import 'package:checker/screens/currencies.dart';
import 'package:checker/screens/languages.dart';
import 'package:flutter/material.dart';
import 'package:checker/common.dart';
import 'package:checker/consts.dart';
import 'package:checker/strings.dart';
import 'package:checker/base/base_state.dart';

class SettingsScreen extends StatefulWidget {
  @override State createState() => new _SettingsState();
}

class MenuItem {

  // Заголовок пункта меню и выбранное значение.
  String title, selectedValue;

  MenuItem(this.title, this.selectedValue);
}

class _SettingsState extends BaseState<SettingsScreen> {

  List<MenuItem> menuItems;

  @override onStart() {
    if (menuItems == null) {
      helper.getSettings().then((info) {
        setState(() {
          print("load settings");
          menuItems = [
            new MenuItem(StringsLocalization.locale(), getLocaleTitle(info["locale"])),
            new MenuItem(StringsLocalization.currency(), getCurrencyTitle(info["currency"]))
          ];
        });
      });
    }
  }

  @override
  Widget getScreenContent() {
    return menuItems == null
        ? getBackground()
        : new ListView(children: getSettings());
  }

  @override
  List<Widget> getMenuButtons() {
    return null;
  }

  List<Widget> getSettings() {
    List<Widget> widgets = new List();
    for (MenuItem item in menuItems) {
      widgets.add(getSettingsItem(item));
    }
    return widgets;
  }

  Widget getSettingsItem(MenuItem item) {
    return new Container(
        height: 56.0,
        child: (new FlatButton(onPressed: () => onPressed(menuItems.indexOf(item)),
            child: new Row(children: <Widget>[
              new Expanded(child: new Container(child: new Text(item.title))),
              new Text(item.selectedValue),
              getArrow()]))));
  }

  void onPressed(int position) {
    switch (position) {
      case 0 : return pushRoute(context, new LanguagesScreen());
      case 1 : return pushRoute(context, new CurrenciesScreen());
    }
  }

  Widget getArrow() {
    return new Image.asset(settings_arrow_png);
  }

  @override
  String getTitle() {
    return StringsLocalization.settings();
  }
}