import java.io.File;
import java.util.*;


public class Assign6 {
	private String slevel, payload;  //Options to be read into each packet
	private int dest, option;  //Options to be read into a packet or a command
	private Router r;    // The Router instantiation
	
	public Assign6(int x) {
		r = new Router(x);
	}

	//Routine to read in the info for the ADDPACKET command
	private boolean addP (Scanner cmdData) {

		Packet p= new Packet();  //Create a new packet and fill
		dest = cmdData.nextInt();
		slevel = cmdData.next();
		cmdData.nextLine();
		payload = cmdData.nextLine();
		
		if (!p.setPkDestPort(dest)) {
			System.err.println ("Destination not valid in packet");
			return false;
		}
		//This part sets the service level
		if (slevel.equals("H"))
			p.setPkServiceLevel(Packet.ServiceLevel.HIGH);
		else 
			p.setPkServiceLevel(Packet.ServiceLevel.NORMAL);
		//Now set the payload
		if (!p.setPkPayload(payload)) {
			System.err.println ("Payload not valid in packet");
			return false;
		}
		// Call the router addPacket routine 
		r.addPacket(p);
		return true;
	}
	//Routine to read in commands and exercise the router
	private boolean readCommand (Scanner cmdData){

		try {
		String cmd = cmdData.next(); 
		if (cmd.equals("END"))
			return false;
		if (cmd.equals("ADDPACKET")) {
			if (!addP(cmdData)) 
				System.out.println ("Packet not added");
		} else if (cmd.equals("PRINT")) {
				option = cmdData.nextInt();
				if (!r.print(option))
					System.err.println ("Print option not recognized");
		} else if (cmd.equals("PROCESSPACKET")) {
			r.processPacket();
		} else if (cmd.equals("REMOVEPACKET")) {
			option = cmdData.nextInt();
			if (r.removePacket(option) == null)
				System.out.println ("Packet not found");
		}
		return true;
		} catch (Exception e) {
			System.out.println ("Error in input file format");
			return false;
		}
	}
	// Client driver
	public static void main (String[] args) {
		Scanner cmdData = null;
		int hpct=0; 
		try {
			//Open the input file and read in the percentages
			  cmdData = new Scanner(new File(args[0]));
			  hpct = cmdData.nextInt();
		} catch (Exception e) {
			e.printStackTrace();
			System.out.println ("Usage java Assign6 inputfile");
			System.exit(0);
		}
		//Fire up the assignment and start reading commands
		Assign6 A6 = new Assign6(hpct);
		while (A6.readCommand(cmdData));
	}
}