<?php
require_once('include/photo/photo_driver.php');
require_once('include/photos.php');
require_once('include/items.php');
require_once('include/acl_selectors.php');
require_once('include/bbcode.php');
require_once('include/security.php');
require_once('include/Contact.php');


function photos_init(&$a) {


	if((get_config('system','block_public')) && (! local_user()) && (! remote_user())) {
		return;
	}

	$o = '';

	if(argc() > 1) {
		$nick = argv(1);

		profile_load($a,$nick);

		$channelx = channelx_by_nick($nick);

		if(! $channelx)
			return;

		$a->data['channel'] = $channelx;

		$observer = $a->get_observer();
		$a->data['observer'] = $observer;

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

		head_set_icon($a->data['channel']['xchan_photo_s']);

		$a->page['htmlhead'] .= "<script> var ispublic = '" . t('everybody') . "'; var profile_uid = " . (($a->data['channel']) ? $a->data['channel']['channel_id'] : 0) . "; </script>" ;

	}

	return;
}


function photos_post(&$a) {

	logger('mod-photos: photos_post: begin' , LOGGER_DEBUG);


	logger('mod_photos: REQUEST ' . print_r($_REQUEST,true), LOGGER_DATA);
	logger('mod_photos: FILES '   . print_r($_FILES,true), LOGGER_DATA);

	$ph = photo_factory('');

	$phototypes = $ph->supportedTypes();

	$can_post  = false;

	$page_owner_uid = $a->data['channel']['channel_id'];

	if(perm_is_allowed($page_owner_uid,get_observer_hash(),'post_photos'))
		$can_post = true;

	if(! $can_post) {
		notice( t('Permission denied.') . EOL );
		if(is_ajax())
			killme();
		return;
	}

	$s = abook_self($page_owner_uid);

	if(! $s) {
		notice( t('Page owner information could not be retrieved.') . EOL);
		logger('mod_photos: post: unable to locate contact record for page owner. uid=' . $page_owner_uid);
		if(is_ajax())
			killme();
		return;
	}

	$owner_record = $s[0];	


	if((argc() > 3) && (argv(2) === 'album')) {

		$album = hex2bin(argv(3));

		if($album === t('Profile Photos')) {
			// not allowed
			goaway($a->get_baseurl() . '/' . $_SESSION['photo_return']);
		}

		if(! photos_album_exists($page_owner_uid,$album)) {
			notice( t('Album not found.') . EOL);
			goaway($a->get_baseurl() . '/' . $_SESSION['photo_return']);
		}


		/*
		 * RENAME photo album
		 */

		$newalbum = notags(trim($_REQUEST['albumname']));
		if($newalbum != $album) {
			$x = photos_album_rename($page_owner_uid,$album,$newalbum);
			if($x) {
				$newurl = str_replace(bin2hex($album),bin2hex($newalbum),$_SESSION['photo_return']);
				goaway($a->get_baseurl() . '/' . $newurl);
			}
		}

		/*
		 * DELETE photo album and all its photos
		 */

		if($_REQUEST['dropalbum'] == t('Delete Album')) {

			$res = array();

			// get the list of photos we are about to delete

			if(remote_user() && (! local_user())) {
				$str = photos_album_get_db_idstr($page_owner_uid,$album,remote_user());
			}
			elseif(local_user()) {
				$str = photos_album_get_db_idstr(local_user(),$album);
			}
			else {
				$str = null;
			}
			if(! $str) {
				goaway($a->get_baseurl() . '/' . $_SESSION['photo_return']);
			}

			$r = q("select id, item_restrict from item where resource_id in ( $str ) and resource_type = 'photo' and uid = %d",
				intval($page_owner_uid)
			);
			if($r) {
				foreach($r as $i) {
					drop_item($i['id'],false);
					if(! $item_restrict)
						proc_run('php','include/notifier.php','drop',$i['id']);
				}
			}

			// remove the associated photos in case they weren't attached to an item

			q("delete from photo where resource_id in ( $str ) and uid = %d",
				intval($page_owner_uid)
			);
		}
		
		goaway($a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address']);
	}

	if((argc() > 2) && (x($_REQUEST,'delete')) && ($_REQUEST['delete'] === t('Delete Photo'))) {

		// same as above but remove single photo

		$ob_hash = get_observer_hash();
		if(! $ob_hash)
			goaway($a->get_baseurl() . '/' . $_SESSION['photo_return']);

		$r = q("SELECT `id`, `resource_id` FROM `photo` WHERE ( xchan = '%s' or `uid` = %d ) AND `resource_id` = '%s' LIMIT 1",
			dbesc($ob_hash),
			intval(local_user()),
			dbesc($a->argv[2])
		);

		if($r) {
			q("DELETE FROM `photo` WHERE `uid` = %d AND `resource_id` = '%s'",
				intval($page_owner_uid),
				dbesc($r[0]['resource_id'])
			);
			$i = q("SELECT * FROM `item` WHERE `resource_id` = '%s' AND resource_type = 'photo' and `uid` = %d LIMIT 1",
				dbesc($r[0]['resource_id']),
				intval($page_owner_uid)
			);
			if(count($i)) {
				q("UPDATE `item` SET item_restrict = (item_restrict | %d), `edited` = '%s', `changed` = '%s' WHERE `parent_mid` = '%s' AND `uid` = %d",
					intval(ITEM_DELETED),
					dbesc(datetime_convert()),
					dbesc(datetime_convert()),
					dbesc($i[0]['mid']),
					intval($page_owner_uid)
				);

