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import $ from 'jquery';
import 'jquery.are-you-sure';
import {mqBinarySearch} from '../utils.js';
import {createDropzone} from './dropzone.js';
import {initCompColorPicker} from './comp/ColorPicker.js';
import {showGlobalErrorMessage} from '../bootstrap.js';
import {handleGlobalEnterQuickSubmit} from './comp/QuickSubmit.js';
import {svg} from '../svg.js';
import {hideElem, showElem, toggleElem} from '../utils/dom.js';

const {appUrl, csrfToken} = window.config;

export function initGlobalFormDirtyLeaveConfirm() {
  // Warn users that try to leave a page after entering data into a form.
  // Except on sign-in pages, and for forms marked as 'ignore-dirty'.
  if ($('.user.signin').length === 0) {
    $('form:not(.ignore-dirty)').areYouSure();
  }
}

export function initHeadNavbarContentToggle() {
  const content = $('#navbar');
  const toggle = $('#navbar-expand-toggle');
  let isExpanded = false;
  toggle.on('click', () => {
    isExpanded = !isExpanded;
    if (isExpanded) {
      content.addClass('shown');
      toggle.addClass('active');
    } else {
      content.removeClass('shown');
      toggle.removeClass('active');
    }
  });
}

export function initFootLanguageMenu() {
  function linkLanguageAction() {
    const $this = $(this);
    $.get($this.data('url')).always(() => {
      window.location.reload();
    });
  }

  $('.language-menu a[lang]').on('click', linkLanguageAction);
}


export function initGlobalEnterQuickSubmit() {
  $(document).on('keydown', '.js-quick-submit', (e) => {
    if (((e.ctrlKey && !e.altKey) || e.metaKey) && (e.key === 'Enter')) {
      handleGlobalEnterQuickSubmit(e.target);
      return false;
    }
  });
}

export function initGlobalButtonClickOnEnter() {
  $(document).on('keypress', '.ui.button', (e) => {
    if (e.keyCode === 13 || e.keyCode === 32) { // enter key or space bar
      if (e.target.nodeName === 'BUTTON') return; // button already handles space&enter correctly
      $(e.target).trigger('click');
      e.preventDefault();
    }
  });
}

export function initGlobalCommon() {
  // Undo Safari emoji glitch fix at high enough zoom levels
  if (navigator.userAgent.match('Safari')) {
    $(window).on('resize', () => {
      const px = mqBinarySearch('width', 0, 4096, 1, 'px');
      const em = mqBinarySearch('width', 0, 1024, 0.01, 'em');
      if (em * 16 * 1.25 - px <= -1) {
        $('body').addClass('safari-above125');
      } else {
        $('body').removeClass('safari-above125');
      }
    });
  }

  // Semantic UI modules.
  const $uiDropdowns = $('.ui.dropdown');

  // do not init "custom" dropdowns, "custom" dropdowns are managed by their own code.
  $uiDropdowns.filter(':not(.custom)').dropdown();

  // The "jump" means this dropdown is mainly used for "menu" purpose,
  // clicking an item will jump to somewhere else or trigger an action/function.
  // When a dropdown is used for non-refresh actions with tippy,
  // it must have this "jump" class to hide the tippy when dropdown is closed.
  $uiDropdowns.filter('.jump').dropdown({
    action: 'hide',
    onShow() {
      // hide associated tooltip while dropdown is open
      this._tippy?.hide();
      this._tippy?.disable();
    },
    onHide() {
      this._tippy?.enable();

      // hide all tippy elements of items after a while. eg: use Enter to click "Copy Link" in the Issue Context Menu
      setTimeout(() => {
        const $dropdown = $(this);
        if ($dropdown.dropdown('is hidden')) {
          $(this).find('.menu > .item').each((_, item) => {
            item._tippy?.hide();
          });
        }
      }, 2000);
    },
  });

  // Special popup-directions, prevent Fomantic from guessing the popup direction.
  // With default "direction: auto", if the viewport height is small, Fomantic would show the popup upward,
  //   if the dropdown is at the beginning of the page, then the top part would be clipped by the window view.
  //   eg: Issue List "Sort" dropdown
  // But we can not set "direction: downward" for all dropdowns, because there is a bug in dropdown menu positioning when calculating the "left" position,
  //   which would make some dropdown popups slightly shift out of the right viewport edge in some cases.
  //   eg: the "Create New Repo" menu on the navbar.
  $uiDropdowns.filter('.upward').dropdown('setting', 'direction', 'upward');
  $uiDropdowns.filter('.downward').dropdown('setting', 'direction', 'downward');

