Show security questions

lib/helpers/account_helper.dart

@@ -134,6 +134,16 @@ class AccountHelper {
               .execWithThrow())
           .getObject()["defined"];
 
+  /// Get the security questions of the user
+  ///
+  /// Throws in case of failure
+  static Future<List<String>> getSecurityQuestions(String email) async =>
+      ((await APIRequest.withoutLogin("account/get_security_questions")
+                  .addString("email", email)
+                  .execWithThrow())
+              .getObject()["questions"])
+          .cast<String>();
+
   /// Get current user ID from the server
   Future<int> _downloadCurrentUserID() async {
     final response = await APIRequest(

lib/ui/routes/reset_password_route.dart

@@ -6,6 +6,7 @@ import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
 
 /// Reset password route
 ///
@@ -21,14 +22,14 @@ class ResetPasswordRoute extends StatelessWidget {
       body: Center(
         child: ConstrainedBox(
           constraints: BoxConstraints(maxWidth: 300),
-          child: _ResetPasswordBody(),
+          child: SingleChildScrollView(child: _ResetPasswordBody()),
         ),
       ),
     );
   }
 }
 
-enum _SelectedOption { NONE }
+enum _SelectedOption { NONE, SECURITY_QUESTIONS }
 
 class _ResetPasswordBody extends StatefulWidget {
   @override
@@ -54,6 +55,10 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
 
   void _setLoading(bool loading) => setState(() => _loading = loading);
 
+  /// Step 3b - Answer security questions
+  List<String> _questions;
+  var _questionsControllers = List<TextEditingController>();
+
   @override
   Widget build(BuildContext context) {
     if (_loading) return buildCenteredProgressBar();
@@ -63,6 +68,9 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
     switch (_selectedOption) {
       case _SelectedOption.NONE:
         return _buildOptionsScreen();
+
+      case _SelectedOption.SECURITY_QUESTIONS:
+        return _buildSecurityQuestionsScreen();
     }
   }
 
@@ -126,13 +134,20 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
         crossAxisAlignment: CrossAxisAlignment.stretch,
         children: <Widget>[
           Text(tr("Here are your options to reset your account:")),
-          Container(height: 15),
+          _Spacer(),
           OutlineButton.icon(
             onPressed: _openSendEmailDialog,
             icon: Icon(Icons.email),
             label: Text(tr("Send us an email to ask for help")),
           ),
-          Container(height: 15),
+          _Spacer(visible: _hasSecurityQuestions),
+          _hasSecurityQuestions
+              ? OutlineButton.icon(
+                  onPressed: _loadSecurityQuestions,
+                  icon: Icon(Icons.help_outline),
+                  label: Text(tr("Answer your security questions")),
+                )
+              : Container(),
         ],
       );
 
@@ -146,4 +161,60 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
               actions: <Widget>[CancelDialogButton()],
             ));
   }
+
+  /// Load security questions
+  void _loadSecurityQuestions() async {
+    _setLoading(true);
+    try {
+      _questions = await AccountHelper.getSecurityQuestions(_emailAddress);
+
+      _questionsControllers =
+          List.generate(_questions.length, (i) => TextEditingController());
+      _selectedOption = _SelectedOption.SECURITY_QUESTIONS;
+    } catch (e, s) {
+      print("Could not load security questions! $e\n$s");
+      showSimpleSnack(context, tr("Could not load your security questions!"));
+    }
+    _setLoading(false);
+  }
+
+  /// Show a screen to prompt security questions of the user
+  Widget _buildSecurityQuestionsScreen() {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: <Widget>[]
+        ..add(Text(tr("Please answer now your security questions:")))
+        ..add(_Spacer())
+        ..addAll(List.generate(_questions.length, _buildSecurityQuestionField))
+        ..add(_Spacer())
+        ..add(OutlineButton(
+          onPressed: null,
+          child: Text(tr("Submit")),
+        )),
+    );
+  }
+
+  Widget _buildSecurityQuestionField(int id) => TextField(
+        controller: _questionsControllers[id],
+        decoration: InputDecoration(
+          alignLabelWithHint: true,
+          labelText: _questions[id],
+        ),
+      );
+}
+
+class _Spacer extends StatelessWidget {
+  final bool visible;
+
+  const _Spacer({Key key, this.visible = true})
+      : assert(visible != null),
+        super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      height: visible ? 35 : null,
+    );
+  }
 }