import 'dart:collection';

import 'package:aitrainer_app/bloc/exercise_control/exercise_control_bloc.dart';
import 'package:aitrainer_app/localization/app_language.dart';
import 'package:aitrainer_app/repository/exercise_repository.dart';
import 'package:aitrainer_app/util/trans.dart';
import 'package:aitrainer_app/widgets/app_bar.dart';
import 'package:aitrainer_app/widgets/bottom_nav.dart';
import 'package:aitrainer_app/widgets/splash.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_form_bloc/flutter_form_bloc.dart';
import 'package:aitrainer_app/library/numberpicker.dart';

class ExerciseControlPage extends StatefulWidget {
  _ExerciseControlPage createState() => _ExerciseControlPage();
}

class _ExerciseControlPage extends State<ExerciseControlPage> with Trans {
  @override
  Widget build(BuildContext context) {
    LinkedHashMap arguments = ModalRoute.of(context).settings.arguments;
    final ExerciseRepository exerciseRepository = arguments['exerciseRepository'];
    final double percent = arguments['percent'];
    final bool readonly = arguments['readonly'];
    setContext(context);

    return BlocProvider(
        create: (context) => ExerciseControlBloc(exerciseRepository: exerciseRepository, percentToCalculate: percent, readonly: readonly)
          ..add(ExerciseControlLoad()),
        child: BlocConsumer<ExerciseControlBloc, ExerciseControlState>(listener: (context, state) {
          if (state is ExerciseControlError) {
            Scaffold.of(context).showSnackBar(
                SnackBar(backgroundColor: Colors.orange, content: Text(state.message, style: TextStyle(color: Colors.white))));
          } else if (state is ExerciseControlLoading) {
            return LoadingDialog();
          }
        }, builder: (context, state) {
          final exerciseBloc = BlocProvider.of<ExerciseControlBloc>(context);
          if (state is ExerciseControlReady) {
            return getControlForm(exerciseBloc);
          } else {
            return getControlForm(exerciseBloc);
          }
        }));
  }

  Form getControlForm(ExerciseControlBloc exerciseBloc) {
    String exerciseName = AppLanguage().appLocal == Locale("en")
        ? exerciseBloc.exerciseRepository.exerciseType.name
        : exerciseBloc.exerciseRepository.exerciseType.nameTranslation;

    return Form(
      child: Scaffold(
        resizeToAvoidBottomInset: true,
        appBar: AppBarNav(depth: 1),
        body: Container(
            width: MediaQuery.of(context).size.width,
            height: MediaQuery.of(context).size.height,
            decoration: BoxDecoration(
              image: DecorationImage(
                image: AssetImage('asset/image/WT_light_background.png'),
                fit: BoxFit.fill,
                alignment: Alignment.center,
              ),
            ),
            child: Container(
                padding: const EdgeInsets.only(top: 25, left: 25, right: 25),
                child: SingleChildScrollView(
                  scrollDirection: Axis.vertical,
                  child: Column(
                      mainAxisAlignment: MainAxisAlignment.spaceAround,
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: <Widget>[
                        Text(
                          exerciseName,
                          style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18, color: Colors.deepOrange),
                          overflow: TextOverflow.fade,
                          maxLines: 1,
                          softWrap: true,
                        ),
                        FlatButton(
                          child: Row(mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [
                            Icon(Icons.info),
                            Flexible(
                              child: Text(t("Why do you need Exercise Control?"),
                                  style: TextStyle(color: Colors.blueAccent, fontWeight: FontWeight.normal, fontSize: 14)),
                            ),
                            Icon(Icons.arrow_forward_ios),
                          ]),
                          textColor: Colors.blueAccent,
                          color: Colors.transparent,
                          onPressed: () => {
                            //Navigator.of(context).pushNamed('exerciseTypeDescription', arguments: exerciseBloc.exerciseRepository),
                          },
                        ),
                        Row(
                          mainAxisAlignment: MainAxisAlignment.start,
                          children: [
                            Text(
                              t("Your 1RM:"),
                            ),
                            Text(
                              " " +
                                  exerciseBloc.initialRM.toStringAsFixed(0) +
                                  " " +
                                  exerciseBloc.exerciseRepository.exerciseType.unitQuantityUnit,
                              style: TextStyle(fontWeight: FontWeight.bold),
                            ),
                          ],
                        ),
                        Divider(),
                        numberPickForm(exerciseBloc, 1),
                        Divider(),
                        numberPickForm(exerciseBloc, 2),
                        Divider(),
                        numberPickForm(exerciseBloc, 3),
                      ]),
                ))),
        bottomNavigationBar: BottomNavigator(bottomNavIndex: 1),
      ),
    );
  }

