// Allison Obourn
// CS& 141, Winter 2021
// Lecture 12

// Reads in an input file of lab attendance grades and outputs
// points and grades for the students in each lab section.


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

public class LabAttendance {
	public static void main(String[] args) throws FileNotFoundException {
	
   // Our initial pseudocode:
   
	// for each section
		// read data fom file
		// caculate section number
		// add up points
		// compute grades
		// print results
		
		// Data transformatons: 
		// file line -> points -> grades -> results
		
		Scanner input = new Scanner(new File("sections.txt"));
		int section = 0;
		while(input.hasNextLine()) {
			String line = input.nextLine();
			section++;
			
			int[] points = computePoints(line);
			double[] grades = computeGrades(points);
			results(section, points, grades);
		}
	}
	
	// Compute the grades for each student based on their 
	// points as a percentage out of 20.
	public static double[] computeGrades(int[] points) {
		double[] grades = new double[5];
		for(int i = 0; i < points.length; i++) {
			grades[i] = 100.0 * points[i] / 20;
		}
		return grades;
	}
	
	// Computes the points for each student in a line.
	public static int[] computePoints(String line) {
		int[] points = new int[5];
			
		for(int i = 0; i < line.length(); i++) {
			char c = line.charAt(i);
			int earned = 0;
			if(c == 'y') { 
				earned = 3;
			} else if (c == 'n') {
				earned = 1;
			}
			int student = i % 5;
			points[student] = Math.min(points[student] + earned, 20); 
		}			
		return points;
	}
	
	// Prints the results of a given section
	public static void results(int section, int[] points, double[] grades) {
		System.out.println("Section " + section);
		System.out.println("Points: " + Arrays.toString(points));
		System.out.println("Grades: " + Arrays.toString(grades));
		System.out.println();
	}

}