  $('.ui.checkbox').checkbox();

  $('.tabular.menu .item').tab();

  // prevent multiple form submissions on forms containing .loading-button
  document.addEventListener('submit', (e) => {
    const btn = e.target.querySelector('.loading-button');
    if (!btn) return;
    if (btn.classList.contains('loading')) return e.preventDefault();
    btn.classList.add('loading');
  });
}

export function initGlobalDropzone() {
  // Dropzone
  for (const el of document.querySelectorAll('.dropzone')) {
    const $dropzone = $(el);
    const _promise = createDropzone(el, {
      url: $dropzone.data('upload-url'),
      headers: {'X-Csrf-Token': csrfToken},
      maxFiles: $dropzone.data('max-file'),
      maxFilesize: $dropzone.data('max-size'),
      acceptedFiles: (['*/*', ''].includes($dropzone.data('accepts'))) ? null : $dropzone.data('accepts'),
      addRemoveLinks: true,
      dictDefaultMessage: $dropzone.data('default-message'),
      dictInvalidFileType: $dropzone.data('invalid-input-type'),
      dictFileTooBig: $dropzone.data('file-too-big'),
      dictRemoveFile: $dropzone.data('remove-file'),
      timeout: 0,
      thumbnailMethod: 'contain',
      thumbnailWidth: 480,
      thumbnailHeight: 480,
      init() {
        this.on('success', (file, data) => {
          file.uuid = data.uuid;
          const input = $(`<input id="${data.uuid}" name="files" type="hidden">`).val(data.uuid);
          $dropzone.find('.files').append(input);
          // Create a "Copy Link" element, to conveniently copy the image
          // or file link as Markdown to the clipboard
          const copyLinkElement = document.createElement('div');
          copyLinkElement.className = 'gt-tc';
          // The a element has a hardcoded cursor: pointer because the default is overridden by .dropzone
          copyLinkElement.innerHTML = `<a href="#" style="cursor: pointer;">${svg('octicon-copy', 14, 'copy link')} Copy link</a>`;
          copyLinkElement.addEventListener('click', (e) => {
            e.preventDefault();
            let fileMarkdown = `[${file.name}](/attachments/${file.uuid})`;
            if (file.type.startsWith('image/')) {
              fileMarkdown = `!${fileMarkdown}`;
            }
            navigator.clipboard.writeText(fileMarkdown);
          });
          file.previewTemplate.append(copyLinkElement);
        });
        this.on('removedfile', (file) => {
          $(`#${file.uuid}`).remove();
          if ($dropzone.data('remove-url')) {
            $.post($dropzone.data('remove-url'), {
              file: file.uuid,
              _csrf: csrfToken,
            });
          }
        });
      },
    });
  }
}

export function initGlobalLinkActions() {
  function showDeletePopup(e) {
    e.preventDefault();
    const $this = $(this);
    const dataArray = $this.data();
    let filter = '';
    if ($this.attr('data-modal-id')) {
      filter += `#${$this.attr('data-modal-id')}`;
    }

    const dialog = $(`.delete.modal${filter}`);
    dialog.find('.name').text($this.data('name'));
    for (const [key, value] of Object.entries(dataArray)) {
      if (key && key.startsWith('data')) {
        dialog.find(`.${key}`).text(value);
      }
    }

    dialog.modal({
      closable: false,
      onApprove() {
        if ($this.data('type') === 'form') {
          $($this.data('form')).trigger('submit');
          return;
        }

        const postData = {
          _csrf: csrfToken,
        };
        for (const [key, value] of Object.entries(dataArray)) {
          if (key && key.startsWith('data')) {
            postData[key.slice(4)] = value;
          }
          if (key === 'id') {
            postData['id'] = value;
          }
        }

        $.post($this.data('url'), postData).done((data) => {
          window.location.href = data.redirect;
        });
      }
    }).modal('show');
  }

  function showAddAllPopup(e) {
    e.preventDefault();
    const $this = $(this);
    let filter = '';
    if ($this.attr('data-modal-id')) {
      filter += `#${$this.attr('data-modal-id')}`;
    }

    const dialog = $(`.addall.modal${filter}`);
    dialog.find('.name').text($this.data('name'));

    dialog.modal({
      closable: false,
      onApprove() {
        if ($this.data('type') === 'form') {
          $($this.data('form')).trigger('submit');
          return;
        }

