module ActiveNotifier
  module NotifierAdapters
    class Dingtalk < ActiveAdapter::Implement
      VALID_TYPES = %i[text markdown].freeze

      # (see NotifierAdapters::Abstract#notify)
      # @param title [#to_s]
      # @param at_mobiles [#to_a] ([])
      # @param is_at_all [Boolean] (false)
      def notify(token, type, message, **options)
        webhook = "#{ActiveNotifier.config.adapters_with_base_url.fetch(:dingtalk)}#{token}"
        unless VALID_TYPES.include?(type)
          error_message = "The Dingtalk adapter only support types: #{VALID_TYPES.join(', ')}"
          raise ActiveNotifier::AdapterError, error_message
        end
        if message.empty?
          error_message = "Message of the Dingtalk adapter can't be blank, please check template file"
          raise ActiveNotifier::AdapterError, error_message
        end
        at_mobiles = options[:at_mobiles].to_a
        is_at_all = !!options[:is_at_all]

        body = case type
               when :text
                 get_text_body(message, at_mobiles, is_at_all)
               when :markdown
                 title = options[:title].to_s
                 raise ActiveNotifier::AdapterError, "Dingtalk adapter require other options: title" if title.empty?
                 get_markdown_body(title, message, at_mobiles, is_at_all)
               end
        headers = {
          'Content-Type' => 'application/json',
          'Accept' => 'application/json'
        }
        Net::HTTP.post(URI(webhook), body.to_json, headers)
      end

      private

      def get_text_body(content, at_mobiles, is_at_all)
        {
          msgtype: "text",
          text: {
            content: content
          },
          at: {
            atMobiles: at_mobiles,
            isAtAll: is_at_all
          }
        }
      end

      def get_markdown_body(title, text, at_mobiles, is_at_all)
        {
          msgtype: "markdown",
          markdown: {
            title: title,
            text: text
          },
          at: {
            atMobiles: at_mobiles,
            isAtAll: is_at_all
          }
        }
      end
    end
  end
end