<?php

require_once('tag.inc.php');
require_once('albumutil.php');

define('PHP_CMD', '/usr/bin/php -n -d extension_dir=/lib/php/modules -d extension=syno_compiler.so -d extension=curl.so -d extension=bz2.so');

class TagAPI extends WebAPI {
    function __construct() {
        parent::__construct(SZ_WEBAPI_API_DESCRIPTION_PATH);
    }

    protected function Process()
    {
        if (!strcasecmp($this->method, "list")) {
            $this->TagList();
        } elseif (!strcasecmp($this->method, "getinfo")) {
            $this->GetInfo();
        } else {
            csSYNOPhotoMisc::CheckSessionTimeOut(true);

            if (!strcasecmp($this->method, "create")) {
                 $this->Create();
            } else if (!strcasecmp($this->method, "searchplace")) {
                $this->SearchPlace();
            } else {
                csSYNOPhotoMisc::CheckSessionTimeOut();

                if (!strcasecmp($this->method, "edit")) {
                    $this->Edit();
                } elseif (!strcasecmp($this->method, "delete")) {
                    $this->Delete();
				} elseif (!strcasecmp($this->method, "delete_unconfirmed_tag")) {
					$this->DeleteUnconfirmedTag();
				}
            }
        }
    }

	private function GetParams_SearchPlace()
	{
		if (!isset($_REQUEST['query']) || !isset($_REQUEST['location'])) {
			return false;
		}
		$params = array();
		$params['query'] = $_REQUEST['query'];
		$params['location'] = $_REQUEST['location'];
		$params['radius'] = (isset($_REQUEST['radius'])) ? $_REQUEST['radius'] : '500';
		$params['format'] = $_REQUEST['format'] === 'true';
		return $params;
	}

    private function GetParams_Edit()
    {
        if (!isset($_REQUEST['id']) || !isset($_REQUEST['name'])) {
            return false;
        }
        $arr = explode('tag_', $_REQUEST['id']);
        if (2 !== count($arr)) {
            return false;
        }
        $params['id'] = (int) $arr[1];
        $params['name'] = $_REQUEST['name'];

        // for geo tag
        $params['place_id'] = (isset($_REQUEST['place_id'])) ? $_REQUEST['place_id'] : null;
        $params['reference'] = (isset($_REQUEST['reference'])) ? $_REQUEST['reference'] : null;
        $params['lat'] = (isset($_REQUEST['lat'])) ? $_REQUEST['lat'] : null;
        $params['lng'] = (isset($_REQUEST['lng'])) ? $_REQUEST['lng'] : null;
        $params['address'] = (isset($_REQUEST['address'])) ? $_REQUEST['address'] : null;
        return $params;
    }

    private function GetParams_Create()
    {
        if (!isset($_REQUEST['name']) || !isset($_REQUEST['type'])) {
            return false;
        }
        $params['name'] = $_REQUEST['name'];
        $params['type'] = $_REQUEST['type'];
        if (!in_array($params['type'], array('people', 'geo', 'desc'))) {
            return false;
        }

        // for geo tag
        if ('geo' === $params['type']) {
            $params['place_id'] = (isset($_REQUEST['place_id'])) ? $_REQUEST['place_id'] : null;
            $params['reference'] = (isset($_REQUEST['reference'])) ? $_REQUEST['reference'] : null;
            $params['lat'] = (isset($_REQUEST['lat'])) ? $_REQUEST['lat'] : null;
            $params['lng'] = (isset($_REQUEST['lng'])) ? $_REQUEST['lng'] : null;
            $params['address'] = (isset($_REQUEST['address'])) ? $_REQUEST['address'] : null;
        }
        return $params;
    }

    private function GetParams_Info()
    {
        if (!isset($_REQUEST['id'])) {
            return false;
        }
        $params['id'] = array();
        $arr = explode(',', $_REQUEST['id']);
        foreach ($arr as $item) {
            $split = explode('tag_', $item);
            if (2 !== count($split)) {
                return false;
            }
            $params['id'][] = (int) $split[1];
        }

