package pr01;

public class CourseGrades {
	
	private String name;
	private int[] labs;
	private int[] quizzes;
	private int[] midterms;
	private int finalExam;
	
	public CourseGrades(String name, int numLabs, int numQuizzes, int numMidterms) {
		this.name = name;
		if (numLabs < 2)
			numLabs = 2;
		if (numQuizzes < 3)
			numQuizzes = 3;
		if (numMidterms < 1)
			numMidterms = 1;
		labs = new int[numLabs];
		quizzes = new int[numQuizzes];
		midterms = new int[numMidterms];
		for (int i=0;i<labs.length;i++)
			labs[i] = 0;
		for (int i=0;i<quizzes.length;i++)
			quizzes[i] = 0;
		for (int i=0;i<midterms.length;i++)
			midterms[i] = 0;
		finalExam = 0;
	}
	
	public void setLabGrade(int n, int grade) {
		if ( (n < 1) || (n > labs.length))
			return;
		labs[n-1] = grade;
	}
	public void setQuizGrade(int n, int grade) {
		if ( (n < 1) || (n > quizzes.length))
			return;
		quizzes[n-1] = grade;
	}
	public void setMidtermGrade(int n, int grade) {
		if ( (n < 1) || (n > midterms.length))
			return;
		midterms[n-1] = grade;
	}
	
	public void setFinalGrade(int grade) {
		finalExam = grade;
	}
	
	public String getName() {
		return name;
	}
	
	public int getFinalExam() {
		return finalExam;
	}
	
	public String getQuizList() {
		return getGradeString(quizzes);
	}
	
	public String getLabList() {
		return getGradeString(labs);
	}
	
	public String getMidtermList() {
		return getGradeString(midterms);
	}
	
	public double getQuizAverage() {
		return getAverageDropHighestLowest(quizzes);
	}
	
	public double getLabAverage() {
		return getAverageDropLowest(labs);
	}
	
	public double getMidtermAverage() {
		return getAverage(midterms);
	}
	
	public double getCourseAverage() {
		return getLabAverage() + 0.5*getQuizAverage() + 0.40*getMidtermAverage() + .30*finalExam;
	}
	
	public String getCourseGrade() {
		double average;
		average = getCourseAverage();
		if (average >= 95)
			return "A+";
		if (average >= 90)
			return "A";
		if (average >= 80)
			return "B";
		if (average >= 70)
			return "C";
		if (average >= 65)
			return "D";
		return "F";
	}
	
	private String getGradeString(int[] list) {
		String s = "" +list[0];
		for (int i=1;i<list.length;i++)
			s = s + ", " + list[i];
		return s;
	}
	
	private double getAverage(int[] list) {
		double sum = 0;
		for (int i=0;i<list.length;i++)
			sum += list[i];
		return sum/list.length;
	}
	
	private double getAverageDropLowest(int[] list) {
		double sum = 0;
		for (int i=0;i<list.length;i++)
			sum += list[i];
		sum -= getMinValue(list);
		return sum/(list.length-1);
	}
	
	private double getAverageDropHighestLowest(int[] list) {
		double sum = 0;
		for (int i=0;i<list.length;i++)
			sum += list[i];
		sum -= getMinValue(list);
		sum -= getMaxValue(list);
		return sum/(list.length-2);
	}
	
	private int getMinValue(int[] list) {
		int min = list[0];
		for (int i=1;i<list.length;i++)
			if (min > list[i])
				min = list[i];
		return min;
	}
	
	private int getMaxValue(int[] list) {
		int max = list[0];
		for (int i=1;i<list.length;i++)
			if (max < list[i])
				max = list[i];
		return max;
	}
	
	public String toString() {
		return "Student: "+name+" number of grades: "+labs.length+", "+quizzes.length+
	               ", "+midterms.length;
	}


}