/*
* Copyright (c) 2024 Vaughn Nugent
* 
* Library: VNLib
* Package: VNLib.Plugins
* File: IPlugin.cs 
*
* IPlugin.cs is part of VNLib.Plugins which is part of the larger 
* VNLib collection of libraries and utilities.
*
* VNLib.Plugins is free software: you can redistribute it and/or modify 
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 2 of the License,
* or (at your option) any later version.
*
* VNLib.Plugins 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 for more details.
*
* You should have received a copy of the GNU General Public License 
* along with VNLib.Plugins. If not, see http://www.gnu.org/licenses/.
*/

namespace VNLib.Plugins
{
    /// <summary>
    /// Allows for applications to define plugin capabilities
    /// </summary>
    public interface IPlugin
    {
        /// <summary>
        /// The name of the plugin to referrence (may be used by the host to interact)
        /// </summary>
        string PluginName { get; }

        /// <summary>
        /// Performs operations to prepare the plugin for use
        /// </summary>
        void Load();

        /// <summary>
        /// Invoked when the plugin is unloaded from the runtime
        /// </summary>
        void Unload();

        /// <summary>
        /// Called directly after the plugin is loaded to allow for service 
        /// publishing for the host application to use
        /// <para>
        /// NOTE: A service pool is shared for each assembly, if there are multiple
        /// plugins per assembly, they will share the same service pool.
        /// </para>
        /// </summary>
        /// <param name="pool">The service publisher instance</param>
        void PublishServices(IPluginServicePool pool);
    }
}