import $ from 'jquery';
import Api from '~/api';
import { sprintf, __ } from '~/locale';

const formatResult = selectedItem => {
  if (selectedItem.path_with_namespace) {
    return `<div class='project-result'> <div class='project-name'>${selectedItem.name}</div> <div class='project-path'>${selectedItem.path_with_namespace}</div> </div>`;
  } else if (selectedItem.path) {
    return `<div class='group-result'> <div class='group-name'>${selectedItem.name}</div> <div class='group-path'>${selectedItem.path}</div> </div>`;
  }
  return `<div class='group-result'> <div class='group-name'>${__(
    'All',
  )}</div> <div class='group-path'>${__('All groups and projects')}</div> </div>`;
};

const formatSelection = selectedItem => {
  if (selectedItem.path_with_namespace) {
    return sprintf(__('Project: %{name}'), { name: selectedItem.name });
  } else if (selectedItem.path) {
    return sprintf(__('Group: %{name}'), { name: selectedItem.name });
  }
  return __('All groups and projects');
};

const AdminEmailSelect = () => {
  $('.ajax-admin-email-select').each((i, select) =>
    $(select).select2({
      placeholder: __('Select group or project'),
      multiple: $(select).hasClass('multiselect'),
      minimumInputLength: 0,
      query(query) {
        const groupsFetch = Api.groups(query.term, {});
        const projectsFetch = Api.projects(query.term, {
          order_by: 'id',
          membership: false,
        });
        return Promise.all([projectsFetch, groupsFetch]).then(([projects, groups]) => {
          const all = {
            id: 'all',
          };
          const data = [all].concat(groups, projects.data);
          return query.callback({
            results: data,
          });
        });
      },
      id(object) {
        if (object.path_with_namespace) {
          return `project-${object.id}`;
        } else if (object.path) {
          return `group-${object.id}`;
        }
        return 'all';
      },
      formatResult(...args) {
        return formatResult(...args);
      },
      formatSelection(...args) {
        return formatSelection(...args);
      },
      dropdownCssClass: 'ajax-admin-email-dropdown',
      escapeMarkup(m) {
        return m;
      },
    }),
  );
};

export default () =>
  import(/* webpackChunkName: 'select2' */ 'select2/select2')
    .then(AdminEmailSelect)
    .catch(() => {});
