// ********************************************* client program

import java.util.Scanner;
import java.net.*;
import java.io.*;

public class CompositionDemo6
{
	
   public static void main(String[] args)
   {
      Student[] classRoster = new Student[5]; // class of 5 students
      
      loadData("http://dl.dropbox.com/u/28874140/CompositionDemo6Data.txt", classRoster);
      // see Mr. Minich to learn how to store your own data text file in the Public folder of your dropbox.com account

      // display all information
      for (int i = 0; i < classRoster.length; i++)
      {
         System.out.println(classRoster[i]);
      }
        
      // using linear search to find class valedictorian
      double maxGPA = classRoster[0].computeGPA();
      Name nameOfStudentWithMaxGPA = classRoster[0].getName();
		
      for (int i = 1; i < classRoster.length; i++)
      {
         double nextStudentGPA = classRoster[i].computeGPA();
            
         if (nextStudentGPA > maxGPA)
         {
            maxGPA = nextStudentGPA;
            nameOfStudentWithMaxGPA = classRoster[i].getName();
         }
      }
		
      System.out.println(nameOfStudentWithMaxGPA.getFirstName() + " " + nameOfStudentWithMaxGPA.getLastName() + " is the class valedictorian with a gpa of " + maxGPA);
    
      // input a student's name and the name of a class
      Scanner keyboard = new Scanner(System.in);
      System.out.print("Enter a student's last name (e.g. Smith): ");
      String lastName = keyboard.nextLine();
      System.out.print("Enter a student's first name: ");
      String firstName = keyboard.nextLine();
      System.out.print("Enter a course (e.g. English): ");
      String course = keyboard.nextLine();  
        
      // display what class period he/she attends that course 
        
      for (int studentNum = 0; studentNum < classRoster.length; studentNum++)
      {
         if (classRoster[studentNum].getName().getLastName().equals(lastName) && 
        			classRoster[studentNum].getName().getFirstName().equals(firstName))
         {
        		
            for (int period = 0; period < classRoster[studentNum].getSchedule().length; period++)
            {
        			
               if (classRoster[studentNum].getSchedule()[period].equals(course))
               {
                  System.out.println("He/she has " + course + " class during period: " + (period + 1));
               }
        			
            }
        		
         }
        	
      }
        

      // input a student's last name, first name, a class period, and a semester number (1 or 2)
      System.out.print("Enter a student's last name: ");
      lastName = keyboard.nextLine();
      System.out.print("Enter a student's first name: ");
      firstName = keyboard.nextLine();
      System.out.print("Enter a class period (1, 2, 3, or 4): ");
      int classPeriod = keyboard.nextInt();  
      System.out.print("Enter a semester number (1 or 2): ");
      int semesterNum = keyboard.nextInt();  
        
      // display that semester's grade percent
      for (int studentNum = 0; studentNum < classRoster.length; studentNum++)
      {
        	
         if (classRoster[studentNum].getName().getLastName().equals(lastName) && 
        			classRoster[studentNum].getName().getFirstName().equals(firstName))
         {
            int grade = classRoster[studentNum].getGrades()[classPeriod - 1][semesterNum - 1];
            System.out.println("His/her gpa in that class in that semester was: " + grade);
         }
        	
      }
		
      // Part 4
      // pseudocode:
      // loop through all students
      //    get this student's grades for each class and each semester
      //        add each grade to the running total
      // display overall average by dividing running total by the count of grades that were added
		
      // Part 5
      // pseudocode:
      // you figure it out
		
		
      // Part 6
		
		
      // Part 7
		
      keyboard.close();
   }
    
   private static void loadData(String webPageAddress, Student[] classRoster)
   {
      try 
      {
         URL url = new URL(webPageAddress);	
         Scanner in = new Scanner(url.openStream());

         int studentNum = 0;
    		
         while (in.hasNextLine())
         {
            String first = in.nextLine();
            String last = in.nextLine();
            int gradeLevel = in.nextInt(); in.nextLine(); 
            String course1 = in.nextLine();
            String course2 = in.nextLine();
            String course3 = in.nextLine();
            String course4 = in.nextLine();
    			
