strapi-plugin-i18n/admin/src/middlewares/utils/addLocaleToLinksSearch.js

This plugin enables to create, to read and to update content in different languages, both from the Admin Panel and from the API

import get from 'lodash/get';
import { stringify, parse } from 'qs';
import getDefaultLocale from '../../utils/getDefaultLocale';

const addLocaleToLinksSearch = (links, kind, contentTypeSchemas, locales, permissions) => {
  return links.map(link => {
    const contentTypeUID = link.destination.split(`/${kind}/`)[1];

    const contentTypeSchema = contentTypeSchemas.find(({ uid }) => uid === contentTypeUID);

    const hasI18nEnabled = get(contentTypeSchema, 'pluginOptions.i18n.localized', false);

    if (!hasI18nEnabled) {
      return link;
    }

    const contentTypePermissions = permissions[contentTypeUID];
    const requiredPermissionsToViewALink =
      kind === 'collectionType'
        ? ['plugins::content-manager.explorer.read', 'plugins::content-manager.explorer.create']
        : ['plugins::content-manager.explorer.read'];

    const contentTypeNeededPermissions = Object.keys(contentTypePermissions).reduce(
      (acc, current) => {
        if (requiredPermissionsToViewALink.includes(current)) {
          acc[current] = contentTypePermissions[current];

          return acc;
        }

        acc[current] = [];

        return acc;
      },
      {}
    );

    const defaultLocale = getDefaultLocale(contentTypeNeededPermissions, locales);

    if (!defaultLocale) {
      return { ...link, isDisplayed: false };
    }

    const linkParams = link.search ? parse(link.search) : {};

    const params = linkParams
      ? { ...linkParams, plugins: { ...linkParams.plugins, i18n: { locale: defaultLocale } } }
      : { plugins: { i18n: { locale: defaultLocale } } };

    const search = stringify(params, { encode: false });

    return { ...link, search };
  });
};

export default addLocaleToLinksSearch;