using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using BlubbFish.Utils;
using NetMonitorServer.Controller;

namespace NetMonitorServer {
  class SetOpenVPNService : ActionClass {

    internal override bool Run(Queue<string> arguments) {
      this.addLog("SetOpenVPNService.Run", "Starte OpenVpn Befehl", LogLevel.Notice);
      if(arguments.Count < 2) {
        this.sendMessage("To less arguments for SetOpenVpnService class");
        return false;
      }
      switch(arguments.Dequeue().ToLower()) {
        case "status":
          return this.getVpnStatus(arguments);
        case"start":
          return this.getVpnStart(arguments);
        case"stop":
          return this.getVpnStop(arguments);
        default:
          this.sendMessage("Wrong arguments for service on SetOpenVpnService class");
          return false;
      }
    }

    private bool getVpnStop(Queue<string> arguments) {
      if(arguments.Count != 1) {
        this.sendMessage("To less arguments for SetOpenVpnService.getVpnStop");
        return false;
      }
      string config = arguments.Dequeue();
      this.addLog("SetOpenVPNService.getVpnStop", "Stoppe OpenVPN: "+config, LogLevel.Notice);
      if(Model.openvpnInstances.Keys.Contains(config)) { //schon in der Liste
        OpenVpnController o = Model.openvpnInstances[config];
        if(o.HasExited) { //läuft nicht! Fehler!
          this.sendMessage("Fehler! Openvpn schon beendet! " + config + " Config");
          return false;
        }
        o.Kill();
      } else { //Noch nicht in der liste
        this.sendMessage("Fehler! Openvpn noch nie gestartet! " + config + " Config");
        return false;
      }
      this.sendMessage("true");
      return true;
    }

    private bool getVpnStart(Queue<string> arguments) {
      if(arguments.Count != 1) {
        this.sendMessage("To less arguments for SetOpenVpnService.getVpnStart");
        return false;
      }
      string config = arguments.Dequeue();
      this.addLog("SetOpenVPNService.getVpnStart", "Starte OpenVPN: " + config, LogLevel.Notice);
      if(Model.openvpnInstances.Keys.Contains(config)) { //schon in der Liste
        OpenVpnController o = Model.openvpnInstances[config];
        if(!o.HasExited) { //läuft noch! Fehler!
          this.sendMessage("Fehler! Openvpn Läuft noch! " + config + " Config");
          return false;
        }
        try {
          o.Start();
        } catch(Exception e) {
          this.sendMessage("Fehler beim Starten von OpenVPN: " + e.Message);
          return false;
        }
      } else { //Noch nicht in der liste
        string ovpn = Factory.getSettings().getValue("program", "openvpn");
        ovpn = (ovpn.EndsWith("\\")) ? ovpn : ovpn + "\\";
        try {
          OpenVpnController o = new OpenVpnController(ovpn, config);
          o.EventLog += this.addLog;
          Model.openvpnInstances.Add(config, o);
          o.Start();
        } catch(Exception e) {
          this.sendMessage("Fehler beim Starten von OpenVPN: " + e.Message);
          return false;
        }
      }
      this.sendMessage("true");
      return true;
    }

    private bool getVpnStatus(Queue<string> arguments) {
      if(arguments.Count != 1) {
        this.sendMessage("To less arguments for SetOpenVpnService.getVpnStatus");
        return false;
      }
      string config = arguments.Dequeue();
      this.addLog("SetOpenVPNService.getVpnStatus", "Status des OpenVPN: " + config, LogLevel.Notice);
      string run = "";
      try {
        if(Model.openvpnInstances.Keys.Contains(config)) {
          OpenVpnController o = Model.openvpnInstances[config];
          if(o.HasExited) {
            run = "disconnected";
          } else if(o.Conntected) {
            run = "connected|" + o.Ip + "|" + o.Dhcp + "|" + o.DhcpLease + "|" + o.IpDate + "|" + o.SuccessDate;
          } else {
            run = "conntecting";
          }
        }
      } catch(Exception e) {
        this.sendMessage(e.Message);
        return false;
      }
      if(run == "") {
        this.sendMessage("unknown");
        return false;
      }
      this.sendMessage("[" + run + "]");
      return true;
    }
  }
}