ARG PG_MAJOR=17

# ── Stage 1: Compile against PostgreSQL on Ubuntu 22.04 ─────
# Ubuntu Jammy matches TimescaleDB-HA's glibc (2.35).
# Building on Debian Bookworm (glibc 2.36) risks symbol version
# mismatches when the .so loads in TimescaleDB's runtime.
FROM ubuntu:22.04 AS builder

ARG PG_MAJOR
ARG DEBIAN_FRONTEND=noninteractive

# PGDG apt repository (same source TimescaleDB-HA uses)
RUN apt-get update && apt-get install -y --no-install-recommends \
        ca-certificates curl gnupg lsb-release && \
    curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc \
        | gpg --dearmor -o /usr/share/keyrings/postgresql.gpg && \
    echo "deb [signed-by=/usr/share/keyrings/postgresql.gpg] \
        http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" \
        > /etc/apt/sources.list.d/pgdg.list && \
    apt-get update && apt-get install -y --no-install-recommends \
        postgresql-${PG_MAJOR} \
        postgresql-server-dev-${PG_MAJOR} \
        gcc make \
        liblapack-dev libblas-dev && \
    rm -rf /var/lib/apt/lists/*

# Copy source tree (submodule content included as regular files)
WORKDIR /build/pg_orrery
COPY . .

ENV PG_CONFIG=/usr/lib/postgresql/${PG_MAJOR}/bin/pg_config

# Build extension
RUN make PG_CONFIG=${PG_CONFIG}

# Install to system location (needed for installcheck)
RUN make PG_CONFIG=${PG_CONFIG} install

# Run all 14 regression test suites against a throwaway cluster
RUN su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/initdb -D /tmp/pgtest" && \
    su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/pg_ctl -D /tmp/pgtest -l /tmp/pgtest.log start" && \
    su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/createuser -s root" && \
    make PG_CONFIG=${PG_CONFIG} installcheck && \
    su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/pg_ctl -D /tmp/pgtest stop"

# Standalone unit tests (no PostgreSQL dependency)
RUN make test-de-reader
RUN make test-od-math

# Capture artifacts under /pg_orrery prefix for the next stage
RUN make PG_CONFIG=${PG_CONFIG} DESTDIR=/pg_orrery install


# ── Stage 2: Minimal artifact (COPY --from target) ──────────
# ~525 KB total: .so + .control + .sql + init script.
# Downstream images (TimescaleDB-HA, vanilla PG) pull from here.
FROM scratch AS artifact

COPY --from=builder /pg_orrery/ /
COPY docker/020_install_pg_orrery.sh /docker-entrypoint-initdb.d/


# ── Stage 3: Standalone dev/test image ───────────────────────
# Ready-to-run PostgreSQL with pg_orrery pre-installed.
# For development, CI, and standalone experiments.
#
# Optional DE ephemeris at runtime (recommended):
#   docker run -v /path/to/de440.bin:/var/lib/postgresql/pg_orrery/de440.bin pg_orrery
#   Then: ALTER SYSTEM SET pg_orrery.ephemeris_path = '/var/lib/postgresql/pg_orrery/de440.bin';
#
# Or bake into the image (115 MB for DE440, 3.1 GB for DE441):
#   Place the DE file in the build context, then:
#   docker build --build-arg DE_FILE=de440.bin -t pg_orrery:de440 .
FROM postgres:${PG_MAJOR}-bookworm AS standalone

# LAPACK/BLAS runtime for OD solver (dgelss_)
RUN apt-get update && apt-get install -y --no-install-recommends \
        liblapack3 libblas3 && \
    rm -rf /var/lib/apt/lists/*

COPY --from=artifact / /

# Create the pg_orrery data directory for DE ephemeris files
RUN mkdir -p /var/lib/postgresql/pg_orrery && \
    chown postgres:postgres /var/lib/postgresql/pg_orrery