using AppServerWatchDogService.Enums;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;

namespace AppServerWatchDogService
{
    public class ServiceControlUtils
    {
        /// <summary>
        /// Start a service by it's name
        /// </summary>
        /// <param name="ServiceName"></param>
        public static void startService(string ServiceName)
        {
            try
            {
                ServiceController sc = new ServiceController();
                sc.ServiceName = ServiceName;

                AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("The {0} service status is currently set to {1}", ServiceName, sc.Status.ToString()), EventLogEntryType.Information, (Int32)EventId.EVENT_WATCHDOG);

                if (sc.Status == ServiceControllerStatus.Stopped)
                {
                    // Start the service if the current status is stopped.
                    AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Starting the {0} service ...", ServiceName), EventLogEntryType.Information, (Int32)EventId.EVENT_WATCHDOG);
                    try
                    {
                        // Start the service, and wait until its status is "Running".
                        sc.Start();
                        sc.WaitForStatus(ServiceControllerStatus.Running);

                        // Display the current service status.
                        AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("The {0} service status is now set to {1}.", ServiceName, sc.Status.ToString()), EventLogEntryType.Information, (Int32)EventId.EVENT_WATCHDOG);
                    }
                    catch (InvalidOperationException e)
                    {
                        AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Could not start the {0} service." + Environment.NewLine + e.ToString(), ServiceName), EventLogEntryType.Error, (Int32)EventId.EVENT_WATCHDOG);
                    }
                }
                else
                {
                    AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Service {0} already running.", ServiceName), EventLogEntryType.Warning, (Int32)EventId.EVENT_WATCHDOG);
                }
            }

            catch (Exception ex)
            {
                AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Could not start the {0} service. Because: " + ex.ToString(), ServiceName), EventLogEntryType.Error, (Int32)EventId.EVENT_WATCHDOG);
            }
        }

        /// <summary>
        /// Stop a service that is active
        /// </summary>
        /// <param name="ServiceName"></param>
        public static void stopService(string ServiceName)
        {
            try
            {
                ServiceController sc = new ServiceController();
                sc.ServiceName = ServiceName;

                AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("The {0} service status is currently set to {1}", ServiceName, sc.Status.ToString()), EventLogEntryType.Information, (Int32)EventId.EVENT_WATCHDOG);

                if (sc.Status == ServiceControllerStatus.Running)
                {
                    // Start the service if the current status is stopped.
                    AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Stopping the {0} service ...", ServiceName), EventLogEntryType.Information, (Int32)EventId.EVENT_WATCHDOG);
                    try
                    {
                        // Start the service, and wait until its status is "Running".
                        sc.Stop();
                        sc.WaitForStatus(ServiceControllerStatus.Stopped);

                        // Display the current service status.
                        AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("The {0} service status is now set to {1}.", ServiceName, sc.Status.ToString()), EventLogEntryType.Information, (Int32)EventId.EVENT_WATCHDOG);
                    }
                    catch (InvalidOperationException e)
                    {
                        AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Could not stop the {0} service." + Environment.NewLine + e.ToString(), ServiceName), EventLogEntryType.Error, (Int32)EventId.EVENT_WATCHDOG);

                    }
                }
                else
                {
                    AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Cannot stop service {0} because it's already inactive.", ServiceName), EventLogEntryType.Warning, (Int32)EventId.EVENT_WATCHDOG);
                }
            }
            catch (Exception ex)
            {
                AppServerWatchDogService.WriteEventLog(Program.COMPANY, String.Format("Could not stop the {0} service. Because: " + ex.ToString(), ServiceName), EventLogEntryType.Error, (Int32)EventId.EVENT_WATCHDOG);
            }
        }

        public static bool IsServiceRunning(string ServiceName)
        {
            try
            {
                ServiceController sc = new ServiceController();
                sc.ServiceName = ServiceName;

                if (sc.Status == ServiceControllerStatus.Running)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch
            {
                return false;
            }
        }

    }
}