<?php namespace Services\OAuth2;
/**
 * Copyright 2016 OpenStack Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/

use Utils\Db\ITransactionService;
use OAuth2\Repositories\IAsymmetricKeyRepository;
use OAuth2\Models\IAsymmetricKey;

/**
 * Class AsymmetricKeyService
 * @package Services\OAuth2
 */
abstract class AsymmetricKeyService
{
    /**
     * @var ITransactionService
     */
    protected $tx_service;

    /**
     * @var IAsymmetricKeyRepository
     */
    protected $repository;

    public function __construct(
        IAsymmetricKeyRepository $repository,
        ITransactionService $tx_service)
    {
        $this->tx_service        = $tx_service;
        $this->repository        = $repository;
    }

    /**
     * @param array $params
     * @return IAsymmetricKey
     */
    abstract public function register(array $params);


    /**
     * @param int $key_id
     * @return bool
     */
    public function delete($key_id)
    {
        $repository = $this->repository;

        return $this->tx_service->transaction(function() use($key_id, $repository)
        {

            $key = $repository->getById($key_id);
            if(!$key) return false;
            $repository->delete($key);
            return true;
        });
    }

    /**
     * @param int $key_id
     * @param array $params
     * @return bool
     */
    public function update($key_id, array $params)
    {
        $repository = $this->repository;

        return $this->tx_service->transaction(function () use ($key_id, $params, $repository) {

            $key = $repository->getById($key_id);

            if (is_null($key))
            {
                return false;
            }

            $key_active = $repository->getActiveByCriteria($key->getType(), $key->getUse(), $key->getAlg()->getName());

            if($key_active && $params['active'] === true)
            {
                $key_active->active = false;
                $repository->add($key_active);
            }

            $allowed_update_params = array
            (
                'active',
            );

            foreach ($allowed_update_params as $param) {
                if (array_key_exists($param, $params)) {
                    $key->{$param} = $params[$param];
                }
            }

            $repository->add($key);
            return true;
        });
    }

}