// Zorah Fung, CSE 142
// This program takes in a file of section attendance scores and reports grades
// for each student in each section.
// In the data file:
//   -'y' represents 5 points (student went to section and turned in HW)
//   -'n' represents 2 point (student went to section but didn't turn in HW)
//   -'a' represents 0 points (student was absent)
// Each student can get up to 30 section points. 
//
// Note: This program is not yet finished. Will be completed on Wednesday, August 6

import java.util.*;
import java.io.*;

public class Section {
   
   public static void main(String[] args) throws FileNotFoundException {
      Scanner fileScan = new Scanner(new File("sections.txt"));
      
      while (fileScan.hasNextLine()) {
         String line = fileScan.nextLine();
         int[] studentPoints = calculateStudentPoints(line);
         System.out.println("Student points: " + Arrays.toString(studentPoints));
      }
   }
   
   // Reads in a line representing attendance for a particular section and returns
   // an array representing the total number of points received by each student in the class
   // Note: We've pulled out this code into a method, because it performs a single
   // data transformation, converting a String of attendance for students to an array of counts
   public static int[] calculateStudentPoints(String line) {
      int[] studentPoints = new int[5];
      for (int i = 0; i < line.length(); i++) {
         char attendance = line.charAt(i);
         int studentIndex = i % 5;
         if (attendance == 'y'){
            studentPoints[studentIndex] += 5;
         } else if (attendance == 'n') {
            studentPoints[studentIndex] += 2;
         } /*else {
            studentPoints[studentIndex] += 0;
         }*/
         studentPoints[studentIndex] = Math.min(30, studentPoints[studentIndex]);
      }
      return studentPoints;
   }
}