From 01de393521f3eed4c6143e6c901312fc745d6f84 Mon Sep 17 00:00:00 2001
From: sneurlax <sneurlax@gmail.com>
Date: Thu, 25 Apr 2024 15:35:04 -0500
Subject: [PATCH] fetch paynym bot image over Tor

hard to test, as I cannot claim/generate nor detect a previously-claimed/generated nym over Tor due to
```
flutter: Log: [Info][2024-04-25 20:28:22.609Z]: HTTP.post() rethrew: Exception: Command handling failed. With error: serverError
flutter: #0      SocksSocket._handleCommandResponse (package:socks5_proxy/src/client/socks_client.dart:196:7)
flutter: <asynchronous suspension>
flutter: #1      SocksSocket.initialize (package:socks5_proxy/src/client/socks_client.dart:74:22)
flutter: <asynchronous suspension>
flutter: #2      SocksTCPClient.connect (package:socks5_proxy/src/client/socks_tcp_client.dart:70:20)
flutter: <asynchronous suspension>
flutter: #3      SocksTCPClient.assignToHttpClientWithSecureOptions.<anonymous closure> (package:socks5_proxy/src/client/socks_tcp_client.dart:46:40)
flutter: <asynchronous suspension>
flutter: #4      _ConnectionTarget.connect.<anonymous closure> (dart:_http/http_impl.dart:2490:32)
flutter: <asynchronous suspension>
flutter: #5      _HttpClient._openUrl.<anonymous closure> (dart:_http/http_impl.dart:2787:15)
flutter: <asynchronous suspension>
flutter: #6      HTTP.post (package:stackwallet/networking/http.dart:85:41)
flutter: <asynchronous suspension>
flutter: #7      PaynymIsApi._post (package:stackwallet/utilities/paynym_is_api.dart:54:22)
flutter: <asynchronous suspension>
flutter: #8      PaynymIsApi.nym (package:stackwallet/utilities/paynym_is_api.dart:267:22)
flutter: <asynchronous suspension>
flutter: #9      Wallet.refresh (package:stackwallet/wallets/wallet/wallet.dart:511:21)
flutter: <asynchronous suspension>
```
---
 lib/pages/paynym/subwidgets/paynym_bot.dart | 43 ++++++++++++++++-----
 1 file changed, 34 insertions(+), 9 deletions(-)

diff --git a/lib/pages/paynym/subwidgets/paynym_bot.dart b/lib/pages/paynym/subwidgets/paynym_bot.dart
index d8f645da3..082f7034e 100644
--- a/lib/pages/paynym/subwidgets/paynym_bot.dart
+++ b/lib/pages/paynym/subwidgets/paynym_bot.dart
@@ -8,8 +8,12 @@
  *
  */
 
+import 'dart:typed_data';
+
 import 'package:flutter/material.dart';
-import 'package:stackwallet/widgets/loading_indicator.dart';
+import 'package:stackwallet/networking/http.dart';
+import 'package:stackwallet/services/tor_service.dart';
+import 'package:stackwallet/utilities/prefs.dart';
 
 class PayNymBot extends StatelessWidget {
   const PayNymBot({
@@ -28,16 +32,37 @@ class PayNymBot extends StatelessWidget {
       child: SizedBox(
         width: size,
         height: size,
-        child: Image.network(
-          "https://paynym.is/$paymentCodeString/avatar",
-          loadingBuilder: (context, child, loadingProgress) =>
-              loadingProgress == null
-                  ? child
-                  : const Center(
-                      child: LoadingIndicator(),
-                    ),
+        child: FutureBuilder<Uint8List>(
+          future: _fetchImage(),
+          builder: (context, snapshot) {
+            if (snapshot.hasData) {
+              return Image.memory(snapshot.data!);
+            } else if (snapshot.hasError) {
+              return const Center(child: Icon(Icons.error));
+            } else {
+              return const Center(); // TODO [prio=low]: Make better loading indicator.
+            }
+          },
         ),
       ),
     );
   }
+
+  Future<Uint8List> _fetchImage() async {
+    final HTTP client = HTTP();
+    final Uri uri = Uri.parse("https://paynym.is/$paymentCodeString/avatar");
+
+    final response = await client.get(
+      url: uri,
+      proxyInfo: Prefs.instance.useTor
+          ? TorService.sharedInstance.getProxyInfo()
+          : null,
+    );
+
+    if (response.code == 200) {
+      return Uint8List.fromList(response.bodyBytes);
+    } else {
+      throw Exception('Failed to load image');
+    }
+  }
 }