import 'dart:io';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:tetra_stats/data_objects/tetrio.dart';
import 'package:tetra_stats/gen/strings.g.dart';
import 'package:tetra_stats/widgets/graphs.dart';
import 'package:window_manager/window_manager.dart';

double? apm;
double? pps;
double? vs;
NerdStats? nerdStats;
EstTr? estTr;
Playstyle? playstyle;
final NumberFormat f2 = NumberFormat.decimalPatternDigits(locale: LocaleSettings.currentLocale.languageCode, decimalDigits: 2);
late String oldWindowTitle;

class CalcView extends StatefulWidget {
  const CalcView({Key? key}) : super(key: key);

  @override
  State<StatefulWidget> createState() => CalcState();
}

class CalcState extends State<CalcView> {
  late ScrollController _scrollController;
  TextEditingController ppsController = TextEditingController();
  TextEditingController apmController = TextEditingController();
  TextEditingController vsController = TextEditingController();

  @override
  void initState() {
    _scrollController = ScrollController();
    if (!kIsWeb && !Platform.isAndroid && !Platform.isIOS){
      windowManager.getTitle().then((value) => oldWindowTitle = value);
      windowManager.setTitle("Tetra Stats: ${t.statsCalc}");
    } 
    super.initState();
  }

  @override
  void dispose() {
    if (!kIsWeb && !Platform.isAndroid && !Platform.isIOS) windowManager.setTitle(oldWindowTitle);
    super.dispose();
  }

  void calc() {
    apm = double.tryParse(apmController.text);
    pps = double.tryParse(ppsController.text);
    vs = double.tryParse(vsController.text);
    if (apm != null && pps != null && vs != null) {
      nerdStats = NerdStats(apm!, pps!, vs!);
      estTr = EstTr(apm!, pps!, vs!, nerdStats!.app, nerdStats!.dss, nerdStats!.dsp, nerdStats!.gbe);
      playstyle = Playstyle(apm!, pps!, nerdStats!.app, nerdStats!.vsapm, nerdStats!.dsp, nerdStats!.gbe, estTr!.srarea, estTr!.statrank);
      setState(() {});
    } else {
      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text("Please, enter valid values")));
    }
  }

  @override
  Widget build(BuildContext context) {
    final t = Translations.of(context);
    return Scaffold(
      appBar: AppBar(
        title: Text(t.statsCalc),
      ),
      backgroundColor: Colors.black,
      body: SafeArea(
        child: NestedScrollView(
            controller: _scrollController,
            headerSliverBuilder: (context, value) {
              return [
                SliverToBoxAdapter(
                  child: Padding(
                    padding: const EdgeInsets.fromLTRB(14, 16, 16, 32),
                    child: Row(
                      children: [
                        Expanded(
                            child: Padding(
                          padding: const EdgeInsets.only(right: 12),
                          child: TextField(
                            onSubmitted: (value) => calc(),
                            controller: apmController,
                            keyboardType: TextInputType.number,
                            decoration: const InputDecoration(label: Text("APM"), alignLabelWithHint: true),
                          ),
                        )),
                        Expanded(
                            child: TextField(
                          onSubmitted: (value) => calc(),
                          controller: ppsController,
                          keyboardType: TextInputType.number,
                          decoration: const InputDecoration(label: Text("PPS"), alignLabelWithHint: true),
                        )),
                        Expanded(
                            child: Padding(
                          padding: const EdgeInsets.only(left: 12),
                          child: TextField(
                            onSubmitted: (value) => calc(),
                            controller: vsController,
                            keyboardType: TextInputType.number,
                            decoration: const InputDecoration(label: Text("VS"), alignLabelWithHint: true),
                          ),
                        )),
                        TextButton(
                          onPressed: () => calc(),
                          child: Text(t.calc),
                        ),
                      ],
                    ),
                  ),
                ),
                const SliverToBoxAdapter(
                  child: Divider(),
                )
              ];
            },
            body: nerdStats == null
                ? Text(t.calcViewNoValues)
                : ListView(
                    children: [
                      _ListEntry(value: nerdStats!.app, label: t.statCellNum.app.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: nerdStats!.vsapm, label: "VS/APM", fractionDigits: 3),
                      _ListEntry(value: nerdStats!.dss, label: t.statCellNum.dss.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: nerdStats!.dsp, label: t.statCellNum.dsp.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: nerdStats!.appdsp, label: "APP + DS/P", fractionDigits: 3),
                      _ListEntry(value: nerdStats!.cheese, label: t.statCellNum.cheese.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: nerdStats!.gbe, label: t.statCellNum.gbe.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: nerdStats!.nyaapp, label: t.statCellNum.nyaapp.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: nerdStats!.area, label: t.statCellNum.area.replaceAll(RegExp(r'\n'), " "), fractionDigits: 3),
                      _ListEntry(value: estTr!.esttr, label: t.statCellNum.estOfTR, fractionDigits: 3),
                      Graphs(apm!, pps!, vs!, nerdStats!, playstyle!),
                    ],
                  )),
      ),
    );
  }
}

class _ListEntry extends StatelessWidget {
  final double value;
  final String label;
  final int? fractionDigits;
  const _ListEntry({required this.value, required this.label, this.fractionDigits});

  @override
  Widget build(BuildContext context) {
    NumberFormat f = NumberFormat.decimalPatternDigits(locale: LocaleSettings.currentLocale.languageCode, decimalDigits: fractionDigits ?? 0);
    return ListTile(title: Text(label), trailing: Text(f.format(value), style: const TextStyle(fontSize: 22)));
  }
}