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# frozen_string_literal: true
module PreferredLanguageSwitcher
extend ActiveSupport::Concern
include Gitlab::Utils::StrongMemoize
include PreferredLanguageSwitcherHelper
private
def init_preferred_language
cookies[:preferred_language] = preferred_language
end
def preferred_language
cookies[:preferred_language].presence_in(Gitlab::I18n.available_locales) ||
selectable_language(marketing_site_language) ||
selectable_language(browser_languages) ||
Gitlab::CurrentSettings.default_preferred_language
end
def selectable_language(language_options)
language_options.find { |lan| ordered_selectable_locales_codes.include?(lan) }
end
def ordered_selectable_locales_codes
ordered_selectable_locales.pluck(:value) # rubocop:disable CodeReuse/ActiveRecord
end
def browser_languages
formatted_http_language_header = request.env['HTTP_ACCEPT_LANGUAGE']&.tr('-', '_')
return [] unless formatted_http_language_header
formatted_http_language_header.split(%r{[;,]}).reject { |str| str.start_with?('q') }
end
strong_memoize_attr :browser_languages
def marketing_site_language
return [] unless params[:glm_source]
locale = params[:glm_source].scan(%r{(\w{2})-(\w{2})}).flatten
return [] if locale.empty?
[locale[0], "#{locale[0]}_#{locale[1]}"]
end
end
PreferredLanguageSwitcher.prepend_mod
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