80 lines
2.1 KiB
Ruby
80 lines
2.1 KiB
Ruby
# 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)
|
|
form = { text: text, source_lang: source_language&.upcase, target_lang: target_language, tag_handling: 'html' }
|
|
request(:post, '/v2/translate', form: form) do |res|
|
|
transform_response(res.body_with_limit)
|
|
end
|
|
end
|
|
|
|
def languages
|
|
source_languages = [nil] + fetch_languages('source')
|
|
|
|
# In DeepL, EN and PT are deprecated in favor of EN-GB/EN-US and PT-BR/PT-PT, so
|
|
# they are supported but not returned by the API.
|
|
target_languages = %w(en pt) + fetch_languages('target')
|
|
|
|
source_languages.index_with { |language| target_languages.without(nil, language) }
|
|
end
|
|
|
|
private
|
|
|
|
def fetch_languages(type)
|
|
request(:get, "/v2/languages?type=#{type}") do |res|
|
|
Oj.load(res.body_with_limit).map { |language| normalize_language(language['language']) }
|
|
end
|
|
end
|
|
|
|
def normalize_language(language)
|
|
subtags = language.split(/[_-]/)
|
|
subtags[0].downcase!
|
|
subtags[1]&.upcase!
|
|
subtags.join('-')
|
|
end
|
|
|
|
def request(verb, path, **options)
|
|
req = Request.new(verb, "#{base_url}#{path}", **options)
|
|
req.add_headers(Authorization: "DeepL-Auth-Key #{@api_key}")
|
|
req.perform do |res|
|
|
case res.code
|
|
when 429
|
|
raise TooManyRequestsError
|
|
when 456
|
|
raise QuotaExceededError
|
|
when 200...300
|
|
yield res
|
|
else
|
|
raise UnexpectedResponseError
|
|
end
|
|
end
|
|
end
|
|
|
|
def base_url
|
|
if @plan == 'free'
|
|
'https://api-free.deepl.com'
|
|
else
|
|
'https://api.deepl.com'
|
|
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, provider: 'DeepL.com')
|
|
rescue Oj::ParseError
|
|
raise UnexpectedResponseError
|
|
end
|
|
end
|