//
//  ========================================================================
//  Copyright (c) 1995-2019 Mort Bay Consulting Pty. Ltd.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package org.eclipse.jetty.http;

import java.util.Arrays;
import java.util.EnumSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;

import static java.util.Collections.unmodifiableSet;
import static java.util.EnumSet.allOf;
import static java.util.EnumSet.copyOf;
import static java.util.EnumSet.noneOf;

The compliance for Cookie handling.
/**
 * The compliance for Cookie handling.
 */
public class CookieCompliance implements ComplianceViolation.Mode
{
    enum Violation implements ComplianceViolation
    {
        COMMA_NOT_VALID_OCTET("https://tools.ietf.org/html/rfc6265#section-4.1.1", "Comma not valid as cookie-octet or separator"),
        RESERVED_NAMES_NOT_DOLLAR_PREFIXED("https://tools.ietf.org/html/rfc6265#section-4.1.1", "Reserved names no longer use '$' prefix");

        private final String url;
        private final String description;

        Violation(String url, String description)
        {
            this.url = url;
            this.description = description;
        }

        @Override
        public String getName()
        {
            return name();
        }

        @Override
        public String getURL()
        {
            return null;
        }

        @Override
        public String getDescription()
        {
            return null;
        }
    }

    public static final CookieCompliance RFC6265 = new CookieCompliance("RFC6265", noneOf(Violation.class));
    public static final CookieCompliance RFC2965 = new CookieCompliance("RFC2965", allOf(Violation.class));

    private static final List<CookieCompliance> KNOWN_MODES = Arrays.asList(RFC6265, RFC2965);

    public static CookieCompliance valueOf(String name)
    {
        for (CookieCompliance compliance : KNOWN_MODES)
        {
            if (compliance.getName().equals(name))
                return compliance;
        }
        return null;
    }

    private final String _name;
    private final Set<Violation> _violations;

    private CookieCompliance(String name, Set<Violation> violations)
    {
        Objects.nonNull(violations);
        _name = name;
        _violations = unmodifiableSet(copyOf(violations));
    }

    @Override
    public boolean allows(ComplianceViolation violation)
    {
        return _violations.contains(violation);
    }

    @Override
    public String getName()
    {
        return _name;
    }

    @Override
    public Set<Violation> getKnown()
    {
        return EnumSet.allOf(Violation.class);
    }

    @Override
    public Set<Violation> getAllowed()
    {
        return _violations;
    }
}