# Reproducible cross-compilation environment for Windows trampolines.
#
# All toolchain versions are pinned for binary reproducibility.
# This image provides the build environment; the workspace is bind-mounted
# at runtime by scripts/build-trampolines.sh.

ARG UBUNTU_SNAPSHOT=20260127T200000Z

ARG RUST_NIGHTLY=nightly-2026-05-06

ARG XWIN_SDK_VERSION=10.0.22621
ARG XWIN_CRT_VERSION=14.44.17.14

FROM docker.io/ubuntu:26.04@sha256:4095ef613201918336b5d7d00be15d8b09c72ddb77c80bca249c255887a64d87 AS base

ARG RUST_NIGHTLY
ARG UBUNTU_SNAPSHOT

ENV HOME=/app
ENV CARGO_HOME=${HOME}/rust/cargo
ENV RUSTUP_HOME=${HOME}/rust/rustup
ENV XWIN_CACHE_DIR=${HOME}/xwin-cache

WORKDIR ${HOME}

# Install build dependencies
RUN apt install -y --update ca-certificates && \
    apt install -y --update --snapshot ${UBUNTU_SNAPSHOT} \
        curl \
        llvm \
        clang \
        lld \
        python3 \
    && ln -s /usr/bin/llvm-mt /usr/bin/mt.exe \
    && rm -rf /var/lib/apt/lists/*

# Install Rust nightly toolchain with Windows targets
ARG RUSTUP_VERSION=1.29.2
RUN curl --proto '=https' --tlsv1.2 -sSf \
    "https://static.rust-lang.org/rustup/archive/${RUSTUP_VERSION}/$(uname -m)-unknown-linux-gnu/rustup-init" \
    -o rustup-init \
    && chmod +x rustup-init \
    && ./rustup-init -y --default-toolchain=${RUST_NIGHTLY} --profile=minimal \
    && rm rustup-init

ENV PATH="${CARGO_HOME}/bin:${PATH}"

RUN rustup component add rust-src --toolchain ${RUST_NIGHTLY}-x86_64-unknown-linux-gnu && \
    rustup target add --toolchain ${RUST_NIGHTLY} \
        i686-pc-windows-msvc \
        x86_64-pc-windows-msvc \
        aarch64-pc-windows-msvc

# Install cargo-xwin
FROM base AS cargo-xwin

COPY --from=ghcr.io/astral-sh/uv:0.13.0@sha256:cdc6093146eb3ff6a40107b38f008b789e050e77ad87865e381d9917da55a168 /uv /usr/local/bin/uv

COPY toolchain/pyproject.toml toolchain/uv.lock ./
RUN uv sync --locked --no-dev --python /usr/bin/python3

# Prefetch the Windows SDK/CRT
FROM base AS xwin-cache

ARG XWIN_SDK_VERSION
ARG XWIN_CRT_VERSION

COPY --from=cargo-xwin ${HOME}/.venv/bin/cargo-xwin /usr/local/bin/cargo-xwin

RUN cargo xwin cache xwin \
      --xwin-sdk-version ${XWIN_SDK_VERSION} \
      --xwin-crt-version ${XWIN_CRT_VERSION} \
      --xwin-arch x86,x86_64,aarch64

FROM base

COPY --from=xwin-cache ${HOME}/xwin-cache ${HOME}/xwin-cache
RUN chmod a+rwX ${HOME}/xwin-cache
COPY --from=cargo-xwin ${HOME}/.venv/bin/cargo-xwin /usr/local/bin/cargo-xwin
COPY --from=cargo-xwin /usr/local/bin/uv /usr/local/bin/uv