core/Zotlabs/Module/Layouts.php

<?php
namespace Zotlabs\Module;

require_once('include/identity.php');
require_once('include/conversation.php');
require_once('include/acl_selectors.php');

class Layouts extends \Zotlabs\Web\Controller {

	function init() {

		if(argc() > 1 && argv(1) === 'sys' && is_site_admin()) {
			$sys = get_sys_channel();
			if($sys && intval($sys['channel_id'])) {
				\App::$is_sys = true;
			}
		}

		if(argc() > 1)
			$which = argv(1);
		else
			return;

		profile_load($a,$which);

	}

	function get() {

		if(! \App::$profile) {
			notice( t('Requested profile is not available.') . EOL );
			\App::$error = 404;
			return;
		}

		$which = argv(1);

		$_SESSION['return_url'] = \App::$query_string;

		$uid = local_channel();
		$owner = 0;
		$channel = null;
		$observer = \App::get_observer();

		$channel = \App::get_channel();

		if(\App::$is_sys && is_site_admin()) {
			$sys = get_sys_channel();
			if($sys && intval($sys['channel_id'])) {
				$uid = $owner = intval($sys['channel_id']);
				$channel = $sys;
				$observer = $sys;
			}
		}

		if(! $owner) {
			// Figure out who the page owner is.
			$r = q("select channel_id from channel where channel_address = '%s'",
				dbesc($which)
			);
			if($r) {
				$owner = intval($r[0]['channel_id']);
			}
		}

		$ob_hash = (($observer) ? $observer['xchan_hash'] : '');

		$perms = get_all_perms($owner,$ob_hash);

		if(! $perms['write_pages']) {
			notice( t('Permission denied.') . EOL);
			return;
		}

		// Block design features from visitors 

		if((! $uid) || ($uid != $owner)) {
			notice( t('Permission denied.') . EOL);
			return;
		}

		// Get the observer, check their permissions

		$ob_hash = (($observer) ? $observer['xchan_hash'] : '');

		$perms = get_all_perms($owner,$ob_hash);

		if(! $perms['write_pages']) {
			notice( t('Permission denied.') . EOL);
			return;
		}

		//This feature is not exposed in redbasic ui since it is not clear why one would want to
		//download a json encoded pdl file - we dont have a possibility to import it.
		//Use the buildin share/install feature instead.
		if((argc() > 3) && (argv(2) === 'share') && (argv(3))) {
			$r = q("select sid, service, mimetype, title, body  from item_id 
				left join item on item.id = item_id.iid 
				where item_id.uid = %d and item.mid = '%s' and service = 'PDL' order by sid asc",
				intval($owner),
				dbesc(argv(3))
			);
			if($r) {
				header('Content-type: application/x-hubzilla-layout');
				header('Content-disposition: attachment; filename="' . $r[0]['sid'] . '.pdl"');
				echo json_encode($r);
				killme();
			}
		}

		// Create a status editor (for now - we'll need a WYSIWYG eventually) to create pages
		// Nickname is set to the observers xchan, and profile_uid to the owners.  
		// This lets you post pages at other people's channels.

		$x = array(
			'webpage'     => ITEM_TYPE_PDL,
			'is_owner'    => true,
			'nickname'    => \App::$profile['channel_address'],
			'showacl'     => false,
			'hide_voting' => true,
			'hide_future' => true,
			'hide_expire' => true,
			'hide_location' => true,
			'hide_weblink' => true,
			'hide_attach' => true,
			'hide_preview' => true,
			'ptlabel'     => t('Layout Name'),
			'profile_uid' => intval($owner),
			'expanded'    => true,
			'placeholdertitle' => t('Layout Description (Optional)'),
			'novoting' => true,
			'bbco_autocomplete' => 'comanche'
		);

		if($_REQUEST['title'])
			$x['title'] = $_REQUEST['title'];
		if($_REQUEST['body'])
			$x['body'] = $_REQUEST['body'];
		if($_REQUEST['pagetitle'])
			$x['pagetitle'] = $_REQUEST['pagetitle'];

		$editor = status_editor($a,$x);

		$r = q("select iid, sid, mid, title, body, mimetype, created, edited, item_type from item_id left join item on item_id.iid = item.id
			where item_id.uid = %d and service = 'PDL' and item_type = %d order by item.created desc",
			intval($owner),
			intval(ITEM_TYPE_PDL)
		);

		$pages = null;

		if($r) {
			$pages = array();
			foreach($r as $rr) {
				$element_arr = array(
					'type'      => 'layout',
					'title'     => $rr['title'],
					'body'      => $rr['body'],
					'created'   => $rr['created'],
					'edited'    => $rr['edited'],
					'mimetype'  => $rr['mimetype'],
					'pagetitle' => $rr['sid'],
					'mid'       => $rr['mid']
				);
				$pages[$rr['iid']][] = array(
					'url' => $rr['iid'],
					'title' => $rr['sid'],
					'descr' => $rr['title'],
					'mid' => $rr['mid'],
					'created' => $rr['created'],
					'edited' => $rr['edited'],
					'bb_element' => '[element]' . base64url_encode(json_encode($element_arr)) . '[/element]'
				);
			}
		}

		//Build the base URL for edit links
		$url = z_root() . '/editlayout/' . $which; 

		$o .= replace_macros(get_markup_template('layoutlist.tpl'), array(
			'$title'   => t('Layouts'),
			'$create'  => t('Create'),
			'$help'    => array('text' => t('Help'), 'url' => 'help/comanche', 'title' => t('Comanche page description language help')),
			'$editor'  => $editor,
			'$baseurl' => $url,
			'$name' => t('Layout Name'),
			'$descr' => t('Layout Description'),
			'$created' => t('Created'),
			'$edited' => t('Edited'),
			'$edit'    => t('Edit'),
			'$share'   => t('Share'),
			'$download'   => t('Download PDL file'),
			'$pages'   => $pages,
			'$channel' => $which,
			'$view'    => t('View'),
		));

		return $o;

	}

}