				$url = $a->get_baseurl();
				$drop_id = intval($i[0]['id']);

				if($i[0]['visible'])
					proc_run('php',"include/notifier.php","drop","$drop_id");
			}
		}

		goaway($a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . $_SESSION['album_return']);
	}

	if(($a->argc > 2) && ((x($_POST,'desc') !== false) || (x($_POST,'newtag') !== false)) || (x($_POST,'albname') !== false)) {


		$desc        = ((x($_POST,'desc'))    ? notags(trim($_POST['desc']))    : '');
		$rawtags     = ((x($_POST,'newtag'))  ? notags(trim($_POST['newtag']))  : '');
		$item_id     = ((x($_POST,'item_id')) ? intval($_POST['item_id'])       : 0);
		$albname     = ((x($_POST,'albname')) ? notags(trim($_POST['albname'])) : '');
		$adult       = ((x($_POST,'adult'))   ? intval($_POST['adult'])         : 0);
		$str_group_allow   = perms2str($_POST['group_allow']);
		$str_contact_allow = perms2str($_POST['contact_allow']);
		$str_group_deny    = perms2str($_POST['group_deny']);
		$str_contact_deny  = perms2str($_POST['contact_deny']);

		$resource_id = $a->argv[2];

		if(! strlen($albname))
			$albname = datetime_convert('UTC',date_default_timezone_get(),'now', 'Y');


		if((x($_POST,'rotate') !== false) && 
		   ( (intval($_POST['rotate']) == 1) || (intval($_POST['rotate']) == 2) )) {
			logger('rotate');

			$r = q("select * from photo where `resource_id` = '%s' and uid = %d and scale = 0 limit 1",
				dbesc($resource_id),
				intval($page_owner_uid)
			);
			if(count($r)) {
				$ph = photo_factory(dbunescbin($r[0]['data']), $r[0]['type']);
				if($ph->is_valid()) {
					$rotate_deg = ( (intval($_POST['rotate']) == 1) ? 270 : 90 );
					$ph->rotate($rotate_deg);

					$width  = $ph->getWidth();
					$height = $ph->getHeight();

					$x = q("update photo set data = '%s', height = %d, width = %d where `resource_id` = '%s' and uid = %d and scale = 0",
						dbescbin($ph->imageString()),
						intval($height),
						intval($width),
						dbesc($resource_id),
						intval($page_owner_uid)
					);

					if($width > 640 || $height > 640) {
						$ph->scaleImage(640);
						$width  = $ph->getWidth();
						$height = $ph->getHeight();
		
						$x = q("update photo set data = '%s', height = %d, width = %d where `resource_id` = '%s' and uid = %d and scale = 1",
							dbescbin($ph->imageString()),
							intval($height),
							intval($width),
							dbesc($resource_id),
							intval($page_owner_uid)
						);
					}

					if($width > 320 || $height > 320) {
						$ph->scaleImage(320);
						$width  = $ph->getWidth();
						$height = $ph->getHeight();

						$x = q("update photo set data = '%s', height = %d, width = %d where `resource_id` = '%s' and uid = %d and scale = 2",
							dbescbin($ph->imageString()),
							intval($height),
							intval($width),
							dbesc($resource_id),
							intval($page_owner_uid)
						);
					}	
				}
			}
		}

		$p = q("SELECT * FROM `photo` WHERE `resource_id` = '%s' AND `uid` = %d ORDER BY `scale` DESC",
			dbesc($resource_id),
			intval($page_owner_uid)
		);
		if($p) {
			$ext = $phototypes[$p[0]['type']];

			$r = q("UPDATE `photo` SET `description` = '%s', `album` = '%s', `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s' WHERE `resource_id` = '%s' AND `uid` = %d",
				dbesc($desc),
				dbesc($albname),
				dbesc($str_contact_allow),
				dbesc($str_group_allow),
				dbesc($str_contact_deny),
				dbesc($str_group_deny),
				dbesc($resource_id),
				intval($page_owner_uid)
			);
		}

		$item_private = (($str_contact_allow || $str_group_allow || $str_contact_deny || $str_group_deny) ? true : false);

		$old_adult = (($p[0]['photo_flags'] & PHOTO_ADULT) ? 1 : 0);
		if($old_adult != $adult) {
			$r = q("update photo set photo_flags = ( photo_flags ^ %d) where resource_id = '%s' and uid = %d",
				intval(PHOTO_ADULT),
				dbesc($resource_id),
				intval($page_owner_uid)
			);
		}

		/* Don't make the item visible if the only change was the album name */

		$visibility = 0;
		if($p[0]['description'] !== $desc || strlen($rawtags))
			$visibility = 1;

		if(! $item_id) {
			$item_id = photos_create_item($a->data['channel'],get_observer_hash(),$p[0],$visibility);

		}

		if($item_id) {
			$r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
				intval($item_id),
				intval($page_owner_uid)
			);

			if($r) {
				$old_tag    = $r[0]['tag'];
				$old_inform = $r[0]['inform'];
			}
		}


