/**
 * @license
 * Copyright (C) 2018 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';
import './gr-thread-list';
import {CommentSide, SpecialFilePath} from '../../../constants/constants';
import {CommentTabState} from '../../../types/events';
import {
  compareThreads,
  GrThreadList,
  __testOnly_SortDropdownState,
} from './gr-thread-list';
import {queryAll} from '../../../test/test-utils';
import {accountOrGroupKey} from '../../../utils/account-util';
import {tap} from '@polymer/iron-test-helpers/mock-interactions';
import {
  createAccountDetailWithId,
  createParsedChange,
  createThread,
} from '../../../test/test-data-generators';
import {
  AccountId,
  NumericChangeId,
  PatchSetNum,
  Timestamp,
} from '../../../api/rest-api';
import {RobotId, UrlEncodedCommentId} from '../../../types/common';
import {CommentThread} from '../../../utils/comment-util';
import {query, queryAndAssert} from '../../../utils/common-util';
import {GrAccountLabel} from '../../shared/gr-account-label/gr-account-label';

const basicFixture = fixtureFromElement('gr-thread-list');

suite('gr-thread-list tests', () => {
  let element: GrThreadList;

  setup(async () => {
    element = basicFixture.instantiate();
    element.changeNum = 123 as NumericChangeId;
    element.change = createParsedChange();
    element.account = createAccountDetailWithId();
    element.threads = [
      {
        comments: [
          {
            path: '/COMMIT_MSG',
            author: {
              _account_id: 1000001 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 4 as PatchSetNum,
            id: 'ecf0b9fa_fe1a5f62' as UrlEncodedCommentId,
            line: 5,
            updated: '2015-12-01 15:15:15.000000000' as Timestamp,
            message: 'test',
            unresolved: true,
          },
          {
            id: '503008e2_0ab203ee' as UrlEncodedCommentId,
            path: '/COMMIT_MSG',
            line: 5,
            in_reply_to: 'ecf0b9fa_fe1a5f62' as UrlEncodedCommentId,
            updated: '2015-12-01 15:16:15.000000000' as Timestamp,
            message: 'draft',
            unresolved: true,
            __draft: true,
            patch_set: '2' as PatchSetNum,
          },
        ],
        patchNum: 4 as PatchSetNum,
        path: '/COMMIT_MSG',
        line: 5,
        rootId: 'ecf0b9fa_fe1a5f62' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            path: 'test.txt',
            author: {
              _account_id: 1000002 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 3 as PatchSetNum,
            id: '09a9fb0a_1484e6cf' as UrlEncodedCommentId,
            updated: '2015-12-02 15:16:15.000000000' as Timestamp,
            message: 'Some comment on another patchset.',
            unresolved: false,
          },
        ],
        patchNum: 3 as PatchSetNum,
        path: 'test.txt',
        rootId: '09a9fb0a_1484e6cf' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            path: '/COMMIT_MSG',
            author: {
              _account_id: 1000002 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 2 as PatchSetNum,
            id: '8caddf38_44770ec1' as UrlEncodedCommentId,
            updated: '2015-12-03 15:16:15.000000000' as Timestamp,
            message: 'Another unresolved comment',
            unresolved: false,
          },
        ],
        patchNum: 2 as PatchSetNum,
        path: '/COMMIT_MSG',
        rootId: '8caddf38_44770ec1' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            path: '/COMMIT_MSG',
            author: {
              _account_id: 1000003 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 2 as PatchSetNum,
            id: 'scaddf38_44770ec1' as UrlEncodedCommentId,
            line: 4,
            updated: '2015-12-04 15:16:15.000000000' as Timestamp,
            message: 'Yet another unresolved comment',
            unresolved: true,
          },
        ],
        patchNum: 2 as PatchSetNum,
        path: '/COMMIT_MSG',
        line: 4,
        rootId: 'scaddf38_44770ec1' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            id: 'zcf0b9fa_fe1a5f62' as UrlEncodedCommentId,
            path: '/COMMIT_MSG',
            line: 6,
            updated: '2015-12-05 15:16:15.000000000' as Timestamp,
            message: 'resolved draft',
            unresolved: false,
            __draft: true,
            patch_set: '2' as PatchSetNum,
          },
        ],
        patchNum: 4 as PatchSetNum,
        path: '/COMMIT_MSG',
        line: 6,
        rootId: 'zcf0b9fa_fe1a5f62' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            id: 'patchset_level_1' as UrlEncodedCommentId,
            path: SpecialFilePath.PATCHSET_LEVEL_COMMENTS,
            updated: '2015-12-06 15:16:15.000000000' as Timestamp,
            message: 'patchset comment 1',
            unresolved: false,
            patch_set: '2' as PatchSetNum,
          },
        ],
        patchNum: 2 as PatchSetNum,
        path: SpecialFilePath.PATCHSET_LEVEL_COMMENTS,
        rootId: 'patchset_level_1' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            id: 'patchset_level_2' as UrlEncodedCommentId,
            path: SpecialFilePath.PATCHSET_LEVEL_COMMENTS,
            updated: '2015-12-07 15:16:15.000000000' as Timestamp,
            message: 'patchset comment 2',
            unresolved: false,
            patch_set: '3' as PatchSetNum,
          },
        ],
        patchNum: 3 as PatchSetNum,
        path: SpecialFilePath.PATCHSET_LEVEL_COMMENTS,
        rootId: 'patchset_level_2' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            path: '/COMMIT_MSG',
            author: {
              _account_id: 1000000 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 4 as PatchSetNum,
            id: 'rc1' as UrlEncodedCommentId,
            line: 5,
            updated: '2015-12-08 15:16:15.000000000' as Timestamp,
            message: 'test',
            unresolved: true,
            robot_id: 'rc1' as RobotId,
          },
        ],
        patchNum: 4 as PatchSetNum,
        path: '/COMMIT_MSG',
        line: 5,
        rootId: 'rc1' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
      {
        comments: [
          {
            path: '/COMMIT_MSG',
            author: {
              _account_id: 1000000 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 4 as PatchSetNum,
            id: 'rc2' as UrlEncodedCommentId,
            line: 7,
            updated: '2015-12-09 15:16:15.000000000' as Timestamp,
            message: 'test',
            unresolved: true,
            robot_id: 'rc2' as RobotId,
          },
          {
            path: '/COMMIT_MSG',
            author: {
              _account_id: 1000000 as AccountId,
              name: 'user',
              username: 'user',
            },
            patch_set: 4 as PatchSetNum,
            id: 'c2_1' as UrlEncodedCommentId,
            line: 5,
            updated: '2015-12-10 15:16:15.000000000' as Timestamp,
            message: 'test',
            unresolved: true,
          },
        ],
        patchNum: 4 as PatchSetNum,
        path: '/COMMIT_MSG',
        line: 7,
        rootId: 'rc2' as UrlEncodedCommentId,
        commentSide: CommentSide.REVISION,
      },
    ];
    await element.updateComplete;
  });