        $params['thumbnail_status'] = isset($_REQUEST['thumbnail_status']) ? $_REQUEST['thumbnail_status'] : 'false';
        if (!in_array($params['thumbnail_status'], array('true', 'false'))) {
            return false;
        }

        $params['additional'] = explode(',', $_REQUEST['additional']);
        return $params;
    }

    private function GetParams_List()
    {
        if (!isset($_REQUEST['offset']) || !isset($_REQUEST['limit']) || !isset($_REQUEST['type'])) {
            return false;
        }
        if (!is_numeric($_REQUEST['offset']) || !is_numeric($_REQUEST['limit'])) {
            return false;
        }
        $params['offset'] = (int)$_REQUEST['offset'];
        $params['limit'] = (int)$_REQUEST['limit'];
        $params['type'] = explode(',', $_REQUEST['type']);
        foreach ($params['type'] as $type) {
            if (!in_array($type, array('people', 'geo', 'desc'))) {
                return false;
            }
        }

        $params['thumbnail_status'] = isset($_REQUEST['thumbnail_status']) ? $_REQUEST['thumbnail_status'] : 'false';
        if (!in_array($params['thumbnail_status'], array('true', 'false'))) {
            return false;
        }

        $params['sort_by'] = (isset($_REQUEST['sort_by'])) ? $_REQUEST['sort_by'] : 'title';
        if ((null !== $params['sort_by']) && !in_array($params['sort_by'], array('title'))) {
            return false;
        }
        $params['sort_direction'] = (isset($_REQUEST['sort_direction'])) ? $_REQUEST['sort_direction'] : 'asc';
        if ((null !== $params['sort_direction']) && !in_array($params['sort_direction'], array('asc', 'desc'))) {
            return false;
        }

        $params['unconfirm_people_tag'] = isset($_REQUEST['unconfirm_people_tag']) ? $_REQUEST['unconfirm_people_tag'] : 'false';
        if (!in_array($params['unconfirm_people_tag'], array('true', 'false'))) {
            return false;
        }

        $params['additional'] = explode(',', $_REQUEST['additional']);

        return $params;
    }

    private function CategoryNameToNum($name)
    {
        if (!isset($name)) {
            return false;
        }
        switch ($name) {
        case 'people':
            $codeNum = Label::PEOPLE;
            break;
        case 'geo':
            $codeNum = Label::GEO;
            break;
        case 'desc':
            $codeNum = Label::DESC;
            break;
        default:
            return false;
            break;
        }
        return $codeNum;
    }

    private function FormListTags($data, $params)
    {
		$extraConfig = array(
			'needThumbSize'	=> in_array('thumb_size', $params['additional']),
			'param'			=> $params
		);

        $tags = array();
        foreach ($data as $key => $value) {
            // 0 - people tag; 1 - geo tag; 2 - desc tag
            if (Label::PEOPLE === $key && !in_array('people', $params['type'])) {
                continue;
            }
            if (Label::GEO === $key && !in_array('geo', $params['type'])) {
                continue;
            }
            if (Label::DESC === $key && !in_array('desc', $params['type'])) {
                continue;
            }
            foreach ($data[$key] as $item) {
				$tag = Decorator::TagFormula($item, $extraConfig);
                $tags[] = $tag;
            }
        }
        return $tags;
    }

    private function FormInfoTags($data, $params)
    {
        $tags = array();
		$extraConfig = array(
			'needThumbSize'	=> in_array('thumb_size', $params['additional']),
			'param'			=> $params
		);
        foreach ($data as $item) {
			$tag = Decorator::TagFormula($item, $extraConfig);
			$tags[] = $tag;
        }
        return $tags;
    }

    private function AddUnConfirmTag($list, $params, &$tags)
    {
        $needThumbSize = in_array('thumb_size', $params['additional']);