		// make sure the linked item has the same permissions as the photo regardless of any other changes
		$x = q("update item set allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s', item_private = %d
			where id = %d",
				dbesc($str_contact_allow),
				dbesc($str_group_allow),
				dbesc($str_contact_deny),
				dbesc($str_group_deny),
				intval($item_private),
				intval($item_id)
		);


		if(strlen($rawtags)) {

			$str_tags = '';
			$inform   = '';

			// if the new tag doesn't have a namespace specifier (@foo or #foo) give it a mention

			$x = substr($rawtags,0,1);
			if($x !== '@' && $x !== '#')
				$rawtags = '@' . $rawtags;

			require_once('include/text.php');
			$profile_uid = $a->profile['profile_uid'];

			$results = linkify_tags($a, $rawtags, (local_user()) ? local_user() : $profile_uid);

			$success = $results['success'];
			$post_tags = array();

			foreach($results as $result) {
				$success = $result['success'];
				if($success['replaced']) {
					$post_tags[] = array(
						'uid'   => $profile_uid, 
						'type'  => $success['termtype'],
						'otype' => TERM_OBJ_POST,
						'term'  => $success['term'],
						'url'   => $success['url']
					); 				
				}
			}

			$r = q("select * from item where id = %d and uid = %d limit 1",
				intval($item_id),
				intval($page_owner_uid)
			);

			if($r) {
				$r = fetch_post_tags($r,true);
				$datarray = $r[0];
				if($post_tags) {
					if((! array_key_exists('term',$datarray)) || (! is_array($datarray['term'])))
						$datarray['term'] = $post_tags;
					else
						$datarray['term'] = array_merge($datarray['term'],$post_tags);  
				}
				item_store_update($datarray,$execflag);
			}

		}
	
		goaway($a->get_baseurl() . '/' . $_SESSION['photo_return']);
		return; // NOTREACHED

	}


	/**
	 * default post action - upload a photo
	 */

	$_REQUEST['source'] = 'photos';

	$r = photo_upload($a->channel,$a->get_observer(), $_REQUEST);
	if(! $r['success']) {
		notice($r['message'] . EOL);
	}		
	
	if($_REQUEST['newalbum'])
		goaway($a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . bin2hex($_REQUEST['newalbum']));
	else
		goaway($a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . bin2hex(datetime_convert('UTC',date_default_timezone_get(),'now', 'Y')));		

}


function photos_content(&$a) {

	// URLs:
	// photos/name
	// photos/name/album/xxxxx (xxxxx is album name)
	// photos/name/image/xxxxx


	if((get_config('system','block_public')) && (! local_user()) && (! remote_user())) {
		notice( t('Public access denied.') . EOL);
		return;
	}

	$unsafe = ((array_key_exists('unsafe',$_REQUEST) && $_REQUEST['unsafe']) ? 1 : 0);
		
	require_once('include/bbcode.php');
	require_once('include/security.php');
	require_once('include/conversation.php');

	if(! x($a->data,'channel')) {
		notice( t('No photos selected') . EOL );
		return;
	}

	$ph = photo_factory('');
	$phototypes = $ph->supportedTypes();

	$_SESSION['photo_return'] = $a->cmd;

	//
	// Parse arguments 
	//

	$can_comment = perm_is_allowed($a->profile['profile_uid'],get_observer_hash(),'post_comments');

	if(argc() > 3) {
		$datatype = argv(2);
		$datum = argv(3);
	} else {
		$datatype = 'summary';
	}

	if(argc() > 4)
		$cmd = argv(4);
	else
		$cmd = 'view';

	//
	// Setup permissions structures
	//

	$can_post       = false;
	$visitor        = 0;


	$owner_uid = $a->data['channel']['channel_id'];
	$owner_aid = $a->data['channel']['channel_account_id'];

	$observer = $a->get_observer();

	$can_post = perm_is_allowed($owner_uid,$observer['xchan_hash'],'post_photos');
	$can_view = perm_is_allowed($owner_uid,$observer['xchan_hash'],'view_photos');

	if(! $can_view) {
		notice( t('Access to this item is restricted.') . EOL);
		return;
	}

	$sql_extra = permissions_sql($owner_uid);

	$o = "";

		$o .= "<script> var profile_uid = " . $a->profile['profile_uid'] 
			. "; var netargs = '?f='; var profile_page = " . $a->pager['page'] . "; </script>\r\n";

	// tabs

	$_is_owner = (local_user() && (local_user() == $owner_uid));
	$o .= profile_tabs($a,$_is_owner, $a->data['channel']['channel_address']);	

	/**
	 * Display upload form
	 */

	if( $can_post) {

		$uploader = '';

		$ret = array('post_url' => $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'],
				'addon_text' => $uploader,
				'default_upload' => true);

		call_hooks('photo_upload_form',$ret);

		/* Show space usage */

		$r = q("select sum(size) as total from photo where aid = %d and scale = 0 ",
			intval($a->data['channel']['channel_account_id'])
		);


		$limit = service_class_fetch($a->data['channel']['channel_id'],'photo_upload_limit');
		if($limit !== false) {
			$usage_message = sprintf( t("%1$.2f MB of %2$.2f MB photo storage used."), $r[0]['total'] / 1024000, $limit / 1024000 );
		}
		else {
			$usage_message = sprintf( t('%1$.2f MB photo storage used.'), $r[0]['total'] / 1024000 );
 		}

		if($_is_owner) {
			$channel = $a->get_channel();

