bbp_toggle_reply_handler( string $action = '' )

function bbp_toggle_reply_handler( $action = '' ) {

	// Bail if required GET actions aren't passed
	if ( empty( $_GET['reply_id'] ) )
		return;

	// Setup possible get actions
	$possible_actions = array(
		'bbp_toggle_reply_spam',
		'bbp_toggle_reply_trash'
	);

	// Bail if actions aren't meant for this function
	if ( !in_array( $action, $possible_actions ) )
		return;

	$failure   = '';                         // Empty failure string
	$view_all  = false;                      // Assume not viewing all
	$reply_id  = (int) $_GET['reply_id'];    // What's the reply id?
	$success   = false;                      // Flag
	$post_data = array( 'ID' => $reply_id ); // Prelim array

	// Make sure reply exists
	$reply = bbp_get_reply( $reply_id );
	if ( empty( $reply ) )
		return;

	// What is the user doing here?
	if ( !current_user_can( 'edit_reply', $reply->ID ) || ( 'bbp_toggle_reply_trash' === $action && !current_user_can( 'delete_reply', $reply->ID ) ) ) {
		bbp_add_error( 'bbp_toggle_reply_permission', __( '<strong>ERROR:</strong> You do not have the permission to do that!', 'buddyboss' ) );
		return;
	}

	// What action are we trying to perform?
	switch ( $action ) {

		// Toggle spam
		case 'bbp_toggle_reply_spam' :
			check_ajax_referer( 'spam-reply_' . $reply_id );

			$is_spam  = bbp_is_reply_spam( $reply_id );
			$success  = $is_spam ? bbp_unspam_reply( $reply_id ) : bbp_spam_reply( $reply_id );
			$failure  = $is_spam ? __( '<strong>ERROR</strong>: There was a problem unmarking the reply as spam!', 'buddyboss' ) : __( '<strong>ERROR</strong>: There was a problem marking the reply as spam!', 'buddyboss' );
			$view_all = !$is_spam;

			break;

		// Toggle trash
		case 'bbp_toggle_reply_trash' :

			$sub_action = in_array( $_GET['sub_action'], array( 'trash', 'untrash', 'delete' ) ) ? $_GET['sub_action'] : false;

			if ( empty( $sub_action ) )
				break;

			switch ( $sub_action ) {
				case 'trash':
					check_ajax_referer( 'trash-' . bbp_get_reply_post_type() . '_' . $reply_id );

					$view_all = true;
					$success  = wp_trash_post( $reply_id );
					$failure  = __( '<strong>ERROR</strong>: There was a problem trashing the reply!', 'buddyboss' );

					break;

				case 'untrash':
					check_ajax_referer( 'untrash-' . bbp_get_reply_post_type() . '_' . $reply_id );

					$success = wp_untrash_post( $reply_id );
					$failure = __( '<strong>ERROR</strong>: There was a problem untrashing the reply!', 'buddyboss' );

					break;

				case 'delete':
					check_ajax_referer( 'delete-' . bbp_get_reply_post_type() . '_' . $reply_id );

					$success = wp_delete_post( $reply_id );
					$failure = __( '<strong>ERROR</strong>: There was a problem deleting the reply!', 'buddyboss' );

					break;
			}

			break;
	}

	// Do additional reply toggle actions
	do_action( 'bbp_toggle_reply_handler', $success, $post_data, $action );

	// No errors
	if ( ( false !== $success ) && !is_wp_error( $success ) ) {

		/** Redirect **********************************************************/

		// Redirect to
		$redirect_to = bbp_get_redirect_to();

		// Get the reply URL
		$reply_url = bbp_get_reply_url( $reply_id, $redirect_to );

		// Add view all if needed
		if ( !empty( $view_all ) )
			$reply_url = bbp_add_view_all( $reply_url, true );

		// Redirect back to reply
		wp_safe_redirect( $reply_url );

		// For good measure
		exit();

	// Handle errors
	} else {
		bbp_add_error( 'bbp_toggle_reply', $failure );
	}
}