using CefSharp;
using CefSharp.WinForms;
using NLog;
using POSV.Cef.Client.Properties;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace POSV.Cef.Client.ClientComm
{
    public delegate void LoadingStateChanged(bool IsLoadStatus,string Message);
    public class CefUnifyBrowser
    {
        public CefUnifyBrowser(object _form)
        {
            this.InitializedCef();
            this.m_webBrowser = new ChromiumWebBrowser(""); 
            this.m_webBrowser.RegisterJsObject("_form", _form , false);
            this.m_webBrowser.Dock = DockStyle.Fill;
            this.m_webBrowser.LoadingStateChanged += M_webBrowser_LoadingStateChanged;
            this.m_webBrowser.LoadError += M_webBrowser_LoadError;
            this.m_form = _form as Control;
            this.m_form.Controls.Add(m_webBrowser);
         
            this.m_webBrowser.Show();
            this.logger = LogManager.GetLogger(this.GetType().FullName + "【CEF操作类】");
        }

        



        //================== 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;
          
        /// <summary>
        /// 加载消息
        /// </summary>
        public string Message = string.Empty;

        public LoadingStateChanged LoadingStateEvent;
        #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(string Url)
        {
            this.m_webBrowser.Load(Url);
        }
        #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)
        {
            this.logger.Info("CEF操作：" + name + "数据" + data);
            var _name = string.Format("{0}('{1}')", name, data);
            this.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()
        {

            try
            {
                if (m_webBrowser.IsBrowserInitialized)
                {
                    this.m_webBrowser.ShowDevTools(); 
                }

            }
            catch
            {

            }
        }
        #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);
            this.logger.Info("关闭cef");
        }
        #endregion

        #region Back 后退，保留界面状态
        public void BackForm() 
        {
            this.m_webBrowser.Back();
        }
        #endregion

        #region Reload
        public void Reload()
        {
            this.m_webBrowser.Reload();
        }
        #endregion

        #region ForwardForm前进，用户表单填写完后不依然保存
        public void ForwardForm()
        {
            this.m_webBrowser.Forward();
        }
        #endregion

        //================== private function =======================

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

        private void M_webBrowser_LoadError(object sender, LoadErrorEventArgs e)
        { 
            logger.Info(string.Format("界面加载失败！\t\n ErrorCode:" + e.ErrorCode + "\t\n ErrorText:" + e.ErrorText + "\t\n FailedUrl:" + e.FailedUrl));
        }

        private void InitializedCef()
        {
            if (!CefSharp.Cef.IsInitialized)
            {
                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);
                 
            }
        }
    }
}