import java.util.Scanner;
/**
 *The App for the Decagonal Prism program.
 * @author Kathleen Tumlin - Fundamentals of Computing I - 1210
 * @version 9/17/21
 */
public class DecagonalPrismApp {

   //fields
   String label = "";
   double edge = 0;
   double height = 0;
   double edgeIn = 0;
   double heightIn = 0;

   // constuctor
  /** Shows public decagonal prism, setLabel, and setEdge.
   * @param labelIn takes input for label in the constructor.
   * @param edgeIn takes input for the edge in the constructor.
   */
   public DecagonalPrismApp(String labelIn, double edgeIn, double heightIn) {
      setLabel(labelIn);
      setEdge(edgeIn);
      setHeight(heightIn);
   }

  //methods
  /** Shows the return for label variable.
   * @return returns the label variable.
   */
   public String getLabel() {
      return label;
   }

  /** Shows the set label.
   * @param labelIn takes the labelIn for the method.
   * @return returns the boolean if the variable was set.
   */
   public boolean setLabel(String labelIn) {
      if (labelIn != null) {
         label = labelIn.trim();
         return true;
      } else {
         return false;
      }
   }

  /** Shows the return for the edge variable.
   * @return returns the value for the variable edge.
   */
   public double getEdge() {
      return edge;
   }

  /** Shows the set edge.
   * @param edgeIn takes the edgein and sets it as the edge variable.
   * @return returns the boolean if the variable was set.
   */
   public boolean setEdge(double edgeIn) {
      if (edgeIn > -1) {
         edge = edgeIn;
         return true;
      }
      else {
         System.out.println("Error: edge must be non-negative.");
         return false;
      }
   }

   /** Shows the return for the height variable.
    *@return returns the value for the variable edge.
    */
   public double getHeight() {
      return height;
   }

  /** Shows the set height.
   * @param heightIn takes the heightin and sets it as the height variable.
   * @return returns the boolean if the variable was set.
   */
   public boolean setHeight(double heightIn) {
      if (heightIn > -1) {
         height = heightIn;
         return true;
      }
      else {
         System.out.println("Error: height must be non-negative.");
         return false;
      }
   }

   public void start() {
      do {
         System.out.print("Error: height must be non-negative." );
      } while (heightIn > -1);

      do {
         System.out.print("Error: edge must be non-negative." );
      } while (edgeIn > -1);
   }
   public static void main(String[] args) {
   /**
    *Shows what prints.
    * @param args not used.
    */
      Scanner scan = new Scanner(System.in);
      System.out.println("Enter label, edge, and height length for a "
         + "decagonal prism.");
      System.out.print("\tlabel: ");
      String label = scan.nextLine();

      System.out.print("\tedge: ");
      double edge = scan.nextDouble();

      System.out.print("\theight: ");
      double height = scan.nextDouble();

   }
}