/* Sidebar toolbar: per-area export / import / template import. */
(function ($) {
  'use strict';

  const config = window.jioWidgetAdmin || {};
  const t = (key) => (config.i18n && config.i18n[key]) || key;

  function post(action, data) {
    return $.ajax({
      url: config.ajaxUrl,
      type: 'POST',
      dataType: 'json',
      data: $.extend({ action, nonce: config.transferNonce }, data || {}),
    });
  }

  function failMessage(res, xhr, fallbackKey) {
    return res?.data?.message || xhr?.responseJSON?.data?.message || t(fallbackKey);
  }

  function clearResult($result) {
    return $result.removeClass('is-ok is-warn is-err').empty();
  }

  function showError($result, message) {
    clearResult($result).addClass('is-err').text(message);
  }

  function reloadButton() {
    return $('<p class="jio-wie-modal__reload-wrap"></p>').append(
      $('<button type="button" class="button button-primary jio-wie-modal__reload"></button>').text(t('reloadPage'))
    );
  }

  function renderImportResult($result, res, autoReload) {
    clearResult($result);
    if (!res?.success || !res.data) {
      showError($result, failMessage(res, null, 'importFailed'));
      return;
    }
    const warnings = Array.isArray(res.data.warnings) ? res.data.warnings : [];
    $result.addClass(warnings.length ? 'is-warn' : 'is-ok');
    [res.data.message || t('importSuccess')].concat(warnings).forEach((line, index) => {
      if (index) $result.append('<br>');
      $result.append(document.createTextNode(String(line)));
    });
    $result.append(reloadButton());
    if (autoReload) window.setTimeout(() => window.location.reload(), 200);
  }

  function withButtonLoading($button, loadingText, idleText, request) {
    $button.prop('disabled', true).text(loadingText);
    return request().always(() => $button.prop('disabled', false).text(idleText));
  }

  function importModeHtml(name) {
    return `<div class="jio-wie-modal__import-mode">
      <div class="jio-wie-modal__import-mode-title description"></div>
      <label class="jio-wie-modal__import-mode-row"><input type="radio" name="${name}" value="replace"> <span data-mode-label="replace"></span></label>
      <label class="jio-wie-modal__import-mode-row"><input type="radio" name="${name}" value="append" checked> <span data-mode-label="append"></span></label>
    </div>`;
  }

  function createModal(opts) {
    let $modal = null;

    function ensure() {
      if ($modal) return $modal;
      $modal = $(`<div id="${opts.id}" class="jio-wie-modal${opts.extraClass ? ' ' + opts.extraClass : ''}" aria-hidden="true">
        <div class="jio-wie-modal__backdrop" data-jio-wie-close></div>
        <div class="jio-wie-modal__dialog" role="dialog" aria-modal="true">
          <button type="button" class="jio-wie-modal__close" data-jio-wie-close aria-label="${t('close')}">&times;</button>
          ${opts.bodyHtml}
          ${opts.actionsHtml}
          <p class="jio-wie-modal__result" aria-live="polite"></p>
        </div>
      </div>`).appendTo('body');
      $modal.find('.jio-wie-modal__import-mode-title').text(t('importModeLabel'));
      $modal.find('[data-mode-label="replace"]').text(t('importModeReplace'));
      $modal.find('[data-mode-label="append"]').text(t('importModeAppend'));
      $modal.find('.jio-wie-modal__cancel').text(t('close'));
      $modal.on('click', '[data-jio-wie-close], .jio-wie-modal__cancel', close);
      if (opts.onInit) opts.onInit($modal);
      return $modal;
    }

    function open() {
      ensure().find('input[name$="-import-mode"][value="append"]').prop('checked', true);
      clearResult($modal.find('.jio-wie-modal__result'));
      $modal.addClass('is-open').attr('aria-hidden', 'false');
    }

    function close() {
      if ($modal) $modal.removeClass('is-open').attr('aria-hidden', 'true');
    }

    return { ensure, open, close, $result: () => ensure().find('.jio-wie-modal__result') };
  }

  const state = { mode: 'export', sidebarId: '', templateSidebarId: '' };

  const ioModal = createModal({
    id: 'jio-wie-modal',
    bodyHtml: `<h3 class="jio-wie-modal__title"></h3>
      <p class="jio-wie-modal__hint description"></p>
      <textarea class="jio-wie-modal__textarea" spellcheck="false"></textarea>
      ${importModeHtml('jio-wie-import-mode')}`,
    actionsHtml: `<p class="jio-wie-modal__actions">
      <button type="button" class="button jio-wie-modal__copy"></button>
      <button type="button" class="button button-primary jio-wie-modal__submit"></button>
      <button type="button" class="button jio-wie-modal__cancel"></button>
    </p>`,
    onInit($modal) {
      $modal.find('.jio-wie-modal__copy').on('click', function () {
        const textarea = $modal.find('.jio-wie-modal__textarea')[0];
        textarea.select();
        textarea.setSelectionRange(0, textarea.value.length);
        try {
          document.execCommand('copy');
          $(this).text(t('copyDone'));
        } catch (_error) {
          window.alert(t('copyFail'));
        }
      });
      $modal.find('.jio-wie-modal__submit').on('click', submitImport);
    },
  });

