//package Simulator;

import java.io.*;

/**
  * Models routers in the simulator.
*/
public class Router extends NetComponents {

    // Fields
    private int number;   // router number
    protected float Weight;
    double LocalTime;   // need to be reset to zero in Cprobing Statistic
                        // need to be set in Adaptive probe measurement  
    private NetworkConfigure simulator;

    PrintWriter OFILE;

    // only used for web traffic pattern
    boolean parent = false; // simulator parent class is Simulator or CprobStatistic


    public Router(NetworkConfigure simulator, int i) {
       
       this.number = i;
       this.Weight = (float) 1.0;
       this.LocalTime = 0.0;
       this.simulator = simulator;
       try {
          this.OFILE = new PrintWriter(new FileWriter("RFile"+i+".txt"));
       }
       catch (IOException e) {
       }
    }

    /*
    // Constructor for simulator call
    public Router(Measurement simulator, int i) {
        this.number = i;
        this.Weight = (float) 1.0;
        this.LocalTime = 0.0;
        this.simulator = simulator;
        this.parent = true;
        try {
          this.OFILE = new PrintWriter(new FileWriter("RFile"+i+".txt"));
        }
        catch (IOException e) {
        }
    }

    // Constructor for CprobStatistic call
    public Router(CprobStatistic simulator, int i) {
        this.number = i;
        this.Weight = (float) 1.0;
        this.LocalTime = 0.0;
        this.simulator = simulator;
        try {
          this.OFILE = new PrintWriter(new FileWriter("RFile"+i+".txt"));
        }
        catch (IOException e) {
        }
    } */

    // Commands
    public boolean EventHandler (Message Mess) {
      int index = 0;
      double ATime = Mess.getArrivalTime();
      if (Mess.MessageType.compareTo("ICMP-request") == 0)
        index = Mess.NextObjectIndex;
      else
        index = 2*(simulator.RoadTable[Mess.RouterTableNum].numOfNode-1)-Mess.NextObjectIndex; //"ICMP-response"


      boolean responseMess_GetToDestination =
              Mess.setNextNode(simulator.RoadTable[Mess.RouterTableNum].numOfNode);

      if (!responseMess_GetToDestination) { // not get to the destination
        if (LocalTime < Mess.getArrivalTime()) {
          LocalTime = Mess.getArrivalTime();
        }

        if (LocalTime > Mess.getArrivalTime()) {
          if ((Mess.MessageType.compareTo("ICMP-request") == 0)
             || (Mess.MessageType.compareTo("ICMP-response") == 0))
            Mess.QueuingTime[index] = LocalTime - Mess.getArrivalTime();
        }
        else {
          if ((Mess.MessageType.compareTo("ICMP-request") == 0)
             || (Mess.MessageType.compareTo("ICMP-response") == 0))
            Mess.QueuingTime[index] = 0.0;
        }

        double switchingtime = Mess.getSize()/ simulator.RouterBandwidth;
        LocalTime += switchingtime + ((simulator.msgProcessingTime +
                  Mess.getSize()/simulator.msgProcessingSpeed) / Weight);
        Mess.setTime(LocalTime);
      }


      OFILE.println(Mess.MessNum + "  : "+ATime+"  |  "+LocalTime+"  |  "+Mess.MessageType);
      return responseMess_GetToDestination;
    }

    // Queries
    public double getLocalTime() {
        return LocalTime;
    }
}