clean up

lib/pages/main/splash_page.dart

@@ -0,0 +1,101 @@
+import 'dart:async';
+
+import 'package:fcs/pages/main/model/main_model.dart';
+import 'package:fcs/helpers/theme.dart';
+import 'package:fcs/pages/widgets/local_text.dart';
+import 'package:flutter/material.dart';
+import 'package:logging/logging.dart';
+import 'package:provider/provider.dart';
+
+class SplashScreen extends StatefulWidget {
+  @override
+  _SplashScreenState createState() => new _SplashScreenState();
+}
+
+class _SplashScreenState extends State<SplashScreen> {
+  final log = Logger('_SplashScreenState');
+  String page = "/language_selection";
+  bool _loaded = false;
+  bool _isSupport = false;
+  bool _isOnline = true;
+  Timer timer;
+
+  startTime() async {
+    var _duration = new Duration(milliseconds: 3000);
+    this.timer = new Timer.periodic(_duration, navigationPage);
+  }
+
+  void navigationPage(Timer timer) async {
+    if (_loaded && _isOnline && _isSupport) {
+      timer.cancel();
+      Navigator.of(context).pushReplacementNamed(page);
+    }
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    startTime();
+  }
+
+  void dispose() {
+    super.dispose();
+    if (timer.isActive) timer.cancel();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    MainModel mainModel = Provider.of<MainModel>(context);
+
+    this._isSupport = mainModel.isSupport();
+    this._isOnline = mainModel.isOnline;
+    if (mainModel.isLoaded) {
+      if (mainModel.isFirstLaunch) {
+        page = "/language_selection";
+      } else if (mainModel.isLogin()) {
+        page = "/home";
+      } else {
+        page = "/welcome";
+      }
+      this._loaded = mainModel.isLoaded;
+    }
+
+    return new Scaffold(
+      backgroundColor: Colors.white,
+      body: new Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            new Image.asset(
+              "assets/logo.jpg",
+              width: 180,
+            ),
+            SizedBox(height: 50),
+            Column(
+              children: <Widget>[
+                Text(
+                  "FCS Logistics",
+                  style: welcomeSubLabelStyle,
+                ),
+              ],
+            ),
+            SizedBox(height: 30),
+            _loaded && !_isOnline
+                ? Column(
+                    children: <Widget>[
+                      LocalText(context, "offline.status"),
+                    ],
+                  )
+                : Container(),
+            Text(
+                _loaded && !_isSupport
+                    ? "Version outdated, please update your app!"
+                    : "",
+                style: TextStyle(
+                    color: primaryColor, fontWeight: FontWeight.bold)),
+          ],
+        ),
+      ),
+    );
+  }
+}