<?php

/**

 * Creates and handles all of the functionality needed for the 'Members Settings' page in the WordPress admin.

 *

 * @package Members

 * @subpackage Admin

 */



/* Set up the administration functionality. */

add_action( 'admin_menu', 'members_settings_page_setup' );



/**

 * Initializes and sets up the main plugin settings page.

 *

 * @since 0.2.0

 */

function members_settings_page_setup() {

	global $members;



	/* If no settings are available, add the default settings to the database. */

	if ( false === get_option( 'members_settings' ) )

		add_option( 'members_settings', members_get_default_settings(), '', 'yes' );



	/* Register the plugin settings. */

	add_action( 'admin_init', 'members_register_settings' );



	/* Add Members settings page. */

	$members->settings_page = add_submenu_page( 'options-general.php', esc_attr__( 'Members Settings', 'members' ), esc_attr__( 'Members', 'members' ), apply_filters( 'members_settings_capability', 'manage_options' ), 'members-settings', 'members_settings_page' );



	/* Add media for the settings page. */

	add_action( 'admin_enqueue_scripts', 'members_admin_enqueue_style' );

	add_action( 'admin_enqueue_scripts', 'members_settings_page_media' );

	add_action( "admin_head-{$members->settings_page}", 'members_settings_page_scripts' );



	/* Load the meta boxes. */

	add_action( "load-{$members->settings_page}", 'members_settings_page_load_meta_boxes' );



	/* Create a hook for adding meta boxes. */

	add_action( "load-{$members->settings_page}", 'members_settings_page_add_meta_boxes' );

}



/**

 * Registers the Members plugin settings with WordPress.

 *

 * @since 0.2.0

 */

function members_register_settings() {

	register_setting( 'members_settings', 'members_settings', 'members_validate_settings' );

}



/**

 * Executes the 'add_meta_boxes' action hook because WordPress doesn't fire this on custom admin pages.

 *

 * @since 0.2.0

 */

function members_settings_page_add_meta_boxes() {

	global $members;

	$plugin_data = get_plugin_data( MEMBERS_DIR . 'members.php' );

	do_action( 'add_meta_boxes', $members->settings_page, $plugin_data );

}



/**

 * Loads the plugin settings page meta boxes.

 *

 * @since 0.2.0

 */

function members_settings_page_load_meta_boxes() {

	require_once( MEMBERS_ADMIN . 'meta-box-plugin-settings.php' );

}



/**

 * Function for validating the settings input from the plugin settings page.

 *

 * @since 0.2.0

 */

function members_validate_settings( $input ) {



	/* Check if the role manager is active. */

	$settings['role_manager'] = ( isset( $input['role_manager'] ) ? 1 : 0 );



	/* Check if the content permissions feature is active. */

	$settings['content_permissions'] = ( isset( $input['content_permissions'] ) ? 1 : 0 );



	/* Set the content permissions error text and kill evil scripts. */

	if ( current_user_can( 'unfiltered_html' ) && isset( $input['content_permissions_error'] ) )

		$settings['content_permissions_error'] = stripslashes( wp_filter_post_kses( addslashes( $input['content_permissions_error'] ) ) );



	elseif ( isset( $input['content_permissions_error'] ) )

		$settings['content_permissions_error'] = $input['content_permissions_error'];



	/* Check if the login form and users widgets are active. */

	$settings['login_form_widget'] = ( isset( $input['login_form_widget'] ) ? 1 : 0 );

	$settings['users_widget'] = ( isset( $input['users_widget'] ) ? 1 : 0 );



	/* Check if the private blog and private feed features are active. */

	$settings['private_blog'] = ( isset( $input['private_blog'] ) ? 1 : 0 );

	$settings['private_feed'] = ( isset( $input['private_feed'] ) ? 1 : 0 );



	/* Set the private feed error text and kill evil scripts. */

	if ( current_user_can( 'unfiltered_html' ) && isset( $input['private_feed_error'] ) )

		$settings['private_feed_error'] = stripslashes( wp_filter_post_kses( addslashes( $input['private_feed_error'] ) ) );



	elseif ( isset( $input['private_feed_error'] ) )

		$settings['private_feed_error'] = $input['private_feed_error'];



	/* Return the validated/sanitized settings. */

	return $settings;

}



/**

 * Displays the HTML and meta boxes for the plugin settings page.

 *

 * @since 0.2.0

 */

function members_settings_page() {

	global $members; ?>



	<div class="wrap">



		<?php screen_icon(); ?>



		<h2><?php _e( 'Members Plugin Settings', 'members' ); ?></h2>



		<div id="poststuff">



			<form method="post" action="options.php">



				<?php settings_fields( 'members_settings' ); ?>

				<?php wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false ); ?>

				<?php wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false ); ?>



				<div class="metabox-holder">

					<div class="post-box-container column-1 normal"><?php do_meta_boxes( $members->settings_page, 'normal', null ); ?></div>

					<div class="post-box-container column-2 side"><?php do_meta_boxes( $members->settings_page, 'side', null ); ?></div>

				</div>



				<?php submit_button( esc_attr__( 'Update Settings', 'members' ) ); ?>



			</form>



		</div><!-- #poststuff -->



	</div><!-- .wrap --><?php

}



/**

 * Loads needed JavaScript files for handling the meta boxes on the settings page.

 *

 * @since 0.2.0

 * @param string $hook_suffix The hook for the current page in the admin.

 */

function members_settings_page_media( $hook_suffix ) {

	global $members;



	if ( isset( $members->settings_page ) && $hook_suffix == $members->settings_page ) {

		wp_enqueue_script( 'common' );

		wp_enqueue_script( 'wp-lists' );

		wp_enqueue_script( 'postbox' );

	}

}



/**

 * Loads JavaScript for handling the open/closed state of each meta box.

 *

 * @since 0.2.0

 * @global $members The path of the settings page.

 */

function members_settings_page_scripts() {

	global $members; ?>

	<script type="text/javascript">

		//<![CDATA[

		jQuery(document).ready( function($) {

			$('.if-js-closed').removeClass('if-js-closed').addClass('closed');

			postboxes.add_postbox_toggles( '<?php echo $members->settings_page; ?>' );

		});

		//]]>

	</script>

<?php }



?>