using SqlSugar;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Loader;
using System.Text;
using System.Threading.Tasks;

namespace CoreCms.Net.Utility.Helper
{
    /// <summary>
    /// 属性常用方法
    /// </summary>
    public class AssemblyHelper
    {

        private static List<Assembly>? _allAssemblies = null;
        /// <summary>
        /// 获取所有程序目录下和常用的程序集 包括一些系统引用程序集
        /// </summary>
        /// <returns> 当前工程下的程序集</returns>
        public static List<Assembly> GetAllAssembly()
        {


            if (_allAssemblies == null)
            {
                _allAssemblies = new List<Assembly>();
                string? path = null;
                string singlefile = null;
                try
                {
                    path = Assembly.GetEntryAssembly()?.Location;
                }
                catch { }
                if (string.IsNullOrEmpty(path))
                {
                    singlefile = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
                    path = Path.GetDirectoryName(singlefile);
                }
                if (string.IsNullOrEmpty(path))

                    throw new Exception("获取程序目录出错");
                var dir = new DirectoryInfo(Path.GetDirectoryName(path) ?? "");

                var dlls = dir.GetFiles("*.dll", SearchOption.TopDirectoryOnly);
                string[] systemdll = new string[]
                {
                "Microsoft.",
                "System.",
                "Swashbuckle.",
                "ICSharpCode",
                "Newtonsoft.",
                "Oracle.",
                "Pomelo.",
                "SQLitePCLRaw.",
                "Aliyun.OSS",
                "BouncyCastle.",
                "FreeSql.",
                "Google.Protobuf.dll",
                "Humanizer.dll",
                "IdleBus.dll",
                "K4os.",
                "MySql.Data.",
                "Npgsql.",
                "NPOI.",
                "netstandard",
                "MySqlConnector",
                "VueCliMiddleware"
                };

                var filtered = dlls.Where(x => systemdll.Any(y => x.Name.StartsWith(y)) == false);
                foreach (var dll in filtered)
                {
                    try
                    {
                        AssemblyLoadContext.Default.LoadFromAssemblyPath(dll.FullName);
                    }
                    catch
                    {
                    }
                }
                var dlllist = AssemblyLoadContext.Default.Assemblies.Where(x => systemdll.Any(y => x.FullName.StartsWith(y)) == false).ToList();
                _allAssemblies.AddRange(dlllist);
            }
            return _allAssemblies;
        }


 
        /// 获取需要更新或者是创建的 数据库表模型List
        /// </summary>
        /// <typeparam name="T">继承表某个表的所有</typeparam>
        /// <param name="ModeProjectName"></param>
        /// <param name="ModeNamespace"></param>
        /// <param name="ConfigId"></param>
        /// <returns></returns>
        public static Type[] DbCodeFirstModes (string ModeProjectName, string ModeNamespace = null, string ConfigId = null , Type subClass= null, Type thisAttribute=null) 
        {

         
#nullable enable
            Type[]? types = GetAllAssembly().Where(x => x.FullName.Contains(ModeProjectName + ",")).FirstOrDefault()?.GetTypes().WhereIF(!string.IsNullOrEmpty(ModeNamespace), name => name.FullName.Contains(ModeNamespace + ".")).ToArray()
                .WhereIF(subClass!=null, x => x.IsSubclassOf(subClass)).ToArray()
                .WhereIF(thisAttribute!=null,x =>( x.GetCustomAttributes(thisAttribute,true).Length>0)).ToArray();

            return types;

        }
    }
}