<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Http\Requests\Auth\LoginRequest;
use App\Models\User;
use App\Services\Auth\SecurityEventRecorder;
use App\Services\Auth\TwoFactorChallenge;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Str;
use Illuminate\Validation\ValidationException;
use Inertia\Inertia;
use Inertia\Response;
use RuntimeException;

class LoginController extends Controller
{
    /**
     * Display the login view.
     */
    public function create(): Response
    {
        return Inertia::render('Auth/Login');
    }

    /**
     * Handle an incoming authentication request.
     */
    public function store(
        LoginRequest $request,
        TwoFactorChallenge $twoFactor,
        SecurityEventRecorder $securityEvents
    ): RedirectResponse {
        $login = $request->validated('login');
        $password = $request->validated('password');

        $isEmail = filter_var($login, FILTER_VALIDATE_EMAIL);
        $email = $isEmail
            ? $login
            : User::whereRaw('LOWER(username) = ?', [strtolower($login)])->value('email');
        $credentials = ['email' => $email, 'password' => $password];

        $remember = config('auth-ui.features.remember_me')
            ? $request->boolean('remember')
            : false;

        $provider = Auth::getProvider();
        $user = $credentials['email']
            ? $provider->retrieveByCredentials($credentials)
            : null;

        try {
            $credentialsAreValid = $user
                ? $provider->validateCredentials($user, $credentials)
                : Hash::check($password, $this->dummyPasswordHash());
        } catch (RuntimeException) {
            $credentialsAreValid = false;
        }

        if (! $user || ! $credentialsAreValid) {
            $securityEvents->record('login.password_failed', $user, $request, [
                'login_hash' => hash('sha256', strtolower($login)),
            ]);

            throw ValidationException::withMessages([
                'login' => __('auth.failed'),
            ]);
        }

        if (config('hashing.rehash_on_login', true)
            && method_exists($provider, 'rehashPasswordIfRequired')) {
            $provider->rehashPasswordIfRequired($user, $credentials);
        }

        if ($twoFactor->requiredFor($user)) {
            $securityEvents->record('login.password_succeeded_pending_two_factor', $user, $request);

            return $twoFactor->begin($request, $user, $remember);
        }

        Auth::login($user, $remember);
        $request->session()->regenerate();
        $securityEvents->record('login.succeeded', $user, $request);

        if ($twoFactor->enrollmentRequiredFor($user)) {
            $request->session()->put(
                'url.intended',
                config('auth-ui.redirects.login', '/')
            );

            return redirect()->route('two-factor.setup');
        }

        return redirect()->intended(config('auth-ui.redirects.login', '/'));
    }

    /**
     * Destroy an authenticated session.
     */
    public function destroy(Request $request): RedirectResponse
    {
        /** @var User|null $user */
        $user = $request->user();
        app(SecurityEventRecorder::class)->record('logout.succeeded', $user, $request);

        Auth::logout();

        $request->session()->invalidate();
        $request->session()->regenerateToken();

        return redirect(config('auth-ui.redirects.logout', '/'));
    }

    private function dummyPasswordHash(): string
    {
        static $hash;

        return $hash ??= Hash::make(Str::random(64));
    }
}