};
    const hookStub = {onAttached: sinon.stub()};
    sinon.stub(plugin, 'hook').returns(hookStub);

    let checkbox;
    let onAttachedFuncCalled = false;
    const onAttachedFunc = c => {
      checkbox = c;
      onAttachedFuncCalled = true;
    };
    annotationActions.enableToggleCheckbox('test label', onAttachedFunc);
    const emulateAttached = () => hookStub.onAttached.callArgWith(0, fakeEl);
    emulateAttached();

    // Assert that onAttachedFunc is called and HTML elements have the
    // expected state.
    assert.isTrue(onAttachedFuncCalled);
    assert.equal(checkbox.id, 'annotation-checkbox');
    assert.isTrue(checkbox.disabled);
    assert.equal(document.getElementById('annotation-label').textContent,
        'test label');
    assert.isFalse(document.getElementById('annotation-span').hidden);

    // Assert that error is shown if we try to enable checkbox again.
    onAttachedFuncCalled = false;
    annotationActions.enableToggleCheckbox('test label2', onAttachedFunc);
    const errorStub = sinon.stub(
        console, 'error').callsFake((msg, err) => undefined);
    emulateAttached();
    assert.isTrue(
        errorStub.calledWith(
            'annotation-span is already enabled. Cannot re-enable.'));
    // Assert that onAttachedFunc is not called and the label has not changed.
    assert.isFalse(onAttachedFuncCalled);
    assert.equal(document.getElementById('annotation-label').textContent,
        'test label');
  });

  test('layer notify listeners', () => {
    const annotationLayer = annotationActions.getLayer(
        '/dummy/path', 1, 2);
    let listenerCalledTimes = 0;
    const startRange = 10;
    const endRange = 20;
    const side = 'right';
    const listener = (st, end, s) => {
      listenerCalledTimes++;
      assert.equal(st, startRange);
      assert.equal(end, endRange);
      assert.equal(s, side);
    };

    // Notify with 0 listeners added.
    annotationLayer.notifyListeners(startRange, endRange, side);
    assert.equal(listenerCalledTimes, 0);

    // Add 1 listener.
    annotationLayer.addListener(listener);
    annotationLayer.notifyListeners(startRange, endRange, side);
    assert.equal(listenerCalledTimes, 1);

    // Add 1 more listener. Total 2 listeners.
    annotationLayer.addListener(listener);
    annotationLayer.notifyListeners(startRange, endRange, side);
    assert.equal(listenerCalledTimes, 3);
  });
});