# The secret broker: its own minimal image, its own process boundary.
# Shares the builder pattern with the server image; ships ONLY the broker
# binary.
FROM rust:1.96-slim AS builder
ARG TARGETARCH
# git + cmake are needed for the clawhdf5 git dependency (fetched via the git
# CLI — libgit2 chokes on Gitea smart-HTTP) and its zlib-ng C build (cmake).
RUN apt-get update \
    && apt-get install -y --no-install-recommends musl-tools git cmake make pkg-config \
    && rm -rf /var/lib/apt/lists/*
WORKDIR /src
COPY Cargo.toml Cargo.lock rust-toolchain.toml ./
COPY crates ./crates
COPY tools ./tools
COPY images/seccomp ./images/seccomp
COPY migrations ./migrations
COPY .sqlx ./.sqlx
# Install the musl target AFTER rust-toolchain.toml is in place, so rustup adds
# it to the toolchain the workspace pins (channel 1.96.0), not the base image's
# default. Doing this before the COPY installs into a toolchain cargo won't
# actually use, and the build then fails with E0463 (no core for musl).
RUN case "$TARGETARCH" in \
      arm64) echo aarch64-unknown-linux-musl > /rust-target ;; \
      *)     echo x86_64-unknown-linux-musl  > /rust-target ;; \
    esac \
    && rustup target add "$(cat /rust-target)"
ENV SQLX_OFFLINE=true
# Fetch git deps with the system git (libgit2 fails against Gitea smart-HTTP);
# build the zlib-ng C dep with the musl cross compiler for the static target.
ENV CARGO_NET_GIT_FETCH_WITH_CLI=true \
    CC_x86_64_unknown_linux_musl=musl-gcc \
    CC_aarch64_unknown_linux_musl=musl-gcc
RUN for attempt in 1 2 3; do \
        cargo build --release --target "$(cat /rust-target)" -p clawmates-broker && break; \
        rc=$?; \
        echo "cargo build failed with exit $rc on attempt $attempt/3 — retrying in $((attempt*10))s"; \
        sleep $((attempt*10)); \
    done \
    && cp "target/$(cat /rust-target)/release/clawmates-broker" /clawmates-broker

FROM scratch
COPY --from=builder /clawmates-broker /clawmates-broker
USER 10001:10001
ENTRYPOINT ["/clawmates-broker"]