// Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2.0, as
// published by the Free Software Foundation.
//
// This program is also distributed with certain software (including
// but not limited to OpenSSL) that is licensed under separate terms,
// as designated in a particular file or component or in included license
// documentation.  The authors of MySQL hereby grant you an
// additional permission to link the program and your derivative works
// with the separately licensed software that they have included with
// MySQL.
//
// Without limiting anything contained in the foregoing, this file,
// which is part of MySQL Connector/NET, is also subject to the
// Universal FOSS Exception, version 1.0, a copy of which can be found at
// http://oss.oracle.com/licenses/universal-foss-exception.
//
// 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, version 2.0, for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

using System;
using System.Collections.Generic;

namespace MySql.Data.common
{
    internal class MySqlConnectionStringOptionCollection : Dictionary<string, MySqlConnectionStringOption>
    {
        internal List<MySqlConnectionStringOption> Options { get; }

        internal MySqlConnectionStringOptionCollection() : base(StringComparer.OrdinalIgnoreCase)
        {
            this.Options = new List<MySqlConnectionStringOption>();
        }

        internal void Add(MySqlConnectionStringOption option)
        {
            this.Options.Add(option);

            // Register the option with all the keywords.
            base.Add(option.Keyword, option);
            if (option.Synonyms == null)
            {
                return;
            }

            foreach (string t in option.Synonyms)
            {
                base.Add(t, option);
            }
        }

        internal MySqlConnectionStringOption Get(string keyword)
        {
            MySqlConnectionStringOption option = null;
            base.TryGetValue(keyword, out option);
            return option;
        }

        internal MySqlConnectionStringOptionCollection Clone()
        {
            var instance = new MySqlConnectionStringOptionCollection();
            if (this.Options == null)
            {
                return instance;
            }

            foreach (var option in this.Options)
            {
                instance.Add(option);
            }

            return instance;
        }
    }
}