			$channel_acl = array(
				'allow_cid' => $channel['channel_allow_cid'], 
				'allow_gid' => $channel['channel_allow_gid'], 
				'deny_cid' => $channel['channel_deny_cid'], 
				'deny_gid' => $channel['channel_deny_gid']
			);

			$lockstate = (($channel['channel_allow_cid'] || $channel['channel_allow_gid'] || $channel['channel_deny_cid'] || $channel['channel_deny_gid']) ? 'lock' : 'unlock');
		}

		$aclselect_e = (($_is_owner) ? populate_acl($channel_acl,false) : '');

		$selname = (($datum) ? hex2bin($datum) : '');

		$albums = ((array_key_exists('albums', $a->data)) ? $a->data['albums'] : photos_albums_list($a->data['channel'],$a->data['observer']));

		$tpl = get_markup_template('photos_upload.tpl');
		$upload_form = replace_macros($tpl,array(
			'$pagename' => t('Upload Photos'),
			'$sessid' => session_id(),
			'$usage' => $usage_message,
			'$nickname' => $a->data['channel']['channel_address'],
			'$newalbum_label' => t('Enter a new album name'),
			'$newalbum_placeholder' => t('or select an existing one (doubleclick)'),
			'$nosharetext' => t('Do not show a status post for this upload'),
			'$albums' => $albums['albums'],
			'$selname' => $selname,
			'$permissions' => t('Permissions'),
			'$aclselect' => $aclselect_e,
			'$lockstate' => $lockstate,
			'$uploader' => $ret['addon_text'],
			'$default' => (($ret['default_upload']) ? true : false),
			'$uploadurl' => $ret['post_url'],
			'$submit' => t('Submit')

		));

	}

	//
	// dispatch request
	//

	/*
	 * Display a single photo album
	 */

	if($datatype === 'album') {


		if((strlen($datum) & 1) || (! ctype_xdigit($datum))) {
			notice( t('Album name could not be decoded') . EOL);
			logger('mod_photos: illegal album encoding: ' . $datum);
			$datum = '';
		}

		$album = hex2bin($datum);

		$r = q("SELECT `resource_id`, max(`scale`) AS `scale` FROM `photo` WHERE `uid` = %d AND `album` = '%s' 
			AND `scale` <= 4 and ((photo_flags = %d) or (photo_flags & %d ) > 0) $sql_extra GROUP BY `resource_id`",
			intval($owner_uid),
			dbesc($album),
			intval(PHOTO_NORMAL),
			intval(($unsafe) ? (PHOTO_PROFILE|PHOTO_ADULT) : PHOTO_PROFILE)
		);
		if(count($r)) {
			$a->set_pager_total(count($r));
			$a->set_pager_itemspage(60);
		} else {
			goaway($a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address']);
		}

		if($_GET['order'] === 'posted')
			$order = 'ASC';
		else
			$order = 'DESC';

			
		$r = q("SELECT p.resource_id, p.id, p.filename, p.type, p.scale, p.description, p.created FROM photo p INNER JOIN
				(SELECT resource_id, max(scale) scale FROM photo WHERE uid = %d AND album = '%s' AND scale <= 4 AND (photo_flags = %d or photo_flags = %d ) $sql_extra GROUP BY resource_id) ph 
				ON (p.resource_id = ph.resource_id AND p.scale = ph.scale)
			ORDER BY created $order LIMIT %d OFFSET %d",
			intval($owner_uid),
			dbesc($album),
			intvaL(PHOTO_NORMAL),
			intval(($unsafe) ? (PHOTO_PROFILE|PHOTO_ADULT) : PHOTO_PROFILE),
			intval($a->pager['itemspage']),
			intval($a->pager['start'])
		);
		
		//edit album name
		$album_edit = null;
		if(($album !== t('Profile Photos')) && ($album !== 'Profile Photos') && ($album !== 'Contact Photos') && ($album !== t('Contact Photos'))) {
			if($can_post) {
				if($a->get_template_engine() === 'internal') {
					$album_e = template_escape($album);
				}
				else {
					$album_e = $album;
				}
				$albums = ((array_key_exists('albums', $a->data)) ? $a->data['albums'] : photos_albums_list($a->data['channel'],$a->data['observer']));
				$edit_tpl = get_markup_template('album_edit.tpl');
				$album_edit = replace_macros($edit_tpl,array(
					'$nametext' => t('Enter a new album name'),
					'$name_placeholder' => t('or select an existing one (doubleclick)'),
					'$nickname' => $a->data['channel']['channel_address'],
					'$album' => $album_e,
					'$albums' => $albums['albums'],
					'$hexalbum' => bin2hex($album),
					'$submit' => t('Submit'),
					'$dropsubmit' => t('Delete Album')
				));
			}
		}

		if($_GET['order'] === 'posted')
			$order =  array(t('Show Newest First'), $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . bin2hex($album));
		else
			$order = array(t('Show Oldest First'), $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . bin2hex($album) . '?f=&order=posted');

		$photos = array();
		if(count($r)) {
			$twist = 'rotright';
			foreach($r as $rr) {

				if($twist == 'rotright')
					$twist = 'rotleft';
				else
					$twist = 'rotright';
				
				$ext = $phototypes[$rr['type']];

				$imgalt_e = $rr['filename'];
				$desc_e = $rr['description'];