  const templateModal = createModal({
    id: 'jio-wie-template-modal',
    extraClass: 'jio-wie-template-layer',
    bodyHtml: `<h3 class="jio-wie-modal__title"></h3>
      <div class="jio-wie-modal__hint description"></div>
      <div class="jio-wie-template-list-wrap"><p class="jio-wie-template-list-status description"></p><div class="jio-wie-template-list"></div></div>
      ${importModeHtml('jio-wie-template-import-mode')}`,
    actionsHtml: `<p class="jio-wie-modal__actions">
      <button type="button" class="button button-primary jio-wie-template-submit"></button>
      <button type="button" class="button jio-wie-modal__cancel"></button>
    </p>`,
    onInit($modal) {
      $modal.find('.jio-wie-modal__title').text(t('templateModalTitle'));
      // templateHint is server-built, escaped translation markup.
      $modal.find('.jio-wie-modal__hint').html(t('templateHint'));
      $modal.find('.jio-wie-template-submit').text(t('templateSubmit')).on('click', submitTemplate);
    },
  });

  function openIoModal(mode, sidebarId) {
    state.mode = mode;
    state.sidebarId = sidebarId;
    const $modal = ioModal.ensure();
    const isExport = mode === 'export';
    $modal.find('.jio-wie-modal__title').text(t(isExport ? 'exportTitle' : 'importTitle'));
    $modal.find('.jio-wie-modal__hint').text(t(isExport ? 'exportHint' : 'importHint'));
    $modal.find('.jio-wie-modal__textarea').prop('readonly', isExport).val('');
    $modal.find('.jio-wie-modal__copy').toggle(isExport).text(t('copy'));
    $modal.find('.jio-wie-modal__submit').toggle(!isExport).text(t('submitImport')).prop('disabled', false);
    $modal.find('.jio-wie-modal__import-mode').toggle(!isExport);
    ioModal.open();
    if (isExport) fetchExport();
  }

  function fetchExport() {
    const $textarea = ioModal.ensure().find('.jio-wie-modal__textarea').val(t('loadingExport'));
    post('jio_widgets_export_sidebar', { sidebar_id: state.sidebarId })
      .done((res) => {
        if (res?.success && res.data?.json_text) {
          $textarea.val(res.data.json_text);
          return;
        }
        $textarea.val('');
        showError(ioModal.$result(), failMessage(res, null, 'exportFailed'));
      })
      .fail((xhr) => {
        $textarea.val('');
        showError(ioModal.$result(), failMessage(null, xhr, 'networkError'));
      });
  }

  function submitImport() {
    const $modal = ioModal.ensure();
    const mode = $modal.find('input[name="jio-wie-import-mode"]:checked').val() || 'append';
    if (!window.confirm(t(mode === 'append' ? 'confirmImportAppend' : 'confirmImportReplace'))) return;
    const raw = String($modal.find('.jio-wie-modal__textarea').val() || '').trim();
    if (!raw) {
      showError(ioModal.$result(), t('pasteJsonFirst'));
      return;
    }
    withButtonLoading($modal.find('.jio-wie-modal__submit'), t('loadingImport'), t('submitImport'), () =>
      post('jio_widgets_import_sidebar', { sidebar_id: state.sidebarId, json: raw, import_mode: mode })
        .done((res) => {
          if (res?.success) $modal.find('.jio-wie-modal__textarea').val('');
          renderImportResult(ioModal.$result(), res, false);
        })
        .fail((xhr) => showError(ioModal.$result(), failMessage(null, xhr, 'networkError')))
    );
  }

  function templateItem(template) {
    const $meta = $('<span class="jio-wie-template-item-meta"></span>')
      .append($('<span class="jio-wie-template-item-title"></span>').text(template.title || template.id));
    if (template.desc) $meta.append($('<span class="jio-wie-template-item-desc"></span>').text(template.desc));
    if (template.remind) {
      $meta.append($('<span class="jio-wie-template-item-remind"></span>')
        .append('<span class="dashicons dashicons-info-outline" aria-hidden="true"></span>')
        .append(document.createTextNode(template.remind)));
    }
    if (Array.isArray(template.modules) && template.modules.length) {
      $meta.append($('<span class="jio-wie-template-item-modules"></span>').text(template.modules.map((module) => module.title).join(' / ')));
    }
    const $label = $('<label class="jio-wie-template-item-label"></label>')
      .append($('<input type="radio" name="jio-wie-template-id">').val(template.id))
      .append($meta);
    return $('<div class="jio-wie-template-item"></div>').append($('<div class="jio-wie-template-item-row"></div>').append($label));
  }

