using System.ServiceProcess;

using NLog;

namespace ZitiDesktopEdge.Server {
    public static class ServiceActions {
        private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
        
        private static ServiceController sc = new ServiceController("ziti");
        public static string ServiceStatus() {
            var status = sc.Status;
            Logger.Debug("service status set to: {0}", sc.Status);

            if (sc.Status == ServiceControllerStatus.StopPending) {
                //ServiceControllerStatus is reporting 'stop pending' when the service crashes or is terminated by a user
                //this is INCORRECT as the service is dead - it is not pending. Test for the process by name and if there's
                //still a process - cool. if NOT - send the 'stopped' message...
                var procs = System.Diagnostics.Process.GetProcessesByName("ziti-tunnel");
                if (procs != null && procs.Length == 1) {
                    // if there's more than one ziti-tunnel that'd be bad too but we can't account for that here
                    Logger.Warn("ServiceControllerStatus is StopPending but there is NO ziti-tunnel process! report service is stopped");
                    return ServiceControllerStatus.Stopped.ToString();
                }
            }
            return status.ToString();
        }

        public static string StartService() {
            Logger.Info("request to start ziti service received... processing...");
            sc.Start();
            sc.WaitForStatus(ServiceControllerStatus.Running, new System.TimeSpan(0,0,30));
            Logger.Info("request to start ziti service received... complete...");
            return ServiceStatus();
        }

        public static string StopService() {
            Logger.Info("request to stop ziti service received... processing...");
            sc.Stop();
            sc.WaitForStatus(ServiceControllerStatus.Stopped, new System.TimeSpan(0, 0, 30));
            Logger.Info("request to stop ziti service received... complete...");
            return ServiceStatus();
        }
    }
}