<?php

namespace App\Security;

use App\Entity\User;
use App\Security\Hasher\PasswordEncoder;
use App\Service\SQLLoginService;
use App\SQLLogin\Exception\DatabaseConnectionException;
use App\SQLLogin\Exception\DataToFetchConfigurationException;
use App\SQLLogin\Exception\InvalidSQLPasswordException;
use App\SQLLogin\Exception\LoginElementsConfigurationException;
use App\SQLLogin\Exception\SecurityPatternConfigurationException;
use Exception;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;
use Symfony\Component\Security\Core\Security;
use Symfony\Component\Security\Http\Authenticator\AbstractLoginFormAuthenticator;
use Symfony\Component\Security\Http\Authenticator\Passport\Badge\RememberMeBadge;
use Symfony\Component\Security\Http\Authenticator\Passport\Badge\UserBadge;
use Symfony\Component\Security\Http\Authenticator\Passport\SelfValidatingPassport;

class SQLLoginUserAuthenticator extends AbstractLoginFormAuthenticator
{
    public const LOGIN_ROUTE = 'app_login';
    public const ERROR_LOGIN = 'error_login';
    public const ERROR_PDO = 'error_pdo';
    public const ERROR_SQL_LOGIN = 'error_sql_login';
    public const ERROR_CONFIGURATION = 'error_configuration';
    public const ERROR_DATA_TO_FETCH_CONFIGURATION = 'error_data_to_fetch_configuration';
    public const ERROR_SECURITY_PATTERN_CONFIGURATION = 'error_security_pattern_configuration';

    protected string $baseUrl;
    private SQLLoginService $sqlLoginService;
    private PasswordEncoder $passwordHasher;

    public function __construct(string $baseUrl, SQLLoginService $sqlLoginService, PasswordEncoder $passwordHasher)
    {
        $this->baseUrl = $baseUrl;
        $this->sqlLoginService = $sqlLoginService;
        $this->passwordHasher = $passwordHasher;
    }

    /**
     * Called on every request to decide if this authenticator should be
     * used for the request. Returning `false` will cause this authenticator
     * to be skipped.
     */
    public function supports(Request $request): bool
    {
        return self::LOGIN_ROUTE === $request->attributes->get('_route') && $request->isMethod('POST');
    }

    public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey): RedirectResponse
    {
        return new RedirectResponse($this->baseUrl . '/connect/login-accept');
    }

    public function onAuthenticationFailure(Request $request, AuthenticationException $exception): RedirectResponse
    {
        $request->getSession()->set(Security::AUTHENTICATION_ERROR, $exception);

        return new RedirectResponse($this->baseUrl . '/login');
    }

    public function authenticate(Request $request): SelfValidatingPassport
    {
        $form = $request->request->get('login');
        $login = $form['login'];
        $plaintextPassword = $form['password'];
        $rememberMe = isset($form['_remember_me']) ? true : false;
        $session = $request->getSession();
        try {
            // requête préparée
            list($remoteHashedPassword, $remoteSalt) = $this->sqlLoginService->fetchPassword($login);
        } catch (DatabaseConnectionException $e) {
            $session->set(self::ERROR_PDO, true);
            throw new AuthenticationException();
        } catch (LoginElementsConfigurationException $e) {
            $session->set(self::ERROR_CONFIGURATION, true);
            throw new AuthenticationException();
        } catch (Exception $exception) {
            $request->getSession()->set(self::ERROR_LOGIN, true);
            throw new AuthenticationException();
        }
        if (!$remoteHashedPassword) {
            throw new Exception('Erreur inconnue');
        }
        try {
            // Comparaison remote hash et hash du input password + salt
            $this->passwordHasher->verify($remoteHashedPassword, $plaintextPassword, $remoteSalt);
            $attributes = $this->sqlLoginService->fetchDatas($login);
            $user = new User($login, $remoteHashedPassword, $attributes, $rememberMe);

            $loader = function (string $userIdentifier) use ($user) {
                return $user->getLogin() == $userIdentifier ? $user : null;
            };
            $passport = new SelfValidatingPassport(new UserBadge($login, $loader));
            if ($rememberMe) {
                $passport->addBadge(new RememberMeBadge());
            }
            $passport->setAttribute('attributes', $user->getAttributes());

            return $passport;
        } catch (InvalidSQLPasswordException $e) {
            $session->set(self::ERROR_LOGIN, true);
            throw new AuthenticationException();
        } catch (DataToFetchConfigurationException $e) {
            $session->set(self::ERROR_DATA_TO_FETCH_CONFIGURATION, true);
            throw new AuthenticationException();
        } catch (DatabaseConnectionException $e) {
            $session->set(self::ERROR_PDO, true);
            throw new AuthenticationException();
        } catch (SecurityPatternConfigurationException $e) {
            $session->set(self::ERROR_SECURITY_PATTERN_CONFIGURATION, true);
            throw new AuthenticationException();
        }
    }

    protected function getLoginUrl(Request $request): string
    {
        return $this->baseUrl . '/login';
    }
}