				$imagelink = ($a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/image/' . $rr['resource_id']
				. (($_GET['order'] === 'posted') ? '?f=&order=posted' : ''));

				$photos[] = array(
					'id' => $rr['id'],
					'twist' => ' ' . $twist . rand(2,4),
					'link' => $imagelink,
					'title' => t('View Photo'),
					'src' => $a->get_baseurl() . '/photo/' . $rr['resource_id'] . '-' . $rr['scale'] . '.' .$ext,
					'alt' => $imgalt_e,
					'desc'=> $desc_e,
					'ext' => $ext,
					'hash'=> $rr['resource_id'],
					'unknown' => t('Unknown')
				);
			}
		}

		if($_REQUEST['aj']) {
			if($photos) {
				$o = replace_macros(get_markup_template('photosajax.tpl'),array(
					'$photos' => $photos,
				));
			}
			else {
				$o = '<div id="content-complete"></div>';
			}
			echo $o;
			killme();
		}
		else {
			$o .= "<script> var page_query = '" . $_GET['q'] . "'; var extra_args = '" . extra_query_args() . "' ; </script>";
			$tpl = get_markup_template('photo_album.tpl');
			$o .= replace_macros($tpl, array(
				'$photos' => $photos,
				'$album' => $album,
				'$album_edit' => array(t('Edit Album'), $album_edit),
				'$can_post' => $can_post,
				'$upload' => array(t('Upload'), $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/upload/' . bin2hex($album)),
				'$order' => $order,
				'$upload_form' => $upload_form,
				'$usage' => $usage_message
			));

		}

		if((! $photos) && ($_REQUEST['aj'])) {
			$o .= '<div id="content-complete"></div>';
			echo $o;
			killme();
		}

//		$o .= paginate($a);

		return $o;

	}	

	/** 
	 * Display one photo
	 */

	if($datatype === 'image') {

		// fetch image, item containing image, then comments

		$ph = q("SELECT aid,uid,xchan,resource_id,created,edited,title,`description`,album,filename,`type`,height,width,`size`,scale,profile,photo_flags,allow_cid,allow_gid,deny_cid,deny_gid FROM `photo` WHERE `uid` = %d AND `resource_id` = '%s' 
			$sql_extra ORDER BY `scale` ASC ",
			intval($owner_uid),
			dbesc($datum)
		);

		if(! $ph) {

			/* Check again - this time without specifying permissions */

			$ph = q("SELECT id FROM photo WHERE uid = %d AND resource_id = '%s' LIMIT 1",
				intval($owner_uid),
				dbesc($datum)
			);
			if($ph) 
				notice( t('Permission denied. Access to this item may be restricted.') . EOL);
			else
				notice( t('Photo not available') . EOL );
			return;
		}


		$prevlink = '';
		$nextlink = '';

		if($_GET['order'] === 'posted')
			$order = 'ASC';
		else
			$order = 'DESC';


		$prvnxt = q("SELECT `resource_id` FROM `photo` WHERE `album` = '%s' AND `uid` = %d AND `scale` = 0 
			$sql_extra ORDER BY `created` $order ",
			dbesc($ph[0]['album']),
			intval($owner_uid)
		); 

		if(count($prvnxt)) {
			for($z = 0; $z < count($prvnxt); $z++) {
				if($prvnxt[$z]['resource_id'] == $ph[0]['resource_id']) {
					$prv = $z - 1;
					$nxt = $z + 1;
					if($prv < 0)
						$prv = count($prvnxt) - 1;
					if($nxt >= count($prvnxt))
						$nxt = 0;
					break;
				}
			}

			$prevlink = $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/image/' . $prvnxt[$prv]['resource_id'] . (($_GET['order'] === 'posted') ? '?f=&order=posted' : '');
			$nextlink = $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/image/' . $prvnxt[$nxt]['resource_id'] . (($_GET['order'] === 'posted') ? '?f=&order=posted' : '');
 		}


		if(count($ph) == 1)
			$hires = $lores = $ph[0];
		if(count($ph) > 1) {
			if($ph[1]['scale'] == 2) {
				// original is 640 or less, we can display it directly
				$hires = $lores = $ph[0];
			}
			else {
			$hires = $ph[0];
			$lores = $ph[1];
			}
		}

		$album_link = $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . bin2hex($ph[0]['album']);
 		$tools = Null;
 		$lock = Null;
 
		if($can_post && ($ph[0]['uid'] == $owner_uid)) {
			$tools = array(
				'profile'=>array($a->get_baseurl() . '/profile_photo/use/'.$ph[0]['resource_id'], t('Use as profile photo')),
			);
		}

		// lockstate
		$lockstate = ( ( (strlen($ph[0]['allow_cid']) || strlen($ph[0]['allow_gid'])
				|| strlen($ph[0]['deny_cid']) || strlen($ph[0]['deny_gid'])) )
				? array('lock', t('Private Photo'))
				: array('unlock', Null));

		$a->page['htmlhead'] .= '<script>$(document).keydown(function(event) {' . "\n";
		if($prevlink)
			$a->page['htmlhead'] .= 'if(event.ctrlKey && event.keyCode == 37) { event.preventDefault(); window.location.href = \'' . $prevlink . '\'; }' . "\n";
		if($nextlink)
			$a->page['htmlhead'] .= 'if(event.ctrlKey && event.keyCode == 39) { event.preventDefault(); window.location.href = \'' . $nextlink . '\'; }' . "\n";
		$a->page['htmlhead'] .= '});</script>';

		if($prevlink)
			$prevlink = array($prevlink, t('Previous'));

		$photo = array(
			'href' => $a->get_baseurl() . '/photo/' . $hires['resource_id'] . '-' . $hires['scale'] . '.' . $phototypes[$hires['type']],
			'title'=> t('View Full Size'),
			'src'  => $a->get_baseurl() . '/photo/' . $lores['resource_id'] . '-' . $lores['scale'] . '.' . $phototypes[$lores['type']] . '?f=&_u=' . datetime_convert('','','','ymdhis')
		);

		if($nextlink)
			$nextlink = array($nextlink, t('Next'));


		// Do we have an item for this photo?