        $arr = array();
        $unConfirmTag['id'] = SYNOPHOTO_UNCONFIRM_TAG_ID;
        $unConfirmTag['type'] = 'tag';
        $unConfirmTag['tag_type'] = 'people';
        $unConfirmTag['name'] = '';

		$coverPath = '';
        if (is_array($list)) {
            $pathList = array_keys($list);
			$coverPath = $pathList[0];
        }
        $blConversion = csSYNOPhotoMisc::IsAlbumAllowConversion(dirname($coverPath));
        list($orig_resolutionx, $orig_resolutiony, $blThumbRotated) = AlbumAPIUtil::GetCoverResolutionRotation($coverPath);
        AlbumAPIUtil::FillThumbStatus($unConfirmTag, $coverPath, $needThumbSize, $orig_resolutionx, $orig_resolutiony, $blThumbRotated, $blConversion);

        array_push($arr, $unConfirmTag);
        array_splice($tags, 0, 0, $arr);
    }

    private function SortTags($sortBy, $sortDirection, &$sortTags)
    {
        if ('title' === $sortBy) {
            if ('asc' === $sortDirection) {
                return;
            } else {
                $sortTags = array_reverse($sortTags);
            }
        }
    }

    private function TagList()
    {
        if (false === ($params = $this->GetParams_List())) {
            $this->SetError(WEBAPI_ERR_BAD_REQUEST);
            goto End;
        }
        // get category type number  - people(0), geo(1), desc(2)
        $types = array();
        foreach ($params['type'] as $type) {
            if (false === ($num = $this->CategoryNameToNum($type))) {
                $this->SetError(WEBAPI_ERR_BAD_REQUEST);
                goto End;
            }
            array_push($types, $num);
        }
        // database query
        $result = Label::GetByCategoryPermission($types, isset($_SESSION[SYNOPHOTO_ADMIN_USER]['admin_syno_user']));
		$totalTags = $this->FormListTags($result, $params);
        
        // sorting
        $this->SortTags($params['sort_by'], $params['sort_direction'], $totalTags);

        // add people unconfirm tag
        if (in_array('people', $params['type']) && 'true' === $params['unconfirm_people_tag']) {
            $list = AlbumAPIUtil::GetUnConfirmItemList();
            if (0 < (int)$list['total']) {
                $this->AddUnConfirmTag($list, $params, $totalTags);
            }
        }
        $total = count($totalTags);

        // set offset and limit
        if (0 > $params['limit']) {
            $tags = array_slice($totalTags, $params['offset']);
        } else {
            $tags = array_slice($totalTags, $params['offset'], $params['limit']);
        }

        $resp['total'] = (int)$total;
        $offset = (0 > $params['limit']) ? $resp['total'] : $params['offset'] + $params['limit'];
        $resp['offset'] = ($offset > $total) ?  (int)$total : (int)$offset;
        $resp['tags'] = $tags;
        $this->SetResponse($resp);
    End:
        return;
    }

    private function GetInfo()
    {
        if (false === ($params = $this->GetParams_Info())) {
            $this->SetError(WEBAPI_ERR_BAD_REQUEST);
            goto End;
        }

        // database query
        if (false === ($result = Label::GetByIds($params['id']))) {
            $this->SetError(PHOTOSTATION_TAG_GETINFO_FAIL);
            goto End;
        }
        // form to webapi format
        $tags = $this->FormInfoTags($result, $params);