        $.post($this.data('url'), {
          _csrf: csrfToken,
          id: $this.data('id')
        }).done((data) => {
          window.location.href = data.redirect;
        });
      }
    }).modal('show');
  }

  function linkAction(e) {
    e.preventDefault();
    const $this = $(this);
    const redirect = $this.data('redirect');
    $this.prop('disabled', true);
    $.post($this.data('url'), {
      _csrf: csrfToken
    }).done((data) => {
      if (data.redirect) {
        window.location.href = data.redirect;
      } else if (redirect) {
        window.location.href = redirect;
      } else {
        window.location.reload();
      }
    }).always(() => {
      $this.prop('disabled', false);
    });
  }

  // Helpers.
  $('.delete-button').on('click', showDeletePopup);
  $('.link-action').on('click', linkAction);

  // FIXME: this function is only used once, and not common, not well designed. should be refactored later
  $('.add-all-button').on('click', showAddAllPopup);

  // FIXME: this is only used once, and should be replace with `link-action` instead
  $('.undo-button').on('click', function () {
    const $this = $(this);
    $this.prop('disabled', true);
    $.post($this.data('url'), {
      _csrf: csrfToken,
      id: $this.data('id')
    }).done((data) => {
      window.location.href = data.redirect;
    }).always(() => {
      $this.prop('disabled', false);
    });
  });
}

export function initGlobalButtons() {
  // There are many "cancel button" elements in modal dialogs, Fomantic UI expects they are button-like elements but never submit a form.
  // However, Gitea misuses the modal dialog and put the cancel buttons inside forms, so we must prevent the form submission.
  // There are a few cancel buttons in non-modal forms, and there are some dynamically created forms (eg: the "Edit Issue Content")
  $(document).on('click', 'form button.ui.cancel.button', (e) => {
    e.preventDefault();
  });

  $('.show-panel.button').on('click', function (e) {
    // a '.show-panel.button' can show a panel, by `data-panel="selector"`
    // if the button is a "toggle" button, it toggles the panel
    e.preventDefault();
    const sel = $(this).attr('data-panel');
    if (this.classList.contains('toggle')) {
      toggleElem(sel);
    } else {
      showElem(sel);
    }
  });

  $('.hide-panel.button').on('click', function (e) {
    // a `.hide-panel.button` can hide a panel, by `data-panel="selector"` or `data-panel-closest="selector"`
    e.preventDefault();
    let sel = $(this).attr('data-panel');
    if (sel) {
      hideElem($(sel));
      return;
    }
    sel = $(this).attr('data-panel-closest');
    if (sel) {
      hideElem($(this).closest(sel));
      return;
    }
    // should never happen, otherwise there is a bug in code
    alert('Nothing to hide');
  });

  $('.show-modal').on('click', function (e) {
    e.preventDefault();
    const modalDiv = $($(this).attr('data-modal'));
    for (const attrib of this.attributes) {
      if (!attrib.name.startsWith('data-modal-')) {
        continue;
      }
      const id = attrib.name.substring(11);
      const target = modalDiv.find(`#${id}`);
      if (target.is('input')) {
        target.val(attrib.value);
      } else {
        target.text(attrib.value);
      }
    }
    modalDiv.modal('show');
    const colorPickers = $($(this).attr('data-modal')).find('.color-picker');
    if (colorPickers.length > 0) {
      initCompColorPicker();
    }
  });

  $('.delete-post.button').on('click', function (e) {
    e.preventDefault();
    const $this = $(this);
    $.post($this.attr('data-request-url'), {
      _csrf: csrfToken
    }).done(() => {
      window.location.href = $this.attr('data-done-url');
    });
  });
}

/**
 * Too many users set their ROOT_URL to wrong value, and it causes a lot of problems:
 *   * Cross-origin API request without correct cookie
 *   * Incorrect href in <a>
 *   * ...
 * So we check whether current URL starts with AppUrl(ROOT_URL).
 * If they don't match, show a warning to users.
 */
export function checkAppUrl() {
  const curUrl = window.location.href;
  // some users visit "https://domain/gitea" while appUrl is "https://domain/gitea/", there should be no warning
  if (curUrl.startsWith(appUrl) || `${curUrl}/` === appUrl) {
    return;
  }
  showGlobalErrorMessage(`Your ROOT_URL in app.ini is "${appUrl}", it's unlikely matching the site you are visiting.
Mismatched ROOT_URL config causes wrong URL links for web UI/mail content/webhook notification.`);
}