		$linked_items = q("SELECT * FROM item WHERE resource_id = '%s' and resource_type = 'photo' 
			$sql_extra LIMIT 1",
			dbesc($datum)
		);

		if($linked_items) {

			xchan_query($linked_items);
			$linked_items = fetch_post_tags($linked_items,true);

			$link_item = $linked_items[0];

			$r = q("select * from item where parent_mid = '%s' 
				and item_restrict = 0 and uid = %d $sql_extra ",
				dbesc($link_item['mid']),
				intval($link_item['uid'])

			);

			if($r) {
				xchan_query($r);
				$r = fetch_post_tags($r,true);
				$r = conv_sort($r,'commented');
			}

			$tags = array();
			if($link_item['term']) {
				$cnt = 0;
				foreach($link_item['term'] as $t) {
					$tags[$cnt] = array(0 => format_term_for_display($t));
					if($can_post && ($ph[0]['uid'] == $owner_uid)) {
						$tags[$cnt][1] = 'tagrm/drop/' . $link_item['id'] . '/' . bin2hex($t['term']);   //?f=&item=' . $link_item['id'];
						$tags[$cnt][2] = t('Remove');
					}
					$cnt ++;
				}
			}

			if((local_user()) && (local_user() == $link_item['uid'])) {
				q("UPDATE `item` SET item_flags = (item_flags & ~%d) WHERE parent = %d and uid = %d and (item_flags & %d)>0",
					intval(ITEM_UNSEEN),
					intval($link_item['parent']),
					intval(local_user()),
					intval(ITEM_UNSEEN)
				);
			}
		}

//		logger('mod_photo: link_item' . print_r($link_item,true));

		// FIXME - remove this when we move to conversation module 

		$r = $r[0]['children'];

		$edit = null;
		if($can_post) {
			$album_e = $ph[0]['album'];
			$caption_e = $ph[0]['description'];
			$aclselect_e = populate_acl($ph[0]);
			$albums = ((array_key_exists('albums', $a->data)) ? $a->data['albums'] : photos_albums_list($a->data['channel'],$a->data['observer']));

			$_SESSION['album_return'] = bin2hex($ph[0]['album']);

			$edit = array(
				'edit' => t('Edit photo'),
				'id' => $link_item['id'],
				'rotatecw' => t('Rotate CW (right)'),
				'rotateccw' => t('Rotate CCW (left)'),
				'albums' => $albums['albums'],
				'album' => $album_e,
				'newalbum_label' => t('Enter a new album name'),
				'newalbum_placeholder' => t('or select an existing one (doubleclick)'),
				'nickname' => $a->data['channel']['channel_address'],
				'resource_id' => $ph[0]['resource_id'],
				'capt_label' => t('Caption'),
				'caption' => $caption_e,
				'tag_label' => t('Add a Tag'),
				'permissions' => t('Permissions'),
				'aclselect' => $aclselect_e,
				'lockstate' => $lockstate[0],
				'help_tags' => t('Example: @bob, @Barbara_Jensen, @jim@example.com'),
				'item_id' => ((count($linked_items)) ? $link_item['id'] : 0),
				'adult_enabled' => feature_enabled($owner_uid,'adult_photo_flagging'),
				'adult' => array('adult',t('Flag as adult in album view'), (($ph[0]['photo_flags'] & PHOTO_ADULT) ? 1 : 0),''),
				'submit' => t('Submit'),
				'delete' => t('Delete Photo')
			);
		}

		if(count($linked_items)) {

			$cmnt_tpl = get_markup_template('comment_item.tpl');
			$tpl = get_markup_template('photo_item.tpl');
			$return_url = $a->cmd;

			$like_tpl = get_markup_template('like_noshare.tpl');

			$likebuttons = '';

			if($can_post || $can_comment) {
				$likebuttons = replace_macros($like_tpl,array(
					'$id' => $link_item['id'],
					'$likethis' => t("I like this \x28toggle\x29"),
					'$nolike' => t("I don't like this \x28toggle\x29"),
					'$share' => t('Share'),
					'$wait' => t('Please wait')
				));
			}

			$comments = '';
			if(! count($r)) {
				if($can_post || $can_comment) {
					$commentbox = replace_macros($cmnt_tpl,array(
						'$return_path' => '', 
						'$mode' => 'photos',
						'$jsreload' => $return_url,
						'$type' => 'wall-comment',
						'$id' => $link_item['id'],
						'$parent' => $link_item['id'],
						'$profile_uid' =>  $owner_uid,
						'$mylink' => $observer['xchan_url'],
						'$mytitle' => t('This is you'),
						'$myphoto' => $observer['xchan_photo_s'],
						'$comment' => t('Comment'),
						'$submit' => t('Submit'),
						'$preview' => t('Preview'),
						'$ww' => '',
						'$feature_encrypt' => false
					));
				}
			}

