<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM – Open Source CRM application.
 * Copyright (C) 2014-2026 EspoCRM, Inc.
 * Website: https://www.espocrm.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
 ************************************************************************/

namespace Espo\Tools\OAuthServer;

use Espo\Core\Acl\Scope;
use Espo\Core\Exceptions\Error;
use Espo\Core\Exceptions\NotFound;
use Espo\Core\Utils\Config\ApplicationConfig;
use Espo\Core\Utils\Language;
use Espo\Entities\User;
use Espo\Tools\OAuthServer\Entities\Client;
use Espo\Tools\OAuthServer\League\AuthorizationRequestStorage;
use Espo\Tools\OAuthServer\Repository\ClientRepository;
use Espo\Tools\OAuthServer\Scope\ScopeSorter;
use Espo\Tools\OAuthServer\Scope\UserAvailableScopesFilter;
use InvalidArgumentException;
use stdClass;

class ConsentDataService
{
    public function __construct(
        private ClientRepository $clientRepository,
        private User $user,
        private Language $language,
        private ApplicationConfig $applicationConfig,
        private AuthorizationRequestStorage $authorizationRequestStorage,
        private UserAvailableScopesFilter $userAvailableScopesFilter,
        private ScopeSorter $scopeSorter,
    ) {}

    /**
     * @throws NotFound
     * @throws Error
     */
    public function getData(string $clientId): stdClass
    {
        $client = $this->getClient($clientId);

        return (object) [
            'scopeDataList' => $this->getScopeDataList($client),
            'labels' => (object) [
                'allow' => $this->language->translateLabel('allow', 'strings', Client::ENTITY_TYPE),
                'cancel' => $this->language->translateLabel('Cancel'),
                'info' => $this->composeInfoText($client),
            ],
        ];
    }

    /**
     * @throws NotFound
     */
    private function getClient(string $clientId): Entities\Client
    {
        $client = $this->clientRepository->getActiveByIdentifier($clientId);

        if (!$client) {
            throw new NotFound("Client not found.");
        }

        return $client;
    }

    private function translateScope(string $scope): string
    {
        $appScope = $scope;
        $actionLabel = null;

        if (str_contains($scope, ':')) {
            [$appScope, $action] = explode(':', $appScope, 2);

            $actionLabel = $this->language->translateOption($action, 'levelList', 'Role');
        }

        $scopeLabel = $this->language->translateLabel($appScope, 'scopeNames');

        $label = $scopeLabel;

        if ($actionLabel) {
            $label .= ' . ' . $actionLabel;
        }

        return $label;
    }

    private function composeInfoText(Client $client): string
    {
        return strtr($this->language->translateLabel('allowAccessInfo', 'messages', Client::ENTITY_TYPE), [
            '{clientName}' => $client->getName(),
            '{applicationName}' => $this->applicationConfig->getApplicationName(),
            '{username}' => $this->user->getUserName(),
        ]);
    }

    /**
     * @return stdClass[]
     * @throws Error
     */
    private function getScopeDataList(Client $client): array
    {
        $clientId = $client->getIdentifier() ?? throw new InvalidArgumentException("No client identifier.");

        $request = $this->authorizationRequestStorage->get($clientId);

        if (!$request) {
            throw new Error("No session data.");
        }

        $scopes = array_map(fn ($it) => $it->getIdentifier(), $request->getScopes());

        $scopes = $this->userAvailableScopesFilter->filter($this->user->getId(), $scopes);

        /** @var (stdClass & object{name: string, label: string})[] $scopeDataList */
        $scopeDataList = array_map(function ($scope) {
            return (object) [
                'name' => $scope,
                'label' => $this->translateScope($scope),
                'description' => $this->getScopeDescription($scope),
            ];
        }, $scopes);

        return $this->scopeSorter->sortDataItems($scopeDataList);
    }

    private function getScopeDescription(string $scope): ?string
    {
        if (!in_array($scope, [Scope::ADMIN, Scope::GLOBAL])) {
            return null;
        }

        $key = $scope;

        if ($scope === Scope::GLOBAL && $this->user->isAdmin()) {
            $key = 'GlobalAdmin';
        }

        return $this->language->translateLabel($key, 'scopeDescriptions', Client::ENTITY_TYPE);
    }
}