/**
 * @(#)markmanager.java
 *
 *
 * @author  mike C
 * @version 1.00 2007/2/26
 */
 
import java.io.*;
import java.util.Arrays;
import java.util.ArrayList;

public class marksManager {
static int selectedMode=0;
static ArrayList<student> studentTracker = new ArrayList<student>();

/* selectedMode Mode Reference-
0.On Main Menu
1.Create New Student
2.Edit Student information
3.Overview
4.Exit Program :(
*/
	
private static void mainMenu () {	
	System.out.println("\n Manage Marks and Stuff- \n 1.New Student \n 2.Edit Student \n 3.Overview \n 4.Exit Program");
}

public static void newStudent () throws IOException {
	String nameFirst, nameLast;
	int numberStudent=0;
	boolean satisfaction=false;
	boolean bit8Correction=false;
	String temp2="";
	student tempReader;


	BufferedReader getIN = new BufferedReader (new InputStreamReader (System.in));
	while (satisfaction == false){
		for (int i1=0;;i1++){//Input student information.	
			System.out.println("Please enter the student's last name.");
			nameLast = getIN.readLine();
			System.out.println("Please enter the student's first name.");
			nameFirst = getIN.readLine();
			while (bit8Correction==false){
				// Loop to make sure that number entered is 8 digits.
				System.out.println("Please enter the student's number.");
				temp2 = getIN.readLine();				
				numberStudent =Integer.parseInt(temp2);				
				if (temp2.length()==8){
					bit8Correction=true;
				}				
			}//Check if the data is correct.
			System.out.println("Student Information is as follows: "+nameLast+", "+nameFirst+"\n Number: "+numberStudent);
			System.out.println("Is this correct?");
			temp2 = getIN.readLine();
			
			if (temp2.indexOf("y")>=0 || temp2.indexOf("Y")>=0){
				// If satisfied with input create a new student (create a temp array, then make the main equal to the temp)
				satisfaction = true;				
					studentTracker.add(studentTracker.size(),new student(nameLast,nameFirst,numberStudent));
			break;
			}	
		}			
	}
	System.out.println("Back to Main Menu."); 
}

public static void editStudent () throws IOException {
	// Show class then take either a name or a student number
	selectedMode=choice(selectedMode, studentTracker.size());

}

public static void overView () throws IOException {
	// Show Individual Marks, or Show Class Marks
	System.out.println("There are currently "+studentTracker.size()+" students being accounted for.");
	for (int i=0; studentTracker.size() >i ; i++){
		studentTracker.get(i).displayInfo();	
	}	
}

public static void deleteStudent () throws IOException {
	
}

public static int choice (int currentSel, int upperBounds) throws IOException  {
BufferedReader getIN = new BufferedReader (new InputStreamReader (System.in));
	for (int inf=0;;inf++){ 
		for (int inf2=0;;inf2++){ 	
		String temp = getIN.readLine();
		int i = Integer.parseInt(temp);
			if (i <= upperBounds & i >= 1){
				System.out.println("Acceptable");
				return i;
			}else{
				System.out.println("Sorry, that's not a valid option.");
				break;			
			}
		}
	}	
}

public static void main(String[] args) throws IOException { 
   	
    	boolean letMeOut = false;

    	while (letMeOut == false){    	    	  	   	
    		mainMenu(); 
    		selectedMode=choice(selectedMode, 4);    		
    		switch(selectedMode){
				case(1):
					newStudent ();
					break;			
				case(2):
					System.out.println("There are "+studentTracker.size()+" unique students, being tracked."); 
					editStudent();
					break;
				case(3):
					overView();
					break;
				case(4):
					letMeOut=true;	
				default:					
				//mainMenu(); 
				System.out.println("Thanks for using this useless program, all your hard work in data input is now being deleted. \n Have a nice day. :)");
    		}
    	}    	
    }
    
    
}