package dao.ex1;

import java.io.IOException;
import java.net.ServerSocket;
import java.util.HashMap;
import java.util.Map;

import dao.Student;

/**
 * This file is a driver for the grade service. Clients may ask to read a
 * grade from one of the students, and the information is sent back to the
 * requester. Communication happens via a socket connection.
 * 
 * @author Fernando Pereira
 *
 */
public class GradeServer {
  public static void main(String[] args) {
    Map<Long, Student> students = new HashMap<Long, Student>();
    loadDB(students);
    ServerSocket serverSocket = null;
    boolean listening = true;
    try {
      serverSocket = new ServerSocket(4444);
      while (listening) {
        new StudentHandlerThread(serverSocket.accept(), students).start();
      }
      serverSocket.close();
    } catch (IOException e) {
      e.printStackTrace();
      System.exit(-1);
    }
  }

  private static void loadDB(Map<Long, Student> students) {
    students.put(200934878L, new Student(200934878L, "Alberico", 90.5));
    students.put(200755120L, new Student(200755120L, "Bernadino", 71.0));
    students.put(200723139L, new Student(200723139L, "Romao", 84.0));		
  }

}