module Zendesk2::HelpCenter::TranslationSource
  module Model
    def source=(source)
      if source.is_a?(Zendesk2::HelpCenter::Article)
        self.source_type = "Article"
      elsif source.is_a?(Zendesk2::HelpCenter::Section)
        self.source_type = "Section"
      elsif source.is_a?(Zendesk2::HelpCenter::Category)
        self.source_type = "Category"
      end
      self.source_id = source.id
    end
  end

  module Request
    def source_id
      Integer((params["translation"] || params).fetch("source_id"))
    end

    def source_type
      (params["translation"] || params).fetch("source_type")
    end

    def source_type_url
      case source_type
      when "Article"
        "articles"
      when "Section"
        "sections"
      when "Category"
        "categories"
      end
    end

    def locale
      (params["translation"] || params).fetch("locale") || "en-us"
    end

    # Since Zendesk2::Request#find! calls .to_i on hash keys, we need an integer
    # key for this.
    def mock_translation_key
      [source_type, source_id, locale].join("-").each_byte.inject(0) {|char, acc| acc + char }
    end
  end
end