// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

import '../logic/croupier.dart' show Croupier;
import '../styles/common.dart' as style;
import 'croupier.dart' show CroupierComponent;

final GlobalKey _scaffoldKey = new GlobalKey();

class MainRoute extends StatefulComponent {
  final Croupier croupier;

  MainRoute(this.croupier);

  MainRouteState createState() => new MainRouteState();
}

class MainRouteState extends State<MainRoute> {
  @override
  void initState() {
    super.initState();
    // Croupier (logic) needs this in case of syncbase watch updates.
    config.croupier.informUICb = _informUICb;
  }

  void _informUICb() {
    if (this.mounted) {
      setState(() {});
    }
  }

  Widget build(BuildContext context) {
    // TODO(alexfandrianto): A better way to do this is to show the splash
    // screen while the Store is initializing.
    // https://github.com/vanadium/issues/issues/958
    if (config.croupier.settings == null) {
      return _buildSplashScreen();
    }
    return new Scaffold(
        key: _scaffoldKey,
        toolBar: new ToolBar(
            left:
                new IconButton(icon: "navigation/menu", onPressed: _showDrawer),
            center: new Text('Croupier')),
        body: new Material(child: new CroupierComponent(config.croupier)));
  }

  // TODO(alexfandrianto): Can we do better than this?
  Widget _buildSplashScreen() {
    var stack = new Stack([
      new AssetImage(name: 'images/splash/background.png', fit: ImageFit.cover),
      new Row([
        new AssetImage(
            name: 'images/splash/flutter.png', width: style.Size.splashLogo),
        new AssetImage(
            name: 'images/splash/vanadium.png', width: style.Size.splashLogo)
      ], justifyContent: FlexJustifyContent.center),
      new Container(
          child: new Row(
              [new Text('Loading Croupier...', style: style.Text.splash)],
              alignItems: FlexAlignItems.end,
              justifyContent: FlexJustifyContent.center),
          padding: style.Spacing.normalPadding)
    ]);
    return stack;
  }

  void _showDrawer() {
    showDrawer(
        context: context,
        child: new Block(<Widget>[
          new DrawerHeader(
              child: new Text('Croupier', style: style.Text.titleStyle)),
          new DrawerItem(
              icon: 'action/settings',
              // TODO(alexfandrianto): Fix the Splash Screen, and we won't need
              // to check if settings is null here.
              // https://github.com/vanadium/issues/issues/958
              onPressed:
                  config.croupier.settings != null ? _handleShowSettings : null,
              child: new Text('Settings')),
          // TODO(alexfandrianto): Once Flutter alpha branch is updated, this
          // DrawerItem can have a Switch inside instead of DebugRoute.
          // https://github.com/vanadium/issues/issues/957
          new DrawerItem(
              icon: 'action/build',
              onPressed: _handleShowDebug,
              child: new Text('Debug Mode')),
          new DrawerItem(
              icon: 'action/help', child: new Text('Help & Feedback'))
        ]));
  }

  void _handleShowSettings() {
    Navigator.of(context)
      ..pop()
      ..pushNamed('/settings');
  }

  void _handleShowDebug() {
    Navigator.of(context)
      ..pop()
      ..pushNamed('/debug');
  }
}