using Foundation;
using System;
using WebKit;

namespace Shared
{
    /// <summary>
    /// MyEchartsViewOn HDLON+
    /// </summary>
    public class MyEchartsViewOn : View
    {
        //EchartRootJson jsonData = new EchartRootJson() { };

        /// <summary>
        ///  option的配置json
        /// </summary>
        string optionJsonString;

        /// <summary>
        /// WKWebView控件
        /// </summary>
        WKWebView uIWebView;

        /// <summary>
        /// 
        /// </summary>
        public MyEchartsViewOn()
        {
            //jsonData = new EchartRootJson();
            //默认布局，宽高为0的话会异常
            var mFrame = new CoreGraphics.CGRect(base.X, base.Y, 10, 10);
            uIWebView = new WKWebView(mFrame, new WKWebViewConfiguration()) { };
            uiView = uIWebView;
            uIWebView.ScrollView.Bounces = false;
            uIWebView.ScrollView.ScrollEnabled = false;
            uIWebView.NavigationDelegate = new OnWKNavigationDelegate(this);
            //var filePath = NSBundle.MainBundle.PathForResource("echarts", "html");
            var filePath = NSBundle.MainBundle.PathForResource("echartsNew", "html");

            var url = new NSUrl(filePath, false);
            uIWebView.LoadFileUrl(url, url);
        }

        /// <summary>
        /// 加载本地HTML
        /// </summary>
        public void LoadFileUrl()
        {
            var filePath = NSBundle.MainBundle.PathForResource(htmlPathName, "html");
            var url = new NSUrl(filePath, false);
            uIWebView.LoadFileUrl(url, url);
        }

        /// <summary>
        /// 
        /// </summary>
        string htmlPathName = "echarts";
        public string HtmlPathName
        {
            get
            {
                return htmlPathName;
            }
            set
            {
                htmlPathName = value;
                LoadFileUrl();
            }
        }

        /// <summary>
        /// 是否采用LoadEchartsNew的方式
        /// </summary>
        bool IsLoadEchartsNew = false;
        /// <summary>
        /// 加载Option配置参数
        /// 刷新图表
        /// </summary>
        /// <param name="option"></param>
        public void ShowWithOption(string option)
        {
            IsLoadEchartsNew = true;
            optionJsonString = option;
            EvaluateJavascript();
        }

        /// <summary>
        /// 加载Option配置jsonString
        /// </summary>
        /// <param name="jsonString"></param>
        public void ShowWithOptionJsonString(string jsonString)
        {
            IsLoadEchartsNew = false;
            optionJsonString = jsonString;
            EvaluateJavascript();
        }

        /// <summary>
        /// EvaluateJavascript
        /// </summary>
        public void EvaluateJavascript()
        {
            WKJavascriptEvaluationResult handler = (NSObject result, NSError err) =>
            {
                if (err != null)
                {
                    HDLUtils.WriteLine("EvaluateJavascript:" + err);
                }
                if (result != null)
                {
                    HDLUtils.WriteLine("EvaluateJavascript:" + result);
                }
            };
            //是否调用loadEchartsNew
            if (IsLoadEchartsNew)
            {
                uIWebView.EvaluateJavaScript($"loadEchartsNew({optionJsonString})", handler);
            }
            else
            {
                uIWebView.EvaluateJavaScript($"loadEcharts({optionJsonString})", handler);
            }
        }

        /// <summary>
        /// OnWKNavigationDelegate
        /// </summary>
        public class OnWKNavigationDelegate : WKNavigationDelegate
        {
            [Weak] MyEchartsViewOn _MyEchartsViewOn;

            public OnWKNavigationDelegate(MyEchartsViewOn view)
            {
                _MyEchartsViewOn = view;
            }

            public override void DidFinishNavigation(WKWebView webView, WKNavigation navigation)
            {
                Console.WriteLine("WKWebView DidFinishNavigation");
                _MyEchartsViewOn.EvaluateJavascript();
            }
        }

    }

}