Add some basic onboarding screens

They don't really work out since I don't quite understand how PageView
and the PageController are supposed to work.

android/app/src/main/java/io/gitjournal/gitjournal/MainActivity.java

@@ -1,10 +1,14 @@
 package io.gitjournal.gitjournal;
 
 import java.io.File;
+import java.io.IOException;
+import java.nio.charset.Charset;
 
 import android.os.Bundle;
 import android.util.Log;
 
+import org.apache.commons.io.FileUtils;
+
 import io.flutter.app.FlutterActivity;
 import io.flutter.plugins.GeneratedPluginRegistrant;
 
@@ -125,6 +129,19 @@ public class MainActivity extends FlutterActivity {
 
                             new GenerateSSHKeysTask(result).execute(sshKeysLocation, comment);
                             return;
+                        } else if (call.method.equals("getSSHPublicKey")) {
+                            final String publicKeyPath = sshKeysLocation + "/id_rsa.pub";
+
+                            String publicKey = "";
+                            try {
+                                publicKey = FileUtils.readFileToString(new File(publicKeyPath), Charset.defaultCharset());
+                            } catch (IOException ex) {
+                                Log.d("GenerateSSHKeys", ex.toString());
+                                result.error("FAILED", "Failed to read the public key", null);
+                            }
+
+                            result.success(publicKey);
+                            return;
                         }
 
                         result.notImplemented();

lib/app.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:journal/screens/home_screen.dart';
+import 'package:journal/screens/onboarding_screens.dart';
 
 import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_analytics/observer.dart';
@@ -11,9 +12,12 @@ class JournalApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    var onBoardingDone = false;
+    var home = onBoardingDone ? new HomeScreen() : new OnBoardingScreen();
+
     return new MaterialApp(
       title: 'Journal',
-      home: new HomeScreen(),
+      home: home,
       theme: new ThemeData(
         brightness: Brightness.dark,
         primaryColor: Colors.lightBlue[800],

lib/screens/onboarding_screens.dart

@@ -0,0 +1,146 @@
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'package:journal/storage/git.dart';
+
+class OnBoardingScreen extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    var pageController = PageController();
+    return PageView(
+      controller: pageController,
+      children: <Widget>[
+        OnBoardingGitUrl(doneFunction: (String sshUrl) {
+          pageController.nextPage(
+            duration: Duration(milliseconds: 200),
+            curve: Curves.easeIn,
+          );
+
+          SharedPreferences.getInstance().then((SharedPreferences pref) {
+            pref.setString("sshCloneUrl", sshUrl);
+          });
+        }),
+        OnBoardingSshKey(),
+      ],
+    );
+  }
+}
+
+class OnBoardingGitUrl extends StatefulWidget {
+  final Function doneFunction;
+
+  OnBoardingGitUrl({@required this.doneFunction});
+
+  @override
+  OnBoardingGitUrlState createState() {
+    return new OnBoardingGitUrlState(doneFunction: this.doneFunction);
+  }
+}
+
+class OnBoardingGitUrlState extends State<OnBoardingGitUrl> {
+  final Function doneFunction;
+
+  final GlobalKey<FormFieldState<String>> sshUrlKey =
+      GlobalKey<FormFieldState<String>>();
+
+  OnBoardingGitUrlState({@required this.doneFunction});
+
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      body: new Container(
+        width: double.infinity,
+        height: double.infinity,
+        color: Colors.green[400],
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          crossAxisAlignment: CrossAxisAlignment.center,
+          children: <Widget>[
+            Text(
+              'Enter the Git SSH URL -',
+              textAlign: TextAlign.center,
+              overflow: TextOverflow.ellipsis,
+              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 38),
+            ),
+            Form(
+              child: TextFormField(
+                key: sshUrlKey,
+                textAlign: TextAlign.center,
+                autofocus: true,
+              ),
+            ),
+            RaisedButton(
+              child: Text("Next"),
+              onPressed: () {
+                var url = sshUrlKey.currentState.value;
+                this.doneFunction(url);
+              },
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class OnBoardingSshKey extends StatefulWidget {
+  @override
+  OnBoardingSshKeyState createState() {
+    return new OnBoardingSshKeyState();
+  }
+}
+
+class OnBoardingSshKeyState extends State<OnBoardingSshKey> {
+  String publicKey = "Generating ...";
+
+  void initState() {
+    super.initState();
+    generateSSHKeys().then((String _publicKey) {
+      setState(() {
+        print("Changing the state");
+        publicKey = _publicKey;
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      body: new Container(
+        width: double.infinity,
+        height: double.infinity,
+        color: Colors.green[400],
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          crossAxisAlignment: CrossAxisAlignment.center,
+          children: <Widget>[
+            Text(
+              'Deploy Public Key',
+              textAlign: TextAlign.center,
+              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 38),
+            ),
+            Text(
+              publicKey,
+              textAlign: TextAlign.center,
+              maxLines: 10,
+              style: TextStyle(fontSize: 10),
+            ),
+            RaisedButton(
+              child: Text("Click when Loaded"),
+              onPressed: () {
+                print("Button pressed");
+              },
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class OnBoardingGitClone extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Text("Cloning");
+  }
+}

lib/storage/git.dart

@@ -26,14 +26,25 @@ Future gitClone(String cloneUrl, String folderName) async {
   }
 }
 
-Future generateSSHKeys() async {
+Future<String> generateSSHKeys() async {
   print("generateSSHKeyss");
   try {
     String publicKey = await _platform.invokeMethod('generateSSHKeys', {});
     print("Public Key " + publicKey);
+    return publicKey;
   } on PlatformException catch (e) {
     print("Failed to generateSSHKeys: '${e.message}'.");
   }
+
+  try {
+    String publicKey = await _platform.invokeMethod('getSSHPublicKey', {});
+    print("Public Key " + publicKey);
+    return publicKey;
+  } on PlatformException catch (e) {
+    print("Failed to getSSHPublicKey: '${e.message}'.");
+  }
+
+  return "";
 }
 
 Future gitPull(String folderName) async {

pubspec.lock

@@ -103,7 +103,7 @@ packages:
     source: hosted
     version: "0.13.3+3"
   http:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: http
       url: "https://pub.dartlang.org"
@@ -249,6 +249,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.3"
   shelf:
     dependency: transitive
     description:

pubspec.yaml

@@ -4,12 +4,12 @@ description: A Journaling App Built on top of Git
 dependencies:
   flutter:
     sdk: flutter
-  http: "^0.11.3+16"
   intl: "^0.15.6"
   path: "^1.5.1"
   uuid: "^1.0.0"
   yaml: "^2.1.13"
   firebase_analytics: ^1.1.0
+  shared_preferences: ^0.4.3
 
 dev_dependencies:
   test: ^1.5.1