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<?php
defined( 'WPINC' ) OR exit;

/*
  Plugin Name: Document Gallery
  Plugin URI: https://wordpress.org/plugins/document-gallery/
  Description: Display non-images (and images) in gallery format on a page or post with the [dg] shortcode.
  Version: 4.4.4
  Author: Dan Rossiter
  Author URI: http://danrossiter.org/
  License: GPLv3
  Text Domain: document-gallery
 */

define( 'DG_VERSION', '4.4.4' );

if ( version_compare( PHP_VERSION, '5.3', '<' ) ) {
	add_action( 'admin_notices', 'dg_php_lt_three' );
	function dg_php_lt_three() { ?>
		<div class="error"><p>
			<?php printf( __( 'Document Gallery requires PHP &ge; 5.3. Your server is running version %s.', 'document-gallery' ), PHP_VERSION ); ?>
		</p></div>
	<?php }

	return;
}

// define helper paths & URLs
define( 'DG_BASENAME', plugin_basename( __FILE__ ) );
define( 'DG_URL', plugin_dir_url( __FILE__ ) );
define( 'DG_PATH', plugin_dir_path( __FILE__ ) );
define( 'DG_WPINC_PATH', ABSPATH . WPINC . '/' );
define( 'DG_WPADMIN_PATH', ABSPATH . 'wp-admin/' );

// init DG options for use throughout plugin
global $dg_options;
define( 'DG_OPTION_NAME', 'document_gallery' );
$dg_options = get_option( DG_OPTION_NAME, null );

// core functionality
include_once DG_PATH . 'inc/class-document-gallery.php';
include_once DG_PATH . 'inc/class-thumb.php';
include_once DG_PATH . 'inc/class-util.php';

// logging functionality
include_once DG_PATH . 'inc/class-logger.php';
add_action( DG_Logger::PurgeLogsAction, array( 'DG_Logger', 'purgeExpiredEntries' ) );

// handle activation, updates, and uninstallation
include_once DG_PATH . 'inc/class-setup.php';
register_activation_hook( __FILE__, array( 'DG_Setup', 'activate' ) );
add_action( 'wpmu_new_blog', array( 'DG_Setup', 'activateNewBlog' ) );
register_uninstall_hook( __FILE__, array( 'DG_Setup', 'uninstall' ) );
DG_Setup::maybeUpdate();

// ensure we don't allow invalid option structure
add_action( 'init', array( 'DocumentGallery', 'addValidation' ) );

// I18n
add_action( 'plugins_loaded', array( 'DocumentGallery', 'loadTextDomain' ) );

if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
	add_action( ( is_admin() ? 'admin' : 'wp' ) . '_footer', 'dg_debug_data' );
	function dg_debug_data() {
		echo '<!-- ' . PHP_EOL;
		echo 'Document Gallery Count: ' . ( class_exists( 'DG_Gallery' ) ? count( DG_Gallery::getGalleries() ) : 0 ) . PHP_EOL;
		echo ' -->' . PHP_EOL;
	}
}

// cleanup cached data when thumbed attachment deleted
include_once DG_PATH . 'inc/class-thumber.php';
add_action( 'delete_attachment', array( 'DG_Thumb', 'cleanupAttachmentMeta' ) );

if ( is_admin() ) {
	// admin house keeping
	include_once DG_PATH . 'admin/class-admin.php';

	// AJAX handling
	include_once DG_PATH . 'admin/class-ajax-handler.php';

	// add links to plugin index
	add_filter( 'plugin_action_links_' . DG_BASENAME, array( 'DG_Admin', 'addSettingsLink' ) );
	add_filter( 'plugin_row_meta', array( 'DG_Admin', 'addDonateLink' ), 10, 2 );

	// build options page
	add_action( 'admin_menu', array( 'DG_Admin', 'addAdminPage' ) );

	// add meta box for managing thumbnail generation to attachment Edit Media page
	add_action( 'add_meta_boxes', array( 'DG_Admin', 'addMetaBox' ) );
	add_action( 'wp_ajax_dg_upload_thumb', array( 'DG_Admin', 'saveMetaBox' ) );

	if ( DG_Admin::doRegisterSettings() ) {
		add_action( 'admin_init', array( 'DG_Admin', 'registerSettings' ) );
	}
} else {
	// styling for gallery
	if ( apply_filters( 'dg_use_default_gallery_style', true ) ) {
		add_action( 'wp_enqueue_scripts', array( 'DocumentGallery', 'enqueueGalleryStyle' ) );
	}
	add_action( 'wp_print_scripts', array( 'DocumentGallery', 'printCustomStyle' ) );

	add_action( 'wp_enqueue_scripts', array( 'DocumentGallery', 'enqueueGalleryScript' ) );
}

// adds 'dg' shortcode
add_shortcode( 'dg', array( 'DocumentGallery', 'doShortcode' ) );

// public API for developers
include_once DG_PATH . 'inc/class-api.php';