import java.util.*;
import java.io.*;
import redis.clients.jedis.Jedis; 

class MakeCourse {

    public static void main(String[] args) throws FileNotFoundException {

	// hostname is command-line arg, or localhost by default
	String hostname = "localhost";
	if(args.length>0){
	    hostname = args[0];
	}

	//Connecting to Redis server on localhost 
	Jedis jedis = new Jedis(hostname); 
	System.out.println("Connection to server sucessfully"); 
	//check whether server is running or not 
	System.out.println("Server is running: "+jedis.ping()); 

	Scanner scan = new Scanner(new File("course.txt"));

	while(scan.hasNextLine()){
	    String line = scan.nextLine();
	    String[] parsed = line.split("\t");
	    if(parsed.length!=3){
		System.out.println("error in line:"+line);
	    }
	    else {
		String cid = parsed[0];
		String title = parsed[1];
		String deptid = parsed[2];
		String dname = jedis.get("dept:"+deptid+":dname");
		System.out.println("cid:"+cid+" title:"+title+" deptid:"+deptid+" dname:"+dname);
		jedis.rpush("course",cid);
		jedis.set("course:"+cid+":title",title);
		jedis.set("course:"+cid+":deptid",deptid);
		jedis.hset("course:"+cid,"title",title);
		jedis.hset("course:"+cid,"deptid",deptid);
		if(dname!=null){
		    jedis.set("course:"+cid+":dname",dname);
		    jedis.hset("course:"+cid,"dname",dname);
		}
	    }
	}
    }
}