        $resp['tags'] = $tags;
        $this->SetResponse($resp);
    End:
        return;
    }

    private function Create()
    {
        if (false === ($params = $this->GetParams_Create())) {
            $this->SetError(WEBAPI_ERR_BAD_REQUEST);
            goto End;
        }
        // add label parameter
        $label['name'] = $params['name'];
        $label['category'] = $this->CategoryNameToNum($params['type']);
        $label['info'] = '';
        if ('geo' === $params['type']) {
			$info['placeId'] = '';
            if (null !== $params['place_id']) {
                $info['placeId'] = $params['place_id'];
            }
            if (null !== $params['reference']) {
                $info['reference'] = $params['reference'];
            }
            if (null !== $params['lat']) {
                $info['lat'] = $params['lat'];
            }
            if (null !== $params['lng']) {
                $info['lng'] = $params['lng'];
            }
            if (null !== $params['address']) {
                $info['address'] = $params['address'];
            }
            if (!empty($info)) {
                $json = json_encode($info);
                $label['info'] = $json;
            }
        }

        $blCreateNewTag = false;
        if ('geo' === $params['type']) {
            // (name, place_id) as primary key in geo tag
            if (false === ($row = Label::GetGeoLabelByNamePlaceId($label['name'], $info['placeId']))) {
                $blCreateNewTag = true;
            }
        } elseif ('people' === $params['type'] || 'desc' === $params['type']) {
            // (name, category) as primary key in people, desc tag
            if (false === ($row = Label::GetByNameCategory($label['name'], $label['category']))) {
                $blCreateNewTag = true;
            }
        }
        if ($blCreateNewTag) {
            // database query
            if (false === ($lastinsertId = Label::Add($label['name'], $label['category'], $label['info']))) {
                $this->SetError(PHOTOSTATION_TAG_CREATE_FAIL);
                goto End;
            }
            $row = array('id' => $lastinsertId);
        }

        $resp['id'] = 'tag_'.$row['id'];
        $this->SetResponse($resp);
    End:
        return;
    }

    private function Edit()
    {
        if (false === ($params = $this->GetParams_Edit())) {
            $this->SetError(WEBAPI_ERR_BAD_REQUEST);
            goto End;
        }

        // get original label
		$id = $params['id'];
        if (false === ($label_objs = Label::GetByIds(array($id)))) {
            $this->SetError(PHOTOSTATION_TAG_EDIT_FAIL);
            goto End;
        }
		$result = $label_objs[$id];
        $origLabel = json_decode($result['info'], true);
        $type = $result['category'];
        // add label parameter
        $label['info'] = '';
        if (Label::GEO === $type) {
            $info['placeId'] = (null !== $params['place_id']) ? $params['place_id'] : $origLabel['placeId'];
            $info['reference'] = (null !== $params['reference']) ? $params['reference'] : $origLabel['reference'];
            $info['lat'] = (null !== $params['lat']) ? $params['lat'] : $origLabel['lat'];
            $info['lng'] = (null !== $params['lng']) ? $params['lng'] : $origLabel['lng'];
            $info['address'] = (null !== $params['address']) ? $params['address'] : $origLabel['address'];
            if ('' === $info['placeId'] || null === $info['placeId']) {
                unset($info['placeId']);
            }
            if ('' === $info['reference'] || null === $info['reference']) {
                unset($info['reference']);
            }
            if ('' === $info['lat'] || null === $info['lat']) {
                unset($info['lat']);
            }
            if ('' === $info['lng'] || null === $info['lng']) {
                unset($info['lng']);
            }
            if ('' === $info['address'] || null === $info['address']) {
                unset($info['address']);
            }
            $label['info'] = json_encode($info);
        }

        // check tag exist
        if (Label::isDuplicated($params['id'], $params['name'], $info['placeId'], $type)) {
            $this->SetError(PHOTOSTATION_TAG_HAS_EXIST);
            goto End;
        }

        // database query
        if (0 === Label::EditById($params['id'], $params['name'], $label['info'])) {
            $this->SetError(PHOTOSTATION_TAG_EDIT_FAIL);
            goto End;
        }

        // update metadata
        if (Label::GEO !== $type) {
            $image_label_objs = ItemLabel::GetPhotoLabelByLabelIds(array($params['id']));
            foreach ($image_label_objs as $objs) {
                self::OutputSingleSpace();
                ItemLabel::UpdatePhotoMetadata($objs['image_id'], $result['category']);
            }
        }

