<?php

namespace App\Libraries\MySocket;

use CodeIgniter\Config\Services;
use CodeIgniter\Exceptions\ConfigException;
use Google\Client;
use Google\Service\Oauth2;

class GoogleSocketAPI extends Client
{
	private $session;
	private string $_access_token = "";
	private string $_token_name = "access_token";
	public function __construct()
	{
		parent::__construct();
		$this->setClientId(env('socket.google.client.id'));
		$this->setClientSecret(env('socket.google.client.key'));
		$this->setRedirectUri(base_url(env('socket.google.client.callback_url')));
		$this->addScope(Oauth2::USERINFO_EMAIL);
		$this->addScope(Oauth2::USERINFO_PROFILE);
		// $this->setPrompt('select_account consent');
		// $this->setAccessType('offline');
		// SSL 검증 비활성화
		$this->setHttpClient(new \GuzzleHttp\Client(['verify' => false]));
		// 사용자 정의 CA 번들 사용
		// $this->setHttpClient(new \GuzzleHttp\Client(['verify' => '/path/to/cacert.pem']));
		$this->session = Services::session();
	}

	public function setToken(string $access_code): void
	{
		// 토큰 정보 가져오기
		$tokenInfo = $this->fetchAccessTokenWithAuthCode($access_code);
		if (isset($tokenInfo['error'])) {
			throw new ConfigException($tokenInfo['error']);
		}
		// dd($tokenInfo);
		$this->_access_token = $tokenInfo[$this->_token_name];
		// Google Service에 접근하기 위해 Access Token 설정
		$this->setAccessToken([
			'access_token' => $this->_access_token,
			'expires_in' => 3600,
			'created' => time(),
		]);
		// 세션에 Token 값 설정
		$this->session->set($this->_token_name, $this->_access_token);
	}

	public function getToken(): string
	{
		return $this->session->get($this->_token_name);
	}

	public function isAccessTokenValid(): bool
	{
		// 액세스 토큰이 없으면 유효하지 않음
		if (empty($this->getAccessToken())) {
			return false;
		}

		// 토큰의 만료 시간 확인
		$expirationTime = $this->getTokenExpirationTime();
		if ($expirationTime === null) {
			return false;
		}

		// 현재 시간과 비교하여 유효성 확인
		return $expirationTime > time();
	}

	private function getTokenExpirationTime(): ?int
	{
		// 토큰 정보 디코딩
		$tokenParts = explode('.', $this->getToken());
		if (count($tokenParts) !== 3) {
			return null;
		}

		$payload = json_decode(base64_decode($tokenParts[1]), true);
		if (!isset($payload['exp'])) {
			return null;
		}

		return $payload['exp'];
	}
}