  Widget numberPickForm(ExerciseControlBloc exerciseBloc, int step) {
    String strTimes = step == 2 ? exerciseBloc.origQuantity.toString() : "max.";
    String textInstruction = "";
    textInstruction = t("Please repeat with ") +
        exerciseBloc.unitQuantity.toStringAsFixed(0) +
        " " +
        exerciseBloc.exerciseRepository.exerciseType.unitQuantityUnit +
        t("hu_with") +
        " " +
        strTimes +
        " " +
        t("times!");

    String title = step.toString() + ". " + t("Control Exercise:");

    List<Widget> listWidgets = [
      Text(
        title,
        style: TextStyle(fontWeight: FontWeight.bold),
      ),
      Text(
        textInstruction,
        style: TextStyle(fontSize: 12),
      ),
      Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          NumberPicker.horizontal(
            highlightSelectedValue: step == exerciseBloc.step,
            initialValue: exerciseBloc.quantity.toInt(),
            minValue: 0,
            maxValue: 200,
            step: 1,
            onChanged: (value) => {exerciseBloc.add(ExerciseControlQuantityChange(quantity: value.toDouble(), step: step))},
            listViewHeight: 80,
            //decoration: _decoration,
          ),
          RaisedButton(
              padding: EdgeInsets.all(0),
              textColor: Colors.white,
              color: step == exerciseBloc.step ? Colors.blue : Colors.black26,
              focusColor: Colors.blueAccent,
              onPressed: () => {
                    exerciseBloc.add(ExerciseControlSubmit(step: step)),
                    if (step == 3) {confirmationDialog(exerciseBloc)}
                  },
              child: Text(
                t("Save"),
                style: TextStyle(fontSize: 12),
              )),
        ],
      ),
    ];

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: listWidgets,
    );
  }

  void confirmationDialog(ExerciseControlBloc bloc) {
    String unit = t(bloc.exerciseRepository.exerciseType.unit);

    showCupertinoDialog(
        useRootNavigator: true,
        context: context,
        //barrierDismissible: false,
        builder: (_) => CupertinoAlertDialog(
              title: Text(t("Summary of your test")),
              content: Column(children: [
                Text(
                  t("Test") + ": " + bloc.repeats[1].toStringAsFixed(0) + "x" + bloc.repeats[0].toStringAsFixed(0) + " " + unit,
                  style: (TextStyle(color: Colors.blue)),
                ),
                Divider(),
                Text(
                  t("1st Control") + ": " + bloc.repeats[2].toStringAsFixed(0) + "x" + bloc.unitQuantity.toStringAsFixed(0) + " " + unit,
                  style: (TextStyle(color: Colors.blue)),
                ),
                Text(
                  t("2nd Control") + ": " + bloc.repeats[3].toStringAsFixed(0) + "x" + bloc.unitQuantity.toStringAsFixed(0) + " " + unit,
                  style: (TextStyle(color: Colors.blue)),
                ),
                Text(
                  t("3rd Control") + ": " + bloc.repeats[4].toStringAsFixed(0) + "x" + bloc.unitQuantity.toStringAsFixed(0) + " " + unit,
                  style: (TextStyle(color: Colors.blue)),
                ),
              ]),
              actions: [
                FlatButton(
                  child: Text(t("OK")),
                  onPressed: () => {Navigator.of(context).pop(), Navigator.of(context).pop()},
                )
              ],
            ));
  }
}