			$alike = array();
			$dlike = array();
			
			$like = '';
			$dislike = '';


			if($r) {

				foreach($r as $item) {
					like_puller($a,$item,$alike,'like');
					like_puller($a,$item,$dlike,'dislike');
				}

				$like_count = ((x($alike,$link_item['mid'])) ? $alike[$link_item['mid']] : '');
				$like_list = ((x($alike,$link_item['mid'])) ? $alike[$link_item['mid'] . '-l'] : '');
				if (count($like_list) > MAX_LIKERS) {
					$like_list_part = array_slice($like_list, 0, MAX_LIKERS);
					array_push($like_list_part, '<a href="#" data-toggle="modal" data-target="#likeModal-' . $this->get_id() . '"><b>' . t('View all') . '</b></a>');
				} else {
					$like_list_part = '';
				}
				$like_button_label = tt('Like','Likes',$like_count,'noun');

				//if (feature_enabled($conv->get_profile_owner(),'dislike')) {
					$dislike_count = ((x($dlike,$link_item['mid'])) ? $dlike[$link_item['mid']] : '');
					$dislike_list = ((x($dlike,$link_item['mid'])) ? $dlike[$link_item['mid'] . '-l'] : '');
					$dislike_button_label = tt('Dislike','Dislikes',$dislike_count,'noun');
					if (count($dislike_list) > MAX_LIKERS) {
						$dislike_list_part = array_slice($dislike_list, 0, MAX_LIKERS);
						array_push($dislike_list_part, '<a href="#" data-toggle="modal" data-target="#dislikeModal-' . $this->get_id() . '"><b>' . t('View all') . '</b></a>');
					} else {
						$dislike_list_part = '';
					}
				//}


				$like    = ((isset($alike[$link_item['mid']])) ? format_like($alike[$link_item['mid']],$alike[$link_item['mid'] . '-l'],'like',$link_item['mid']) : '');
				$dislike = ((isset($dlike[$link_item['mid']])) ? format_like($dlike[$link_item['mid']],$dlike[$link_item['mid'] . '-l'],'dislike',$link_item['mid']) : '');

				// display comments

				foreach($r as $item) {
					$comment = '';
					$template = $tpl;
					$sparkle = '';

					if(((activity_match($item['verb'],ACTIVITY_LIKE)) || (activity_match($item['verb'],ACTIVITY_DISLIKE))) && ($item['id'] != $item['parent']))
						continue;

					$redirect_url = $a->get_baseurl() . '/redir/' . $item['cid'] ;
			

					$profile_url = zid($item['author']['xchan_url']);
					$sparkle = '';


					$profile_name   = $item['author']['xchan_name'];
					$profile_avatar = $item['author']['xchan_photo_m'];

					$profile_link = $profile_url;

					$drop = '';

					if($observer['xchan_hash'] === $item['author_xchan'] || $observer['xchan_hash'] === $item['owner_xchan'])
						$drop = replace_macros(get_markup_template('photo_drop.tpl'), array('$id' => $item['id'], '$delete' => t('Delete')));


					$name_e = $profile_name;
					$title_e = $item['title'];
					unobscure($item);
					$body_e = prepare_text($item['body'],$item['mimetype']);

					$comments .= replace_macros($template,array(
						'$id' => $item['id'],
						'$mode' => 'photos',
						'$profile_url' => $profile_link,
						'$name' => $name_e,
						'$thumb' => $profile_avatar,
						'$sparkle' => $sparkle,
						'$title' => $title_e,
						'$body' => $body_e,
						'$ago' => relative_date($item['created']),
						'$indent' => (($item['parent'] != $item['id']) ? ' comment' : ''),
						'$drop' => $drop,
						'$comment' => $comment
					));

				}
			
				if($can_post || $can_comment) {
					$commentbox = replace_macros($cmnt_tpl,array(
						'$return_path' => '',
						'$jsreload' => $return_url,
						'$type' => 'wall-comment',
						'$id' => $link_item['id'],
						'$parent' => $link_item['id'],
						'$profile_uid' =>  $owner_uid,
						'$mylink' => $observer['xchan_url'],
						'$mytitle' => t('This is you'),
						'$myphoto' => $observer['xchan_photo_s'],
						'$comment' => t('Comment'),
						'$submit' => t('Submit'),
						'$ww' => ''
					));
				}

			}
			$paginate = paginate($a);
		}
		
		$album_e = array($album_link,$ph[0]['album']);
		$like_e = $like;
		$dislike_e = $dislike;


