# Sidecar
# The container needs to provide and build two components:
# * barman-cloud
# * instance plugin
# Both components are built before going into the final container

# Build the manager binary
FROM --platform=$BUILDPLATFORM golang:1.25.6 AS gobuilder
ARG TARGETOS
ARG TARGETARCH

WORKDIR /workspace
# Copy the Go Modules manifests
COPY ../go.mod go.mod
COPY ../go.sum go.sum
# cache deps before building and copying source so that we don't need to re-download as much
# and so that source changes don't invalidate our downloaded layer
RUN go mod download

ENV GOCACHE=/root/.cache/go-build
ENV GOMODCACHE=/go/pkg/mod

# Copy the go source
COPY ../cmd/manager/main.go cmd/manager/main.go
COPY ../api/ api/
COPY ../internal/ internal/

# Build
# the GOARCH has not a default value to allow the binary be built according to the host where the command
# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
    CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/manager/main.go

# Build wheel files for Python dependencies
FROM python:3.13-slim-trixie AS pythonbuilder
WORKDIR /build

# Install build dependencies
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        postgresql-common \
        build-essential && \
    /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y && \
    apt-get install -y --no-install-recommends libpq-dev

# Copy requirements
COPY containers/sidecar-requirements.txt .

# Build wheels with pip cache mount
RUN --mount=type=cache,target=/root/.cache/pip \
    pip wheel --wheel-dir=/wheels -r sidecar-requirements.txt

# Final sidecar image
FROM python:3.13-slim-trixie

ENV SUMMARY="CloudNativePG Barman plugin" \
    DESCRIPTION="Container image that provides the barman-cloud sidecar"

LABEL summary="$SUMMARY" \
      description="$DESCRIPTION" \
      io.k8s.display-name="$SUMMARY" \
      io.k8s.description="$DESCRIPTION" \
      name="CloudNativePG Barman plugin sidecar" \
      vendor="CloudNativePG Contributors" \
      url="https://cloudnative-pg.io/" \
      version="" \
      release="1"

# Install runtime dependencies
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        postgresql-common && \
    /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y && \
    apt-get install -y --no-install-recommends libpq5 && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# Install wheels using bind mount (wheels not included in final layers)
RUN --mount=type=bind,from=pythonbuilder,source=/wheels,target=/wheels \
    pip install --no-cache-dir /wheels/*.whl

# Ensure all Python bytecode is freshly compiled with correct timestamps
RUN python -m compileall -q /usr/local/lib/python3.13

# Copy Go manager binary
COPY --from=gobuilder /workspace/manager /manager

USER 26:26
ENTRYPOINT ["/manager"]