import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import au.com.bytecode.opencsv.CSVReader;


public class Main{
	String position="ABCDEFGHIJKLMNOPQRSTUVWXY";

	//class A
	final int CLASS_A_NAME=0;

	//teacher A
	final int TEACHER_A_TITLE=1;
	final int TEACHER_A_FIRST_NAME=2;
	final int TEACHER_A_LAST_NAME=3;
	final int TEACHER_A_USERNAME=4;
	final int TEACHER_A_PASSWORD=5;

	//student A
	final int STUDENT_A_FIRST=6;
	final int STUDENT_A_LAST=7;
	final int STUDENT_A_GENDER=8;
	final int STUDENT_A_USERNAME=9;
	final int STUDENT_A_PASSWORD=10;

	//class A
	final int CLASS_B_NAME=11;

	//teacher B
	final int TEACHER_B_TITLE=12;
	final int TEACHER_B_FIRST_NAME=13;
	final int TEACHER_B_LAST_NAME=14;
	final int TEACHER_B_USERNAME=15;
	final int TEACHER_B_PASSWORD=16;

	//student B
	final int STUDENT_B_FIRST=17;
	final int STUDENT_B_LAST=18;
	final int STUDENT_B_GENDER=19;
	final int STUDENT_B_USERNAME=20;
	final int STUDENT_B_PASSWORD=21;

	//pen pal pairings
	final int PEN_PALS=22;

	private String classA;
	private String classB;

	private Map<String,Integer> students=new HashMap<String,Integer>();
	private List<String> penPals=new LinkedList<String>();

	public void parse(String file) throws FileNotFoundException{
		CSVReader reader=new CSVReader(new FileReader(file));
	    String[] column;
	    int row=2;
	    try{
	    	reader.readNext();
	    	column=reader.readNext();
	    	classA=column[CLASS_A_NAME];
			classB=column[CLASS_B_NAME];

			System.out.println("\nclass A");
			System.out.println(classA);

			System.out.println("\nclass B");
			System.out.println(classB);

			System.out.println("\nTeacher A");
			System.out.println(classA);
			System.out.println(column[TEACHER_A_TITLE]);
			System.out.println(column[TEACHER_A_FIRST_NAME]);
			System.out.println(column[TEACHER_A_LAST_NAME]);
			System.out.println(column[TEACHER_A_USERNAME]);
			System.out.println(column[TEACHER_A_PASSWORD]);

			System.out.println("\nTeacher B");
			System.out.println(column[TEACHER_B_TITLE]);
			System.out.println(column[TEACHER_B_FIRST_NAME]);
			System.out.println(column[TEACHER_B_LAST_NAME]);
			System.out.println(column[TEACHER_B_USERNAME]);
			System.out.println(column[TEACHER_B_PASSWORD]);

			System.out.println("\nStudent A");
			System.out.println(column[STUDENT_A_FIRST]);
			System.out.println(column[STUDENT_A_LAST]);
			System.out.println(column[STUDENT_A_GENDER]);
			System.out.println(column[STUDENT_A_USERNAME]);
			System.out.println(column[STUDENT_A_PASSWORD]);

			students.put("J"+row,row);//studentId

			System.out.println("\nStudent B");
			System.out.println(column[STUDENT_B_FIRST]);
			System.out.println(column[STUDENT_B_LAST]);
			System.out.println(column[STUDENT_B_GENDER]);
			System.out.println(column[STUDENT_B_USERNAME]);
			System.out.println(column[STUDENT_B_PASSWORD]);

			students.put("U"+row,row);//studentId

			penPals.add(column[PEN_PALS]);

				while((column=reader.readNext())!=null){
					row++;
					try{
						penPals.add(column[PEN_PALS]);
					}
					catch(ArrayIndexOutOfBoundsException e){}

					try{
						System.out.println("\nStudent A");
						System.out.println(column[STUDENT_A_FIRST]);
						System.out.println(column[STUDENT_A_LAST]);
						System.out.println(column[STUDENT_A_GENDER]);
						System.out.println(column[STUDENT_A_USERNAME]);
						System.out.println(column[STUDENT_A_PASSWORD]);
						students.put("J"+row,row);//studentId
					}
					catch(ArrayIndexOutOfBoundsException e){}

					try{
						System.out.println("\nStudent B");
						System.out.println(column[STUDENT_B_FIRST]);
						System.out.println(column[STUDENT_B_LAST]);
						System.out.println(column[STUDENT_B_GENDER]);
						System.out.println(column[STUDENT_B_USERNAME]);
						System.out.println(column[STUDENT_B_PASSWORD]);

						students.put("U"+row,row);//studentId
					}
					catch(ArrayIndexOutOfBoundsException e){}
				}
		}
	    catch(IOException e){
			e.printStackTrace();
		}
	}

	public void getPenPals(){
		System.out.println("\nPenPals");
		for(String pals:penPals){
			String[] tmp=pals.split(" - ");
			for(int i=0;i<tmp.length;i++)
				System.out.print(students.get(tmp[i])+" ");

			System.out.println();
		}
	}

	public static void main(String[] args) throws FileNotFoundException{
		Main m=new Main();
		m.parse(args[0]);
		m.getPenPals();
	}
}