using CefSharp;
using CefSharp.WinForms;
using NLog;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Newtonsoft.Json;
namespace POSV.Cef.Client.ClientComm
{

    /// <summary>
    /// cef统一操作类
    /// </summary>
    public class CefClientModule<T>
    {
        //================= construct function ==================
        #region construct function
        public CefClientModule(T _form)
        {
            this.m_form = _form as Control;

            this.logger = LogManager.GetLogger(this.GetType().FullName + "【CEF操作类】");

            this.InitializeCefSettings();

            var Url = this.ModuleFilter(_form);
            m_webBrowser = new ChromiumWebBrowser(Url);
          
            logger.Info("----------------------------------" + _form.ToString());
            m_webBrowser.LoadingStateChanged += M_webBrowser_LoadingStateChanged;
            m_webBrowser.LoadError += M_webBrowser_LoadError;
            m_webBrowser.FrameLoadEnd += M_webBrowser_FrameLoadEnd;
            this.InitializeCefClient();

        }

        private void M_webBrowser_FrameLoadEnd(object sender, FrameLoadEndEventArgs e)
        {
            var s = e.HttpStatusCode;
            var a = e.Url;
            var b = e.Browser.CanGoBack;
            try
            {
                //if (m_webBrowser.IsBrowserInitialized)
                //{
                //    m_webBrowser.ShowDevTools();
                //}
                //else
                //{
                //    // MessageBox.Show("cef内部代码错误 ");
                //}

            }
            catch (Exception ex)
            {
                //  MessageBox.Show("这个是调试代码，调用cef调用窗口时出现异常：\t\n" + e.Message);
            }
        }

        private void M_webBrowser_LoadError(object sender, LoadErrorEventArgs e)
        {
            this.m_Message = e.ErrorText;

            logger.Info("cef加载错误：" + e.ErrorText);
        }
        #endregion



        //================== private fields ===================== 
        #region fields  
        /// <summary>
        /// cef 浏览器组件
        /// </summary>
        private ChromiumWebBrowser m_webBrowser = null;
        /// <summary>
        /// 主窗口
        /// </summary>
        public Control m_form = null;

        /// <summary>
        /// 日志
        /// </summary>
        private Logger logger = null;

        private string m_Message = "";

        public LoadingStateChanged LoadingStateEvent;
        #endregion

        #region Event 
        #endregion



        //================== public function =======================
        #region LoadCef 加载网页  
        /// <summary>
        /// 跳转
        /// </summary> 
        /// <param name="Url">地址</param>
        /// <param name="function">类</param>
        public void LoadCef<B>(string Url, B function)
        {
            logger.Info("初始化cef界面...");

            m_webBrowser.Load(Url);
            // m_webBrowser.RegisterJsObject("net", function, false);
        }
        #endregion

        #region CallbackJsfunction 调用JS函数
        /// <summary>
        /// 调用JS函数
        /// </summary> 
        /// <param name="name">JS方法名</param>
        /// <param name="data">方法参数</param> 
        public void CallbackJsfunction(string name, string data)
        {
            logger.Info("CEF操作：" + name + "数据" + data);
            string _name = string.Empty;
            if (data == null)
            { 
                 _name = string.Format("{0}()", name);
            }
            else
            {
                _name = string.Format("{0}('{1}')", name, data);
            }

            m_webBrowser.GetBrowser().MainFrame.ExecuteJavaScriptAsync(_name);
        }
        #endregion

        #region ShowDevTools 调用窗口 
        /// <summary>
        /// 调用html调用窗口
        /// </summary>
        public void ShowDevTools()
        {
            m_webBrowser.ShowDevTools();
        }
        #endregion

        #region CloseBrowser 关闭Form
        /// <summary>
        /// 关闭Form, 直接关闭窗口会到导致线程不能完全退出
        /// </summary>
        public void CloseBrowser()
        {
            this.m_webBrowser.GetBrowser().CloseBrowser(true);
            logger.Info("关闭cef");
        }
        #endregion



        //================== private function ======================
        #region InitializeCefClient  初始化cef浏览器显示
        private void InitializeCefClient()
        {
            m_webBrowser.Dock = DockStyle.Fill;
            this.m_form.Controls.Add(m_webBrowser);
            m_webBrowser.RegisterJsObject("net", m_form, false);
        }
        #endregion

        #region 初始化 cef
        /// <summary>
        /// 初始化cef
        /// </summary>
        private void InitializeCefSettings()
        {
            var settings = new CefSettings();

            // 在配置类中注册自定义的schemeName与其对应的工厂类
            settings.RegisterScheme(
                new CefCustomScheme
                {
                    SchemeName = CustomSchemeHandlerFactory.SchemeName,
                    SchemeHandlerFactory = new CustomSchemeHandlerFactory()
                });

            //设置是否使用代理服务
            settings.CefCommandLineArgs.Add("no-proxy-server", "1");
            settings.CefCommandLineArgs.Add("disable-gpu-compositing", "1");
            settings.CefCommandLineArgs.Add("enable-begin-frame-scheduling", "1");
            settings.CefCommandLineArgs.Add("disable-gpu-vsync", "1");
            settings.CefCommandLineArgs.Add("disable-direct-write", "1");

            //初始化 
            CefSharp.Cef.Initialize(settings);

        }

        #endregion


        private string ModuleFilter(T function)
        {
            var _name = function.GetType().Name;
            var _Url = "custom://suibiantian/404.html";
            switch (_name)
            {
                case "FastTemplate":
                    _Url = "custom://suibiantian/FastMain.html";
                    break;
                default:
                    _Url = "custom://suibiantian/404.html";
                    break;
            }

            return _Url;
        }


        private void M_webBrowser_LoadingStateChanged(object sender, LoadingStateChangedEventArgs e)
        {
            if (this.LoadingStateEvent != null)
            {
                this.LoadingStateEvent(e.Browser.IsLoading, m_Message);
            }
        }
    }
}