// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
import {flushPromises, mount} from '@vue/test-utils';
import PullRequestMergeForm from './PullRequestMergeForm.vue';

async function renderMergeForm(branchName) {
  window.config.pageData.pullRequestMergeForm = {
    textDeleteBranch: `Delete branch "${branchName}"`,
    textDoMerge: 'Merge',
    defaultMergeStyle: 'merge',
    isPullBranchDeletable: true,
    canMergeNow: true,
    mergeStyles: [{
      'name': 'merge',
      'allowed': true,
      'textDoMerge': 'Merge',
      'mergeTitleFieldText': 'Merge PR',
      'mergeMessageFieldText': 'Description',
      'hideAutoMerge': 'Hide this message',
    }],
  };
  const mergeform = mount(PullRequestMergeForm);
  mergeform.get('.merge-button').trigger('click');
  await flushPromises();
  return mergeform;
}

test('renders escaped branch name', async () => {
  let mergeform = await renderMergeForm('<b>evil</b>');
  expect(mergeform.get('label[for="delete-branch-after-merge"]').text()).toBe('Delete branch "<b>evil</b>"');

  mergeform = await renderMergeForm('<script class="evil">alert("evil message");</script>');
  expect(mergeform.get('label[for="delete-branch-after-merge"]').text()).toBe('Delete branch "<script class="evil">alert("evil message");</script>"');
});

test('hides merge controls when no merge style is allowed', () => {
  window.config.pageData.pullRequestMergeForm = {
    textDeleteBranch: 'Delete branch',
    textAutoMergeButtonWhenSucceed: 'when checks succeed',
    textAutoMergeWhenSucceed: 'Auto merge when checks succeed',
    textAutoMergeCancelSchedule: 'Cancel schedule',
    textCancel: 'Cancel',
    defaultDeleteBranchAfterMerge: false,
    defaultMergeMessage: '',
    defaultMergeStyle: 'merge',
    emptyCommit: false,
    hasPendingPullRequestMerge: false,
    hasPendingPullRequestMergeTip: '',
    isPullBranchDeletable: false,
    canMergeNow: true,
    allOverridableChecksOk: true,
    pullHeadCommitID: 'abc123',
    mergeStyles: [{
      name: 'merge',
      allowed: false,
      textDoMerge: 'Merge',
      mergeTitleFieldText: '',
      mergeMessageFieldText: '',
      hideAutoMerge: false,
    }],
  };

  const mergeform = mount(PullRequestMergeForm);
  expect(mergeform.find('.merge-button').exists()).toBe(false);
  expect(mergeform.find('form.form-fetch-action').exists()).toBe(false);
});

test('shows merge styles dropdown when multiple merge styles are allowed', async () => {
  window.config.pageData.pullRequestMergeForm = {
    textAutoMergeButtonWhenSucceed: '(When checks succeed)',
    textAutoMergeWhenSucceed: 'Auto merge when all checks succeed',
    textAutoMergeCancelSchedule: 'Cancel auto merge',
    canMergeNow: true,
    defaultMergeStyle: 'merge',
    hasPendingPullRequestMerge: false,
    mergeStyles: [
      {
        name: 'merge',
        allowed: true,
        textDoMerge: 'Create merge commit',
        mergeTitleFieldText: '',
        mergeMessageFieldText: '',
        hideAutoMerge: false,
      },
      {
        name: 'rebase',
        allowed: true,
        textDoMerge: 'Rebase then fast-forward',
        mergeTitleFieldText: '',
        mergeMessageFieldText: '',
        hideAutoMerge: false,
      },
    ],
  };

  const mergeform = mount(PullRequestMergeForm);
  await flushPromises();
  const mergeBtn = '.merge-button .ui.button .button-text';
  expect(mergeform.find(mergeBtn).exists()).toBe(true);
  expect(mergeform.find(mergeBtn).text()).toBe('Create merge commit');
  expect(mergeform.find('.merge-button .single-merge-strategy-auto-merge-btn').exists()).toBe(false);
  expect(mergeform.find('.merge-button .ui.dropdown .menu').exists()).toBe(true);
  expect(mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(1)').exists()).toBe(true);
  expect(mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(1) .action-text').text()).toBe('Create merge commit');
  expect(mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(1) .auto-merge-small').text()).toBe('Auto merge when all checks succeed');
  expect(mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(2)').exists()).toBe(true);
  expect(mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(2) .action-text').text()).toBe('Rebase then fast-forward');
  expect(mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(2) .auto-merge-small').text()).toBe('Auto merge when all checks succeed');

  await mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(2)').trigger('click');
  expect(mergeform.find(mergeBtn).text()).toBe('Rebase then fast-forward');

  await mergeform.find('.merge-button .ui.dropdown .menu .item:nth-of-type(1) .auto-merge-small').trigger('click');
  expect(mergeform.find(mergeBtn).text()).toBe('Create merge commit (When checks succeed)');
});

test('shows auto merge button when a single merge style is allowed', async () => {
  window.config.pageData.pullRequestMergeForm = {
    textAutoMergeButtonWhenSucceed: '(When checks succeed)',
    textAutoMergeWhenSucceed: 'Auto merge when all checks succeed',
    textAutoMergeCancelSchedule: 'Cancel auto merge',
    canMergeNow: true,
    defaultMergeStyle: 'merge',
    hasPendingPullRequestMerge: false,
    mergeStyles: [
      {
        name: 'merge',
        allowed: true,
        textDoMerge: 'Create merge commit',
        mergeTitleFieldText: '',
        mergeMessageFieldText: '',
        hideAutoMerge: false,
      },
    ],
  };

  const mergeform = mount(PullRequestMergeForm);
  await flushPromises();
  const mergeBtn = '.merge-button .ui.button .button-text';
  expect(mergeform.find(mergeBtn).exists()).toBe(true);
  expect(mergeform.find(mergeBtn).text()).toBe('Create merge commit');
  expect(mergeform.find('.merge-button .ui.dropdown .menu').exists()).toBe(false);
  const autoMergeBtn = '.merge-button .single-merge-strategy-auto-merge-btn';
  expect(mergeform.find(autoMergeBtn).exists()).toBe(true);
  const tooltip = '.merge-button .single-merge-strategy-auto-merge-btn .single-merge-strategy-auto-merge-tooltip';
  expect(mergeform.find(tooltip).exists()).toBe(true);
  expect(mergeform.find(tooltip).text()).toBe('Auto merge when all checks succeed');

  await mergeform.find(autoMergeBtn).trigger('click');
  expect(mergeform.find(mergeBtn).text()).toBe('Create merge commit (When checks succeed)');
  expect(mergeform.find(tooltip).text()).toBe('Cancel auto merge');

  await mergeform.find(autoMergeBtn).trigger('click');
  expect(mergeform.find(mergeBtn).text()).toBe('Create merge commit');
  expect(mergeform.find(tooltip).text()).toBe('Auto merge when all checks succeed');
});