import 'dart:async';
import 'dart:io';

import 'package:archive/archive.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:http_server/http_server.dart';
import 'package:logging/logging.dart';
import 'package:path_provider/path_provider.dart';
import 'package:provider/provider.dart';
import 'package:fcs/model/main_model.dart';
import 'package:fcs/vo/setting.dart';
import 'package:fcs/widget/progress.dart';

typedef void ProfileCallback();

class Help extends StatefulWidget {

  const Help({Key key}) : super(key: key);
  @override
  _HelpState createState() => _HelpState();
}

class _HelpState extends State<Help> {
  final log = Logger('Help');

  bool isLoading = false;
  HttpServer httpServer;
  // WebViewController _controller;
  String url = "";

  @override
  void initState() {
    super.initState();
    MainModel mainModel = Provider.of<MainModel>(context, listen: false);
    var isBuyer = mainModel.isBuyer();
    this.url = "http://localhost:7777/web/index.html" +
        (isBuyer ? "?is_buyer=true" : "?is_buyer=false");
    _run(mainModel.setting);
  }

  void _run(Setting setting) async {
    await _download(setting);
    final directory = await getApplicationDocumentsDirectory();
    var staticFiles = new VirtualDirectory('${directory.path}')
      ..allowDirectoryListing = true;

    HttpServer.bind('0.0.0.0', 7777).then((server) async {
      httpServer = server;
      log.info('Server running');
      server.listen(staticFiles.serveRequest);
      // _controller.loadUrl(url);
      log.info("locad url:$url");
    }, onError: (e) {
      log.warning("Error===>:$e");
    });
  }

  Future<void> dispose() async {
    super.dispose();
    if (httpServer != null) await httpServer.close(force: true);
  }

  Future<void> _download(Setting setting) async {
    final directory = (await getApplicationDocumentsDirectory()).path;

    var file = File('$directory/${setting.helpFileName()}');
    if (await file.exists()) {
      return;
    }

    String url = setting.helpURL;
    var req = await http.Client().get(Uri.parse(url));
    File zippedFile = await file.writeAsBytes(req.bodyBytes);

    File prev = File('$directory/web');
    if (await prev.exists()) {
      await prev.delete(recursive: true);
    }

    var bytes = zippedFile.readAsBytesSync();
    var archive = ZipDecoder().decodeBytes(bytes);
    for (var file in archive) {
      var fileName = '$directory/web/${file.name}';
      if (file.isFile) {
        var outFile = File(fileName);
        outFile = await outFile.create(recursive: true);
        await outFile.writeAsBytes(file.content);
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return LocalProgress(
      inAsyncCall: isLoading,
      child: Scaffold(
        appBar: AppBar(
            iconTheme: IconThemeData(
              color: Colors.black, //change your color here
            ),
            centerTitle: true,
            backgroundColor: Colors.white,
            title: ClipRRect(
              child: Image.asset("assets/logo.png", height: 40),
              borderRadius: new BorderRadius.circular(15.0),
            )),
            body:Text("abc"),
        // body: WebView(
        //   initialUrl: url,
        //   javascriptMode: JavascriptMode.unrestricted,
        //   onWebViewCreated: (WebViewController webViewController) {
        //     _controller = webViewController;
        //   },
        // ),
      ),
    );
  }
}