/*
 * Steve Eilertsen. Divides players into 2 teams based on their birth month.
 * Odds versus evens. Each team must have 3 boys and 3 girls.
 * Program allocates a name to each team using a random number.
 * The text names are in a separate text file.
 */
// package sixasidebeachtext;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import javax.swing.JOptionPane;

public class SixASideBeachText
{
    public static void main(String[] args)
    {
        String name,genderString;
        char gender = 'z';  // char often demands to be initialised to something
        int month = 0;
        boolean monthOdd = false, monthEven=false;
        int teamEvenBoys = 0, teamEvenGirls = 0;
        int teamOddBoys = 0, teamOddGirls = 0;
        String [] evenTeamArray = new String[6];
        String [] oddTeamArray = new String[6];
        int evenTeamCounter = 0;
        int oddTeamCounter = 0;
        String [] teamName = new String[20];
        
        // Populate the teamName array. 
        // Reads in a text file, one name per line, no delimiter 
        try {
            Scanner scFile = new Scanner(new File("SixASideBeachText.txt"));
            int size = 0;
            while (scFile.hasNext()) {
               String line = scFile.nextLine();                                                
               teamName[size] = line;
               size++;
            }               
        } catch (FileNotFoundException ex) {
            JOptionPane.showMessageDialog(null, "Error! File not found"); 
        }
        
        // for debugging purposes
        for (int i = 0; i < 20; i++)
            System.out.println(teamName[i]);
        
        //INPUT via while loop
        // Loop executes until the teams are full - equal numbers of boys and girls
        while (teamEvenBoys < 3||teamEvenGirls < 3||teamOddBoys < 3||teamOddGirls < 3){

            name = JOptionPane.showInputDialog("Enter your name");
        
            genderString = JOptionPane.showInputDialog("Enter your gender - M/F");
            gender = Character.toUpperCase(genderString.charAt(0));
        
            // PROCESSING. Determin odd or even month of birth. Integer only.
            month = Integer.parseInt(JOptionPane.showInputDialog(
                "Enter birth month as a number" + "\n" +
                "1 - January" + "\n" +
                "2 - February" + "\n" +
                "3 - March" + "\n" +
                "4 - April" + "\n" +        
                "5 - May" + "\n" +
                "6 - June" + "\n" +
                "7 - July" + "\n" +
                "8 - August" + "\n" +
                "9 - September" + "\n" +
                "10 - October" + "\n" +
                "11 - November" + "\n" +
                "12 - December" + "\n"
                ));
        
            // Determines if the month is even or odd using MOD
            // There should be erro checking here, ie smaller than 1 and
            // bigger than 12.
            if (month % 2 == 0){
                monthEven = true;
                monthOdd = false;    
            } else {
                monthEven = false;
                monthOdd = true;    
            }
        
            // Allocates into teams based on gender and month of birth
            // Teams of 6 - 3 boys and 3 girls
            if (monthOdd) {
            if (gender == 'M') {
                if (teamOddBoys < 3 ){
                    oddTeamArray[oddTeamCounter] = name;
                    teamOddBoys++;
                    oddTeamCounter++;   
                }
            }
            else if (gender == 'F') {
                if (teamOddGirls < 3 ){
                    oddTeamArray[oddTeamCounter] = name;
                    teamOddGirls++;
                    oddTeamCounter++;        
                }              
            }
            } // End monthOdd
        
            if (monthEven) {
            if (gender == 'M') {
                if (teamEvenBoys < 3 ){
                    evenTeamArray[evenTeamCounter] = name;
                    teamEvenBoys++;
                    evenTeamCounter++;        
                }
            }
            else if (gender == 'F'){
                if (teamEvenGirls < 3 ){
                    evenTeamArray[evenTeamCounter] = name;
                    teamEvenGirls++;
                    evenTeamCounter++;
                
                }    
            }
        
            } // End monthEven
        
            monthEven = false; // NB. Reset the monthEven flag for re-use in loop
            monthOdd = false;  // NB. Reset the monthOdd flag for re-use in loop
        
        } // end while
    
    // Generate 2 random numbers from 1 to 20 inclusive for teamName
    // Loop does not allow a duplicate name to be chosen
    int myRandom1 = 0, myRandom2 = 0;
    while(myRandom1 == myRandom2){
        myRandom1 = (int)(Math.random() * (20 + 1) + 1);
        myRandom2 = (int)(Math.random() * (20 + 1) + 1);
    }
    
    // OUTPUT The even array team with a name from array
    System.out.println(teamName[myRandom1]);
    System.out.println("---------");
    for (int i = 0; i < 6; i++){
            System.out.print(evenTeamArray[i] + " ");
            
        }
    System.out.println("");
    System.out.println("===================================");
    
    // OUTPUT The odd array team with a name from the array
    System.out.println(teamName[myRandom2]);
    System.out.println("--------");
        for (int i = 0; i < 6; i++){
            System.out.print(oddTeamArray[i] + " ");
            
        }
        
    System.out.println("");
    
}
}