import $ from 'jquery';
import Vue from 'vue';
import Translate from '~/vue_shared/translate';
import eventHub from './event_hub';

Vue.use(Translate);

const frequentItemDropdowns = [
  {
    namespace: 'projects',
    key: 'project',
  },
  {
    namespace: 'groups',
    key: 'group',
  },
];

const initFrequentItemList = (namespace, key) => {
  const el = document.getElementById(`js-${namespace}-dropdown`);

  // Don't do anything if element doesn't exist (No groups dropdown)
  // This is for when the user accesses GitLab without logging in
  if (!el) {
    return;
  }

  import('./components/app.vue')
    .then(({ default: FrequentItems }) => {
      // eslint-disable-next-line no-new
      new Vue({
        el,
        data() {
          const { dataset } = this.$options.el;
          const item = {
            id: Number(dataset[`${key}Id`]),
            name: dataset[`${key}Name`],
            namespace: dataset[`${key}Namespace`],
            webUrl: dataset[`${key}WebUrl`],
            avatarUrl: dataset[`${key}AvatarUrl`] || null,
            lastAccessedOn: Date.now(),
          };

          return {
            currentUserName: dataset.userName,
            currentItem: item,
          };
        },
        render(createElement) {
          return createElement(FrequentItems, {
            props: {
              namespace,
              currentUserName: this.currentUserName,
              currentItem: this.currentItem,
            },
          });
        },
      });
    })
    .catch(() => {});
};

export default function initFrequentItemDropdowns() {
  frequentItemDropdowns.forEach(dropdown => {
    const { namespace, key } = dropdown;
    const navEl = document.getElementById(`nav-${namespace}-dropdown`);

    // Don't do anything if element doesn't exist (No groups dropdown)
    // This is for when the user accesses GitLab without logging in
    if (!navEl) {
      return;
    }

    $(navEl).on('shown.bs.dropdown', () => {
      initFrequentItemList(namespace, key);
      eventHub.$emit(`${namespace}-dropdownOpen`);
    });
  });
}