// (C) Copyright 2015 Moodle Pty Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import { Injectable } from '@angular/core';

import { AddonModQuizAccessRuleHandler } from '@addons/mod/quiz/services/access-rules-delegate';
import { makeSingleton } from '@singletons';

/**
 * Handler to support safe address access rule.
 */
@Injectable({ providedIn: 'root' })
export class AddonModQuizAccessSafeBrowserHandlerService implements AddonModQuizAccessRuleHandler {

    name = 'AddonModQuizAccessSafeBrowser';
    ruleName = 'quizaccess_safebrowser';

    /**
     * Whether or not the handler is enabled on a site level.
     *
     * @return True or promise resolved with true if enabled.
     */
    async isEnabled(): Promise<boolean> {
        return true;
    }

    /**
     * Whether the rule requires a preflight check when prefetch/start/continue an attempt.
     *
     * @param quiz The quiz the rule belongs to.
     * @param attempt The attempt started/continued. If not supplied, user is starting a new attempt.
     * @param prefetch Whether the user is prefetching the quiz.
     * @param siteId Site ID. If not defined, current site.
     * @return Whether the rule requires a preflight check.
     */
    isPreflightCheckRequired(): boolean | Promise<boolean> {
        return false;
    }

}

export class AddonModQuizAccessSafeBrowserHandler extends makeSingleton(AddonModQuizAccessSafeBrowserHandlerService) {}