using Hcs.Broker.Logger;
using System.Text;

namespace Hcs.Broker.MessageCapturer
{
    /// <summary>
    /// Реализация механизма захвата содержимого сообщений SOAP, записывающая
    /// каждое сообщение в отдельный файл на диске
    /// </summary>
    public class FileMessageCapturer(string directory, ILogger logger) : IMessageCapturer
    {
        private readonly string directory = directory;
        private readonly ILogger logger = logger;

        public string LastFileName { get; private set; }

        public event Action<string> OnFileWritten;

        public void CaptureMessage(bool sent, string messageBody)
        {
            var index = 0;
            var maxIndex = 1000000;
            string fileName;
            do
            {
                index += 1;

                if (index > maxIndex)
                {
                    throw new Exception("index value exceeds maxIndex value");
                }

                fileName = index.ToString("D3") + "_" + (sent ? "message" : "response") + ".xml";

                if (!string.IsNullOrEmpty(directory))
                {
                    if (!Directory.Exists(directory))
                    {
                        Directory.CreateDirectory(directory);
                    }

                    fileName = Path.Combine(directory, fileName);
                }
            }
            while (File.Exists(fileName));

            logger?.WriteLine($"Capturing message to file {fileName}...");

            File.WriteAllText(fileName, messageBody, Encoding.UTF8);

            LastFileName = fileName;

            OnFileWritten?.Invoke(fileName);
        }
    }
}