import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/view_widget/my_appbar.dart';
import 'package:webview_flutter/webview_flutter.dart';

class TreatyPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _TreatyPage();
  }
}

class _TreatyPage extends State<TreatyPage> {
  var controller = new ScrollController();

  WebViewController? _webViewController;

  @override
  void initState() {
    super.initState();
    EasyLoading.show(status: S.current.zhengzaijiazai,maskType: EasyLoadingMaskType.black);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: MyAppBar(
        title:S.of(context).yinsishengming,
        titleColor: Colors.black,
        background: Colors.transparent,
        leadingColor: Colors.black,
      ),
      body:
      Container(
          width: MediaQuery.of(context).size.width,
          height: MediaQuery.of(context).size.height,
          alignment: Alignment.center, //TreatyPage
          child: FutureBuilder(
            future: loadWeb(),
            builder: (context, AsyncSnapshot snapshot) {
              if (snapshot.connectionState == ConnectionState.waiting) {
                return Center(
                  child: CircularProgressIndicator(),
                );
              } else if (snapshot.hasError) {
                return Text("加载失败");
              } else {
                return snapshot.data ?? Text("NO DATA");
              }
            },
          ),
      ),
    );
  }

  Future<Widget> loadWeb() async {
    Widget res ;
    try {
      _webViewController = WebViewController()
        ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setNavigationDelegate(
        NavigationDelegate(
          onProgress: (int progress) {},
          onPageStarted: (String url) {},
          onPageFinished: (String url) {
            EasyLoading.dismiss();
          },
          onWebResourceError: (WebResourceError error) {},
          onNavigationRequest: (NavigationRequest request) {
            // if (request.url.startsWith('https://www.youtube.com/')) {
            //   return NavigationDecision.prevent;
            // }
            return NavigationDecision.navigate;
          },
        ),
      )
        ..loadRequest(Uri.parse("http://huixiang.lotus-wallet.com/Privacy.html"));
      res = WebViewWidget(controller: _webViewController!);
    } catch (error) {
      res = Text("加载失败");
    }
    return res;
  }

}