import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:line_icons/line_icons.dart';

import '../util/custom_widget.dart';
import '../util/extension_helper.dart';

const String version = '0.5.0';

class AboutApp extends StatefulWidget {
  @override
  _AboutAppState createState() => _AboutAppState();
}

class _AboutAppState extends State<AboutApp> {
  ScrollController _scrollController;
  bool _scroll;
  @override
  void initState() {
    super.initState();
    _scroll = false;
    _scrollController = ScrollController()
      ..addListener(() {
        if (_scrollController.offset > 0 && !_scroll && mounted) {
          setState(() => _scroll = true);
        }
        if (_scrollController.offset <= 0 && _scroll && mounted) {
          setState(() => _scroll = false);
        }
      });
  }

  Widget _listItem(
          BuildContext context, String text, IconData icons, String url) =>
      InkWell(
        onTap: () => url.launchUrl,
        child: Container(
          height: 50.0,
          padding: EdgeInsets.symmetric(horizontal: 20.0),
          alignment: Alignment.centerLeft,
          decoration: BoxDecoration(
            border: Border(
              bottom: Divider.createBorderSide(context),
            ),
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.center,
            mainAxisSize: MainAxisSize.min,
            children: <Widget>[
              Icon(icons, color: Theme.of(context).accentColor),
              Padding(
                padding: EdgeInsets.symmetric(horizontal: 10),
              ),
              Text(text),
            ],
          ),
        ),
      );

  Widget _translatorInfo(BuildContext context, {String name, String flag}) =>
      Container(
        height: 50.0,
        padding: EdgeInsets.symmetric(horizontal: 20.0),
        alignment: Alignment.centerLeft,
        decoration: BoxDecoration(
          border: Border(
            bottom: Divider.createBorderSide(context),
          ),
        ),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            Icon(LineIcons.user, color: Theme.of(context).accentColor),
            Padding(
              padding: EdgeInsets.symmetric(horizontal: 10),
            ),
            Expanded(
                child: Text(
              name,
              maxLines: 1,
              overflow: TextOverflow.fade,
            )),
            if (flag != null)
              ClipRRect(
                borderRadius: BorderRadius.circular(4),
                child: Image(
                  image: AssetImage('assets/$flag.png'),
                  height: 20,
                  width: 30,
                  fit: BoxFit.cover,
                ),
              ),
          ],
        ),
      );

  @override
  Widget build(BuildContext context) {
    OverlayEntry _createOverlayEntry(TapDownDetails detail) {
      // RenderBox renderBox = context.findRenderObject();
      var offset = detail.globalPosition;
      return OverlayEntry(
        builder: (constext) => Positioned(
          left: offset.dx - 5,
          top: offset.dy - 120,
          child: Container(
              width: 20,
              height: 120,
              color: Colors.transparent,
              alignment: Alignment.topCenter,
              child: HeartSet(height: 120, width: 20)),
        ),
      );
    }

