<?php

namespace Zotlabs\Module;

use App;
use Zotlabs\Web\Controller;

require_once('include/attach.php');
require_once('include/photos.php');

class Embedphotos extends Controller {

	/**
	 *
	 * This is the POST destination for the embedphotos button
	 *
	 */
	function post() {
		if (argc() > 1 && argv(1) === 'album') {
			// API: /embedphotos/album
			$name = (x($_POST,'name') ? $_POST['name'] : null );
			if (! $name) {
				json_return_and_die(array('errormsg' => 'Error retrieving album', 'status' => false));
			}
			$album = $this->embedphotos_widget_album(array('channel_id' => local_channel(), 'album' => $name));
			json_return_and_die(array('status' => true, 'content' => $album));
		}
		if (argc() > 1 && argv(1) === 'albumlist') {
			// API: /embedphotos/albumlist
			$album_list = $this->embedphotos_album_list();
			json_return_and_die(array('status' => true, 'albumlist' => $album_list));
		}
		if (argc() > 1 && argv(1) === 'photolink') {
			// API: /embedphotos/photolink
			$href = (x($_POST,'href') ? $_POST['href'] : null );
			if (! $href) {
				json_return_and_die(array('errormsg' => 'Error retrieving link ' . $href, 'status' => false));
			}
			$resource_id = array_pop(explode("/", $href));

			$x = self::photolink($resource_id);
			if ($x) {
				json_return_and_die(array('status' => true, 'photolink' => $x, 'resource_id' => $resource_id));
			}
			json_return_and_die(array('errormsg' => 'Error retrieving resource ' . $resource_id, 'status' => false));

		}
	}


	protected static function photolink($resource) {
		$channel = App::get_channel();
		$output = EMPTY_STR;
		if ($channel) {
			$resolution = ((feature_enabled($channel['channel_id'],'large_photos')) ? 1 : 2);
			$r = q("select mimetype, height, width from photo where resource_id = '%s' and $resolution = %d and uid = %d limit 1",
				dbesc($resource),
				intval($resolution),
				intval($channel['channel_id'])
			);
			if (! $r) {
				return $output;
			}
			
			if ($r[0]['mimetype'] === 'image/jpeg') {
				$ext = '.jpg';
			}
			elseif ($r[0]['mimetype'] === 'image/png') {
				$ext = '.png';
			}
			elseif ($r[0]['mimetype'] === 'image/gif') {
				$ext = '.gif';
			}
			else {
				$ext = EMPTY_STR;
			}
			
			$output = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $resource . ']' .
				'[zmg=' . $r[0]['width'] . 'x' . $r[0]['height'] . ']' . z_root() . '/photo/' . $resource . '-' . $resolution .  $ext . '[/zmg][/zrl]';

			return $output;
		}
	}


	/**
	 * Copied from include/widgets.php::widget_album() with a modification to get the profile_uid from
	 * the input array as in widget_item()
	 *
	 * @param array $args
	 * @return string with HTML
	 */

	function embedphotos_widget_album($args) {

		$channel_id = 0;
		if (array_key_exists('channel_id', $args)) {
			$channel_id = $args['channel_id'];
			$channel = channelx_by_n($channel_id);
		}
		
		if (! $channel_id) {
			return '';
		}

		$owner_uid = $channel_id;
		require_once('include/security.php');
		$sql_extra = permissions_sql($channel_id);

		if (! perm_is_allowed($channel_id,get_observer_hash(),'view_storage'))
			return '';

		if ($args['album']) {
			$album = (($args['album'] === '/') ? '' : $args['album']);
		}
		
		if ($args['title']) {
			$title = $args['title'];
		}

		/**
		 * This may return incorrect permissions if you have multiple directories of the same name.
		 * It is a limitation of the photo table using a name for a photo album instead of a folder hash
		 */
		if ($album) {
			$x = q("select hash from attach where filename = '%s' and uid = %d limit 1",
				dbesc($album),
				intval($owner_uid)
			);
			if ($x) {
				$y = attach_can_view_folder($owner_uid,get_observer_hash(),$x[0]['hash']);
				if (! $y) {
					return '';
				}
			}
		}

		$order = 'DESC';

		$r = q("SELECT p.resource_id, p.id, p.filename, p.mimetype, p.imgscale, p.description, p.created FROM photo p INNER JOIN
				(SELECT resource_id, max(imgscale) imgscale FROM photo WHERE uid = %d AND album = '%s' AND imgscale <= 4 
				AND photo_usage IN ( %d, %d ) $sql_extra GROUP BY resource_id) ph
				ON (p.resource_id = ph.resource_id AND p.imgscale = ph.imgscale)
				ORDER BY created $order",
				intval($owner_uid),
				dbesc($album),
				intval(PHOTO_NORMAL),
				intval(PHOTO_PROFILE)
		);

		$photos = [];
		if ($r) {
			$twist = 'rotright';
			foreach ($r as $rr) {
				if ($twist == 'rotright') {
					$twist = 'rotleft';
				}
				else {
					$twist = 'rotright';
				}

				$ext = $phototypes[$rr['mimetype']];

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

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

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

		$o .= replace_macros(get_markup_template('photo_album.tpl'), [
			'$photos'            => $photos,
			'$album'             => (($title) ? $title : $album),
			'$album_id'          => rand(),
			'$album_edit'        => array(t('Edit Album'), $album_edit),
			'$can_post'          => false,
			'$upload'            => [ t('Upload'), z_root() . '/photos/' . $channel['channel_address'] . '/upload/' . bin2hex($album) ],
			'$order'             => false,
			'$upload_form'       => $upload_form,
			'$no_fullscreen_btn' => true
		]);

		return $o;
	}

	function embedphotos_album_list() {
		$p = photos_albums_list(App::get_channel(),App::get_observer());
		if ($p['success']) {
			return $p['albums'];
		}
		else {
			return null;
		}
	}

}