feat: adds Jada's created structure for Library Management System (#244)

* feat: Created structure for Library Management System

* feat: Q

* feat: quiz completed

* Revert "feat: quiz completed"

This reverts commit 5dae095.

* fix: mistakes

* Update Jadaslibrary.java

* chore: deletes early quiz.

* chore: moving files to correct package

Signed-off-by: Anthony D. Mays <[email protected]>

* chore: moving test file

Signed-off-by: Anthony D. Mays <[email protected]>

* fix: library test and impl

Signed-off-by: Anthony D. Mays <[email protected]>

---------

Signed-off-by: Anthony D. Mays <[email protected]>
Co-authored-by: Anthony D. Mays <[email protected]>
Co-authored-by: Anthony D. Mays <[email protected]>

Author: Nelshulla

lesson_09/oop/oop_app/src/main/java/com/codedifferently/lesson9/JadasLibrary/Book.java

@@ -0,0 +1,59 @@
+package com.codedifferently.lesson9.JadasLibrary;
+
+public class Book {
+  private String title;
+  private String isbn;
+  private String author;
+  private int numberOfPages;
+  private boolean checkedOut;
+
+  // Constructor
+  public Book(String title, String isbn, String author, int numberOfPages) {
+    this.title = title;
+    this.isbn = isbn;
+    this.author = author;
+    this.numberOfPages = numberOfPages;
+    this.checkedOut = false;
+  }
+
+  // Getters and setters
+  public String getTitle() {
+    return title;
+  }
+
+  public void setTitle(String title) {
+    this.title = title;
+  }
+
+  public String getIsbn() {
+    return isbn;
+  }
+
+  public void setIsbn(String isbn) {
+    this.isbn = isbn;
+  }
+
+  public String getAuthor() {
+    return author;
+  }
+
+  public void setAuthor(String author) {
+    this.author = author;
+  }
+
+  public int getNumberOfPages() {
+    return numberOfPages;
+  }
+
+  public void setNumberOfPages(int numberOfPages) {
+    this.numberOfPages = numberOfPages;
+  }
+
+  public boolean isCheckedOut() {
+    return checkedOut;
+  }
+
+  public void setCheckedOut(boolean checkedOut) {
+    this.checkedOut = checkedOut;
+  }
+}

lesson_09/oop/oop_app/src/main/java/com/codedifferently/lesson9/JadasLibrary/Jadaslibrary.java

@@ -0,0 +1,48 @@
+package com.codedifferently.lesson9.JadasLibrary;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Jadaslibrary {
+  private List<Book> books;
+  private List<Patron> patrons;
+
+  public Jadaslibrary() {
+    this.books = new ArrayList<>();
+    this.patrons = new ArrayList<>();
+  }
+
+  public void addBook(Book book) {
+    books.add(book);
+  }
+
+  public void removeBook(Book book) {
+    books.remove(book);
+  }
+
+  public void registerPatron(Patron patron) {
+    patrons.add(patron);
+  }
+
+  public void checkOutBook(Book book, Patron patron) {
+    if (books.contains(book) && !book.isCheckedOut()) {
+      book.setCheckedOut(true);
+      patron.getCheckedOutBooks().add(book);
+    }
+  }
+
+  public void returnBook(Book book, Patron patron) {
+    if (patron.getCheckedOutBooks().contains(book)) {
+      book.setCheckedOut(false);
+      patron.getCheckedOutBooks().remove(book);
+    }
+  }
+
+  public List<Book> getBooks() {
+    return new ArrayList<>(books);
+  }
+
+  public List<Patron> getPatrons() {
+    return new ArrayList<>(patrons);
+  }
+}

lesson_09/oop/oop_app/src/main/java/com/codedifferently/lesson9/JadasLibrary/Patron.java

@@ -0,0 +1,14 @@
+package com.codedifferently.lesson9.JadasLibrary;
+
+import java.util.List;
+
+public interface Patron {
+
+  void checkOutBook(Book book);
+
+  void returnBook(Book book);
+
+  List<Book> getCheckedOutBooks();
+
+  String getName();
+}

lesson_09/oop/oop_app/src/main/java/com/codedifferently/lesson9/JadasLibrary/PatronImpl.java

@@ -0,0 +1,34 @@
+package com.codedifferently.lesson9.JadasLibrary;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PatronImpl implements Patron {
+  private String name;
+  private List<Book> checkedOutBooks;
+
+  public PatronImpl(String name) {
+    this.name = name;
+    this.checkedOutBooks = new ArrayList<>();
+  }
+
+  @Override
+  public void checkOutBook(Book book) {
+    checkedOutBooks.add(book);
+  }
+
+  @Override
+  public void returnBook(Book book) {
+    checkedOutBooks.remove(book);
+  }
+
+  @Override
+  public List<Book> getCheckedOutBooks() {
+    return checkedOutBooks;
+  }
+
+  @Override
+  public String getName() {
+    return name;
+  }
+}

lesson_09/oop/oop_app/src/test/java/com/codedifferently/lesson9/JadasLibrary/JadaslibraryTest.java

@@ -0,0 +1,59 @@
+package com.codedifferently.lesson9.JadasLibrary;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Test;
+
+public class JadaslibraryTest {
+
+  @Test
+  public void testAddBookToLibrary() {
+    Jadaslibrary library = new Jadaslibrary();
+    Book book = new Book("The Bluest Eye", "978-0140088298", "Toni Morrison", 226);
+    library.addBook(book);
+    assertTrue(library.getBooks().contains(book));
+  }
+
+  @Test
+  public void testRemoveBookFromLibrary() {
+    Jadaslibrary library = new Jadaslibrary();
+    Book book = new Book("Sula", "978-0452260108", "Toni Morrison", 193);
+    library.addBook(book);
+    library.removeBook(book);
+    assertFalse(library.getBooks().contains(book));
+  }
+
+  @Test
+  public void testRegisterPatron() {
+    Jadaslibrary library = new Jadaslibrary();
+    Patron patron = new PatronImpl("Stacy Law");
+    library.registerPatron(patron);
+    assertTrue(library.getPatrons().contains(patron));
+  }
+
+  @Test
+  public void testCheckOutBook() {
+    Jadaslibrary library = new Jadaslibrary();
+    Book book = new Book("Liden Hills", "978-3293006853", "Gloria Naylor", 320);
+    Patron patron = new PatronImpl("Clay Brown");
+    library.addBook(book);
+    library.registerPatron(patron);
+    library.checkOutBook(book, patron);
+    assertTrue(patron.getCheckedOutBooks().contains(book));
+    assertTrue(book.isCheckedOut());
+  }
+
+  @Test
+  public void testReturnBook() {
+    Jadaslibrary library = new Jadaslibrary();
+    Book book = new Book("Nobody Knows My Name", "978-0679744733", "James Baldwin", 256);
+    Patron patron = new PatronImpl("Bob Willson");
+    library.addBook(book);
+    library.registerPatron(patron);
+    library.checkOutBook(book, patron);
+    library.returnBook(book, patron);
+    assertFalse(patron.getCheckedOutBooks().contains(book));
+    assertFalse(book.isCheckedOut());
+  }
+}