using System;
using System.Diagnostics;
using System.Linq;
using System.Threading;

namespace SoraV2Utils_Service
{
    internal class AgentProcessHandler
    {
        private Process _notificationHandlerProcess;

        public AgentProcessHandler()
        {
            RunAgentHandler();
        }

        private void RunAgentHandler()
        {
            string notificationHandlerPath = GetNotificationHandlerPath();

            if (LaunchProcess(notificationHandlerPath))
            {
                _notificationHandlerProcess = GetRunningProcess("SoraV2Utils_Agent");

                if (_notificationHandlerProcess != null)
                {
                    _notificationHandlerProcess.Exited += OnNotificationHandlerExited;
                    _notificationHandlerProcess.EnableRaisingEvents = true;
                }
            }
            else
            {
                Console.WriteLine("Failed to start the notification handler process.");
            }
        }

        private string GetNotificationHandlerPath()
        {
            return AppDomain.CurrentDomain.BaseDirectory + "\\SoraV2Utils_Agent.exe";
        }

        private bool LaunchProcess(string path)
        {
            try
            {
                ApplicationLauncher.CreateProcessInConsoleSession(path, true);
                return true;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error launching process: {ex.Message}");
                return false;
            }
        }

        private Process GetRunningProcess(string processName)
        {
            return Process.GetProcessesByName(processName).FirstOrDefault();
        }

        private void OnNotificationHandlerExited(object sender, EventArgs e)
        {
            Console.WriteLine("Process exited. Restarting...");
            RestartNotificationHandler();
        }

        private void RestartNotificationHandler()
        {
            Thread.Sleep(1000); // Delay before restarting the process
            RunAgentHandler();
        }

        public void StopNotificationHandler()
        {
            if (_notificationHandlerProcess != null && !_notificationHandlerProcess.HasExited)
            {
                _notificationHandlerProcess.Kill();
                _notificationHandlerProcess.WaitForExit(); // Ensure the process is fully terminated
                Console.WriteLine("Process stopped.");
            }

            UnsubscribeFromExitEvent();
        }

        private void UnsubscribeFromExitEvent()
        {
            if (_notificationHandlerProcess != null)
            {
                _notificationHandlerProcess.Exited -= OnNotificationHandlerExited;
                Console.WriteLine("Event handler unregistered.");
            }
        }
    }
}