  suite('sort threads', () => {
    test('sort all threads', () => {
      element.sortDropdownValue = __testOnly_SortDropdownState.FILES;
      assert.equal(element.getDisplayedThreads().length, 9);
      const expected: UrlEncodedCommentId[] = [
        'patchset_level_2' as UrlEncodedCommentId, // Posted on Patchset 3
        'patchset_level_1' as UrlEncodedCommentId, // Posted on Patchset 2
        '8caddf38_44770ec1' as UrlEncodedCommentId, // File level on COMMIT_MSG
        'scaddf38_44770ec1' as UrlEncodedCommentId, // Line 4 on COMMIT_MSG
        'rc1' as UrlEncodedCommentId, // Line 5 on COMMIT_MESSAGE newer
        'ecf0b9fa_fe1a5f62' as UrlEncodedCommentId, // Line 5 on COMMIT_MESSAGE older
        'zcf0b9fa_fe1a5f62' as UrlEncodedCommentId, // Line 6 on COMMIT_MSG
        'rc2' as UrlEncodedCommentId, // Line 7 on COMMIT_MSG
        '09a9fb0a_1484e6cf' as UrlEncodedCommentId, // File level on test.txt
      ];
      const actual = element.getDisplayedThreads().map(t => t.rootId);
      assert.sameOrderedMembers(actual, expected);
    });

