using BPA.Helper;
using BPASmart.Model;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace BPASmart.ConfigurationSoftware
{
    public class FileHelper
    {

        private volatile static FileHelper _Instance;
        public static FileHelper GetInstance => _Instance ?? (_Instance = new FileHelper());
        private FileHelper() { }

        public void RegisterOpenFileType()
        {
            string icoFile = System.Windows.Forms.Application.StartupPath + $"\\fyf.ico";
            string DirectoryPath = $"{Json<ProjectModel>.Data.ProjectPath}\\Images";
            Directory.CreateDirectory(DirectoryPath);
            File.Copy(icoFile, $"{DirectoryPath}\\fyf.ico");
            RegisterFileType(".project", "HBL", ".project", System.Windows.Forms.Application.ExecutablePath, $"{DirectoryPath}\\fyf.ico");
        }

        private void RegisterFileType(string typeName, string fileType, string fileContent, string app, string ico)
        {
            string toolPath = app;//工具启动路径
            string extension = typeName;//fileType = "自定义文件类型";

            //fileContent = "AAAA";
            //获取信息
            RegistryKey registryKey = Registry.ClassesRoot.OpenSubKey(extension);
            if (registryKey != null)
            {
                try
                {
                    RegistryKey _Regkey = Registry.ClassesRoot.OpenSubKey("", true);

                    RegistryKey _VRPkey = _Regkey.OpenSubKey(extension);
                    if (_VRPkey != null) _Regkey.DeleteSubKeyTree(extension, true);
                    if (_VRPkey != null) _Regkey.DeleteSubKeyTree("Exec");
                }
                catch (Exception e)
                {

                }
            }

            if (registryKey != null && registryKey.OpenSubKey("shell") != null && registryKey.OpenSubKey("shell").OpenSubKey("open") != null &&
                registryKey.OpenSubKey("shell").OpenSubKey("open").OpenSubKey("command") != null)
            {
                var varSub = registryKey.OpenSubKey("shell").OpenSubKey("open").OpenSubKey("command");
                var varValue = varSub.GetValue("");

                if (Equals(varValue, toolPath + " \"%1\""))
                {
                    return;
                }
            }

            //文件注册
            registryKey = Registry.ClassesRoot.CreateSubKey(extension);
            registryKey.SetValue("", fileType);
            registryKey.SetValue("Content Type", fileContent);
            //设置默认图标
            RegistryKey iconKey = registryKey.CreateSubKey("DefaultIcon");
            //iconKey.SetValue("", Application.StartupPath + $"\\{ico}.ico");
            iconKey.SetValue("", ico);
            iconKey.Close();
            //设置默认打开程序路径
            registryKey = registryKey.CreateSubKey("shell\\open\\command");
            registryKey.SetValue("", toolPath + " \"%1\"");
            //关闭
            registryKey.Close();
            SHChangeNotify(0x8000000, 0, IntPtr.Zero, IntPtr.Zero);
        }

        [DllImport("shell32.dll")]
        public static extern void SHChangeNotify(uint wEventId, uint uFlags, IntPtr dwItem1, IntPtr dwItem2);
    }

}