# frozen_string_literal: true class MoveGlitchUserSettings < ActiveRecord::Migration[6.1] disable_ddl_transaction! class User < ApplicationRecord; end MAPPING = { favourite_modal: 'web.favourite_modal', system_emoji_font: 'web.use_system_emoji_font', hide_followers_count: 'hide_followers_count', default_content_type: 'default_content_type', flavour: 'flavour', skin: 'skin', notification_emails: { trending_link: 'notification_emails.link_trends', trending_status: 'notification_emails.status_trends', }.freeze, }.freeze class LegacySetting < ApplicationRecord self.table_name = 'settings' def var self[:var]&.to_sym end def value YAML.safe_load(self[:value], permitted_classes: [ActiveSupport::HashWithIndifferentAccess, Symbol]) if self[:value].present? end end def up User.find_in_batches do |users| previous_settings_for_batch = LegacySetting.where(thing_type: 'User', thing_id: users.map(&:id)).group_by(&:thing_id) users.each do |user| previous_settings = previous_settings_for_batch[user.id]&.index_by(&:var) || {} user_settings = Oj.load(user.settings || '{}') user_settings.delete('theme') MAPPING.each do |legacy_key, new_key| value = previous_settings[legacy_key]&.value next if value.nil? if value.is_a?(Hash) value.each do |nested_key, nested_value| user_settings[MAPPING[legacy_key][nested_key.to_sym]] = nested_value end else user_settings[new_key] = value end end user.update_column('settings', Oj.dump(user_settings)) end end end def down; end end