    End:
        return;
    }

    private function Delete()
    {
        if (false === ($params = $this->GetParams_Info())) {
            $this->SetError(WEBAPI_ERR_BAD_REQUEST);
            goto End;
        }

        foreach ($params['id'] as $id) {
            // To avoid cgi timeout, have to delete label one by one
            // Label::DeleteAllByIds support delete multilabels
            self::OutputSingleSpace();
            Label::DeleteAllByIds(array($id));
        }
    End:
        return;
    }

	private function DeleteUnconfirmedTag()
	{
		$unconfirmedLabelId = ItemLabel::GetUnconfirmedLabelId();
		Label::DeleteAllByIds($unconfirmedLabelId, false);
	}

	private function SearchPlace()
	{
		if (false === ($params = $this->GetParams_SearchPlace())) {
			$this->SetError(WEBAPI_ERR_BAD_REQUEST);
			goto End;
		}

		$query = escapeshellarg($params['query']);
		$location = escapeshellarg($params['location']);
		$radius = escapeshellarg($params['radius']);
		$language = escapeshellarg($_SESSION[SYNOPHOTO_ADMIN_USER]['lang']);

		$phppath = '/var/packages/PhotoStation/target/photo_scripts/encrypted/tag_place_search.php';

		$cmd = PHP_CMD." $phppath -q $query -l $location -r $radius -n $language";


		@exec($cmd, $output, $ret);
		if (0 !== $ret) {
			$this->SetError(PHOTOSTATION_TAG_SEARCH_FAIL);
			goto End;
		}

		$json = json_decode(implode('', $output), true);

		$searchPlaces = array();
		$existPlace = array();

		if (is_array($json['results'])) {
			foreach ($json['results'] as $place) {
				$item = array();
				$item['address'] = $place['formatted_address'];
				$item['gps'] = $place['geometry']['location'];
				$item['placeId'] = $place['id'];
				$item['name'] = $place['name'];
				$item['tagId'] = -1;
				$item['type'] = 'search';
				$searchPlaces[] = $item;
			}
		}
		$existPlace = Label::SearchGeoLabel($params['query']);

		if ($params['format']) {
			for($i=0; $i < count($existPlace); ++$i) {
				$existPlace[$i]['type'] = 'db';
			}
			$resp = array_merge($existPlace, $searchPlaces);
		} else {
			$resp['existPlaces'] = $existPlace;
			$resp['searchPlaces'] = $searchPlaces;
		}

		$this->SetResponse($resp);
	End:
		return;
	}

	protected function CheckPermission()
	{
		csSYNOPhotoDB::GetDBInstance()->SetSessionCache();

		$res = true;
		$check = array(
			"edit" => "admin",
			"delete" => "admin",
			"delete_unconfirmed_tag" => "admin",
			"create" => "manage",
			"searchplace" => "manage"
		);
		if (!array_key_exists($this->method, $check)) {
			goto End;
		}

		$funcName = "check_".$check[$this->method];

		if (!method_exists($this, $funcName)) {
			$res = false;
			goto End;
		}

		$res = $this->$funcName();

	End:
		if (!$res) {
			$this->SetError(PHOTOSTATION_TAG_ACCESS_DENY);
		}
		return $res;
	}

	private function check_admin()
	{
		return isset($_SESSION[SYNOPHOTO_ADMIN_USER]['admin_syno_user']);
	}

	private function check_manage()
	{
		if (isset($_SESSION[SYNOPHOTO_ADMIN_USER]['admin_syno_user'])) {
			return true;
		}
		if (0 < count($_SESSION[SYNOPHOTO_ADMIN_USER]['manageable_album'])) {
			return true;
		}
		return false;
	}
}

$api = new TagAPI();
$api->Run();


?>