<?php
/**
 * Notifications: User's "Notifications > Read" screen handler.
 *
 * @package BuddyPress
 * @subpackage NotificationsScreens
 * @since 3.0.0
 */

/**
 * Catch and route the 'read' notifications screen.
 *
 * @since 1.9.0
 */
function bp_notifications_screen_read() {

	/**
	 * Fires right before the loading of the notifications read screen template file.
	 *
	 * @since 1.9.0
	 */
	do_action( 'bp_notifications_screen_read' );

	$templates = array(
		/**
		 * Filters the template to load for the notifications read screen.
		 *
		 * @since 1.9.0
		 *
		 * @param string $template Path to the notifications read template to load.
		 */
		apply_filters( 'bp_notifications_template_read', 'members/single/home' ),
		'members/single/index',
	);

	bp_core_load_template( $templates );
}

/**
 * Handle marking single notifications as unread.
 *
 * @since 1.9.0
 */
function bp_notifications_action_mark_unread() {

	// Bail if not the read screen.
	if ( ! bp_is_notifications_component() || ! bp_is_current_action( 'read' ) ) {
		return;
	}

	// Get the action.
	$action = ! empty( $_GET['action']          ) ? $_GET['action']          : '';
	$nonce  = ! empty( $_GET['_wpnonce']        ) ? $_GET['_wpnonce']        : '';
	$id     = ! empty( $_GET['notification_id'] ) ? $_GET['notification_id'] : '';

	// Bail if no action or no ID.
	if ( ( 'unread' !== $action ) || empty( $id ) || empty( $nonce ) ) {
		return;
	}

	// Check the nonce and mark the notification.
	if ( bp_verify_nonce_request( 'bp_notification_mark_unread_' . $id ) && bp_notifications_mark_notification( $id, true ) ) {
		bp_core_add_message( __( 'Notification successfully marked unread.', 'buddypress' ) );
	} else {
		bp_core_add_message( __( 'There was a problem marking that notification.', 'buddypress' ), 'error' );
	}

	// Redirect.
	bp_core_redirect( bp_get_notifications_read_permalink( bp_displayed_user_id() ) );
}
add_action( 'bp_actions', 'bp_notifications_action_mark_unread' );