using System;
using System.IO;
using System.Reflection;
using System.Windows.Forms;
using Cbdx.Tests.CefRelated;

namespace Cbdx.Tests
{
    internal static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        private static void Main()
        {
            RegisterAssemblyResolvePolicy();

            InitReferenceAssembly();

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new TestForm());

            QuitReferenceAssembly();
        }

        private static void RegisterAssemblyResolvePolicy()
        {
            AppDomain.CurrentDomain.AssemblyResolve += OnCurrentDomainOnAssemblyResolve;
        }

        private static void InitReferenceAssembly()
        {
            CefInit.Init();
        }

        private static void QuitReferenceAssembly()
        {
            CefInit.Quit();
        }

        private static Assembly OnCurrentDomainOnAssemblyResolve(object sender, ResolveEventArgs args)
        {
            //1.search in reqAsm dir + arch
            //2.search in reqAsm dir
            //3.search in myAsm dir + arch
            //4.search in myAsm dir

            var asm = LoadFromNear(args1.RequestingAssembly, args1.Name);
            return null == asm
                ? LoadFromNear(Assembly.GetExecutingAssembly(), args1.Name)
                : null;
        }

        private static Assembly LoadFromNear(Assembly reqAsm, string name)
        {
            var arch = Environment.Is64BitProcess ? "x64" : "x86";

            var fileName = new AssemblyName(name).Name;

            string reqAsmDirectory;
            if (false != reqAsm?.GlobalAssemblyCache ||
                string.IsNullOrEmpty(reqAsmDirectory = Path.GetDirectoryName(reqAsm.Location))) return null;

            string pathToLoad;

            //1,3
            if (File.Exists(pathToLoad = Path.Combine(reqAsmDirectory, arch, fileName) + ".dll")
             || File.Exists(pathToLoad = Path.Combine(reqAsmDirectory, arch, fileName) + ".exe"))
            {
                return Assembly.LoadFrom(pathToLoad);
            }

            //2,4
            if (File.Exists(pathToLoad = Path.Combine(reqAsmDirectory, fileName) + ".dll")
             || File.Exists(pathToLoad = Path.Combine(reqAsmDirectory, fileName) + ".exe"))
            {
                return Assembly.LoadFrom(pathToLoad);
            }

            return null;
        }
    }
}