ildar-shaymukhametov_grandnode-refactorings/Grand.Core/Plugins/PluginDescriptor.cs
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;

namespace Grand.Core.Plugins
{
    public class PluginDescriptor : IDescriptor
    {
        public PluginDescriptor()
        {
            SupportedVersions = new List<string>();
            LimitedToStores = new List<string>();
        }

        public PluginDescriptor(Assembly referencedAssembly, FileInfo originalAssemblyFile,
            Type pluginType)
            : this()
        {
            ReferencedAssembly = referencedAssembly;
            OriginalAssemblyFile = originalAssemblyFile;
            PluginType = pluginType;
        }
        /// <summary>
        /// Plugin type
        /// </summary>
        public virtual string PluginFileName { get; set; }

        /// <summary>
        /// Plugin type
        /// </summary>
        public virtual Type PluginType { get; set; }

        /// <summary>
        /// The assembly that has been shadow copied that is active in the application
        /// </summary>
        public virtual Assembly ReferencedAssembly { get; internal set; }

        /// <summary>
        /// The original assembly file that a shadow copy was made from it
        /// </summary>
        public virtual FileInfo OriginalAssemblyFile { get; internal set; }

        /// <summary>
        /// Gets or sets the plugin group
        /// </summary>
        public virtual string Group { get; set; }

        /// <summary>
        /// Gets or sets the friendly name
        /// </summary>
        public virtual string FriendlyName { get; set; }

        /// <summary>
        /// Gets or sets the system name
        /// </summary>
        public virtual string SystemName { get; set; }

        /// <summary>
        /// Gets or sets the version
        /// </summary>
        public virtual string Version { get; set; }

        /// <summary>
        /// Gets or sets the supported versions 
        /// </summary>
        public virtual IList<string> SupportedVersions { get; set; }

        /// <summary>
        /// Gets or sets the author
        /// </summary>
        public virtual string Author { get; set; }

        /// <summary>
        /// Gets or sets the display order
        /// </summary>
        public virtual int DisplayOrder { get; set; }

        /// <summary>
        /// Gets or sets the list of store identifiers in which this plugin is available. If empty, then this plugin is available in all stores
        /// </summary>
        public virtual IList<string> LimitedToStores { get; set; }

        /// <summary>
        /// Gets or sets the value indicating whether plugin is installed
        /// </summary>
        public virtual bool Installed { get; set; }

        public virtual T Instance<T>(IServiceProvider serviceProvider) where T : class, IPlugin
        {
            object instance;
            try
            {
                instance = serviceProvider.GetRequiredService(PluginType);
            }
            catch
            {
                throw new GrandException($"Plugin has not been registered getRequiredService - dependency - {PluginType.FullName}");
            }
            var typedInstance = instance as T;
            if (typedInstance != null)
                typedInstance.PluginDescriptor = this;
            return typedInstance;
        }

        public IPlugin Instance(IServiceProvider serviceProvider)
        {
            return Instance<IPlugin>(serviceProvider);
        }

        public override string ToString()
        {
            return FriendlyName;
        }

    }
}
