# frozen_string_literal: true

module BrayniacAI
  class AppearanceReleaseMatching
    class << self
      def match_attachments(request_data)
        # TODO: Send request with request_data and receive real response
        mock_response request_data
      end

      private

      def mock_response(request_data)
        attachments = request_data[:files]
        pdfs = []
        images = []
        matches = []
        errors = []

        # Use first file for the error entry
        first_attachment = attachments.shift
        unless first_attachment.nil?
          errors << { file: first_attachment, error_code: 1 }
        end

        attachments.each do |attachment|
          blob = ActiveStorage::Blob.find_signed attachment
          next if blob.nil?

          if blob.image?
            images << attachment
          else
            pdfs << attachment
          end
        end

        # Create pairs of matches and single headshot/contract after pairs are exhausted
        more_pdfs = pdfs.length > images.length
        pairs = more_pdfs ? pdfs.zip(images) : images.zip(pdfs)
        pairs.each do |pair_element1, pair_element2|
          if more_pdfs
            pdf = pair_element1
            image = pair_element2
          else
            pdf = pair_element2
            image = pair_element1
          end
          if pdf.nil? || image.nil?
            matches << { headshot: image } if pdf.nil?
            matches << { contract: pdf } if image.nil?
          else
            matches << { headshot: image, contract: pdf, identifier: '' }
          end
        end

        {
            request_id: request_data[:request_id],
            matches: matches,
            errors: errors
        }
      end
    end
  end
end