import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'dart:convert';
import 'dart:async';
import 'package:checker/common.dart';
import 'package:checker/network.dart';
import 'package:checker/consts.dart';
import 'package:checker/db.dart';
import 'package:checker/strings.dart';
import 'package:checker/base_state.dart';
import 'package:checker/screens/registration.dart';
import 'package:checker/screens/finish_registration.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(
        margin: const EdgeInsets.all(16.0),
        child: new Row(children: <Widget>[
          new Expanded(child: new Text(item.title)),
          new Text(item.selectedValue),
          getArrow()])
    );
  }

  Widget getArrow() {
    return new Image.asset(settings_arrow_png,
        width: 28.0,
        height: 28.0);
  }

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