package CollectionEx;

// representing a class at HCC
// Comparable is a generic interface, you have to say what you can be compared to
public class HCCClass implements Comparable<HCCClass> {

    private String program; // which program e.g. CIS, ACCT, ENG
    private int coursenum; // the course number e.g. 102, 214
    private String title; // the title e.g. Intro to Information Systems, Programming II: Java
    private String description; // the obligatory course description
    private int credits; // how many credits it is worth

	// constructors
    public HCCClass() {
        program = "XXX";
        coursenum = 0;
        title = "Course Name";
        description = "Course Description";
        credits = 0;
    }

    public HCCClass(String program, int coursenum, String title, int credits) {
        this();
        setProgram(program);
        setCoursenum(coursenum);
        setTitle(title);
        setCredits(credits);
    }

	// accessors and mutators
    public String getProgram() {
        return program;
    }

    public void setProgram(String program) {
        this.program = program;
    }

    public int getCoursenum() {
        return coursenum;
    }

    public void setCoursenum(int coursenum) {
        this.coursenum = coursenum;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public int getCredits() {
        return credits;
    }

    public void setCredits(int creditsval) {
        if (creditsval > 0) {
            this.credits = creditsval;
        }
    }

	// utilities
    public String toString() {
	// use format from String to add leading zeroes for 3-digit class number
        // just to be fiddly
        String num = String.format("%03d", getCoursenum());
        return getProgram() + " " + num + ": " + getTitle() + " (" + getCredits() + ")";
    }

	// for Comparable<HCCClass>
    // return positive number if this is bigger
    // return 0 if they are equal
    // return negative number if other is bigger
    public int compareTo(HCCClass other) {
        // bigger than any null class
        if (other == null) {
            return 1;
        }

        // compare program names based on String alphabetical using compareTo from String
        int programDiff = getProgram().compareTo(other.getProgram());

        // if different programs, use alphabetical comparison as result
        if (programDiff != 0) {
            return programDiff;
        }

        //if programs same compare by course number -- based on size of int
        return getCoursenum() - other.getCoursenum();
    }
}