<?php

Lib::loadClass('Relations');
Lib::loadClass('Http');

class Api_Process_P5_GetRelations { // TODO: extends Api_ProcessBase

	static function run($args, $responseForm) {
		$typeName = (!empty($args['typeName'][0])) ? $args['typeName'][0] : '';
		if (!$typeName) throw new Api_OwsException("Missing value for 'typeName'", 501, null, 'MissingParameterValue', 'request');
		$primaryKey = (!empty($args['primaryKey'][0])) ? $args['primaryKey'][0] : '';
		if (!$primaryKey) throw new Api_OwsException("Missing value for 'primaryKey'", 501, null, 'MissingParameterValue', 'request');
		$remoteTypeName = (!empty($args['remoteTypeName'][0])) ? $args['remoteTypeName'][0] : '';
		if (!$remoteTypeName) throw new Api_OwsException("Missing value for 'remoteTypeName'", 501, null, 'MissingParameterValue', 'request');

		try {
			Relations::isAllowedToGetRelation($userLogin = User::getLogin(), $typeName, $primaryKey, $remoteTypeName);
			$listRelations = Relations::getRelations($typeName, $primaryKey, $remoteTypeName);
			$totalRelations = count($listRelations);
		} catch (HttpException $e) {
			DBG::log($e);
			throw new Api_OwsException($e->getMessage(), $e->getCode(), null, Http::getStatusText($e->getCode()), 'request');
		} catch (Exception $e) {
			DBG::log($e);
			throw new Api_OwsException("User is not allowed to read relations from '{$typeName}.{$primaryKey}' to '{$remoteTypeName}'.\n" . $e->getMessage(), 501, null, 'AccessDenied', 'request');
		}

		header('Content-Type: application/json');
		echo json_encode([
			'type' => "success",
			'msg' => "done",
			'body' => [
				'relationSource' => [
					'namespace' => Api_WfsNs::toNamespace($typeName),
					'primaryKey' => $primaryKey,
					'featureID' => Api_WfsNs::toTypeName($typeName) . ".{$primaryKey}",
				],
				'relationTarget' => [
					'typeName' => Api_WfsNs::toTypeName($remoteTypeName),
				],
				'total' => $totalRelations,
				'relations' => $listRelations,
				// 'total' => $total,
			]
		]);
		exit;
	}

}