FROM rust:latest AS builder

# install build-time deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    lld \ 
    libclang-dev liburing-dev

# Set up Rust toolchain
WORKDIR /app
COPY ./rust-toolchain.toml .
RUN rustc --version

# Developer tool versions
# renovate: datasource=github-releases depName=cargo-binstall packageName=cargo-bins/cargo-binstall
ENV BINSTALL_VERSION=1.10.17
# renovate: github-releases depName=cargo-sbom packageName=psastras/sbom-rs
ENV CARGO_SBOM_VERSION=0.9.1

RUN curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
RUN cargo binstall --no-confirm cargo-sbom --version $CARGO_SBOM_VERSION

# Get source
COPY . .

# Build binary
# We disable incremental compilation to save disk space, as it only produces a minimal speedup for this case.
ENV CARGO_INCREMENTAL=0

ARG TARGET_CPU
RUN if [ -n "${TARGET_CPU}" ]; then \
    echo "CFLAGS='-march=${TARGET_CPU}'" >> /etc/environment && \
    echo "CXXFLAGS='-march=${TARGET_CPU}'" >> /etc/environment && \
    echo "RUSTFLAGS='-C target-cpu=${TARGET_CPU}'" >> /etc/environment; \
fi

RUN mkdir /out
RUN --mount=type=cache,target=/usr/local/cargo/registry \
    --mount=type=cache,target=/usr/local/cargo/git/db \
    --mount=type=cache,target=/app/target \
    . /etc/environment && echo $RUSTFLAGS && \
    cargo build --locked --release && \
    cp ./target/release/conduwuit /out/app

RUN cargo sbom > /out/sbom.spdx.json

# find dynamically linked dependencies
RUN mkdir /out/libs \
    && ldd /out/app | grep '=>' | awk '{print $(NF-1)}' | xargs -I {} cp {} /out/libs/
# libraries with a hardcoded path, like ld
# (see for example https://github.com/vlang/v/issues/8682)
# Excluding linux-vdso.so, as it is a part of the kernel
RUN mkdir /out/libs-root \
    && ldd /out/app | grep -v '=>' | grep -v 'linux-vdso.so' | awk '{print $(NF-1)}' | xargs -I {} install -D {} /out/libs-root{}
# RUN ldd /out/app
# ldd /out/app | grep -v 'linux-vdso.so' | awk '{print $(NF-1)}'
# RUN ls /libs

FROM scratch

WORKDIR /

# Copy root certs for tls into image
# You can also mount the certs from the host
# --volume /etc/ssl/certs:/etc/ssl/certs:ro
COPY --from=rust:latest /etc/ssl/certs /etc/ssl/certs

# Copy our build
COPY --from=builder /out/app ./app 
# Copy SBOM
COPY --from=builder /out/sbom.spdx.json ./sbom.spdx.json

# Copy hardcoded dynamic libraries
COPY --from=builder /out/libs-root /
# Copy dynamic libraries
COPY --from=builder /out/libs /libs
# Tell Linux where to find our libraries
ENV LD_LIBRARY_PATH=/libs


CMD ["/app"]