		$photo_tpl = get_markup_template('photo_view.tpl');
		$o .= replace_macros($photo_tpl, array(
			'$id' => $link_item['id'], //$ph[0]['id'],
			'$album' => $album_e,
			'$tools' => $tools,
			'$lock' => $lockstate[1],
			'$photo' => $photo,
			'$prevlink' => $prevlink,
			'$nextlink' => $nextlink,
			'$desc' => $ph[0]['description'],
			'$filename' => $ph[0]['filename'],
			'$unknown' => t('Unknown'),
			'$tag_hdr' => t('In This Photo:'),
			'$tags' => $tags,
			'$edit' => $edit,	
			'$likebuttons' => $likebuttons,
			'$like' => $like_e,
			'$dislike' => $dislike_e,
			'$like_count' => $like_count,
			'$like_list' => $like_list,
			'$like_list_part' => $like_list_part,
			'$like_button_label' => $like_button_label,
			'$like_modal_title' => t('Likes','noun'),
			'$dislike_modal_title' => t('Dislikes','noun'),
			'$dislike_count' => $dislike_count,  //((feature_enabled($conv->get_profile_owner(),'dislike')) ? $dislike_count : ''),
			'$dislike_list' => $dislike_list, //((feature_enabled($conv->get_profile_owner(),'dislike')) ? $dislike_list : ''),
			'$dislike_list_part' => $dislike_list_part, //((feature_enabled($conv->get_profile_owner(),'dislike')) ? $dislike_list_part : ''),
			'$dislike_button_label' => $dislike_button_label, //((feature_enabled($conv->get_profile_owner(),'dislike')) ? $dislike_button_label : ''),
			'$modal_dismiss' => t('Close'),
			'$comments' => $comments,
			'$commentbox' => $commentbox,
			'$paginate' => $paginate,
		));

		$a->data['photo_html'] = $o;
		
		return $o;
	}

	// Default - show recent photos with upload link (if applicable)
	//$o = '';

	$r = q("SELECT `resource_id`, max(`scale`) AS `scale` FROM `photo` WHERE `uid` = %d AND `album` != '%s' AND `album` != '%s' 
		and ((photo_flags = %d) or (photo_flags & %d) > 0) $sql_extra GROUP BY `resource_id`",
		intval($a->data['channel']['channel_id']),
		dbesc('Contact Photos'),
		dbesc( t('Contact Photos')),
		intval(PHOTO_NORMAL),
		intval(($unsafe) ? (PHOTO_PROFILE|PHOTO_ADULT) : PHOTO_PROFILE)
	);
	if(count($r)) {
		$a->set_pager_total(count($r));
		$a->set_pager_itemspage(60);
	}
	
	$r = q("SELECT p.resource_id, p.id, p.filename, p.type, p.album, p.scale, p.created FROM photo p INNER JOIN 
		(SELECT resource_id, max(scale) scale FROM photo 
			WHERE uid=%d AND album != '%s' AND album != '%s' 
			AND (photo_flags = %d or ( photo_flags & %d ) > 0 ) $sql_extra group by resource_id) ph 
		ON (p.resource_id = ph.resource_id and p.scale = ph.scale) ORDER by p.created DESC LIMIT %d OFFSET %d",
		intval($a->data['channel']['channel_id']),
		dbesc('Contact Photos'),
		dbesc( t('Contact Photos')),
		intval(PHOTO_NORMAL),
		intval(($unsafe) ? (PHOTO_PROFILE|PHOTO_ADULT) : PHOTO_PROFILE),
		intval($a->pager['itemspage']),
		intval($a->pager['start'])
	);


	$photos = array();
	if(count($r)) {
		$twist = 'rotright';
		foreach($r as $rr) {
			if($twist == 'rotright')
				$twist = 'rotleft';
			else
				$twist = 'rotright';
			$ext = $phototypes[$rr['type']];
			
			if($a->get_template_engine() === 'internal') {
				$alt_e = template_escape($rr['filename']);
				$name_e = template_escape($rr['album']);
			}
			else {
				$alt_e = $rr['filename'];
				$name_e = $rr['album'];
			}

			$photos[] = array(
				'id'       => $rr['id'],
				'twist'    => ' ' . $twist . rand(2,4),
				'link'  	=> $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/image/' . $rr['resource_id'],
				'title' 	=> t('View Photo'),
				'src'     	=> $a->get_baseurl() . '/photo/' . $rr['resource_id'] . '-' . ((($rr['scale']) == 6) ? 4 : $rr['scale']) . '.' . $ext,
				'alt'     	=> $alt_e,
				'album'	=> array(
					'link'  => $a->get_baseurl() . '/photos/' . $a->data['channel']['channel_address'] . '/album/' . bin2hex($rr['album']),
					'name'  => $name_e,
					'alt'   => t('View Album'),
				),
				
			);
		}
	}
	
	if($_REQUEST['aj']) {
		if($photos) {
			$o = replace_macros(get_markup_template('photosajax.tpl'),array(
				'$photos' => $photos,
			));
		}
		else {
			$o = '<div id="content-complete"></div>';
		}
		echo $o;
		killme();
	}
	else {
		$o .= "<script> var page_query = '" . $_GET['q'] . "'; var extra_args = '" . extra_query_args() . "' ; </script>";
		$tpl = get_markup_template('photos_recent.tpl'); 
		$o .= replace_macros($tpl, array(
			'$title' => t('Recent Photos'),
			'$can_post' => $can_post,
			'$upload' => array(t('Upload'), $a->get_baseurl().'/photos/'.$a->data['channel']['channel_address'].'/upload'),
			'$photos' => $photos,
			'$upload_form' => $upload_form,
			'$usage' => $usage_message
		));

	}

	if((! $photos) && ($_REQUEST['aj'])) {
		$o .= '<div id="content-complete"></div>';
		echo $o;
		killme();
	}

//	paginate($a);
	return $o;
}