import { ApproxStructure, Assertions, GeneralSteps, Logger, Pipeline, Step } from '@ephox/agar';
import { TinyApis, TinyLoader } from '@ephox/mcagar';
import BlockRangeDelete from 'tinymce/core/delete/BlockRangeDelete';
import Theme from 'tinymce/themes/modern/Theme';
import { UnitTest } from '@ephox/bedrock';

UnitTest.asynctest('browser.tinymce.core.delete.BlockRangeDeleteTest', function () {
  const success = arguments[arguments.length - 2];
  const failure = arguments[arguments.length - 1];

  Theme();

  const sDelete = function (editor) {
    return Step.sync(function () {
      const returnVal = BlockRangeDelete.backspaceDelete(editor, true);
      Assertions.assertEq('Should return true since the operation should have done something', true, returnVal);
    });
  };

  const sDeleteNoop = function (editor) {
    return Step.sync(function () {
      const returnVal = BlockRangeDelete.backspaceDelete(editor, true);
      Assertions.assertEq('Should return false since the operation is a noop', false, returnVal);
    });
  };

  const sBackspace = function (editor, forward?) {
    return Step.sync(function () {
      const returnVal = BlockRangeDelete.backspaceDelete(editor, false);
      Assertions.assertEq('Should return true since the operation should have done something', true, returnVal);
    });
  };

  const sBackspaceNoop = function (editor, forward?) {
    return Step.sync(function () {
      const returnVal = BlockRangeDelete.backspaceDelete(editor, false);
      Assertions.assertEq('Should return false since the operation is a noop', false, returnVal);
    });
  };

  TinyLoader.setup(function (editor, onSuccess, onFailure) {
    const tinyApis = TinyApis(editor);

