Skip to content

Commit

Permalink
#26 -php. Extra
Browse files Browse the repository at this point in the history 
Ejercicio extra sin SRP
  • Loading branch information
@miguelex
miguelex committed Jun 26, 2024
1 parent 4f62418 commit 2aeef14
Showing 1 changed file with 254 additions and 1 deletion.
255 changes: 254 additions & 1 deletion Roadmap/26 - SOLID SRP/php/miguelex.php
View file
Original file line number Diff line number Diff line change
Expand Up @@ -78,4 +78,257 @@ public function saveUser(Users $users){

// Extra


class Library {
private $books = [];
private $users = [];
private $loans = [];

public function addBook ($title, $author, $copies){
$this->books[] = ['title' => $title, 'author' => $author, 'copies' => $copies];
}

public function addUser ($name, $id, $email){
$this->users[] = ['name' => $name, 'id' => $id, 'email' => $email];
}

public function loanBook($userId, $bookTitle) {
foreach ($this->books as &$book) {
if ($book['title'] === $bookTitle && $book['copies'] > 0) {
$this->loans[] = [
'userId' => $userId,
'bookTitle' => $bookTitle,
'date' => date('Y-m-d H:i:s')
];
$book['copies']--;
return "El libro ha sido prestado.";
}
}
return "El libro no está disponible.";
}

public function returnBook($userId, $bookTitle) {
foreach ($this->loans as $key => $loan) {
if ($loan['userId'] === $userId && $loan['bookTitle'] === $bookTitle) {
unset($this->loans[$key]);
foreach ($this->books as &$book) {
if ($book['title'] === $bookTitle) {
$book['copies']++;
return "El libro ha sido devuelto.";
}
}
}
}
return "No se encontró el préstamo.";
}

public function getBooks(){
return $this->books;
}

public function getUsers(){
return $this->users;
}

public function getLoans(){
return $this->loans;
}
}

$myLibrary = new Library();

do {
echo "\n\nVamos a mostrar un ejemplo de una clase que no cumple el SRP. En este caso es una clase que gestiona una biblioteca\n\n";
echo "";
echo "1. Añadir libro\n";
echo "2. Añadir usuario\n";
echo "3. Prestar libro\n";
echo "4. Devolver libro\n";
echo "5. Mostrar libros\n";
echo "6. Mostrar usuarios\n";
echo "7. Mostrar préstamos\n";
echo "8. Salir\n";
echo "";
echo "Elija una opción: ";

$option = readline();
echo "";

switch ($option) {
case 1:
echo "Título: ";
$title = readline();
echo "Autor: ";
$author = readline();
echo "Copias: ";
$copies = readline();
$myLibrary->addBook($title, $author, $copies);
break;
case 2:
echo "Nombre: ";
$name = readline();
echo "ID: ";
$id = readline();
echo "Email: ";
$email = readline();
$myLibrary->addUser($name, $id, $email);
break;
case 3:
echo "ID del usuario: ";
$userId = readline();
echo "Título del libro: ";
$bookTitle = readline();
echo $myLibrary->loanBook($userId, $bookTitle) . "\n";
break;
case 4:
echo "ID del usuario: ";
$userId = readline();
echo "Título del libro: ";
$bookTitle = readline();
echo $myLibrary->returnBook($userId, $bookTitle) . "\n";
break;
case 5:
print_r($myLibrary->getBooks());
break;
case 6:
print_r($myLibrary->getUsers());
break;
case 7:
print_r($myLibrary->getLoans());
break;
}

} while (($option != 8));


// Vamos ahora a refactorizar para aplicar el SRP. Ahora tnedremos una clase para los libros, otra para los autores y otra para los prestamos, asi como sus respectivos managers

class Books {
private $title;
private $author;
private $copies;

public function __construct($title, $author, $copies){
$this->title = $title;
$this->author = $author;
$this->copies = $copies;
}

public function getTitle(){
return $this->title;
}

public function getAuthor(){
return $this->author;
}

public function getCopies(){
return $this->copies;
}

public function loanBook(){
$this->copies--;
}

public function returnBook(){
$this->copies++;
}
}

class UsersLibrary {
private $name;
private $id;
private $email;

public function __construct($name, $id, $email){
$this->name = $name;
$this->id = $id;
$this->email = $email;
}

public function getName(){
return $this->name;
}

public function getId(){
return $this->id;
}

public function getEmail(){
return $this->email;
}

}

class Loan {
private $userId;
private $bookTitle;
private $date;

public function __construct($userId, $bookTitle){
$this->userId = $userId;
$this->bookTitle = $bookTitle;
$this->date = date('Y-m-d H:i:s');
}

public function getUserId(){
return $this->userId;
}

public function getBookTitle(){
return $this->bookTitle;
}

public function getDate(){
return $this->date;
}
}

class BookManager {
private $books = [];

public function addBook(Books $book){
$this->books[] = $book;
}

public function getBooks(){
return $this->books;
}
}

class UserManager{
private $users = [];

public function addUser(UsersLibrary $user){
$this->users[] = $user;
}

public function getUsers(){
return $this->users;
}
}

class LoanManager{
private $loans = [];

public function loanBook(UsersLibrary $user, Books $book){
$book->loanBook();
$this->loans[] = new Loan($user->getId(), $book->getTitle());
}

public function returnBook(UsersLibrary $user, Books $book){
$book->returnBook();
foreach ($this->loans as $key => $loan) {
if ($loan->getUserId() === $user->getId() && $loan->getBookTitle() === $book->getTitle()) {
unset($this->loans[$key]);
}
}
}

public function getLoans(){
return $this->loans;
}
}

$myBookManager = new BookManager();
$myUserManager = new UserManager();
$myLoanManager = new LoanManager();

0 comments on commit 2aeef14

Please sign in to comment.