電子書籍を自動生成するWordPressプラグインの開発方法

<?php
/*
Plugin Name: Ebook Generator
Plugin URI: https://your-website.com/ebook-generator
Description: This plugin generates ebooks automatically from WordPress posts.
Version: 1.0
Author: Your Name
Author URI: https://your-website.com
*/

// Include plugin functions
require_once plugin_dir_path( __FILE__ ) . 'includes/functions.php';
?>

<?php
function generate_ebook() {
    // Get all published posts
    $args = array(
        'post_type' => 'post',
        'post_status' => 'publish',
        'posts_per_page' => -1
    );
    $posts = get_posts( $args );

    // Generate ebook contents
    $ebook_content = '';
    foreach ( $posts as $post ) {
        $ebook_content .= '<h2>' . $post->post_title . '</h2>';
        $ebook_content .= '<p>' . $post->post_content . '</p>';
    }

    // Generate ebook file
    $ebook_file = plugin_dir_path( __FILE__ ) . 'ebook.html';
    file_put_contents( $ebook_file, $ebook_content );
}
?>

<?php
function ebook_generator_menu() {
    add_posts_page( 'Generate Ebook', 'Generate Ebook', 'manage_options', 'generate-ebook', 'generate_ebook_page' );
}

function generate_ebook_page() {
    if ( isset( $_POST['generate_ebook'] ) ) {
        generate_ebook();
        echo '<div class="notice notice-success"><p>Ebook generated successfully!</p></div>';
    }
    ?>
    <div class="wrap">
        <h1>Generate Ebook</h1>

        <form method="post" action="">
            <?php wp_nonce_field( 'generate_ebook' ); ?>
            <input type="submit" name="generate_ebook" class="button button-primary" value="Generate">
        </form>
    </div>
    <?php
}

add_action( 'admin_menu', 'ebook_generator_menu' );
?>

<?php
function ebook_generator_enqueue_scripts() {
    wp_enqueue_style( 'ebook-generator-style', plugin_dir_url( __FILE__ ) . 'assets/style.css' );
    wp_enqueue_script( 'ebook-generator-script', plugin_dir_url( __FILE__ ) . 'assets/script.js', array( 'jquery' ), '1.0', true );
}

add_action( 'admin_enqueue_scripts', 'ebook_generator_enqueue_scripts' );
?>