using System;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;

namespace AllBase
{
    /// <summary>
    /// IE清理程序
    /// </summary>
    public static class IECookies
    {
        [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData,
            ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved);

        [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern int InternetSetCookieEx(string lpszURL, string lpszCookieName, string lpszCookieData,
            int dwFlags, IntPtr dwReserved);

        [DllImport("shell32.dll")]
        static extern IntPtr ShellExecute(IntPtr hwnd, string lpOperation, string lpFile, string lpParameters, string lpDirectory, ShowCommands nShowCmd);


        private const int INTERNET_COOKIE_HTTPONLY = 0x00002000;


        [DllImport("wininet.dll", SetLastError = true)]
        private static extern bool InternetGetCookieEx(
            string url,
            string cookieName,
            StringBuilder cookieData,
            ref int size,
            int flags,
            IntPtr pReserved);
        /// <summary>
        /// 获取当前webbrowser 下的cookies
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string GetCookieByWebBrowser(string url)
        {
            int size = 512;
            StringBuilder sb = new StringBuilder(size);
            if (!InternetGetCookieEx(url, null, sb, ref size, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero))
            {
                if (size < 0)
                {
                    return null;
                }
                sb = new StringBuilder(size);
                if (!InternetGetCookieEx(url, null, sb, ref size, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero))
                {
                    return null;
                }
            }
            return sb.ToString();
        }
        /// <summary>
        /// 获取webbrowser UserAgent
        /// </summary>
        /// <returns></returns>
        public static string GetUserAgent()
        {
            WebBrowser wb = new WebBrowser();
            wb.Navigate("about:blank");
            while (wb.IsBusy) Application.DoEvents();
            object window = wb.Document.Window.DomWindow;
            Type wt = window.GetType();
            object navigator = wt.InvokeMember("navigator", BindingFlags.GetProperty, null, window, new object[] { });
            Type nt = navigator.GetType();
            object userAgent = nt.InvokeMember("userAgent", BindingFlags.GetProperty, null, navigator, new object[] { });
            return userAgent.ToString();
        }

        /// <summary>
        /// 用IE打开网页
        /// </summary>
        /// <param name="url"></param>
        public static void OpenUrlByIE(string url)
        {
            Process.Start("iexplore.exe", url);
        }
        /// <summary>
        /// 关闭所有IE浏览器
        /// </summary>
        public static void CloseIE()
        {
            foreach (Process thisproc in Process.GetProcesses())
            {
                if (thisproc.ProcessName.ToLower() == "iexplore")
                    thisproc.Kill();
            }
        }


        /// <summary>
        /// 获取IE下的cookies
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string GetCookies(string url)
        {
            uint datasize = 256;
            StringBuilder cookieData = new StringBuilder((int)datasize);
            if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x2000, IntPtr.Zero))
            {
                if (datasize < 0)
                    return null;
                cookieData = new StringBuilder((int)datasize);
                if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, IntPtr.Zero))
                    return null;
            }
            return cookieData.ToString();
        }
        /// <summary>
        /// 清除IE所有缓存
        /// </summary>
        public static void ClearAll()
        {
            ShellExecute(IntPtr.Zero, "open", "rundll32.exe", " InetCpl.cpl,ClearMyTracksByProcess 8", "", ShowCommands.SW_HIDE);
        }


        public enum ShowCommands : int
        {
            SW_HIDE = 0,
            SW_SHOWNOrmAL = 1,
            SW_NOrmAL = 1,
            SW_SHOWMINIMIZED = 2,
            SW_SHOWMAXIMIZED = 3,
            SW_MAXIMIZE = 3,
            SW_SHOWNOACTIVATE = 4,
            SW_SHOW = 5,
            SW_MINIMIZE = 6,
            SW_SHOWMINNOACTIVE = 7,
            SW_SHOWNA = 8,
            SW_RESTORE = 9,
            SW_SHOWDEFAULT = 10,
            SW_FORCEMINIMIZE = 11,
            SW_MAX = 11
        }
        /// <summary>
        /// 通过注册表获取IE版本
        /// </summary>
        /// <returns></returns>
        public static int GetIeVerson()
        {
            int mainVer = (new WebBrowser()).Version.Major;
            return mainVer;
        }

        /// <summary>
        /// 设置WebBrower IE默认版本
        /// </summary>
        /// <param name="version"></param>
        public static void SetWebBrowerIe(int version)
        {
            int de = 0x1B58;
            if (version == 8)
                de = 0x1F40;
            if (version == 9)
                de = 0x2328;
            if (version == 10)
                de = 0x2710;
            if (version == 11)
                de = 0x2af8;

            bool type = Environment.Is64BitOperatingSystem;//系统是否是64位
            var exeName = Process.GetCurrentProcess().ProcessName + ".exe";
            var hklm = Registry.LocalMachine;
            string key = type
                ? @"SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION"
                : @"SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION";

            try
            {
                var lmRun = hklm.OpenSubKey(key, true);
                if (lmRun == null)
                    return;
                lmRun.SetValue(exeName, de); //设置webbrowser调用IE最高版本内核打开
            }
            catch
            {
            }

        }

    }
}