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# frozen_string_literal: true
class TranslationService::DeepL < TranslationService
include JsonLdHelper
def initialize(plan, api_key)
super()
@plan = plan
@api_key = api_key
end
def translate(text, source_language, target_language)
request(text, source_language, target_language).perform do |res|
case res.code
when 429
raise TooManyRequestsError
when 456
raise QuotaExceededError
when 200...300
transform_response(res.body_with_limit)
else
raise UnexpectedResponseError
end
end
end
private
def request(text, source_language, target_language)
req = Request.new(:post, endpoint_url, form: { text: text, source_lang: source_language&.upcase, target_lang: target_language, tag_handling: 'html' })
req.add_headers('Authorization': "DeepL-Auth-Key #{@api_key}")
req
end
def endpoint_url
if @plan == 'free'
'https://api-free.deepl.com/v2/translate'
else
'https://api.deepl.com/v2/translate'
end
end
def transform_response(str)
json = Oj.load(str, mode: :strict)
raise UnexpectedResponseError unless json.is_a?(Hash)
Translation.new(text: json.dig('translations', 0, 'text'), detected_source_language: json.dig('translations', 0, 'detected_source_language')&.downcase)
rescue Oj::ParseError
raise UnexpectedResponseError
end
end
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