ARG IMAGE_TAG
FROM gitea.jde.nz/public/dropshell-build-base:test AS builder

ARG PROJECT
ARG CMAKE_BUILD_TYPE=Debug

# Set working directory
WORKDIR /app

# Create cache directories
RUN mkdir -p /ccache /build-cache

# Set up ccache
ENV CCACHE_DIR=/ccache
ENV CCACHE_COMPILERCHECK=content
ENV CCACHE_MAXSIZE=2G

COPY . .

# Configure and build with ccache using cache mounts
RUN --mount=type=cache,target=/ccache \
    --mount=type=cache,target=/build \
    mkdir -p /build && \
    cmake -G Ninja -S /app -B /build \
    -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} \
    -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
    -DCMAKE_C_COMPILER_LAUNCHER=ccache \
    -DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=mold -static -g" \
    -DCMAKE_CXX_FLAGS="-g -fno-omit-frame-pointer" \
    -DCMAKE_C_FLAGS="-g -fno-omit-frame-pointer" \
    -DCMAKE_FIND_LIBRARY_SUFFIXES=".a" \
    -DZLIB_BUILD_SHARED=OFF \
    -DZLIB_BUILD_STATIC=ON \
    -DBUILD_SHARED_LIBS=OFF \
    -DPROJECT_NAME="${PROJECT}" \
    -DCMAKE_STRIP=OFF \
    -DIGNORE_DYNAMIC_LOADING=ON \
    -DOPENSSL_USE_STATIC_LIBS=TRUE \
    ${CMAKE_TOOLCHAIN_FILE:+-DCMAKE_TOOLCHAIN_FILE=$CMAKE_TOOLCHAIN_FILE}

# Build with cache mounts
RUN --mount=type=cache,target=/ccache \
    --mount=type=cache,target=/build \
    cmake --build /build --target run_prebuild_script

RUN --mount=type=cache,target=/ccache \
    --mount=type=cache,target=/build \
    cmake --build /build

# Copy the built executable to a regular directory for the final stage
RUN --mount=type=cache,target=/build \
    mkdir -p /output && \
    find /build -type f -executable -name "*${PROJECT}*" -exec cp {} /output/${PROJECT} \; || \
    find /build -type f -executable -exec cp {} /output/${PROJECT} \;

# Final stage that only contains the binary
FROM scratch AS project

ARG PROJECT

# Copy the actual binary from the regular directory
COPY --from=builder /output/${PROJECT} /${PROJECT}