#!/usr/bin/env elixir

# Test the complete MessageHandler with Mercury Device data
Mix.install([
  {:iso_8583, "~> 0.1.5"}
])

Code.require_file("lib/da_product_app/switch/message_handler.ex")

defmodule MessageHandlerTest do
  alias DaProductApp.Switch.MessageHandler

  def test_mercury_device_data do
    IO.puts("=== Testing Mercury Device Message Handler ===")
    
    # Your actual Mercury device data (with length header)
    hex_data = "001A600078200004007030000000000004000000"
    binary_data = Base.decode16!(hex_data)
    
    IO.puts("Input hex data: #{hex_data}")
    IO.puts("Input binary data: #{inspect(binary_data)}")
    IO.puts("Input size: #{byte_size(binary_data)} bytes")
    
    # Test parsing
    case MessageHandler.parse(binary_data) do
      {:ok, parsed_message, remaining} ->
        IO.puts("\n✅ Successfully parsed message!")
        IO.puts("Parsed message: #{inspect(parsed_message, limit: :infinity)}")
        IO.puts("Remaining data: #{inspect(remaining)}")
        
        # Test encoding the response
        IO.puts("\n=== Testing Response Encoding ===")
        response = MessageHandler.create_response(parsed_message, "00", %{})
        
        case MessageHandler.encode(response) do
          {:ok, encoded} ->
            IO.puts("✅ Successfully encoded response!")
            IO.puts("Encoded response hex: #{Base.encode16(encoded)}")
            IO.puts("Encoded response size: #{byte_size(encoded)} bytes")
          {:error, reason} ->
            IO.puts("❌ Encoding failed: #{inspect(reason)}")
        end
        
      {:incomplete, data} ->
        IO.puts("⚠️ Incomplete data: #{inspect(data)}")
        
      {:error, reason} ->
        IO.puts("❌ Parsing failed: #{inspect(reason)}")
    end
  end
  
  def test_tpdu_configuration do
    IO.puts("\n=== TPDU Configuration Test ===")
    MessageHandler.log_supported_tpdus()
    
    # Test TPDU detection directly
    tpdu_data = <<0x60, 0x00, 0x78, 0x20, 0x00>>
    tpdu_info = MessageHandler.parse_tpdu_info(tpdu_data)
    IO.puts("TPDU Info: #{inspect(tpdu_info)}")
  end
end

# Run the tests
MessageHandlerTest.test_mercury_device_data()
MessageHandlerTest.test_tpdu_configuration()