// Copyright (c) 2004, 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;

namespace MySql.Data.MySqlClient
{
    /// <summary>
    /// Interceptor is the base class for the "manager" classes such as ExceptionInterceptor,
    /// CommandInterceptor, etc
    /// </summary>
    internal abstract class Interceptor
    {
        protected MySqlConnection Connection;

        protected void LoadInterceptors(string interceptorList)
        {
            if (String.IsNullOrEmpty(interceptorList))
            {
                return;
            }

            string[] interceptors = interceptorList.Split('|');
            foreach (string interceptorType in interceptors)
            {
                if (String.IsNullOrEmpty(interceptorType))
                {
                    continue;
                }

                string type = this.ResolveType(interceptorType);
                Type t = Type.GetType(type);
                object interceptorObject = Activator.CreateInstance(t);
                this.AddInterceptor(interceptorObject);
            }
        }

        protected abstract void AddInterceptor(object o);

        protected virtual string ResolveType(string nameOrType)
        {
            return nameOrType;
        }
    }
}