  function openTemplateModal(sidebarId) {
    state.templateSidebarId = sidebarId;
    const $modal = templateModal.ensure();
    const $list = $modal.find('.jio-wie-template-list').empty();
    const $status = $modal.find('.jio-wie-template-list-status').text(t('templateLoadingList'));
    templateModal.open();
    post('jio_widgets_list_templates')
      .done((res) => {
        const templates = res?.success ? res.data?.templates : null;
        $status.text(Array.isArray(templates) && templates.length ? '' : t('templateEmpty'));
        (templates || []).forEach((template) => $list.append(templateItem(template)));
      })
      .fail((xhr) => $status.text(failMessage(null, xhr, 'networkError')));
  }

  function submitTemplate() {
    const $modal = templateModal.ensure();
    const $picked = $modal.find('input[name="jio-wie-template-id"]:checked');
    if (!$picked.length) {
      window.alert(t('templatePick'));
      return;
    }
    const templateId = String($picked.val());
    const mode = $modal.find('input[name="jio-wie-template-import-mode"]:checked').val() || 'append';
    const title = $picked.closest('.jio-wie-template-item').find('.jio-wie-template-item-title').text().trim() || templateId;
    const message = t('confirmTemplate').replace('{title}', title).replace('{mode}', t(mode === 'append' ? 'importModeAppend' : 'importModeReplace'));
    if (!window.confirm(message)) return;
    withButtonLoading($modal.find('.jio-wie-template-submit'), t('loadingImport'), t('templateSubmit'), () =>
      post('jio_widgets_import_template', { sidebar_id: state.templateSidebarId, template_id: templateId, import_mode: mode })
        .done((res) => renderImportResult(templateModal.$result(), res, true))
        .fail((xhr) => showError(templateModal.$result(), failMessage(null, xhr, 'networkError')))
    );
  }

  function injectToolbar($anchor, sidebarId) {
    if (!$anchor?.length || !sidebarId || $anchor.next('.jio-wie-toolbar').length) return;
    const $toolbar = $('<div class="jio-wie-toolbar"></div>');
    [['export', 'exportModules'], ['import', 'importModules'], ['template', 'importTemplate']].forEach(([action, label]) => {
      $('<button type="button" class="button button-small"></button>')
        .text(t(label))
        .attr('data-jio-wie-action', action)
        .attr('data-sidebar-id', sidebarId)
        .appendTo($toolbar);
    });
    $anchor.after($toolbar);
  }

  function scanWidgetsScreen() {
    $('.widgets-holder-wrap:not(#available-widgets):not(.inactive-sidebar):not(.is-jio-wie)').each(function () {
      const $wrap = $(this);
      const $sortables = $wrap.find('.widgets-sortables').first();
      const sidebarId = String($sortables.attr('id') || '');
      if (!sidebarId) return;
      const $description = $sortables.find('.sidebar-description .description').first();
      $wrap.addClass('is-jio-wie');
      injectToolbar($description.length ? $description : $sortables.find('.description').first(), sidebarId);
    });
  }

  function scanCustomizer() {
    const prefix = 'sub-accordion-section-sidebar-widgets-';
    $('.control-section-sidebar:not(.is-jio-wie)').each(function () {
      const $section = $(this);
      const sectionId = String($section.attr('id') || '');
      if (!sectionId.startsWith(prefix) || sectionId.length === prefix.length) return;
      $section.addClass('is-jio-wie');
      const $description = $section.find('.section-meta .description').first();
      injectToolbar($description.length ? $description : $section.find('.accordion-section-title, .customize-section-title').first(), sectionId.slice(prefix.length));
    });
    $('.customize-control-widget_form:not(.is-jio-wie)').each(function () {
      const $nav = $(this).find('.widget-reorder-nav').first();
      if (!$nav.length) return;
      $('<span class="jio-wie-btn-delete dashicons-trash" tabindex="0" role="button"></span>').text(t('removeModule')).appendTo($nav);
      $(this).addClass('is-jio-wie');
    });
  }

  $(document)
    .on('click', '[data-jio-wie-action]', function () {
      const action = String($(this).data('jio-wie-action'));
      const sidebarId = String($(this).data('sidebar-id') || '');
      if (!sidebarId) return;
      if (action === 'template') openTemplateModal(sidebarId);
      else openIoModal(action, sidebarId);
    })
    .on('click keydown', '.jio-wie-btn-delete', function (event) {
      if (event.type === 'keydown' && event.key !== 'Enter' && event.key !== ' ') return;
      event.preventDefault();
      $(this).closest('.customize-control-widget_form').find('.widget-control-remove').first().trigger('click');
    })
    .on('click', '.jio-wie-modal__reload', () => window.location.reload())
    .on('keydown', (event) => {
      if (event.key !== 'Escape') return;
      ioModal.close();
      templateModal.close();
    })
    .on('widget-added', () => {
      if (document.body.classList.contains('wp-customizer')) scanCustomizer();
    });

  $(function () {
    if (!config.ajaxUrl) return;
    if (document.body.classList.contains('widgets-php')) scanWidgetsScreen();
    if (document.body.classList.contains('wp-customizer')) {
      window.wp?.customize?.bind?.('ready', () => window.setTimeout(scanCustomizer, 300));
      $(document).on('click', '.control-panel-widgets .control-section-sidebar', () => window.setTimeout(scanCustomizer, 100));
    }
  });
})(jQuery);