package pl.kimes.core;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Library {

    private int uniqueID;
    private Map<Integer, Book> bookMap = new HashMap<>();
    private Map<Book, Integer> copiesMap = new HashMap<>();
    private Map<Book, List<String>> borrowersMap = new HashMap<>();

    public void addBook(Book newAddbook) {
        Integer id = ++uniqueID;
        for (Book book : bookMap.values()) {
            if (book.equals(newAddbook)) {
                int numberOfCopies = getNumberOfCopies(newAddbook);
                newAddbook.setId(id);
                numberOfCopies++;
                bookMap.put(id, newAddbook);
                copiesMap.put(newAddbook, numberOfCopies);
                return;
            }
        }
        int numberOfCopies = 1;
        newAddbook.setId(id);
        bookMap.put(id, newAddbook);
        copiesMap.put(newAddbook, numberOfCopies);
    }

    public int getNumberOfCopies(Book book){
        return copiesMap.get(book);

    }


    public void getInfoByID(Integer bookID) {
        Book book = bookMap.get(bookID);
        if (book != null) {
            book.print();

        }
    }

    public void lendBook(Integer bookID, String borrowersName) {
        Book bookStatus = bookMap.get(bookID);


    }

    public void returnBook(Integer bookID, String returnersName) {
        Book bookStatus = bookMap.get(bookID);

    }

    public void removeBook(Integer bookID) {
        Book value = bookMap.get(bookID);
        if (value != null) {
            if (value.getEnumBookStatus().equals(BookStatus.AVAILABLE)) {
                bookMap.remove(bookID);
            } else {
                System.out.println("Can't remove that book right now, it's lent by " + value.getBorrowersName());
            }
        } else {
            System.out.println("Invalid ID number");

        }

    }

    public void getAllBooks() {
        for (Book book : bookMap.values()) {
            book.print();
            System.out.println("Number of copies: " + getNumberOfCopies(book));

        }
    }

    public void getAllByTitle(String title) {
        for (Book book : bookMap.values()) {
            if (title.equals(book.getTitle())) {
                book.print();
            }
        }

    }

    public void getAllByAuthor(String author) {
        for (Book book : bookMap.values()) {
            if (author.equals(book.getAuthor())) {
                book.print();
            }
        }
    }

    public void getAllByYear(String year) {
        for (Book book : bookMap.values()) {
            if (year.equals(book.getYear())) {
                book.print();
            }
        }
    }

    public void getAllByAuthorAndYear(String author, String year) {
        for (Book book : bookMap.values()) {
            if (author.equals(book.getAuthor()) && (year.equals(book.getYear()))) {
                book.print();
            }
        }
    }

    public Library() {

    }

}
package pl.kimes.core;


public class Book {

    private int id;
    private String title;
    private String year;
    private String author;
    private BookStatus bookStatus = BookStatus.AVAILABLE;

    public Book(String title, String year, String author) {
        this.title = title;
        this.year = year;
        this.author = author;
    }

    public String getTitle() {
        return title;
    }

    public String getYear() {
        return year;
    }

    public String getAuthor() {
        return author;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public void setBookStatusToNonAvailable() {
            bookStatus = BookStatus.NON_AVAILABLE;
    }

    public void setBookStatusToAvailable() {
            bookStatus = BookStatus.AVAILABLE;
    }

    public String getBookStatus() {
        return bookStatus.toString();
    }

    public BookStatus getEnumBookStatus() {
        return bookStatus;
    }

    public void print() {
        System.out.println("-----");
        System.out.println("ID number: " + this.getId());
        System.out.println("Title: " + this.getTitle());
        System.out.println("Year: " + this.getYear());
        System.out.println("Author: " + this.getAuthor());
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((author == null) ? 0 : author.hashCode());
        result = prime * result + ((title == null) ? 0 : title.hashCode());
        result = prime * result + ((year == null) ? 0 : year.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Book other = (Book) obj;
        if (author == null) {
            if (other.author != null)
                return false;
        } else if (!author.equals(other.author))
            return false;
        if (title == null) {
            if (other.title != null)
                return false;
        } else if (!title.equals(other.title))
            return false;
        if (year == null) {
            if (other.year != null)
                return false;
        } else if (!year.equals(other.year))
            return false;
        return true;
    }

//  @Override
//  public boolean equals(Object arg0) {
//      if (Book.class.isInstance(arg0)) {
//
//      return this.author.equals(((Book) arg0).author) &&
//              this.year.equals(((Book) arg0).year) &&
//              this.title.equals(((Book) arg0).title);
//      }
//      return false;
//  }


}