Adding operations and settings.

lib/main.dart

@@ -4,6 +4,8 @@ import 'ui/welcome_page.dart';
 import 'ui/credentials_form.dart';
 import 'ui/server_form.dart';
 import 'ui/dialog.dart';
+import 'ui/settings_page.dart';
+import 'ui/operations_page.dart';
 
 void main() => runApp(MyApp());
 
@@ -22,8 +24,10 @@ class MyApp extends StatelessWidget {
         routes: {
             "/": (context) => HomePage(nextRoute: "/welcome"),
             "/welcome": (context) => WelcomePage(nextRoute: "/settings/server"),
+            "/settings": (context) => SettingsPage(),
             "/settings/server": (context) => ServerForm(defaultNextRoute: "/settings/credentials"),
             "/settings/credentials": (context) => CredentialsForm(defaultNextRoute: "/"),
+            "/operations": (context) => OperationsPage(),
         });
   }
 }

lib/ui/operations_page.dart

@@ -0,0 +1,174 @@
+import 'package:flutter/material.dart';
+import 'package:logger/logger.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'dart:async';
+
+import 'drawer.dart';
+import '../utils/connection.dart';
+
+var log = Logger();
+
+typedef WhatNext = Future<void> Function();
+
+Card loadingTile(bool loading, Widget subject, WhatNext callback) {
+  Widget widgetBody;
+  if (loading) {
+    widgetBody = CircularProgressIndicator();
+  } else {
+    widgetBody = subject;
+  }
+  return Card(
+      child: ListTile(title: Center(child: widgetBody), onTap: callback));
+}
+
+class OperationsPage extends StatefulWidget {
+  OperationsPage({Key key, this.title = "Operations"}) : super(key: key);
+  final String title;
+
+  @override
+  _OperationsState createState() => _OperationsState();
+}
+
+class _OperationsState extends State<OperationsPage> {
+  Connection connection;
+  bool connected = false;
+  bool checkedIn = false;
+  bool _loading = false;
+
+  Future<void> initConnect() async {
+    var persistence = await SharedPreferences.getInstance();
+    var _username = persistence.getString("username");
+    var _password = persistence.getString("password");
+    var _baseAddr = Uri.parse(persistence.getString("botZAddress"));
+    log.d("user: $_username\npass: $_password\nbaseAddr: $_baseAddr");
+
+    if (_username == null || _password == null || _baseAddr == null) {
+      throw Exception("Missing configurations!");
+    }
+
+    var _connection = Connection(_username, _password, _baseAddr);
+    setState(() {
+      connection = _connection;
+      connected = connection.isLoggedIn();
+    });
+  }
+
+  Future<void> login() async {
+    log.d("Logging in...");
+    setState(() {
+      _loading = true;
+    });
+    await connection.login();
+    setState(() {
+      connected = connection.isLoggedIn();
+      checkedIn = connection.isCheckedIn();
+      _loading = false;
+    });
+  }
+
+  Future<void> logout() async {
+    log.d("Logging in...");
+    setState(() {
+      _loading = true;
+    });
+    await connection.logout();
+    setState(() {
+      connected = connection.isLoggedIn();
+      checkedIn = connection.isCheckedIn();
+      _loading = false;
+    });
+  }
+
+  Future<void> checkIn() async {
+    log.d("Checking in...");
+    setState(() {
+      _loading = true;
+    });
+    await connection.checkin();
+    setState(() {
+      checkedIn = connection.isCheckedIn();
+      _loading = false;
+    });
+  }
+
+  Future<void> checkOut() async {
+    log.d("Checking out...");
+    setState(() {
+      _loading = true;
+    });
+    await connection.checkout();
+    setState(() {
+      checkedIn = connection.isCheckedIn();
+      _loading = false;
+    });
+  }
+
+  loginButton() {
+    if (_loading) {
+      return CircularProgressIndicator();
+    } else {
+      return Text("Login");
+    }
+  }
+
+  _loggedOutBody(BuildContext context) => <Widget>[
+        loadingTile(
+            this._loading,
+            Row(children: <Widget>[
+              Icon(Icons.arrow_forward_ios),
+              Text("Login")
+            ]),
+            login)
+      ];
+
+  // Column(
+  // mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+  // crossAxisAlignment: CrossAxisAlignment.center,
+  // children: <Widget>[
+  //   Center(child: Text("You are not logged in")),
+  //   RaisedButton(onPressed: login, child: loginButton()),
+  // ]);
+
+  Widget checkInOutTile() {
+    if (checkedIn) {
+      return loadingTile(
+          this._loading,
+          Row(children: <Widget>[Icon(Icons.arrow_downward), Text("Check out")]),
+          checkOut);
+    } else {
+      return loadingTile(
+          this._loading,
+          Row(children: <Widget>[Icon(Icons.arrow_upward), Text("Check in")]),
+          checkIn);
+    }
+  }
+
+  _loggedInBody(BuildContext context) => <Widget>[
+        checkInOutTile(),
+        loadingTile(this._loading,
+            Row(children: <Widget>[Icon(Icons.close), Text("Logout")]), logout)
+      ];
+
+  _body(BuildContext context) {
+    if (connected) {
+      return _loggedInBody(context);
+    } else {
+      return _loggedOutBody(context);
+    }
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    initConnect();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: Text(widget.title)),
+      body: ListView(padding: EdgeInsets.all(5), children: _body(context)),
+      drawer: theDrawer(context),
+    );
+  }
+}

lib/ui/settings_page.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+import 'package:logger/logger.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'dart:async';
+
+import 'drawer.dart';
+
+var log = Logger();
+
+class SettingsPage extends StatelessWidget {
+  SettingsPage({this.title = "Settings"});
+  final String title;
+
+  Future<void> _goToServerForm(BuildContext context) async {
+    log.d("Going to server form");
+    var persistence = await SharedPreferences.getInstance();
+    persistence.setString("nextRoute", "/settings");
+    Navigator.of(context).pushNamed("/settings/server");
+  }
+
+  Future<void> _goToCredentialsForm(BuildContext context) async {
+    log.d("Going to credentials form");
+    var persistence = await SharedPreferences.getInstance();
+    persistence.setString("nextRoute", "/settings");
+    Navigator.of(context).pushNamed("/settings/credentials");
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: Text(title)),
+      body: ListView(padding: EdgeInsets.all(5), children: <Widget>[
+        ListTile(
+            title: Text("Change credentials"),
+            onTap: () => _goToCredentialsForm(context)),
+        ListTile(
+            title: Text("Change server configurations"),
+            onTap: () => _goToServerForm(context)),
+      ]),
+      drawer: theDrawer(context),
+    );
+  }
+}