register app in ui

lib/business_logic/auth/oauth.dart

@@ -1,6 +1,9 @@
+import 'dart:convert';
+
 import 'package:http/http.dart' as http;
 import 'package:url_launcher/url_launcher.dart';
 import '../../global.dart' as global;
+import '../../business_logic/settings.dart' as settings;
 
 class App {
   late String clientSecret;
@@ -27,15 +30,26 @@ class App {
   }
 }
 
+Future<http.Response> askKnownServerForAppRegistration() async {
+  String url = await settings.loadInstanceUrl();
+  try {
+    return await registerApp(url);
+  } catch (e) {
+    return http.Response(jsonEncode({}), 404);
+  }
+}
+
 Future<http.Response> registerApp(String baseurl) async {
   //String url = baseurl Uri."api/v1/apps";
   Uri url = Uri.https(baseurl, "/api/v1/apps");
-  var response = await http.post(url, headers: global.defaultHeaders, body: {
+  final response = await http.post(url,
+      headers: global.defaultHeaders,
+      body: jsonEncode({
         'client_name': global.name,
-    'redirect_uris': "ietf:wg:oauth:2.0:oob",
+        'redirect_uris': "urn:ietf:wg:oauth:2.0:oob",
         'scopes': "read write",
         'website': global.website
-  });
+      }));
   return response;
 }
 

lib/business_logic/settings.dart

@@ -0,0 +1,30 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+enum Settings {
+  instanceUrl,
+  username,
+}
+
+void saveSetting(Settings setting, dynamic value) async {
+  final prefs = await SharedPreferences.getInstance();
+}
+
+Future<bool> saveInstanceUrl(String url) async {
+  final prefs = await SharedPreferences.getInstance();
+  return prefs.setString("instance-url", url);
+}
+
+Future<String> loadInstanceUrl() async {
+  final prefs = await SharedPreferences.getInstance();
+  String? possibleReturn = prefs.getString("instance-url");
+  if (possibleReturn == null) {
+    return "example.com";
+  } else {
+    return possibleReturn;
+  }
+}
+
+Future<bool> saveUsername(String username) async {
+  final prefs = await SharedPreferences.getInstance();
+  return prefs.setString("username", username);
+}

lib/pages/login.dart

@@ -1,7 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:http/http.dart';
 import 'package:slothmu/business_logic/user.dart';
 import 'package:localization/localization.dart';
+import 'package:http/http.dart' as http;
 import '../business_logic/auth/oauth.dart' as oauth;
+import '../business_logic/settings.dart' as settings;
+import '../business_logic/user.dart' as user;
 
 class Login extends StatefulWidget {
   const Login({Key? key}) : super(key: key);
@@ -44,6 +48,11 @@ class _LoginFormState extends State<LoginForm> {
         children: [
           Text("greeting".i18n(), style: const TextStyle(fontSize: 64)),
           TextFormField(
+            onSaved: (value) async {
+              await settings
+                  .saveInstanceUrl(user.urlFromUsername(name: value!));
+              await settings.saveUsername(user.userFromUsername(name: value));
+            },
             decoration: InputDecoration(
               labelText: "user-id".i18n(),
               hintText: "user-id-example".i18n(),
@@ -54,8 +63,6 @@ class _LoginFormState extends State<LoginForm> {
             validator: (value) {
               if (value!.isEmpty || !isValidUsername(name: value)) {
                 return "user-id-not-valid".i18n();
-              } else {
-                return null;
               }
             },
           ),
@@ -66,6 +73,7 @@ class _LoginFormState extends State<LoginForm> {
                   ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                       content: Text("login-failed-snackbar-text".i18n())));
                 } else {
+                  formKey.currentState?.save();
                   Navigator.push(
                       context,
                       MaterialPageRoute(
@@ -82,6 +90,9 @@ class _LoginFormState extends State<LoginForm> {
   }
 }
 
+/* 
+page that handles authenticating user
+*/
 class AuthPage extends StatefulWidget {
   const AuthPage({Key? key, required String baseurl}) : super(key: key);
 
@@ -94,7 +105,7 @@ class _AuthPageState extends State<AuthPage> {
   Widget build(BuildContext context) {
     return Scaffold(
       body: Padding(
-        padding: const EdgeInsets.all(8.0),
+        padding: const EdgeInsets.all(24.0),
         child: Column(
           mainAxisAlignment: MainAxisAlignment.spaceEvenly,
           children: [
@@ -103,7 +114,43 @@ class _AuthPageState extends State<AuthPage> {
                 decoration: InputDecoration(
                     hintText: "123-ABC",
                     icon: const Icon(Icons.password),
-                    labelText: "code-hint".i18n()))
+                    labelText: "code-hint".i18n())),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+              children: [
+                TextButton.icon(
+                    onPressed: () {
+                      Navigator.pop(context);
+                    },
+                    icon: const Icon(Icons.arrow_back),
+                    label: Text("back-button".i18n())),
+                FutureBuilder<http.Response>(
+                  future: oauth.askKnownServerForAppRegistration(),
+                  builder: (context, snapshot) {
+                    if (snapshot.hasError) {
+                      return Text("login-failed-snackbar-text".i18n());
+                    } else if (snapshot.hasData) {
+                      if (snapshot.data?.statusCode != null) {
+                        print(snapshot.data?.body);
+                        if (snapshot.data?.statusCode != 200) {
+                          return Row(
+                            children: [
+                              Text("error ${snapshot.data!.statusCode}")
+                            ],
+                          );
+                        }
+                      }
+                      return TextButton.icon(
+                          onPressed: null,
+                          icon: const Icon(Icons.check),
+                          label: Text("confirm-button".i18n()));
+                    } else {
+                      return const CircularProgressIndicator();
+                    }
+                  },
+                ),
+              ],
+            )
           ],
         ),
       ),