/**
 * This class represents a book. A book has a title, an author and a price
 */
public class Book {
  private String title;
  private Person author;
  private float price;
  private TypeOfBook bookType;

  /**
   * Construct a Book object that has the provided title, author and  price
   *
   * @param title  the title to be given to this book
   * @param author the author to be given to this book
   * @param bookType the type of this book
   * @param price  the price to be assigned to this book
   */

  public Book(String title, Person author, TypeOfBook bookType, float price) {
    this.title = title;
    this.author = author;
    this.price = price;
    this.bookType = bookType;
  }

  public TypeOfBook getBookType() {
    return this.bookType;
  }

  /**
   * Return the title of this book
   *
   * @return the title of this book
   */

  public String getTitle() {
    return this.title;
  }

  /**
   * Return the price of this book
   *
   * @return the price of this book
   */
  public float getPrice() {
    return this.price;
  }

  /**
   * Return the author of this object
   *
   * @return the author of this object as a @link{Person}
   */
  public Person getAuthor() {
    return this.author;
  }

  /**
   * Return a formatted string that contains the information
   * of this object. The string should be in the following format:
   *
   * Title: [title of the book]
   * Author: [first-name last-name]
   * Price: [Price as a decimal number with two numbers after decimal]
   *
   * @return the formatted string as above
   */

  public String toString() {
    String str;

    str = "Title: " + this.title + "\n" +
            "Author: " + this.author + "\n" +
            "Type: ";
    switch (bookType) {
      case PAPERBACK:
        str = str + "Paperback";
        break;
      case HARDCOVER:
        str = str + "Hard Cover";
        break;
      case KINDLE:
        str = str + "Kindle";
        break;
    }

    str = str + "\n";
    str = str + String.format("Price: %.2f", price);

    return str;
  }


  /**
   * Compute and return the price of this book with the given discount (as a
   * percentage)
   *
   * @param discount the percentage discount to be applied
   * @return the discounted price of this book
   * @throws IllegalArgumentException if a negative discount is passed as an
   *                                  argument
   */
  public float salePrice(float discount) throws IllegalArgumentException {
    /* TEMPLATE:
     this.price: float
     this.author: Person
     this.title: String

     Parameters:
     discount: float
     */
    if (discount < 0) {
      throw new IllegalArgumentException("Discount cannot be negative");
    }

    return this.price - (this.price * discount) / 100;
  }

  /**
   * check if this book has the same author as another and return true if so,
   * false otherwise
   *
   * @param other the other book
   * @return true if the two books have the same author, false otherwise
   */
  public boolean sameAuthor(Book other) {

    /* TEMPLATE:
      fields:
      this.title: String
      this.price: float
      this.author: Person

      methods:
      salePrice(float): float

      fields of parameters:
      other.title: String
      other.author: Person
      other.price: float

      methods of parameters:
      other.getTitle(): String
      other.getAuthor(): Person
      other.getPrice(): float
      other.salePrice(float): float
    */

    //get the two authors and delegate
    return this.author.same(other.author);
  }

  /**
   * Compute the sale price of this Book given using the given discount rate (as
   * a percentage) and return a version of this book with the discounted price
   *
   * @param discount the percentage discount to be applied to this book
   * @return the new book that is identical to this book except the price is
   * discounted
   */
  //
  public Book discountBook(float discount) {
  /* TEMPLATE:
  fields:
  this.title: String
  this.author: Person
  this.price: float

  constructor:
  Book(String,Person,float)

  methods:
  this.salePrice(float): float
  */

    float discountedPrice = this.salePrice(discount);
    return new Book(this.title, this.author, this.bookType, discountedPrice);
  }
}