    Pipeline.async({}, [
      tinyApis.sFocus,
      Logger.t('Backspace on collapsed range should be a noop', GeneralSteps.sequence([
        tinyApis.sSetContent('<p>a</p>'),
        tinyApis.sSetCursor([0, 0], 1),
        sBackspaceNoop(editor),
        tinyApis.sAssertContent('<p>a</p>'),
        tinyApis.sAssertSelection([0, 0], 1, [0, 0], 1)
      ])),
      Logger.t('Delete on collapsed range should be a noop', GeneralSteps.sequence([
        tinyApis.sSetContent('<p>a</p>'),
        tinyApis.sSetCursor([0, 0], 1),
        sDeleteNoop(editor),
        tinyApis.sAssertContent('<p>a</p>'),
        tinyApis.sAssertSelection([0, 0], 1, [0, 0], 1)
      ])),
      Logger.t('Backspace on range between simple blocks should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<p>a</p><p>b</p>'),
        tinyApis.sSetSelection([0, 0], 1, [1, 0], 0),
        sBackspace(editor),
        tinyApis.sAssertContent('<p>ab</p>'),
        tinyApis.sAssertSelection([0, 0], 1, [0, 0], 1)
      ])),
      Logger.t('Delete on range between simple blocks should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<p>a</p><p>b</p>'),
        tinyApis.sSetSelection([0, 0], 1, [1, 0], 0),
        sDelete(editor),
        tinyApis.sAssertContent('<p>ab</p>'),
        tinyApis.sAssertSelection([0, 0], 1, [0, 0], 1)
      ])),
      Logger.t('Backspace from red span to h1 should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<h1>ab</h1><p><span style="color: red;">cd</span></p>'),
        tinyApis.sSetSelection([0, 0], 1, [1, 0, 0], 1),
        sBackspace(editor),
        tinyApis.sAssertContent('<h1>a<span style="color: red;">d</span></h1>'),
        tinyApis.sAssertSelection([0, 0], 1, [0, 0], 1)
      ])),
      Logger.t('Delete from red span to h1 should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<p><span style="color: red;">ab</span></p><h1>cd</h1>'),
        tinyApis.sSetSelection([0, 0, 0], 1, [1, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent('<p><span style="color: red;">a</span>d</p>'),
        tinyApis.sAssertSelection([0, 0, 0], 1, [0, 0, 0], 1)
      ])),
      Logger.t('Delete from li to li should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<ul><li>ab</li><li>cd</li></ul>'),
        tinyApis.sSetSelection([0, 0, 0], 1, [0, 1, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent('<ul><li>ad</li></ul>'),
        tinyApis.sAssertSelection([0, 0, 0], 1, [0, 0, 0], 1)
      ])),
      Logger.t('Delete from nested li to li should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<ul><li>ab<ul><li>cd</li></ul></li></ul>'),
        tinyApis.sSetSelection([0, 0, 0], 1, [0, 0, 1, 0, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent('<ul><li>ad</li></ul>'),
        tinyApis.sAssertSelection([0, 0, 0], 1, [0, 0, 0], 1)
      ])),
      Logger.t('Delete from li to nested li should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<ul><li>ab<ul><li>cd</li></ul></li><li>ef</li></ul>'),
        tinyApis.sSetSelection([0, 0, 1, 0, 0], 1, [0, 1, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent('<ul><li>ab<ul><li>cf</li></ul></li></ul>'),
        tinyApis.sAssertSelection([0, 0, 1, 0, 0], 1, [0, 0, 1, 0, 0], 1)
      ])),
      Logger.t('Delete from deep nested li to li should merge', GeneralSteps.sequence([
        tinyApis.sSetContent('<ul><li>ab<ul><li>cd<ul><li>ef</li></li></ul></li></ul>'),
        tinyApis.sSetSelection([0, 0, 0], 1, [0, 0, 1, 0, 1, 0, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent('<ul><li>af</li></ul>'),
        tinyApis.sAssertSelection([0, 0, 0], 1, [0, 0, 0], 1)
      ])),
      Logger.t('Delete on selection of everything should empty editor', GeneralSteps.sequence([
        tinyApis.sSetContent('<p>a</p><p>b</p>'),
        tinyApis.sSetSelection([0, 0], 0, [1, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent(''),
        tinyApis.sAssertSelection([0], 0, [0], 0),
        tinyApis.sAssertContentStructure(ApproxStructure.build(function (s, str) {
          return s.element('body', {
            children: [
              s.element('p', { children: [ s.element('br', { attrs: { 'data-mce-bogus': str.is('1') } }) ] })
            ]
          });
        }))
      ])),
      Logger.t('Backspace selected paragraphs in td should produce an padded empty cell and also not delete the whole table', GeneralSteps.sequence([
        tinyApis.sSetContent('<table><tbody><tr><td><p>a</p><p>b</p></td></tr></tbody></table>'),
        tinyApis.sSetSelection([0, 0, 0, 0, 0, 0], 0, [0, 0, 0, 0, 1, 0], 1),
        sBackspace(editor),
        tinyApis.sAssertContent('<table><tbody><tr><td><p>&nbsp;</p></td></tr></tbody></table>'),
        tinyApis.sAssertSelection([0, 0, 0, 0, 0], 0, [0, 0, 0, 0, 0], 0)
      ])),
      Logger.t('Delete selected paragraphs in td should produce an padded empty cell and also not delete the whole table', GeneralSteps.sequence([
        tinyApis.sSetContent('<table><tbody><tr><td><p>a</p><p>b</p></td></tr></tbody></table>'),
        tinyApis.sSetSelection([0, 0, 0, 0, 0, 0], 0, [0, 0, 0, 0, 1, 0], 1),
        sDelete(editor),
        tinyApis.sAssertContent('<table><tbody><tr><td><p>&nbsp;</p></td></tr></tbody></table>'),
        tinyApis.sAssertSelection([0, 0, 0, 0, 0], 0, [0, 0, 0, 0, 0], 0)
      ]))
    ], onSuccess, onFailure);
  }, {
    skin_url: '/project/js/tinymce/skins/lightgray',
    indent: false
  }, success, failure);
});