'use strict';

const { difference, keys, intersection, isEmpty } = require('lodash/fp');
const { getService } = require('../../utils');

const migrateForBookshelf = require('./migrate-for-bookshelf');

// Migration when i18n is disabled on a field of a content-type that have i18n enabled
const after = async ({ model, definition, previousDefinition, ORM }) => {
  const { isLocalizedContentType, getLocalizedAttributes } = getService('content-types');

  if (!isLocalizedContentType(model) || !isLocalizedContentType(previousDefinition)) {
    return;
  }

  const localizedAttributes = getLocalizedAttributes(definition);
  const prevLocalizedAttributes = getLocalizedAttributes(previousDefinition);
  const attributesDisabled = difference(prevLocalizedAttributes, localizedAttributes);
  const attributesToMigrate = intersection(keys(definition.attributes), attributesDisabled);

  if (isEmpty(attributesToMigrate)) {
    return;
  }

  await migrateForBookshelf({ ORM, model, attributesToMigrate });
};

const before = () => {};

module.exports = {
  before,
  after,
};