package uk.ac.standrews.cs.cs2001.practical03.adl37.test;

import static org.junit.Assert.assertEquals;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

import org.junit.Before;
import org.junit.Test;

import uk.ac.standrews.cs.cs2001.practical03.common.AbstractTest;
import uk.ac.standrews.cs.cs2001.practical03.common.NoCopiesException;
import uk.ac.standrews.cs.cs2001.practical03.common.NotBorrowedException;
import uk.ac.standrews.cs.cs2001.practical03.interfaces.IBook;
import uk.ac.standrews.cs.cs2001.practical03.interfaces.ILibrary;

public class Tests extends AbstractTest {

    IBook book;
    IBook book1;
    IBook book2;
    DateFormat formatter;
    ILibrary library;

    //makes books and library using factory class
    @Before
    public void make() throws ParseException{
        formatter = new SimpleDateFormat("dd-MMM-yy");
        book = getFactory().makeBook("Algorithms + Data Structures = Programs", "Niklaus Wirth", "0-13-022418-9", formatter.parse("01-January-98"));
        book1 = getFactory().makeBook("a", "pingu", "012", formatter.parse("06-March-77"));
        book2 = getFactory().makeBook("b", "mr man", "045", formatter.parse("16-June-09"));
        library = getFactory().makeLibrary();

    }
    //checks author
    @Test
    public void checkAuth(){
        assertEquals("Niklaus Wirth", book.getAuthor());
    }

    //checks title
    @Test
    public void checkTitle(){
        assertEquals("Algorithms + Data Structures = Programs", book.getTitle());
    }

    //checks isbn
    @Test
    public void checkISBN() {
        assertEquals("0-13-022418-9", book.getISBN());
    }

    //checks publication date
    @Test
    public void checkDate() throws ParseException{
        assertEquals(formatter.parse("01-January-98"), book.getPublicatiorDate());
    }

    //adds books to the library
    @Test
    public void checkAdd() {

        library.addCopy(book);
        library.addCopy(book1);
        library.addCopy(book2);
        library.addCopy(book2);
        //check number of books in lib
        assertEquals(library.getNumberofBooks(), 4);

    }

    //checks no. of available books
    @Test
    public void checkAvail() throws ParseException, NoCopiesException{

        library.borrowCopy(book, formatter.parse("01-January-98"));
        library.borrowCopy(book2, formatter.parse("01-January-98"));
        assertEquals(library.getNumberAvailable(book2), 0);

    }

    //checks borrow method, and books number of borrowings
    @Test
    public void checkBorrow() throws NoCopiesException, ParseException{
        library.borrowCopy(book, formatter.parse("01-January-98"));
        library.borrowCopy(book2, formatter.parse("01-January-98"));
        assertEquals(library.getNumberOfBorrowings(book2), 2);
    }

    //checks how many copies of all books
    @Test
    public void checkCopies(){
        assertEquals(library.getNumberOfCopies(), 0);
    }

    //checks how many copies of certain book
    @Test
    public void checkBookCopies(){
        assertEquals(library.getNumberOfCopies(book2), 0);
    }

    //this doesnt work?
//  @Test
//  public void mostPop(){
//      assertEquals(library.getMostPopular(), book2);
//
//  }


}