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mastodon/app/services/translate_status_service.rb

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Ruby

# frozen_string_literal: true
class TranslateStatusService < BaseService
CACHE_TTL = 1.day.freeze
include FormattingHelper
def call(status, target_language)
@status = status
@content = status_content_format(@status)
@target_language = target_language
raise Mastodon::NotPermittedError unless permitted?
Rails.cache.fetch("translations/#{@status.language}/#{@target_language}/#{content_hash}", expires_in: CACHE_TTL) { translation_backend.translate(@content, @status.language, @target_language) }
end
private
def translation_backend
@translation_backend ||= TranslationService.configured
end
def permitted?
return false unless @status.distributable? && @status.content.present? && TranslationService.configured?
languages[@status.language]&.include?(@target_language)
end
def languages
Rails.cache.fetch('translation_service/languages', expires_in: 7.days, race_condition_ttl: 1.hour) { TranslationService.configured.languages }
end
def content_hash
Digest::SHA256.base64digest(@content)
end
end