<?php

namespace App\Security;

use App\Entity\User;
use App\Security\Hasher\PasswordEncoder;
use App\Service\SQLLoginService;
use App\SQLLogin\Exception\DataToFetchConfigurationException;
use App\SQLLogin\Exception\EmptyResultException;
use App\SQLLogin\Exception\InvalidSQLPasswordException;
use App\SQLLogin\Exception\SecurityPatternConfigurationException;
use App\SQLLogin\SQLLoginRequest;
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\Exception\UserNotFoundException;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Http\Authenticator\AbstractLoginFormAuthenticator;
use Symfony\Component\Security\Http\Authenticator\Passport\Badge\UserBadge;
use Symfony\Component\Security\Http\Authenticator\Passport\SelfValidatingPassport;
use Symfony\Component\Security\Http\SecurityRequestAttributes;

class SQLLoginUserAuthenticator extends AbstractLoginFormAuthenticator
{
    public const LOGIN_ROUTE = 'app_login';
    public const ERROR_LOGIN = 'error_login';
    public const TECHNICAL_ERROR = 'technical_error';

    public function __construct(
        private readonly string $baseUrl,
        private readonly SQLLoginService $sqlLoginService,
        private readonly PasswordEncoder $passwordHasher,
        private readonly SQLLoginRequest $sqlLoginRequest
    ){
    }

    /**
     * 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(SecurityRequestAttributes::AUTHENTICATION_ERROR, $exception);

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

    public function authenticate(Request $request): SelfValidatingPassport
    {
        $form = $request->request->all(key: 'login');
        $login = $form['login'];
        $plaintextPassword = $form['password'];
        $session = $request->getSession();
        try {
            $datas = $this->sqlLoginService->fetchPasswordAndDatas($login);
        } catch (EmptyResultException $e) {
            $session->set(self::ERROR_LOGIN, true);
            throw new AuthenticationException();
        } catch (DataToFetchConfigurationException|\PDOException $e) {
            \Sentry\captureException($e);
            $session->set(self::TECHNICAL_ERROR, true);
            throw new AuthenticationException();
        }
        $remoteHashedPassword = $datas[$this->sqlLoginRequest->getPasswordColumnName()];
        unset($datas[$this->sqlLoginRequest->getPasswordColumnName()]);
        $remoteSalt = null;
        if ($this->sqlLoginRequest->getSaltColumnName() && isset($datas[$this->sqlLoginRequest->getSaltColumnName()])) {
            $remoteSalt = $datas[$this->sqlLoginRequest->getSaltColumnName()];
            unset($datas[$this->sqlLoginRequest->getSaltColumnName()]);
        }
        if (null === $remoteHashedPassword) {
            $remoteHashedPassword = '';
        }
        try {
            // Comparaison remote hash et hash du input password + salt
            $this->passwordHasher->verify($remoteHashedPassword, $plaintextPassword, $remoteSalt);
        } catch (InvalidSQLPasswordException $e) {
            $session->set(self::ERROR_LOGIN, true);
            throw new AuthenticationException();
        } catch (SecurityPatternConfigurationException $e) {
            \Sentry\captureException($e);
            $session->set(self::TECHNICAL_ERROR, true);
            throw new AuthenticationException();
        }

        $user = new User($login, $remoteHashedPassword, $datas);

        $loader = function (string $userIdentifier) use ($user): UserInterface {
            if ($user->getLogin() !== $userIdentifier) {
                throw new UserNotFoundException(sprintf('User "%s" not found.', $userIdentifier));
            }
        
            return $user;
        };
        
        $passport = new SelfValidatingPassport(new UserBadge($login, $loader));
        $passport->setAttribute('attributes', $user->getAttributes());

        return $passport;
    }

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