From 1bde1f27b425795de8a6b919e0b25726c8bfc3c8 Mon Sep 17 00:00:00 2001
From: Mike Mueller <mike.mueller@cstudio.ch>
Date: Tue, 5 May 2026 14:54:22 +0200
Subject: [PATCH] ci(linux): sed-patch ffi.Int/ffi.Pointer prefix in
 generated_bridge.freezed.dart

---
 .gitea/workflows/build-linux.yml | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/.gitea/workflows/build-linux.yml b/.gitea/workflows/build-linux.yml
index 59228026d..7d7a84438 100644
--- a/.gitea/workflows/build-linux.yml
+++ b/.gitea/workflows/build-linux.yml
@@ -120,15 +120,31 @@ jobs:
             --c-output ./flutter/macos/Runner/bridge_generated.h
           cp ./flutter/macos/Runner/bridge_generated.h ./flutter/ios/Runner/bridge_generated.h
 
-          # Explicitly regenerate .freezed.dart files. fr_bridge_codegen 1.80.1
-          # is supposed to invoke build_runner internally, but on Debian 13's
-          # toolchain that auto-step has been observed to leave a stale or
-          # half-generated lib/generated_bridge.freezed.dart behind, which then
-          # fails compilation later in `flutter build linux` with errors like
-          # `Type 'Int' not found` (unprefixed FFI types). --delete-conflicting-outputs
-          # ensures the file is fully rebuilt.
+          # Explicitly regenerate .freezed.dart files.
           (cd flutter && dart run build_runner build --delete-conflicting-outputs)
 
+          # Workaround for a flutter_rust_bridge 1.80.1 + freezed interaction:
+          # the generated `lib/generated_bridge.freezed.dart` references FFI
+          # types like `Int` and `Pointer` *without* the `ffi.` prefix that the
+          # parent file's `import 'dart:ffi' as ffi;` requires. Result is
+          # "Type 'Int' not found" / "Type 'Pointer' not found" at build time.
+          # Add the prefix where it's missing -- only when the identifier is
+          # NOT already prefixed (no preceding `.`) and is NOT part of a longer
+          # token (no preceding alnum/underscore).
+          freezed=./flutter/lib/generated_bridge.freezed.dart
+          if [ -f "$freezed" ]; then
+              echo "Patching FFI type prefixes in $(basename "$freezed")"
+              sed -i -E '
+                  s/([^A-Za-z0-9_.])Pointer</\1ffi.Pointer</g
+                  s/([^A-Za-z0-9_.])Int([> ,)])/\1ffi.Int\2/g
+              ' "$freezed"
+              # Sanity: there should be no remaining unprefixed Int/Pointer in FFI position.
+              if grep -nE '[<,( ]Int[ >,)]|[<,( ]Pointer<' "$freezed" >/dev/null; then
+                  echo "WARNING: still found unprefixed FFI types after patch:"
+                  grep -nE '[<,( ]Int[ >,)]|[<,( ]Pointer<' "$freezed" | head
+              fi
+          fi
+
       - name: vcpkg install dependencies (x64-linux)
         shell: bash
         env: