<?php

/**
 * webtrees: online genealogy
 * Copyright (C) 2026 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace Fisharebest\Webtrees\Http\RequestHandlers;

use Fisharebest\Webtrees\Contracts\UserInterface;
use Fisharebest\Webtrees\FlashMessages;
use Fisharebest\Webtrees\I18N;
use Fisharebest\Webtrees\Services\UserService;
use Fisharebest\Webtrees\Session;
use Fisharebest\Webtrees\Tree;
use Fisharebest\Webtrees\User;
use Fisharebest\Webtrees\Validator;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;

use function assert;
use function redirect;
use function route;

final class AccountUpdate implements RequestHandlerInterface
{
    public function __construct(
        private readonly UserService $user_service,
    ) {
    }

    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $tree = Validator::attributes($request)->treeOptional();
        $user = Validator::attributes($request)->user();

        assert($user instanceof User);

        $contact_method = Validator::parsedBody($request)->string('contact-method');
        $email          = Validator::parsedBody($request)->string('email');
        $language       = Validator::parsedBody($request)->string('language');
        $real_name      = Validator::parsedBody($request)->string('real_name');
        $password       = Validator::parsedBody($request)->string('password');
        $time_zone      = Validator::parsedBody($request)->string('timezone');
        $username       = Validator::parsedBody($request)->string('user_name');
        $visible_online = Validator::parsedBody($request)->boolean('visible-online', false);

        // Change the password
        if ($password !== '') {
            $user->setPassword($password);
        }

        // Changing the email address - make sure it isn't used by another user.
        if ($user->email() !== $email) {
            $existing = $this->user_service->findByEmail($email);

            if ($existing instanceof User && $existing->id() !== $user->id()) {
                $message = I18N::translate('Duplicate email address. A user with that email already exists.');
                FlashMessages::addMessage($message, 'danger');
            } else {
                $user->setEmail($email);
            }
        }

        // Changing the username - make sure it isn't used by another user
        if ($user->userName() !== $username) {
            $existing = $this->user_service->findByUserName($username);

            if ($existing instanceof User && $existing->id() !== $user->id()) {
                $message = I18N::translate('Duplicate username. A user with that username already exists. Please choose another username.');
                FlashMessages::addMessage($message, 'danger');
            } else {
                $user->setUserName($username);
            }
        }

        $user->setRealName($real_name);
        $user->setPreference(UserInterface::PREF_CONTACT_METHOD, $contact_method);
        $user->setPreference(UserInterface::PREF_LANGUAGE, $language);
        $user->setPreference(UserInterface::PREF_TIME_ZONE, $time_zone);
        $user->setPreference(UserInterface::PREF_IS_VISIBLE_ONLINE, (string) $visible_online);

        if ($tree instanceof Tree) {
            $default_xref = Validator::parsedBody($request)->string('default-xref');
            $tree->setUserPreference($user, UserInterface::PREF_TREE_DEFAULT_XREF, $default_xref);
        }

        // Switch to the new language now
        Session::put('language', $language);

        FlashMessages::addMessage(I18N::translate('The details for “%s” have been updated.', e($user->userName())), 'success');

        return redirect(route(HomePage::class, ['tree' => $tree?->name()]));
    }
}
