contact invitation algorithm

lib/components/send_invite_dialog.dart

@@ -0,0 +1,162 @@
+import 'package:awesome_extensions/awesome_extensions.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_translate/flutter_translate.dart';
+import 'package:quickalert/quickalert.dart';
+
+import '../entities/local_account.dart';
+import '../tools/tools.dart';
+import 'contact_invitation_display.dart';
+import 'enter_pin.dart';
+
+class SendInviteDialog extends ConsumerStatefulWidget {
+  const SendInviteDialog({super.key});
+
+  @override
+  SendInviteDialogState createState() => SendInviteDialogState();
+}
+
+class SendInviteDialogState extends ConsumerState<SendInviteDialog> {
+  final messageTextController = TextEditingController(
+      text: translate('send_invite_dialog.connect_with_me'));
+
+  EncryptionKeyType _encryptionKeyType = EncryptionKeyType.none;
+  String _encryptionKey = '';
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  Future<void> _onNoneEncryptionSelected(bool selected) async {
+    setState(() {
+      if (selected) {
+        _encryptionKeyType = EncryptionKeyType.none;
+      }
+    });
+  }
+
+  Future<void> _onPinEncryptionSelected(bool selected) async {
+    final description = translate('send_invite_dialog.pin_description');
+    final pin = await showDialog<String>(
+        context: context,
+        builder: (context) => EnterPinDialog(description: description));
+    if (pin == null) {
+      return;
+    }
+    // ignore: use_build_context_synchronously
+    if (!context.mounted) {
+      return;
+    }
+    final matchpin = await showDialog<String>(
+        context: context,
+        builder: (context) => EnterPinDialog(
+              matchPin: pin,
+              description: description,
+            ));
+    if (matchpin == null) {
+      return;
+    } else if (pin == matchpin) {
+      setState(() {
+        _encryptionKeyType = EncryptionKeyType.pin;
+        _encryptionKey = pin;
+      });
+    } else {
+      // ignore: use_build_context_synchronously
+      if (!context.mounted) {
+        return;
+      }
+      showErrorToast(
+          context, translate('send_invite_dialog.pin_does_not_match'));
+      setState(() {
+        _encryptionKeyType = EncryptionKeyType.none;
+        _encryptionKey = '';
+      });
+    }
+  }
+
+  Future<void> _onPasswordEncryptionSelected(bool selected) async {
+    setState(() {
+      if (selected) {
+        _encryptionKeyType = EncryptionKeyType.password;
+      }
+    });
+  }
+
+  Future<void> _onGenerateButtonPressed() async {
+    await showDialog<void>(
+        context: context,
+        builder: (context) => ContactInvitationDisplayDialog());
+    // if (ret == null) {
+    //   return;
+    // }
+    Navigator.of(context).pop();
+  }
+
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    //final scale = theme.extension<ScaleScheme>()!;
+    final textTheme = theme.textTheme;
+    return SizedBox(
+      height: 400,
+      child: SingleChildScrollView(
+        padding: const EdgeInsets.all(8),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          mainAxisSize: MainAxisSize.min,
+          children: <Widget>[
+            Text(
+              translate('send_invite_dialog.message_to_contact'),
+            ).paddingAll(8),
+            TextField(
+              controller: messageTextController,
+              decoration: InputDecoration(
+                  border: const OutlineInputBorder(),
+                  hintText: translate('send_invite_dialog.enter_message_hint'),
+                  labelText: translate('send_invite_dialog.message')),
+            ).paddingAll(8),
+            const SizedBox(height: 10),
+            Text(translate('send_invite_dialog.protect_this_invitation'),
+                    style: textTheme.labelLarge)
+                .paddingAll(8),
+            Wrap(spacing: 5, children: [
+              ChoiceChip(
+                label: Text(translate('send_invite_dialog.unlocked')),
+                selected: _encryptionKeyType == EncryptionKeyType.none,
+                onSelected: _onNoneEncryptionSelected,
+              ),
+              ChoiceChip(
+                label: Text(translate('send_invite_dialog.numeric_pin')),
+                selected: _encryptionKeyType == EncryptionKeyType.pin,
+                onSelected: _onPinEncryptionSelected,
+              ),
+              ChoiceChip(
+                label: Text(translate('send_invite_dialog.password')),
+                selected: _encryptionKeyType == EncryptionKeyType.password,
+                onSelected: _onPasswordEncryptionSelected,
+              )
+            ]).paddingAll(8),
+            Container(
+              width: double.infinity,
+              height: 60,
+              padding: const EdgeInsets.all(8),
+              child: ElevatedButton(
+                onPressed: _onGenerateButtonPressed,
+                child: Text(
+                  translate('send_invite_dialog.generate'),
+                ),
+              ),
+            ),
+            Text(translate('send_invite_dialog.note')).paddingAll(8),
+            Text(
+              translate('send_invite_dialog.note_text'),
+              style: Theme.of(context).textTheme.bodySmall,
+            ).paddingAll(8),
+          ],
+        ),
+      ),
+    );
+  }
+}