wt_9_advanced-oops

<?php

// Abstract class for Media items
abstract class Media {
    protected $title;
    protected $author;
    const MEDIA_TYPE = 'General';

    // Constructor to initialize title and author
    public function __construct($title, $author) {
        $this->title = $title;
        $this->author = $author;
    }

    // Abstract method to get details of the media
    abstract public function getDetails();

    // Static method to get media type
    public static function getMediaType() {
        return static::MEDIA_TYPE;
    }
}

// Interface for borrowable items
interface Borrowable {
    public function borrow($borrower);
}

// Class for Book, extending Media and implementing Borrowable
class Book extends Media implements Borrowable {
    private $isbn;
    public static $totalBooks = 0;
    const MEDIA_TYPE = 'Book';

    // Constructor to initialize title, author, and ISBN
    public function __construct($title, $author, $isbn) {
        parent::__construct($title, $author);
        $this->isbn = $isbn;
        self::$totalBooks++;
    }

    // Implementation of getDetails method
    public function getDetails() {
        return "Title: {$this->title}, Author: {$this->author}, ISBN: {$this->isbn}, Type: " . self::getMediaType();
    }

    // Implementation of borrow method
    public function borrow($borrower) {
        return "{$borrower} has borrowed the book: {$this->title}";
    }
}

// Class for Magazine, extending Media and implementing Borrowable
class Magazine extends Media implements Borrowable {
    private $issueNumber;
    public static $totalMagazines = 0;
    const MEDIA_TYPE = 'Magazine';

    // Constructor to initialize title, author, and issue number
    public function __construct($title, $author, $issueNumber) {
        parent::__construct($title, $author);
        $this->issueNumber = $issueNumber;
        self::$totalMagazines++;
    }

    // Implementation of getDetails method
    public function getDetails() {
        return "Title: {$this->title}, Author: {$this->author}, Issue: {$this->issueNumber}, Type: " . self::getMediaType();
    }

    // Implementation of borrow method
    public function borrow($borrower) {
        return "{$borrower} has borrowed the magazine: {$this->title}";
    }
}

// Usage example
$libraryItems = [
    new Book("1984", "George Orwell", "123456789"),
    new Magazine("National Geographic", "Various", "2023-09")
];

// Loop through library items and display details
foreach ($libraryItems as $item) {
    echo $item->getDetails() . PHP_EOL;
    echo $item->borrow("John Doe") . PHP_EOL . PHP_EOL; // Added extra newline for separation
}

// Accessing static properties for total counts
echo "Total Books: " . Book::$totalBooks . PHP_EOL;
echo "Total Magazines: " . Magazine::$totalMagazines . PHP_EOL;

?>