/**
 * @license
 * Copyright 2017 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import '../../../test/common-test-setup';
import './gr-autocomplete-dropdown';
import {GrAutocompleteDropdown} from './gr-autocomplete-dropdown';
import {
  pressKey,
  queryAll,
  queryAndAssert,
  waitEventLoop,
  waitUntil,
} from '../../../test/test-utils';
import {assertIsDefined} from '../../../utils/common-util';
import {fixture, html, assert} from '@open-wc/testing';
import {Key} from '../../../utils/dom-util';

suite('gr-autocomplete-dropdown', () => {
  suite('suggestion tests', () => {
    let element: GrAutocompleteDropdown;

    const suggestionsEl = () => queryAndAssert(element, '#suggestions');

    setup(async () => {
      element = await fixture(
        html`<gr-autocomplete-dropdown></gr-autocomplete-dropdown>`
      );
      element.open();
      element.suggestions = [
        {
          dataValue: 'test value 1',
          name: 'test name 1',
          text: '1',
          label: 'hi',
        },
        {dataValue: 'test value 2', name: 'test name 2', text: '2'},
      ];
      await waitEventLoop();
    });

    teardown(() => {
      element.close();
    });

    test('renders', () => {
      assert.shadowDom.equal(
        element,
        /* HTML */ `
          <div class="dropdown-content" id="suggestions" role="listbox">
            <ul>
              <li
                aria-label="test name 1"
                class="autocompleteOption selected"
                data-index="0"
                data-value="test value 1"
                role="option"
                tabindex="-1"
              >
                <span> 1 </span>
                <span class="label"> hi </span>
              </li>
              <li
                aria-label="test name 2"
                class="autocompleteOption"
                data-index="1"
                data-value="test value 2"
                role="option"
                tabindex="-1"
              >
                <span> 2 </span>
                <span class="hide label"> </span>
              </li>
            </ul>
          </div>
        `
      );
    });

    test('shows labels', () => {
      const els = queryAll<HTMLElement>(suggestionsEl(), 'li');
      assert.equal(els[0].innerText.trim(), '1\nhi');
      assert.equal(els[1].innerText.trim(), '2');
    });

    test('escape key close suggestions', async () => {
      const closeSpy = sinon.spy(element, 'close');
      pressKey(element, Key.ESC);
      await waitEventLoop();
      assert.isTrue(closeSpy.called);
    });

    test('tab key', () => {
      const handleTabSpy = sinon.spy(element, 'handleTab');
      const itemSelectedStub = sinon.stub();
      element.addEventListener('item-selected', itemSelectedStub);
      pressKey(element, Key.TAB);
      assert.isTrue(handleTabSpy.called);
      assert.equal(element.cursor.index, 0);
      assert.isTrue(itemSelectedStub.called);
      assert.deepEqual(itemSelectedStub.lastCall.args[0].detail, {
        trigger: 'tab',
        selected: element.getCursorTarget(),
      });
    });

    test('enter key', () => {
      const handleEnterSpy = sinon.spy(element, 'handleEnter');
      const itemSelectedStub = sinon.stub();
      element.addEventListener('item-selected', itemSelectedStub);
      pressKey(element, Key.ENTER);
      assert.isTrue(handleEnterSpy.called);
      assert.equal(element.cursor.index, 0);
      assert.deepEqual(itemSelectedStub.lastCall.args[0].detail, {
        trigger: 'enter',
        selected: element.getCursorTarget(),
      });
    });

    test('down key', () => {
      element.isHidden = true;
      const nextSpy = sinon.spy(element.cursor, 'next');
      pressKey(element, 'ArrowDown');
      assert.isFalse(nextSpy.called);
      assert.equal(element.cursor.index, 0);
      element.isHidden = false;
      pressKey(element, 'ArrowDown');
      assert.isTrue(nextSpy.called);
      assert.equal(element.cursor.index, 1);
    });

