# Build both binaries
# Use BUILDPLATFORM so Go runs natively, cross-compile for target arch
FROM --platform=$BUILDPLATFORM golang:1.25-trixie AS builder

ARG TARGETOS
ARG TARGETARCH
ARG BUILDARCH

# Install C cross-compiler for CGO when building arm64 from amd64
RUN if [ "$BUILDARCH" = "amd64" ] && [ "$TARGETARCH" = "arm64" ]; then \
        apt-get update && apt-get install -y gcc-aarch64-linux-gnu && rm -rf /var/lib/apt/lists/*; \
    fi

WORKDIR /workspace

# Copy go mod files and download deps
COPY go.mod go.sum ./
RUN go mod download

# Copy source code
COPY api/ api/
COPY cmd/ cmd/
COPY internal/ internal/

# Build runner (static, no CGO)
# Use -s -w to strip debug symbols and reduce binary size
RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} \
    go build -a -ldflags='-s -w -extldflags "-static"' \
    -o loom-runner ./cmd/runner

# Build controller (requires CGO for sqlite3)
# Use -s -w to strip debug symbols and reduce binary size
# Use cross-compiler for arm64 when building from amd64
RUN CC=$(if [ "$TARGETARCH" = "arm64" ] && [ "$BUILDARCH" = "amd64" ]; then echo "aarch64-linux-gnu-gcc"; else echo "gcc"; fi) && \
    CGO_ENABLED=1 CC=$CC GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} \
    go build -a -ldflags='-s -w' -o manager ./cmd/controller

# Unified image with both binaries
FROM gcr.io/distroless/base-debian13:nonroot
COPY --from=builder /workspace/manager /manager
COPY --from=builder /workspace/loom-runner /loom-runner

LABEL org.opencontainers.image.title="Loom" \
      org.opencontainers.image.description="Kubernetes Operator for Tangled Spindles " \
      org.opencontainers.image.authors="Evan Jarrett" \
      org.opencontainers.image.source="https://tangled.org/evan.jarrett.net/loom" \
      org.opencontainers.image.documentation="https://tangled.org/evan.jarrett.net/loom" \
      org.opencontainers.image.licenses="Apache-2.0" \
      org.opencontainers.image.version="latest"

ENTRYPOINT ["/manager"]