FROM rust:1.95-trixie AS builder

ARG TARGETARCH

# Runtime deps for cpal (ALSA) and other libs
RUN apt-get update && apt-get install -y \
  build-essential \
  libunwind-dev \
  libasound2-dev \
  libdbus-1-dev \
  protobuf-compiler \
  curl \
  wget \
  zip \
  unzip \
  cmake

# Install Zig 0.16.0
RUN case "${TARGETARCH}" in \
      amd64) ZIG_ARCH="x86_64" ;; \
      arm64) ZIG_ARCH="aarch64" ;; \
      *) echo "Unsupported arch: ${TARGETARCH}" && exit 1 ;; \
    esac && \
    export VERSION=0.16.0 && \
    wget "https://ziglang.org/download/${VERSION}/zig-${ZIG_ARCH}-linux-${VERSION}.tar.xz" && \
    tar -xf "zig-${ZIG_ARCH}-linux-${VERSION}.tar.xz" && \
    mv "zig-${ZIG_ARCH}-linux-${VERSION}" /usr/local/zig && \
    ln -s /usr/local/zig/zig /usr/local/bin/zig

COPY . /app
WORKDIR /app

# Build the C firmware library only — run cargo + zig builds interactively
WORKDIR /app/build-lib
RUN make lib -j$(nproc)