    test('sort all threads by timestamp', () => {
      element.sortDropdownValue = __testOnly_SortDropdownState.TIMESTAMP;
      assert.equal(element.getDisplayedThreads().length, 9);
      const expected: UrlEncodedCommentId[] = [
        'rc2' as UrlEncodedCommentId,
        'rc1' as UrlEncodedCommentId,
        'patchset_level_2' as UrlEncodedCommentId,
        'patchset_level_1' as UrlEncodedCommentId,
        'zcf0b9fa_fe1a5f62' as UrlEncodedCommentId,
        'scaddf38_44770ec1' as UrlEncodedCommentId,
        '8caddf38_44770ec1' as UrlEncodedCommentId,
        '09a9fb0a_1484e6cf' as UrlEncodedCommentId,
        'ecf0b9fa_fe1a5f62' as UrlEncodedCommentId,
      ];
      const actual = element.getDisplayedThreads().map(t => t.rootId);
      assert.sameOrderedMembers(actual, expected);
    });
  });

  test('renders', async () => {
    await element.updateComplete;
    expect(element).shadowDom.to.equal(`
      <div class="header">
        <span class="sort-text">Sort By:</span>
        <gr-dropdown-list id="sortDropdown"></gr-dropdown-list>
        <span class="separator"></span>
        <span class="filter-text">Filter By:</span>
        <gr-dropdown-list id="filterDropdown"></gr-dropdown-list>
        <span class="author-text">From:</span>
        <gr-account-label deselected="" selectionchipstyle=""></gr-account-label>
        <gr-account-label deselected="" selectionchipstyle=""></gr-account-label>
        <gr-account-label deselected="" selectionchipstyle=""></gr-account-label>
        <gr-account-label deselected="" selectionchipstyle=""></gr-account-label>
        <gr-account-label deselected="" selectionchipstyle=""></gr-account-label>
      </div>
      <div id="threads" part="threads">
        <gr-comment-thread show-file-name="" show-file-path=""></gr-comment-thread>
        <gr-comment-thread show-file-path=""></gr-comment-thread>
        <div class="thread-separator"></div>
        <gr-comment-thread show-file-name="" show-file-path=""></gr-comment-thread>
        <gr-comment-thread show-file-path=""></gr-comment-thread>
        <div class="thread-separator"></div>
        <gr-comment-thread has-draft="" show-file-name="" show-file-path=""></gr-comment-thread>
        <gr-comment-thread show-file-path=""></gr-comment-thread>
        <gr-comment-thread show-file-path=""></gr-comment-thread>
        <div class="thread-separator"></div>
        <gr-comment-thread show-file-name="" show-file-path=""></gr-comment-thread>
        <div class="thread-separator"></div>
        <gr-comment-thread has-draft="" show-file-name="" show-file-path=""></gr-comment-thread>
      </div>
    `);
  });

  test('renders empty', async () => {
    element.threads = [];
    await element.updateComplete;
    expect(queryAndAssert(element, 'div#threads')).dom.to.equal(`
      <div id="threads" part="threads">
        <div><span>No comments</span></div>
      </div>
    `);
  });

  test('tapping single author chips', async () => {
    element.account = createAccountDetailWithId(1);
    await element.updateComplete;
    const chips = Array.from(
      queryAll<GrAccountLabel>(element, 'gr-account-label')
    );
    const authors = chips.map(chip => accountOrGroupKey(chip.account!)).sort();
    assert.deepEqual(authors, [
      1 as AccountId,
      1000000 as AccountId,
      1000001 as AccountId,
      1000002 as AccountId,
      1000003 as AccountId,
    ]);
    assert.equal(element.threads.length, 9);
    assert.equal(element.getDisplayedThreads().length, 9);

    const chip = chips.find(chip => chip.account!._account_id === 1000001);
    tap(chip!);
    await element.updateComplete;

    assert.equal(element.threads.length, 9);
    assert.equal(element.getDisplayedThreads().length, 1);
    assert.equal(
      element.getDisplayedThreads()[0].comments[0].author?._account_id,
      1000001 as AccountId
    );

