<?php

namespace App\Http\Controllers\OAuth2;

use \League\OAuth2\Client\Provider\GenericProvider;
use \Illuminate\Support\Facades\Auth;

use App\Http\Controllers\Controller;
use App\OAuth2User;


/**
 * Description of LoginController
 *
 * @author Andrey Pokidov <pokidov@e-traffic.ru>
 * @date 25 February 2020
 */
class LoginController extends Controller
{
    /**
     * @var GenericProvider
     */
    private static $provider = null;
    
    public function login()
    {
        //TODO: use the PHP league OAuth2 Client
        return redirect(self::provider()->getAuthorizationUrl());
    }
    
    public function completeLogin()
    {
        $accessToken = self::provider()->getAccessToken('authorization_code', [
            'code' => request()->get('code')
        ]);

/*
        echo $accessToken->getToken() . "\n";
        echo $accessToken->getRefreshToken() . "\n";
        echo $accessToken->getExpires() . "\n";
        echo ($accessToken->hasExpired() ? 'expired' : 'not expired') . "\n";
*/

        $resourceOwner = self::provider()->getResourceOwner($accessToken);
        
        $userData = $resourceOwner->toArray();
        
        $user = OAuth2User::getById($userData['resourceOwnerId']);
        
        if (is_null($user)) {
            $user = new OAuth2User();
            $user->id = intval($userData['resourceOwnerId']);
            $user->email = $userData['email'];
        }
        
        $user->name = $userData['name'];
        $user->patronymic = $userData['patronymic'];
        $user->lastname = $userData['lastname'];
        $user->access_token = $accessToken->getToken();
        $user->refresh_token = $accessToken->getRefreshToken();
        $user->expires_at = date('Y-m-d H:i:s', $accessToken->getExpires());
        
        $user->save();
        
        Auth::guard()->login($user);
        
        return 'complete login';
    }
    
    public function show()
    {
        var_dump(request()->session()->all());
    }
    
    /**
     * @return GenericProvider
     */
    private static function provider()
    {
        if (!is_null(self::$provider)) {
            return self::$provider;
        }
        
        self::$provider = new GenericProvider([
            'clientId' => 3, // TODO: define value
            'clientSecret' => 'v3Oi3425I83g3x1rNqQ45l43sM9z4Xj3Q2e92q9b',
            'redirectUri' => 'https://oauth2-client.pokidov-dev.ln/login/complete',
            'scopes' => 'fullname email birthday',
            'urlAuthorize'            => 'https://oauth2-server.pokidov-dev.ln/oauth/authorize',
            'urlAccessToken'          => 'https://oauth2-server.pokidov-dev.ln/oauth/token',
            'urlResourceOwnerDetails' => 'https://oauth2-api.pokidov-dev.ln/api/oauth/resource'
        ]);
        
        return self::$provider;
    }
}