apprepodbmgr/apprepodbmgr.Core/PluginBase.cs

// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename       : PluginBase.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Core algorithms.
//
// --[ Description ] ----------------------------------------------------------
//
//     Class to hold all installed plugins.
//
// --[ License ] --------------------------------------------------------------
//
//     This program 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 3 of the
//     License, or (at your option) any later version.
//
//     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 for more details.
//
//     You should have received a copy of the GNU General Public License
//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2018 Natalia Portillo
// ****************************************************************************/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using DiscImageChef.DiscImages;
using DiscImageChef.Filesystems;
using DiscImageChef.Partitions;

namespace apprepodbmgr.Core
{
    /// <summary>Contain all plugins (filesystem, partition and image)</summary>
    public class PluginBase
    {
        /// <summary>List of all media image plugins</summary>
        public readonly SortedDictionary<string, IMediaImage> ImagePluginsList;
        /// <summary>List of all partition plugins</summary>
        public readonly SortedDictionary<string, IPartition> PartPluginsList;
        /// <summary>List of all filesystem plugins</summary>
        public readonly SortedDictionary<string, IFilesystem> PluginsList;
        /// <summary>List of read-only filesystem plugins</summary>
        public readonly SortedDictionary<string, IReadOnlyFilesystem> ReadOnlyFilesystems;
        /// <summary>List of writable media image plugins</summary>
        public readonly SortedDictionary<string, IWritableImage> WritableImages;

        /// <summary>Initializes the plugins lists</summary>
        public PluginBase()
        {
            PluginsList         = new SortedDictionary<string, IFilesystem>();
            ReadOnlyFilesystems = new SortedDictionary<string, IReadOnlyFilesystem>();
            PartPluginsList     = new SortedDictionary<string, IPartition>();
            ImagePluginsList    = new SortedDictionary<string, IMediaImage>();
            WritableImages      = new SortedDictionary<string, IWritableImage>();

            var assembly = Assembly.GetAssembly(typeof(IMediaImage));

            foreach(Type type in assembly.GetTypes().Where(t => t.GetInterfaces().Contains(typeof(IMediaImage))).
                                          Where(t => t.IsClass))
                try
                {
                    var plugin = (IMediaImage)type.GetConstructor(Type.EmptyTypes)?.Invoke(new object[]
                        {});

                    RegisterImagePlugin(plugin);
                }
                catch(Exception exception)
                {
                    Console.WriteLine("Exception {0}", exception);
                }

            assembly = Assembly.GetAssembly(typeof(IPartition));

            foreach(Type type in assembly.GetTypes().Where(t => t.GetInterfaces().Contains(typeof(IPartition))).
                                          Where(t => t.IsClass))
                try
                {
                    var plugin = (IPartition)type.GetConstructor(Type.EmptyTypes)?.Invoke(new object[]
                        {});

                    RegisterPartPlugin(plugin);
                }
                catch(Exception exception)
                {
                    Console.WriteLine("Exception {0}", exception);
                }

            assembly = Assembly.GetAssembly(typeof(IFilesystem));

            foreach(Type type in assembly.GetTypes().Where(t => t.GetInterfaces().Contains(typeof(IFilesystem))).
                                          Where(t => t.IsClass))
                try
                {
                    var plugin = (IFilesystem)type.GetConstructor(Type.EmptyTypes)?.Invoke(new object[]
                        {});

                    RegisterPlugin(plugin);
                }
                catch(Exception exception)
                {
                    Console.WriteLine("Exception {0}", exception);
                }

            assembly = Assembly.GetAssembly(typeof(IReadOnlyFilesystem));

            foreach(Type type in assembly.GetTypes().
                                          Where(t => t.GetInterfaces().Contains(typeof(IReadOnlyFilesystem))).
                                          Where(t => t.IsClass))
                try
                {
                    var plugin = (IReadOnlyFilesystem)type.GetConstructor(Type.EmptyTypes)?.Invoke(new object[]
                        {});

                    RegisterReadOnlyFilesystem(plugin);
                }
                catch(Exception exception)
                {
                    Console.WriteLine("Exception {0}", exception);
                }

            assembly = Assembly.GetAssembly(typeof(IWritableImage));

            foreach(Type type in assembly.GetTypes().Where(t => t.GetInterfaces().Contains(typeof(IWritableImage))).
                                          Where(t => t.IsClass))
                try
                {
                    var plugin = (IWritableImage)type.GetConstructor(Type.EmptyTypes)?.Invoke(new object[]
                        {});

                    RegisterWritableMedia(plugin);
                }
                catch(Exception exception)
                {
                    Console.WriteLine("Exception {0}", exception);
                }
        }

        void RegisterImagePlugin(IMediaImage plugin)
        {
            if(!ImagePluginsList.ContainsKey(plugin.Name.ToLower()))
                ImagePluginsList.Add(plugin.Name.ToLower(), plugin);
        }

        void RegisterPlugin(IFilesystem plugin)
        {
            if(!PluginsList.ContainsKey(plugin.Name.ToLower()))
                PluginsList.Add(plugin.Name.ToLower(), plugin);
        }

        void RegisterReadOnlyFilesystem(IReadOnlyFilesystem plugin)
        {
            if(!ReadOnlyFilesystems.ContainsKey(plugin.Name.ToLower()))
                ReadOnlyFilesystems.Add(plugin.Name.ToLower(), plugin);
        }

        void RegisterWritableMedia(IWritableImage plugin)
        {
            if(!WritableImages.ContainsKey(plugin.Name.ToLower()))
                WritableImages.Add(plugin.Name.ToLower(), plugin);
        }

        void RegisterPartPlugin(IPartition partplugin)
        {
            if(!PartPluginsList.ContainsKey(partplugin.Name.ToLower()))
                PartPluginsList.Add(partplugin.Name.ToLower(), partplugin);
        }
    }
}