Merge branch 'main' into linux_monero_dart

pubspec_base.yaml

@@ -123,6 +123,7 @@ dev_dependencies:
     git:
       url: https://github.com/cake-tech/google-translator.git
       version: 1.0.0
+  archive: ^3.6.1
 
 dependency_overrides:
   bech32:

tool/download_moneroc_prebuilds.dart

@@ -0,0 +1,50 @@
+import 'package:dio/dio.dart';
+import 'package:archive/archive_io.dart';
+
+final _dio = Dio();
+
+final List<String> triplets = [
+  "x86_64-linux-gnu", // linux desktop - majority of users onlinux 
+  // "i686-linux-gnu", // not supported by cake
+  // "i686-meego-linux-gnu", // sailfishos (emulator)- not supported by cake
+  // "aarch64-linux-gnu", // not (yet) supported by cake - (mostly) mobile linux
+  // "aarch64-meego-linux-gnu", // sailfishos - not supported by cake
+  "x86_64-linux-android",
+  // "i686-linux-android", // not supported by monero_c - mostly old android emulators
+  "aarch64-linux-android",
+  "armv7a-linux-androideabi",
+  // "i686-w64-mingw32", // 32bit windows - not supported by monero_c
+  "x86_64-w64-mingw32",
+  // "x86_64-apple-darwin11", // Intel macbooks (contrib) - not used by cake 
+  // "aarch64-apple-darwin11", // apple silicon macbooks (contrib) - not used by cake
+  // "host-apple-darwin", // not available on CI (yet)
+  // "x86_64-host-apple-darwin", // not available on CI (yet)
+  "aarch64-host-apple-darwin", // apple silicon macbooks (local builds)
+  "host-apple-ios",
+];
+
+Future<void> main() async {
+  final resp = await _dio.get("https://api.github.com/repos/mrcyjanek/monero_c/releases");
+  final data = resp.data[0];
+  final tagName = data['tag_name'];
+  print("Downloading artifacts for: ${tagName}");
+  final assets = data['assets'] as List<dynamic>;
+  for (var i = 0; i < assets.length; i++) {
+    for (var triplet in triplets) {
+      final asset = assets[i];
+      final filename = asset["name"] as String;
+      if (!filename.contains(triplet)) continue;
+      final coin = filename.split("_")[0];
+      String localFilename = filename.replaceAll("${coin}_${triplet}_", "");
+      localFilename = "scripts/monero_c/release/${coin}/${triplet}_${localFilename}";
+      final url = asset["browser_download_url"] as String;
+      print("- downloading $localFilename");
+      await _dio.download(url, localFilename);
+      print("  extracting $localFilename");
+      final inputStream = InputFileStream(localFilename);
+      final archive = XZDecoder().decodeBuffer(inputStream);
+      final outputStream = OutputFileStream(localFilename.replaceAll(".xz", ""));
+      outputStream.writeBytes(archive);
+    }
+  }
+}