using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DbMigrate
{
    internal static class Program
    {
        static Program()
        {
            //设置私有路径
            Environment.CurrentDirectory = AppDomain.CurrentDomain.BaseDirectory;
            AppDomain.CurrentDomain.SetData("PRIVATE_BINPATH", "AddIns;");
            var m = typeof(AppDomainSetup).GetMethod("UpdateContextProperty", BindingFlags.NonPublic | BindingFlags.Static);
            var funsion = typeof(AppDomain).GetMethod("GetFusionContext", BindingFlags.NonPublic | BindingFlags.Instance);
            m.Invoke(null, new object[] { funsion.Invoke(AppDomain.CurrentDomain, null), "PRIVATE_BINPATH", "AddIns;" });

            //c++dll加入环境变量
            if (Directory.Exists("AddIns"))
            {
                string paths = Environment.GetEnvironmentVariable("PATH");
                var dirs = Directory.EnumerateDirectories("AddIns", "*", SearchOption.AllDirectories);
                List<string> list = new List<string>
                {
                    Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "AddIns")
                };
                foreach (var item in dirs)
                {
                    list.Add(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, item));
                }
                Environment.SetEnvironmentVariable("PATH", $"{paths};{string.Join(";", list)}");
            }
            AppDomain.CurrentDomain.UnhandledException += (sender, e) =>
            {
                var ex = e.ExceptionObject as Exception;
                while (ex.InnerException != null)
                    ex = ex.InnerException;
                MessageBox.Show("出现未处理的异常,程序即将退出!");
            };
            Application.ThreadException += (sender, e) =>
            {
                var ex = e.Exception;
                while (ex.InnerException != null)
                    ex = ex.InnerException;
                MessageBox.Show($"出现未处理的线程异常!{e.Exception.Message}");
            };
            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
        }

        private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
        {
            var name = args.Name.Split(',')[0];
            var dll1 = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "AddIns", $"{name}.dll");
            if (File.Exists(dll1))
                return Assembly.Load(dll1);
            var dll2 = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"{name}.dll");
            if (File.Exists(dll2))
                return Assembly.Load(dll2);
            return null;
        }
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}