    tap(chip!);
    await element.updateComplete;
    assert.equal(element.threads.length, 9);
    assert.equal(element.getDisplayedThreads().length, 9);
  });

  test('tapping multiple author chips', async () => {
    element.account = createAccountDetailWithId(1);
    await element.updateComplete;
    const chips = Array.from(
      queryAll<GrAccountLabel>(element, 'gr-account-label')
    );

    tap(chips.find(chip => chip.account?._account_id === 1000001)!);
    tap(chips.find(chip => chip.account?._account_id === 1000002)!);
    await element.updateComplete;

    assert.equal(element.threads.length, 9);
    assert.equal(element.getDisplayedThreads().length, 3);
    assert.equal(
      element.getDisplayedThreads()[0].comments[0].author?._account_id,
      1000002 as AccountId
    );
    assert.equal(
      element.getDisplayedThreads()[1].comments[0].author?._account_id,
      1000002 as AccountId
    );
    assert.equal(
      element.getDisplayedThreads()[2].comments[0].author?._account_id,
      1000001 as AccountId
    );
  });

  test('show all comments', async () => {
    const event = new CustomEvent('value-changed', {
      detail: {value: CommentTabState.SHOW_ALL},
    });
    element.handleCommentsDropdownValueChange(event);
    await element.updateComplete;
    assert.equal(element.getDisplayedThreads().length, 9);
  });

  test('unresolved shows all unresolved comments', async () => {
    const event = new CustomEvent('value-changed', {
      detail: {value: CommentTabState.UNRESOLVED},
    });
    element.handleCommentsDropdownValueChange(event);
    await element.updateComplete;
    assert.equal(element.getDisplayedThreads().length, 4);
  });

  test('toggle drafts only shows threads with draft comments', async () => {
    const event = new CustomEvent('value-changed', {
      detail: {value: CommentTabState.DRAFTS},
    });
    element.handleCommentsDropdownValueChange(event);
    await element.updateComplete;
    assert.equal(element.getDisplayedThreads().length, 2);
  });

  suite('hideDropdown', () => {
    test('header hidden for hideDropdown=true', async () => {
      element.hideDropdown = true;
      await element.updateComplete;
      assert.isUndefined(query(element, '.header'));
    });

    test('header shown for hideDropdown=false', async () => {
      element.hideDropdown = false;
      await element.updateComplete;
      assert.isDefined(query(element, '.header'));
    });
  });

  suite('empty thread', () => {
    setup(async () => {
      element.threads = [];
      await element.updateComplete;
    });

    test('default empty message should show', () => {
      const threadsEl = queryAndAssert(element, '#threads');
      assert.isTrue(threadsEl.textContent?.trim().includes('No comments'));
    });
  });
});

suite('compareThreads', () => {
  let t1: CommentThread;
  let t2: CommentThread;

  const sortPredicate = (thread1: CommentThread, thread2: CommentThread) =>
    compareThreads(thread1, thread2);

  const checkOrder = (expected: CommentThread[]) => {
    assert.sameOrderedMembers([t1, t2].sort(sortPredicate), expected);
    assert.sameOrderedMembers([t2, t1].sort(sortPredicate), expected);
  };

  setup(() => {
    t1 = createThread({});
    t2 = createThread({});
  });

  test('patchset-level before file comments', () => {
    t1.path = SpecialFilePath.PATCHSET_LEVEL_COMMENTS;
    t2.path = SpecialFilePath.COMMIT_MESSAGE;
    checkOrder([t1, t2]);
  });

  test('paths lexicographically', () => {
    t1.path = 'a.txt';
    t2.path = 'b.txt';
    checkOrder([t1, t2]);
  });

  test('patchsets in reverse order', () => {
    t1.patchNum = 2 as PatchSetNum;
    t2.patchNum = 3 as PatchSetNum;
    checkOrder([t2, t1]);
  });

  test('file level comment before line', () => {
    t1.line = 123;
    t2.line = 'FILE';
    checkOrder([t2, t1]);
  });

  test('comments sorted by line', () => {
    t1.line = 123;
    t2.line = 321;
    checkOrder([t1, t2]);
  });
});