Untitled

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;

namespace SAPAutomation.utils
{
    public class SapHelper
    {
        private dynamic sapGuiApp;
        private dynamic sapConnection;
        private dynamic sapSession;

        public bool CheckSAPInstallation()
        {
            //string sapPath = @"C:\Program Files\SAP\FrontEnd\SAPGUI\saplogon.exe";
            //return System.IO.File.Exists(sapPath);
            return true;
        }

        public void StartSAPLogon()
        {
            string sapPath = @"C:\Program Files\SAP\FrontEnd\SAPGUI\saplogon.exe";
            Process.Start(sapPath);
            Console.WriteLine($"[{DateTime.Now}] SAP Logon started.");
            Thread.Sleep(5000); // Wait for SAP Logon to start
            ConnectToSAP();
        }

        public void ConnectToSAP(string systemName = "SR5")
        {
            Console.WriteLine($"[{DateTime.Now}] Connecting to SAP GUI...");
            Type sapGuiType = Type.GetTypeFromProgID("SapGui.ScriptingCtrl.1");

            if (sapGuiType == null)
                throw new Exception("SAP GUI Scripting Control not found. Ensure it is registered and installed.");

            sapGuiApp = Activator.CreateInstance(sapGuiType);
            sapConnection = sapGuiApp.OpenConnection(systemName);

            if (sapConnection == null)
                throw new Exception("Failed to open SAP connection. Ensure the system name is correct.");

            Console.WriteLine($"[{DateTime.Now}] Connection established!");

            // Wait for session readiness
            int maxWaitTime = 15000;
            int waitInterval = 1000;
            int elapsedTime = 0;

            while (sapConnection.Children.Count == 0 && elapsedTime < maxWaitTime)
            {
                Console.WriteLine($"[{DateTime.Now}] Waiting for SAP session to be ready...");
                Thread.Sleep(waitInterval);
                elapsedTime += waitInterval;
            }

            if (sapConnection.Children.Count == 0)
                throw new Exception("No active SAP session found after waiting.");

            sapSession = sapConnection.Children(0);
            Console.WriteLine($"[{DateTime.Now}] SAP session is ready.");
        }

        public void EnterUsername(string username)
        {
            Console.WriteLine($"[{DateTime.Now}] Entering username...");
            sapSession.FindById("wnd[0]/usr/txtRSYST-BNAME").Text = username;
            Thread.Sleep(500);
        }

        public void EnterPassword(string password)
        {
            Console.WriteLine($"[{DateTime.Now}] Entering password...");
            sapSession.FindById("wnd[0]/usr/pwdRSYST-BCODE").Text = password;
            Thread.Sleep(500);
        }

        public void ClickLoginButton()
        {
            Console.WriteLine($"[{DateTime.Now}] Clicking login button...");
            sapSession.FindById("wnd[0]/tbar[0]/btn[0]").Press();
            Thread.Sleep(3000);
        }

        public bool VerifySuccessfulLogin()
        {
            try
            {
                // Check if the SAP status bar exists
                dynamic statusBar = sapSession.FindById("wnd[0]/sbar");
                if (statusBar != null && !string.IsNullOrEmpty(statusBar.Text))
                {
                    Console.WriteLine($"[{DateTime.Now}] SAP Status Bar Message: {statusBar.Text}");
                    return true; // Login successful
                }

                // Alternative: Check if a known SAP element is visible
                dynamic mainToolbar = sapSession.FindById("wnd[0]/tbar[0]/okcd");
                if (mainToolbar != null)
                {
                    Console.WriteLine($"[{DateTime.Now}] SAP main window is visible.");
                    return true;
                }

                return false;
            }
            catch
            {
                return false;
            }
        }

        public void CloseSAP()
        {
            try
            {
                Console.WriteLine($"[{DateTime.Now}] Closing SAP session...");

                // Check if sapSession exists before closing
                if (sapSession != null)
                {
                    sapSession.FindById("wnd[0]/tbar[0]/okcd").Text = "/nex"; // Exit SAP
                    sapSession.FindById("wnd[0]").SendVKey(0);
                    Thread.Sleep(2000);
                }
                else
                {
                    Console.WriteLine($"[{DateTime.Now}] SAP session is null, skipping session logout.");
                }

                // Close SAP Logon if still running
                var sapProcesses = Process.GetProcessesByName("saplogon");
                if (sapProcesses.Length > 0)
                {
                    Console.WriteLine($"[{DateTime.Now}] SAP Logon is running, attempting to close...");
                    foreach (var process in sapProcesses)
                    {
                        process.Kill();
                    }
                }
                else
                {
                    Console.WriteLine($"[{DateTime.Now}] No SAP Logon process found.");
                }

                Console.WriteLine($"[{DateTime.Now}] SAP session closed successfully.");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"[{DateTime.Now}] Error closing SAP: {ex.Message}");
            }
        }

    }
}