plugin.rb

# frozen_string_literal: true

# name: discourse-translator
# about: Translates posts on Discourse using Microsoft, Google, Yandex, LibreTranslate, or Discourse AI translation APIs.
# meta_topic_id: 32630
# version: 0.3.0
# authors: Alan Tan
# url: https://github.com/discourse/discourse-translator

gem "aws-sdk-translate", "1.35.0", require: false

enabled_site_setting :translator_enabled
register_asset "stylesheets/common/post.scss"
register_asset "stylesheets/common/common.scss"

module ::DiscourseTranslator
  PLUGIN_NAME = "discourse-translator".freeze

  LANG_DETECT_NEEDED = "lang_detect_needed".freeze
end

require_relative "lib/discourse_translator/engine"

after_initialize do
  register_problem_check ProblemCheck::MissingTranslatorApiKey
  register_problem_check ProblemCheck::TranslatorError

  reloadable_patch do
    Guardian.prepend(DiscourseTranslator::GuardianExtension)
    Post.prepend(DiscourseTranslator::PostExtension)
    Topic.prepend(DiscourseTranslator::TopicExtension)
    TopicViewSerializer.prepend(DiscourseTranslator::TopicViewSerializerExtension)
  end

  on(:post_process_cooked) do |_, post|
    if Guardian.new.can_detect_language?(post) && post.user_id > 0
      Discourse.redis.sadd?(DiscourseTranslator::LANG_DETECT_NEEDED, post.id)
    end
  end

  on(:post_process_cooked) do |_, post|
    if SiteSetting.automatic_translation_target_languages.present? && post.user_id > 0
      Jobs.enqueue(:translate_translatable, type: "Post", translatable_id: post.id)
    end
  end

  on(:topic_created) do |topic|
    if SiteSetting.automatic_translation_target_languages.present? && topic.user_id > 0
      Jobs.enqueue(:translate_translatable, type: "Topic", translatable_id: topic.id)
    end
  end

  on(:topic_edited) do |topic|
    if SiteSetting.automatic_translation_target_languages.present? && topic.user_id > 0
      Jobs.enqueue(:translate_translatable, type: "Topic", translatable_id: topic.id)
    end
  end

  add_to_serializer :post, :can_translate do
    scope.can_translate?(object)
  end

  register_modifier(:basic_post_serializer_cooked) do |cooked, serializer|
    if !SiteSetting.experimental_topic_translation ||
         serializer.scope.request.params["show"] == "original" ||
         serializer.object.detected_locale == I18n.locale.to_s.gsub("_", "-")
      cooked
    else
      serializer.object.translation_for(I18n.locale).presence
    end
  end

  register_modifier(:topic_serializer_fancy_title) do |fancy_title, serializer|
    if !SiteSetting.experimental_topic_translation ||
         serializer.scope.request.params["show"] == "original" ||
         serializer.object.detected_locale == I18n.locale.to_s.gsub("_", "-")
      fancy_title
    else
      serializer.object.translation_for(I18n.locale).presence
    end
  end

  register_modifier(:topic_view_serializer_fancy_title) do |fancy_title, serializer|
    if !SiteSetting.experimental_topic_translation ||
         serializer.scope.request.params["show"] == "original" ||
         serializer.object.topic.detected_locale == I18n.locale.to_s.gsub("_", "-")
      fancy_title
    else
      serializer.object.topic.translation_for(I18n.locale).presence
    end
  end
end