/* Tuesday pm lecture - Part 1: Methods for Simple Classes

                           +--------------+
                           | GradeRecord  |
                           +--------------+
                           | int number   |
                           | String title |
                           | int credits  |
                           | double grade |
                           +--------------+

*/

// to represent a grade record on a transcript
class GradeRecord {
  int number;
  String title;
  int credits;
  double grade;

  GradeRecord(int number, String title, int credits, double grade) {
    this.number = number;
    this.title = title;
    this.credits = credits;
    this.grade = grade;
  }

/*  TEMPLATE:
    ... this.number ...                        -- int
    ... this.title ...                         -- String
    ... this.credits ...                       -- int
    ... this.grade ...                         -- double
    ... this.qPoints() ...                     -- double
    ... this.okCourse(double level) ...        -- boolean
    ... this.higherGrade(GradeRecord that) ... -- boolean
*/

  // compute the quality points earned in this course
  double qPoints(){
    return this.grade * this.credits;
  }

   // does this grade record earn quality points above the given level?
   boolean okCourse(double level) {
     return this.qPoints() >= level;
   }

   // is the grade in this grade record higher that in the given record
   boolean higherGrade(GradeRecord that) {
     return this.grade > that.grade;
   }

}

// client class for the GradeRecord class
class ExamplesGradeRecord{
  ExamplesGradeRecord() {}

  // sample grade records
  GradeRecord fund = new GradeRecord(211, "Fundamentals", 4, 3.66);
  GradeRecord ovw = new GradeRecord(220, "Overview", 1, 4.0);
  GradeRecord algo = new GradeRecord(690, "Algorithms", 4, 3.0);

  // test the method qPoints:
  boolean test1 = check this.fund.qPoints() expect 14.64 within 0.01;
  boolean test2 = check this.ovw.qPoints() expect 4.0 within 0.01;
  boolean test3 = check this.algo.qPoints() expect 12.0 within 0.01;

  // test the method okCourse:
   boolean test4 = check this.fund.okCourse(14.0) expect true;
   boolean test5 = check this.algo.okCourse(14.0) expect false;

  // test the method higherThan:
   boolean test6 = check this.fund.higherGrade(this.ovw) expect false;
   boolean test7 = check this.fund.higherGrade(this.algo) expect true;

}