felixarntz/attachment-taxonomies-feature

<?php
/*
Plugin Name: Attachment Taxonomies (Feature Plugin)
Plugin URI:  https://github.com/felixarntz/attachment-taxonomies-feature
Description: Feature plugin to improve attachment taxonomy support in WordPress.
Version:     1.0.0
Author:      The WordPress Team
Author URI:  https://wordpress.org
License:     GNU General Public License v3
License URI: http://www.gnu.org/licenses/gpl-3.0.html
Tags:        feature, attachment, media, taxonomy, categories, tags
*/
/**
 * @package AttachmentTaxonomiesFeature
 */

/**
 * Initializes the plugin functionality.
 */
function atf_init() {
    // Bail if the original plugin is active to prevent conflicts.
    if ( class_exists( 'Attachment_Taxonomies' ) ) {
        add_action( 'admin_notices', 'atf_conflict_notice' );
        return;
    }

    define( 'ATF_ABSPATH', plugin_dir_path( __FILE__ ) . 'src/' );
    define( 'ATF_URL', plugin_dir_url( __FILE__ ) . 'src/' );

    require_once ATF_ABSPATH . WPINC . '/default-filters.php';
    require_once ATF_ABSPATH . WPINC . '/post.php';
    require_once ATF_ABSPATH . WPINC . '/script-loader.php';
    require_once ATF_ABSPATH . WPINC . '/taxonomy.php';
    require_once ATF_ABSPATH . WPINC . '/media.php';

    if ( is_admin() ) {
        require_once ATF_ABSPATH . 'wp-admin/includes/class-wp-media-list-table.php';
        require_once ATF_ABSPATH . 'wp-admin/includes/media.php';
    }
}

/**
 * Renders an admin notice when the WordPress version is not supported.
 */
function atf_requirements_notice() {
    $plugin_file = plugin_basename( __FILE__ );

    ?>
    <div class="notice notice-warning is-dismissible">
        <p>
            <?php printf(
                __( 'Please note: The Attachment Taxonomies feature plugin requires WordPress 4.6 or higher. <a href="%s">Deactivate plugin</a>.' ),
                wp_nonce_url(
                    add_query_arg(
                        array(
                            'action'        => 'deactivate',
                            'plugin'        => $plugin_file,
                            'plugin_status' => 'all',
                        ),
                        admin_url( 'plugins.php' )
                    ),
                    'deactivate-plugin_' . $plugin_file
                )
            ); ?>
        </p>
    </div>
    <?php
}

/**
 * Renders an admin notice when the original plugin is active.
 */
function atf_conflict_notice() {
    $plugin_file = plugin_basename( __FILE__ );

    ?>
    <div class="notice notice-warning is-dismissible">
        <p>
            <?php printf(
                __( 'Please note: The Attachment Taxonomies feature plugin is not compatible with the original plugin. <a href="%s">Deactivate plugin</a>.' ),
                wp_nonce_url(
                    add_query_arg(
                        array(
                            'action'        => 'deactivate',
                            'plugin'        => $plugin_file,
                            'plugin_status' => 'all',
                        ),
                        admin_url( 'plugins.php' )
                    ),
                    'deactivate-plugin_' . $plugin_file
                )
            ); ?>
        </p>
    </div>
    <?php
}

if ( version_compare( $GLOBALS['wp_version'], '4.6', '<' ) ) {
    add_action( 'admin_notices', 'atf_requirements_notice' );
} else {
    add_action( 'plugins_loaded', 'atf_init' );
}