import 'dart:html' as html;

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:manager_app/Components/loading_common.dart';
import 'package:manager_app/app_context.dart';
import 'package:provider/provider.dart';

class PolicyScreen extends StatefulWidget {
  final String? param;

  PolicyScreen({this.param});

  @override
  _PolicyScreenState createState() => _PolicyScreenState();
}

class _PolicyScreenState extends State<PolicyScreen> {
  final html.IFrameElement _iframeElement = html.IFrameElement();
  String filePath2 = 'assets/files/policy_page.html';
  String filePath = 'assets/files/policy_text.text';
  String filePathMDLF = 'assets/files/policy_text_mdlf.text';

  @override
  Widget build(BuildContext context) {
    final appContext = Provider.of<AppContext>(context);
    Size size = MediaQuery.of(context).size;

    return Scaffold(
        body: FutureBuilder(
            future: getHTML(),
            builder: (context, AsyncSnapshot<dynamic> snapshot) {
              if (snapshot.connectionState == ConnectionState.done) {
                return Container(
                    width: size.width * 0.9,
                    height: size.height,
                    child: SingleChildScrollView(
                        child: Padding(
                          padding: const EdgeInsets.all(8.0),
                          child: Column(
                            children: [
                              Center(child: Text(snapshot.data)),
                            ],
                          ),
                        ),
                    )
                        /*child: WebView(htmlText: snapshot.data))*/
                );
              } else if (snapshot.connectionState == ConnectionState.none) {
                return Text("No data");
              } else {
                return Center(
                    child: Container(
                        height: size.height * 0.2,
                        child: LoadingCommon()
                    )
                );
              }
            }
        ));
  }

  _loadHtmlFromAssets() async {
    String fileHtmlContents = await rootBundle.loadString(filePath);

    /*if(kIsWeb) {
      _iframeElement.src = fileHtmlContents;
      _iframeElement.style.border = 'none';

      //ignore: undefined_prefixed_name
      ui.platformViewRegistry.registerViewFactory(
        _loadHtmlFromAssets(), //use source as registered key to ensure uniqueness
        (int viewId) => _iframeElement,
      );
    }*/
    return fileHtmlContents;
  }

  Future<String> getHTML() async {
    switch(widget.param) {
      case "mdlf":
        return await rootBundle.loadString(filePathMDLF);
    }
    return await rootBundle.loadString(filePath);
  }
}