Eancom::Definition.create(name: 'd96a', type: :desadv) do |document, config|
  document.envelope do |envelope|
    envelope.segment "UNA:+.? '"
    envelope.segment "UNB" do |segment|
      segment.composite "UNOC:3"
      segment.composite "#{config.sender_iln}:14"
      segment.composite "#{config.receiver_iln}:14"
      segment.composite Time.now.strftime("%y%m%d:%H%M")
      segment.composite "#{config.build_id}"
      segment.composite
      segment.composite "DESADV"
      segment.composite
      segment.composite
      segment.composite "EANCOM"
    end
  end

  document.message "UHN" do |message|

    # Message ID
    message.composite "1" # Message ID
    message.composite "DESADV:D:96A:UN:EAN005"

    message.segment "BGM" do |segment|
      segment.composite "351"
      segment.composite "#{config.delivery_note_id}"
      segment.composite "9"
    end

    # Document Date
    message.segment "DTM" do |segment|
      segment.composite "137:#{Time.now.strftime("%Y%m%d")}:102"
    end

    # Shipping Date
    message.segment "DTM" do |segment|
      segment.composite "11:#{Time.now.strftime("%Y%m%d")}:102"
    end

    # Order Reference
    message.segment "RFF" do |segment|
      segment.composite "VN:#{config.order_id}"
    end

    # Sender ILN
    message.segment "NAD" do |segment|
      segment.composite "SU"
      segment.composite "#{config.sender_iln}::9"
    end

    # Manufacturer ILN
    message.segment "NAD" do |segment|
      segment.composite "MF"
      segment.composite "#{config.sender_iln}::9"
    end

    # Reciver ILN
    message.segment "NAD" do |segment|
      segment.composite "BY"
      segment.composite "#{config.receiver_iln}::9"
    end

    # Destination ILN
    message.segment "NAD" do |segment|
      segment.composite "DP"
      segment.composite "#{config.receiver_iln}::9"
    end

    # Final Recipient ILN
    message.segment "NAD" do |segment|
      segment.composite "UC"
      segment.composite "#{config.receiver_iln}::9"
    end

    # Delivery Note Mode
    message.segment "CPS" do |segment|
      segment.composite "1"
    end

    # Items
    total_quantity = 0
    config.items.each_with_index do |item, index|
      total_quantity += item.quantity.to_i

      message.segment "LIN" do |segment|
        segment.composite "#{index+1}"
        segment.composite
        segment.composite "#{item.ean}:EN"
      end

      message.segment "QTY" do |segment|
        segment.composite "12:#{item.quantity}:PCE"
      end
    end

    # Total Quantity
    message.segment "CNT" do |segment|
      segment.composite "1:#{total_quantity}"
    end

    # Position Count
    message.segment "CNT" do |segment|
      segment.composite "2:#{config.items.count}"
    end
  end
end