<?php
/*
Copyright (C) 2018 All.In Data GmbH

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110_1301, USA.
*/

namespace AllInData\CF7CRIntegration\Admin\Controller;

use AllInData\CF7CRIntegration\AbstractController;
use AllInData\CF7CRIntegration\Admin\Block\SettingsApiBlock;
use AllInData\CF7CRIntegration\Admin\ConfigHandler;
use AllInData\CF7CRIntegration\CleverReach\ApiHandler;

/**
 * Class UpdateApiTokenController
 * @package AllInData\CF7CRIntegration\Admin\Controller
 */
class UpdateApiTokenController extends AbstractController
{
    /*
     * Flags
     */
    const ACTION_ID = 'aid_cf7cr_admin_settings_api_token_update';

    /**
     * @var ApiHandler
     */
    private $apiHandler;
    /**
     * @var ConfigHandler
     */
    private $configHandler;

    /**
     * UpdateApiTokenController constructor.
     * @param ApiHandler $apiHandler
     * @param ConfigHandler $configHandler
     */
    public function __construct(ApiHandler $apiHandler, ConfigHandler $configHandler)
    {
        parent::__construct();
        $this->apiHandler = $apiHandler;
        $this->configHandler = $configHandler;
    }

    /**
     * @inheritdoc
     */
    public function handleAction()
    {
        $code = filter_input(INPUT_GET, 'code', FILTER_SANITIZE_STRING);
        $redirectionTarget = $this->getRedirectUrl();
        $apiToken = $this->apiHandler->getApiToken($code, $redirectionTarget);
        if (is_string($apiToken)) {
            $this->throwError(sprintf(__('Failed to fetch api token: "%s"', AID_CF7CR_TEXTDOMAIN), $apiToken));
        }

        try {
            $date = new \DateTime();
            $date->add((new \DateInterval('PT'.$apiToken->getExpiresIn().'S')));
        } catch (\Exception $e) {
            $this->throwError(sprintf(__('Failed to process date with expiration interval: "%s"', AID_CF7CR_TEXTDOMAIN), $apiToken->getExpiresIn()));
        }
        $this->configHandler->setApiToken($apiToken);
        $this->configHandler->setApiTokenExpiry($date->format('Y-m-d H:i:s'));

        wp_safe_redirect($this->getTargetUrl());
        exit();
    }

    /**
     * @return string
     */
    private function getRedirectUrl()
    {
        return esc_url(admin_url('admin-post.php?action=' . UpdateApiTokenController::ACTION_ID));
    }

    /**
     * @return string
     */
    private function getTargetUrl()
    {
        return esc_url('options-general.php?page='.SettingsApiBlock::BLOCK_SLUG);
    }
}