// CSC 240 - Diagnostic Q3 - Design a class (CSC 142 OOP -> the bridge to 240)
// id: 1=Bulbasaur, 2=Ivysaur, 3=Venusaur (start 1); level starts at 1.
// setLevel evolves it; getName returns the name; plus toString, equals, copy.
public class Q3_Bulbasaur {
    private int id = 1;
    private int level = 1;

    public void setLevel(int lv) {
        level = lv;
        if (lv >= 32)      id = 3;   // Venusaur
        else if (lv >= 16) id = 2;   // Ivysaur
        // else stays Bulbasaur (id = 1) - note: does not "de-evolve" below 16
    }

    public int getLevel() { return level; }
    public int getID()    { return id; }

    public String getName() {
        if (id == 3) return "Venusaur";
        if (id == 2) return "Ivysaur";
        return "Bulbasaur";
    }

    // output the object's state
    @Override
    public String toString() {
        return getName() + " (id=" + id + ", level=" + level + ")";
    }

    // two Bulbasaur objects are equal when BOTH id and level match
    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Q3_Bulbasaur)) return false;
        Q3_Bulbasaur other = (Q3_Bulbasaur) o;
        return this.id == other.id && this.level == other.level;
    }

    // clone: a new object with the same state (a "deep" copy of the values)
    public Q3_Bulbasaur copy() {
        Q3_Bulbasaur c = new Q3_Bulbasaur();
        c.id = this.id;
        c.level = this.level;
        return c;
    }

    // ---- demo ----
    public static void main(String[] args) {
        Q3_Bulbasaur b = new Q3_Bulbasaur();
        System.out.println(b);                 // Bulbasaur (id=1, level=1)

        b.setLevel(16);
        System.out.println(b);                 // Ivysaur (id=2, level=16)

        b.setLevel(40);
        System.out.println(b);                 // Venusaur (id=3, level=40)

        Q3_Bulbasaur clone = b.copy();
        System.out.println("equals copy? " + b.equals(clone));   // true

        Q3_Bulbasaur fresh = new Q3_Bulbasaur();
        System.out.println("equals fresh? " + b.equals(fresh));  // false
    }
}