using System.Reflection;
using System.Runtime.Loader;
using System.IO;
using Microsoft.Extensions.DependencyModel;

namespace DS.Module.Core.Reflection;

public static class AssemblyHelper
    {
        private static Assembly[] GetAllAssemblies()
        {
            string[] filters =
             {
                "mscorlib",
                "netstandard",
                "dotnet",
                "api-ms-win-core",
                "runtime.",
                "System",
                "Microsoft",
                "Window",
            };

            DependencyContext context = DependencyContext.Default;
            List<string> names = new List<string>();
            foreach (CompilationLibrary library in context.CompileLibraries)
            {
                string name = library.Name;
                if (filters.Any(name.StartsWith))
                {
                    continue;
                }

                if (!names.Contains(name))
                {
                    names.Add(name);
                }
            }
            return LoadFiles(names);
        }

        private static Assembly[] LoadFiles(IEnumerable<string> files)
        {
            List<Assembly> assemblies = new List<Assembly>();
            foreach (string file in files)
            {
                AssemblyName name = new AssemblyName(file);
                try
                {
                    assemblies.Add(Assembly.Load(name));
                }
                catch (FileNotFoundException)
                { }
            }
            return assemblies.ToArray();
        } 

        public static Assembly[] FindAllItems()
        {
            return GetAllAssemblies().ToArray();
        }
        /// <summary>
        /// 根据程序集名字得到程序集
        /// </summary>
        /// <param name="assemblyNames"></param>
        /// <returns></returns>

        public static IEnumerable<Assembly> GetAssembliesByName(params string[] assemblyNames)
        {
            var basePath = Microsoft.DotNet.PlatformAbstractions.ApplicationEnvironment.ApplicationBasePath; //获取项目路径
            return assemblyNames.Select(o => AssemblyLoadContext.Default.LoadFromAssemblyPath(Path.Combine(basePath, $"{o}.dll")));
        }
    }