    test('up key', () => {
      element.isHidden = true;
      const prevSpy = sinon.spy(element.cursor, 'previous');
      pressKey(element, 'ArrowUp');
      assert.isFalse(prevSpy.called);
      assert.equal(element.cursor.index, 0);
      element.isHidden = false;
      element.cursor.setCursorAtIndex(1);
      assert.equal(element.cursor.index, 1);
      pressKey(element, 'ArrowUp');
      assert.isTrue(prevSpy.called);
      assert.equal(element.cursor.index, 0);
    });

    test('tapping selects item', async () => {
      const itemSelectedStub = sinon.stub();
      element.addEventListener('item-selected', itemSelectedStub);

      suggestionsEl().querySelectorAll('li')[1].click();
      await waitEventLoop();
      assert.deepEqual(itemSelectedStub.lastCall.args[0].detail, {
        trigger: 'click',
        selected: suggestionsEl().querySelectorAll('li')[1],
      });
    });

    test('tapping child still selects item', async () => {
      const itemSelectedStub = sinon.stub();
      element.addEventListener('item-selected', itemSelectedStub);
      const lastElChild = queryAll<HTMLLIElement>(suggestionsEl(), 'li')[0]
        ?.lastElementChild;
      assertIsDefined(lastElChild);
      (lastElChild as HTMLSpanElement).click();
      await waitEventLoop();
      assert.deepEqual(itemSelectedStub.lastCall.args[0].detail, {
        trigger: 'click',
        selected: queryAll<HTMLElement>(suggestionsEl(), 'li')[0],
      });
    });

    test('updated suggestions resets cursor stops', async () => {
      const resetStopsSpy = sinon.spy(element, 'computeCursorStopsAndRefit');
      element.suggestions = [];
      await waitUntil(() => resetStopsSpy.called);
    });
  });

  suite('error tests', () => {
    let element: GrAutocompleteDropdown;

    setup(async () => {
      element = await fixture(
        html`<gr-autocomplete-dropdown></gr-autocomplete-dropdown>`
      );
      element.open();
      element.errorMessage = 'Failed query error';
      await waitEventLoop();
    });

    teardown(() => {
      element.close();
    });

    test('renders error', () => {
      assert.shadowDom.equal(
        element,
        /* HTML */ `
          <div class="dropdown-content" id="suggestions" role="listbox">
            <ul>
              <li
                aria-label="autocomplete query error"
                class="query-error"
                tabindex="-1"
              >
                <span>Failed query error</span>
                <span class="label">ERROR</span>
              </li>
            </ul>
          </div>
        `
      );
    });

    test('escape key close dropdown with error', async () => {
      const closeSpy = sinon.spy(element, 'close');
      pressKey(element, Key.ESC);
      await waitEventLoop();
      assert.isTrue(closeSpy.called);
    });

    test('tab key when error shown sends no event', () => {
      const handleTabSpy = sinon.spy(element, 'handleTab');
      const itemSelectedStub = sinon.stub();
      element.addEventListener('item-selected', itemSelectedStub);
      pressKey(element, Key.TAB);
      assert.isTrue(handleTabSpy.called);
      assert.isFalse(itemSelectedStub.called);
    });

    test('enter key when error shown sends no event', () => {
      const handleEnterSpy = sinon.spy(element, 'handleEnter');
      const itemSelectedStub = sinon.stub();
      element.addEventListener('item-selected', itemSelectedStub);
      pressKey(element, Key.ENTER);
      assert.isTrue(handleEnterSpy.called);
      assert.isFalse(itemSelectedStub.called);
    });

    test('up/down disabled when error', () => {
      const nextSpy = sinon.spy(element.cursor, 'next');
      const prevSpy = sinon.spy(element.cursor, 'previous');
      pressKey(element, 'ArrowUp');
      pressKey(element, 'ArrowDown');
      assert.isFalse(nextSpy.called);
      assert.isFalse(prevSpy.called);
    });
  });
});