            int course1Semester1grade = in.nextInt(); 
            int course1Semester2grade = in.nextInt(); in.nextLine();
            int course2Semester1grade = in.nextInt();
            int course2Semester2grade = in.nextInt(); in.nextLine();
            int course3Semester1grade = in.nextInt(); 
            int course3Semester2grade = in.nextInt();in.nextLine();
            int course4Semester1grade = in.nextInt();
            int course4Semester2grade = in.nextInt(); if (in.hasNextLine()) in.nextLine();
    			
            classRoster[studentNum] = new Student(new Name(first, last), gradeLevel, new String[]{course1, course2, course3, course4}, new int[][]{{course1Semester1grade, course1Semester2grade}, {course2Semester1grade, course2Semester2grade}, {course3Semester1grade, course3Semester2grade}, {course4Semester1grade, course4Semester2grade}});
            studentNum++;
         }
    		
         in.close();
      } 
      catch (MalformedURLException me) { System.err.println(me); }
      catch (IOException ioe) { System.err.println(ioe); }
   }
    
}








///////////////////////////////////////////////// Name class
class Name
{
    // ************************************ instance fields
    private String myFirstName;
    private String myLastName;

    // ************************************ constructors
    public Name(String first, String last)
    {
        myFirstName = first;
        myLastName = last;
    }
 
    // ************************************ accessor methods
    public String getLastName()
    {
        return myLastName;
    }
    
    public String getFirstName()
    {
        return myFirstName;
    }
    
    // ************************************ modifier methods
    public void setFirstName(String first)
    {
        myFirstName = first;
    }
    
    public void setLastName(String last)
    {
        myLastName = last;
    }
	
    // *********************************** interesting methods
    public String toString()
    {
       return myFirstName + " " + myLastName;
    }
}






/////////////////////////////////////////// Student class
class Student
{
    // ************************************ instance fields
    private Name myName;
    private int myGradeLevel;
    private String[] mySchedule;
    private int[][] myGrades;
    
    // ************************************ constructors    
    public Student(Name name, int gradeLevel, String[] schedule, int[][] grades)
    {
        myName = name;
        myGradeLevel = gradeLevel;
        mySchedule = schedule;
        myGrades = grades;
    }
    
    // ************************************ accessor methods    
    public Name getName()
    {
        return myName;
    }
	
    public int getGradeLevel()
    {
        return myGradeLevel;
    }
     
    public String[] getSchedule()
    {
        return mySchedule;
    } 
    
    public int[][] getGrades()
    {
    	return myGrades;
    }
	
	// *********************************** interesting methods
    public String scheduleList()
    {
       String listOfClasses = "";
	   
       for (int i = 0; i < mySchedule.length; i++)
       {
          listOfClasses = listOfClasses + " " + mySchedule[i];
       }
	   
       return listOfClasses;
    }
    
    public String displayGrades()
    {
       String listOfGrades = "";
	   
       for (int course = 0; course < mySchedule.length; course++)
       {
    	  listOfGrades = listOfGrades + mySchedule[course] + " ";
    	  
          for (int semester = 0; semester < myGrades[course].length; semester++)
          {
        	  listOfGrades = listOfGrades + "S" + (semester + 1) + "=" + myGrades[course][semester] + " ";
          }
          
       }
	   
       return listOfGrades;
    }

    /**
    Computes a student's grade point average (gpa).
    precondition: none
    postcondition: Returns the sum of all grade percents in myGrade.
    @return the average of all grade percents in myGrade.
    */ 
    public double computeGPA()
    {
    	double sum = 0;		// sum of all semester grades
    	double average = 0;	// grade point average
    	
    	for (int course = 0; course < myGrades.length; course++)
    	{
    		for (int semester = 0; semester < myGrades[course].length; semester++)
    		{
    			sum += myGrades[course][semester];
    		}
    	}
    	
    	average = sum / (myGrades.length * myGrades[0].length);
    	return average;
    }
	
    public String toString()
    {
       return myName.toString() + " " + myGradeLevel + " " + displayGrades();
    }
    
}