    final s = context.s;
    return AnnotatedRegion<SystemUiOverlayStyle>(
      value: SystemUiOverlayStyle(
        statusBarIconBrightness: Theme.of(context).accentColorBrightness,
        systemNavigationBarColor: Theme.of(context).primaryColor,
        systemNavigationBarIconBrightness:
            Theme.of(context).accentColorBrightness,
      ),
      child: Scaffold(
        backgroundColor: Theme.of(context).primaryColor,
        appBar: AppBar(
          title: Text(s.homeToprightMenuAbout),
          leading: CustomBackButton(),
          elevation: _scroll ? 1 : 0,
        ),
        body: SafeArea(
          child: ScrollConfiguration(
            behavior: NoGrowBehavior(),
            child: SingleChildScrollView(
              controller: _scrollController,
              scrollDirection: Axis.vertical,
              child: Padding(
                padding: const EdgeInsets.all(20.0),
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.start,
                  mainAxisSize: MainAxisSize.min,
                  children: <Widget>[
                    Container(
                      height: 110.0,
                      alignment: Alignment.center,
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        mainAxisSize: MainAxisSize.min,
                        children: <Widget>[
                          Image(
                            image: AssetImage('assets/logo.png'),
                            height: 80,
                          ),
                          Text(s.version(version)),
                        ],
                      ),
                    ),
                    Padding(
                      padding: const EdgeInsets.all(20),
                      child: Text(
                        'Tsacdop is a podcast player built with flutter, a clean, simply beautiful and friendly app.',
                        textAlign: TextAlign.center,
                      ),
                    ),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: [
                        TextButton(
                          onPressed: () =>
                              'https://tsacdop.stonegate.me/#/privacy'
                                  .launchUrl,
                          style: TextButton.styleFrom(
                              primary: context.accentColor,
                              textStyle:
                                  TextStyle(fontWeight: FontWeight.bold)),
                          child: Text(
                            s.privacyPolicy,
                          ),
                        ),
                        Container(
                          margin: const EdgeInsets.symmetric(horizontal: 5),
                          height: 4,
                          width: 4,
                          decoration: BoxDecoration(
                              color: context.accentColor,
                              shape: BoxShape.circle),
                        ),
                        TextButton(
                          onPressed: () =>
                              'https://tsacdop.stonegate.me/#/changelog'
                                  .launchUrl,
                          style: TextButton.styleFrom(
                              primary: context.accentColor,
                              textStyle:
                                  TextStyle(fontWeight: FontWeight.bold)),
                          child: Text(s.changelog,
                              style: TextStyle(color: context.accentColor)),
                        ),
                      ],
                    ),
                    Padding(
                      padding: EdgeInsets.only(top: 20.0, bottom: 10.0),
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.start,
                        mainAxisSize: MainAxisSize.min,
                        children: <Widget>[
                          _listItem(context, 'Twitter @tsacdop',
                              LineIcons.twitter, 'https://twitter.com/tsacdop'),
                          _listItem(context, 'GitHub', LineIcons.github_alt,
                              'https://github.com/stonega/tsacdop'),
                          _listItem(context, 'Telegram', LineIcons.telegram,
                              'https://t.me/joinchat/Bk3LkRpTHy40QYC78PK7Qg'),
                          Center(
                            child: SizedBox(
                              width: 200,
                              child: ElevatedButton(
                                onPressed: () =>
                                    'https://www.buymeacoffee.com/stonegate'
                                        .launchUrl,
                                style: ElevatedButton.styleFrom(
                                    primary: context.accentColor),
                                child: Container(
                                  height: 30.0,
                                  padding:
                                      EdgeInsets.symmetric(horizontal: 4.0),
                                  alignment: Alignment.center,
                                  child: Row(
                                    mainAxisAlignment: MainAxisAlignment.center,
                                    mainAxisSize: MainAxisSize.min,
                                    children: <Widget>[
                                      Text('Buy Me A Coffee',
                                          style: TextStyle(
                                              fontWeight: FontWeight.bold)),
                                      SizedBox(width: 10),
                                      Image(
                                        image: AssetImage(
                                            'assets/buymeacoffee.png'),
                                        height: 20,
                                        fit: BoxFit.fitHeight,
                                      ),
                                    ],
                                  ),
                                ),
                              ),
                            ),
                          ),
                        ],
                      ),
                    ),
                    Padding(
                      padding: EdgeInsets.all(10.0),
                    ),
                    Padding(
                      padding: EdgeInsets.only(top: 20.0, bottom: 10.0),
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.start,
                        mainAxisSize: MainAxisSize.min,
                        children: <Widget>[
                          Row(
                            children: [
                              SizedBox(width: 25),
                              Text(
                                s.translators,
                                style: TextStyle(
                                    color: Theme.of(context).accentColor,
                                    fontWeight: FontWeight.bold),
                              ),
                              SizedBox(width: 2),
                              Icon(Icons.favorite, color: Colors.red, size: 20),
                            ],
                          ),
                          _translatorInfo(context, name: 'Atrate'),
                          _translatorInfo(context, name: 'ppp', flag: 'fr'),
                          _translatorInfo(context,
                              name: 'Joel Israel', flag: 'mx'),
                          _translatorInfo(context,
                              name: 'Bruno Pinheiro', flag: 'pt'),
                          _translatorInfo(context,
                              name: 'Edoardo Maria Elidoro', flag: 'it'),
                        ],
                      ),
                    ),
                    //Spacer(),
                    Padding(
                      padding: EdgeInsets.symmetric(vertical: 10),
                    ),
                    Container(
                      height: 50,
                      alignment: Alignment.center,
                      child: GestureDetector(
                        onTapDown: (detail) async {
                          OverlayEntry _overlayEntry;
                          _overlayEntry = _createOverlayEntry(detail);
                          Overlay.of(context).insert(_overlayEntry);
                          await Future.delayed(Duration(seconds: 2));
                          _overlayEntry?.remove();
                        },
                        child: Row(
                          crossAxisAlignment: CrossAxisAlignment.center,
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: <Widget>[
                            Image.asset(
                              'assets/text.png',
                              height: 25,
                            ),
                            Padding(
                              padding: EdgeInsets.symmetric(horizontal: 5),
                            ),
                            Icon(
                              Icons.favorite,
                              color: Colors.blue,
                            ),
                            Padding(
                              padding: EdgeInsets.symmetric(horizontal: 5),
                            ),
                            FlutterLogo(
                              size: 18,
                            ),
                          ],
                        ),
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}