/*Filename: P_Supplemental_11.java
 * Created: November 7, 2012
 * Author: Dustin Hunt
 * Purpose: Create a form using a border layout with a FileChooser and two buttons*/
package p_supplemental_11;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import javax.swing.*;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;

public class P_Supplemental_11 extends JFrame {

    JPanel jpnl1 = new JPanel();
    JPanel southPanel = new JPanel();
    JButton jbtReadFile1 = new JButton("Get Student Names");
    JButton jbtReadFile2 = new JButton("Get Student Grades");
    JTextField jtxtFilePath = new JTextField();
    JLabel jlblDesc = new JLabel("Click a button to open each file!");
    JTextArea jtxtAfileContents = new JTextArea();

    P_Supplemental_11() {
        this.setLayout(new BorderLayout(5, 10));
        jpnl1.setLayout(new GridLayout(2, 2));
        jpnl1.add(jlblDesc);
        //jpnl1.add(jtxtFilePath);
        southPanel.add(jbtReadFile1);
        southPanel.add(jbtReadFile2);
        add(southPanel, BorderLayout.SOUTH);
        add(jpnl1, BorderLayout.NORTH);
        add(jtxtAfileContents, BorderLayout.CENTER);







        jbtReadFile1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {

                jbtReadFileActionPerformed(evt);
            }
        });


        jbtReadFile2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {

                jbtReadFileActionPerformed2(evt);
            }
        });


    } // end constructor

    class Student {

        private int stuId;
        private String stuName;
        private ArrayList<Double> grades;

        Student(int idIn, String nameIn) {

            this.stuId = idIn;
            this.stuName = nameIn;
        } // end student class

        public int getStuId() {
            return stuId;
        }

        public void setStuId(int stuId) {
            this.stuId = stuId;
        }

        String getStuName() {
            return stuName;
        }

        public void setStuName(String stuName) {
            this.stuName = stuName;
        }

        public ArrayList<Double> getGrades() {
            return grades;
        }

        public void setGrades(ArrayList grades) {
            this.grades = grades;
        }
    } // end class Student
    ArrayList<Student> students = new ArrayList();

    private void jbtReadFileActionPerformed(ActionEvent evt) {
        try {
            JFileChooser fileChooser = new JFileChooser();
            if (fileChooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
            java.io.File file = fileChooser.getSelectedFile();

            Scanner input = new Scanner(file);

            StringBuilder output = new StringBuilder();

            while(input.hasNext()) {
            students.add(new Student(input.nextInt(),input.nextLine()));

            } // end while



            jtxtAfileContents.setText(output.toString());
            input.close();

        } // end if
        }// end action method for jbtReadFile button
        catch (FileNotFoundException ex) {
            Logger.getLogger(P_Supplemental_11.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    private void jbtReadFileActionPerformed2(ActionEvent evt) {
        try {
            JFileChooser fileChooser = new JFileChooser();
            if (fileChooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
                java.io.File file = fileChooser.getSelectedFile();

                Scanner input = new Scanner(file);

                while (input.hasNext()) {
                    students.add(new Student(input.nextInt(), input.nextLine()));

                } // end while

            for (int o = 0; o < students.size(); o++) {
                students.get(o).setGrades(collectGrades(students.get(o).getStuId()));

                StringBuilder output = new StringBuilder();
                output.append(students.get(o).getStuId());
                output.append(students.get(o).getStuName());
                output.append(averageGrade(students.get(o).getGrades()));

                jtxtAfileContents.setText(output.toString());

            }
            } // end for
        } // end action method for jbtReadFile button
        catch (FileNotFoundException ex) {
            Logger.getLogger(P_Supplemental_11.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public static ArrayList<Double> collectGrades(int inId) {

        ArrayList<Double> outGrade = new ArrayList();
        try {
            File inFile = new File("c:/temp/studentScores.txt");
            Scanner input = new Scanner(inFile);
            while (input.hasNext()) {
                int tmpInt = input.nextInt();
                double tmpDbl = input.nextDouble();
                if (tmpInt == inId) {
                    outGrade.add(tmpDbl);
                } // end if
            } // end while

        } catch (FileNotFoundException ex) {
            Logger.getLogger(P_Supplemental_11.class.getName()).log(Level.SEVERE, null, ex);
        } // end catch

        return outGrade;
    } // end method

    public static double averageGrade(ArrayList<Double> gradeIn) {
        double outAvg = 0.0;

        for (int y = 0; y < gradeIn.size(); y++) {
            outAvg += gradeIn.get(y);
        } // end for

        return outAvg / gradeIn.size();

    }

    public static void main(String[] args) {
        P_Supplemental_11 frame = new P_Supplemental_11();
        frame.setTitle("P_Supplemenetal_10");
        frame.setSize(410, 520);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);

    } // end main
} // end public class P_Supp_11