From 23ce2c6d117e685397e540797f9f0207298a0a42 Mon Sep 17 00:00:00 2001
From: rcourtman <courtmanr@gmail.com>
Date: Sun, 9 Nov 2025 08:57:30 +0000
Subject: [PATCH] Add support for Windows 32-bit (windows-386) architecture
 (related to #674)

Adds build support for 32-bit Windows (windows-386) for pulse-host-agent.

Changes:
- Add windows-386 build to Dockerfile host-agent build section
- Add windows-386 binary copy and symlink to Dockerfile
- Add windows-386 build to build-release.sh
- Add windows-386 zip package to release artifacts
- Include windows-386 binary in standalone binary copies

This enables pulse-host-agent to run on 32-bit Windows systems, which are still relevant in legacy/industrial monitoring environments through late 2025.
---
 Dockerfile               | 10 ++++++++--
 scripts/build-release.sh |  9 +++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 6e11c51..83ffc82 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -130,7 +130,11 @@ RUN --mount=type=cache,id=pulse-go-mod,target=/go/pkg/mod \
     CGO_ENABLED=0 GOOS=windows GOARCH=arm64 go build \
       -ldflags="-s -w -X github.com/rcourtman/pulse-go-rewrite/internal/hostagent.Version=${VERSION}" \
       -trimpath \
-      -o pulse-host-agent-windows-arm64.exe ./cmd/pulse-host-agent
+      -o pulse-host-agent-windows-arm64.exe ./cmd/pulse-host-agent && \
+    CGO_ENABLED=0 GOOS=windows GOARCH=386 go build \
+      -ldflags="-s -w -X github.com/rcourtman/pulse-go-rewrite/internal/hostagent.Version=${VERSION}" \
+      -trimpath \
+      -o pulse-host-agent-windows-386.exe ./cmd/pulse-host-agent
 
 # Build pulse-sensor-proxy for all Linux architectures (for download endpoint)
 RUN --mount=type=cache,id=pulse-go-mod,target=/go/pkg/mod \
@@ -237,9 +241,11 @@ COPY --from=backend-builder /app/pulse-host-agent-darwin-amd64 /opt/pulse/bin/
 COPY --from=backend-builder /app/pulse-host-agent-darwin-arm64 /opt/pulse/bin/
 COPY --from=backend-builder /app/pulse-host-agent-windows-amd64.exe /opt/pulse/bin/
 COPY --from=backend-builder /app/pulse-host-agent-windows-arm64.exe /opt/pulse/bin/
+COPY --from=backend-builder /app/pulse-host-agent-windows-386.exe /opt/pulse/bin/
 # Create symlinks for Windows without .exe extension
 RUN ln -s pulse-host-agent-windows-amd64.exe /opt/pulse/bin/pulse-host-agent-windows-amd64 && \
-    ln -s pulse-host-agent-windows-arm64.exe /opt/pulse/bin/pulse-host-agent-windows-arm64
+    ln -s pulse-host-agent-windows-arm64.exe /opt/pulse/bin/pulse-host-agent-windows-arm64 && \
+    ln -s pulse-host-agent-windows-386.exe /opt/pulse/bin/pulse-host-agent-windows-386
 
 # Copy multi-arch pulse-sensor-proxy binaries for download endpoint
 COPY --from=backend-builder /app/pulse-sensor-proxy-linux-amd64 /opt/pulse/bin/
diff --git a/scripts/build-release.sh b/scripts/build-release.sh
index abe2eba..7f7bbbf 100755
--- a/scripts/build-release.sh
+++ b/scripts/build-release.sh
@@ -267,11 +267,19 @@ env GOOS=windows GOARCH=arm64 go build \
     -o "$BUILD_DIR/pulse-host-agent-windows-arm64.exe" \
     ./cmd/pulse-host-agent
 
+echo "Building host agent for Windows 386..."
+env GOOS=windows GOARCH=386 go build \
+    -ldflags="-s -w -X github.com/rcourtman/pulse-go-rewrite/internal/hostagent.Version=v${VERSION}" \
+    -trimpath \
+    -o "$BUILD_DIR/pulse-host-agent-windows-386.exe" \
+    ./cmd/pulse-host-agent
+
 # Package standalone host agent binaries
 tar -czf "$RELEASE_DIR/pulse-host-agent-v${VERSION}-darwin-amd64.tar.gz" -C "$BUILD_DIR" pulse-host-agent-darwin-amd64
 tar -czf "$RELEASE_DIR/pulse-host-agent-v${VERSION}-darwin-arm64.tar.gz" -C "$BUILD_DIR" pulse-host-agent-darwin-arm64
 zip -j "$RELEASE_DIR/pulse-host-agent-v${VERSION}-windows-amd64.zip" "$BUILD_DIR/pulse-host-agent-windows-amd64.exe"
 zip -j "$RELEASE_DIR/pulse-host-agent-v${VERSION}-windows-arm64.zip" "$BUILD_DIR/pulse-host-agent-windows-arm64.exe"
+zip -j "$RELEASE_DIR/pulse-host-agent-v${VERSION}-windows-386.zip" "$BUILD_DIR/pulse-host-agent-windows-386.exe"
 
 # Create universal tarball
 cd "$universal_dir"
@@ -300,6 +308,7 @@ cp "$BUILD_DIR/pulse-host-agent-darwin-amd64" "$RELEASE_DIR/"
 cp "$BUILD_DIR/pulse-host-agent-darwin-arm64" "$RELEASE_DIR/"
 cp "$BUILD_DIR/pulse-host-agent-windows-amd64.exe" "$RELEASE_DIR/"
 cp "$BUILD_DIR/pulse-host-agent-windows-arm64.exe" "$RELEASE_DIR/"
+cp "$BUILD_DIR/pulse-host-agent-windows-386.exe" "$RELEASE_DIR/"
 
 # Optionally package Helm chart
 if [ "${SKIP_HELM_PACKAGE:-0}" != "1" ]; then