# Bake PostgreSQL 18 (server + pre-seeded app roles/databases) into the Legatus Qt6
# build image, so any container from legatus-qt6-prebuilt:latest has a local DB ready.
#
#   build : docker build -f Dockerfile.legatus-db -t legatus-qt6-prebuilt:latest .
#   start : legatus-db-up            # maps EXCDBS01/EXCADB01 -> 127.0.0.1 and starts pg
#
# Notes:
#  - The cluster + roles/dbs live in the image's /var/lib/postgresql/18/main; each new
#    container gets a fresh copy (in its writable layer). Start with `legatus-db-up`.
#  - /etc/hosts is docker-managed, so EXCDBS01/EXCADB01 are added by legatus-db-up (or
#    pass --add-host EXCDBS01:127.0.0.1 --add-host EXCADB01:127.0.0.1 at docker run).

FROM legatus-qt6-prebuilt:orig

ENV DEBIAN_FRONTEND=noninteractive

# Install the server; init the cluster with the credentials the DB tools use:
#   dbUpdate      -> postgres / postgres
#   dbAdministration -> ctc_sv / postgres
RUN apt-get update \
 && apt-get install -y postgresql-18 \
 && rm -rf /var/lib/apt/lists/* \
 && pg_ctlcluster 18 main start \
 && sleep 2 \
 && su postgres -c "psql -v ON_ERROR_STOP=1 -c \"ALTER USER postgres PASSWORD 'postgres'\"" \
 && su postgres -c "psql -v ON_ERROR_STOP=1 -c \"CREATE ROLE ctc_sv LOGIN PASSWORD 'postgres' CREATEDB\"" \
 && su postgres -c "createdb -O postgres lts_ets_pro" \
 && su postgres -c "createdb -O postgres dbAdmin" \
 && pg_ctlcluster 18 main stop

# Convenience one-shot: map the hostnames + start the cluster (idempotent).
RUN printf '%s\n' \
    '#!/usr/bin/env bash' \
    '# Map the DB hostnames to the local server and start PostgreSQL 18.' \
    'set -uo pipefail' \
    'grep -qE "EXCDBS01" /etc/hosts || echo "127.0.0.1 EXCDBS01 EXCADB01" >> /etc/hosts' \
    'pg_ctlcluster 18 main start || true' \
    'sleep 1' \
    'pg_isready -h 127.0.0.1 -p 5432' \
    > /usr/local/bin/legatus-db-up \
 && chmod +x /usr/local/bin/legatus-db-up