# PostGIS spatial stack for the trip planner.
#
#   docker compose up -d postgis     # start the DB (schema.sql runs on first boot)
#   ./import.sh ../osm/nh.osm.pbf   # import an OSM extract (one-shot osm2pgsql)
#   docker compose run --rm spatiald # start the query service on :5005
#
# The PBF extracts live in ../osm (gitignored). osm2pgsql runs as a one-shot
# container so the host needs no osm2pgsql/osmium installation.
services:
  postgis:
    image: postgis/postgis:16-3.4
    container_name: trips-postgis
    environment:
      POSTGRES_DB: trips
      POSTGRES_USER: trips
      POSTGRES_PASSWORD: trips
    ports:
      - "5432:5432"
    volumes:
      - pgdata:/var/lib/postgresql/data
      # initdb scripts run in lexicographic order, once, on an empty volume
      - ./schema.sql:/docker-entrypoint-initdb.d/10-schema.sql:ro
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U trips -d trips"]
      interval: 5s
      timeout: 3s
      retries: 12

  # One-shot importer. `docker compose run --rm importer` (or import.sh)
  # loads the PBF named in PBF_FILE into the DB. The osm2pgsql image runs
  # as uid 1001 and needs the PBF readable — import.sh bind-mounts ../osm.
  importer:
    image: osm2pgsql/osm2pgsql:16
    user: "1001:1001"
    network_mode: "service:postgis"
    environment:
      PBF_FILE: /data/nh.osm.pbf
      # --create --clean: fresh load every time (extracts are small enough);
      # slim mode keeps the RAM footprint sane; disable-operations saves time.
      ARGS: >-
        --host=postgis --port=5432 --database=trips --user=trips
        --password=trips --create --clean --slim
        --flat-nodes=/tmp/flat.nodes --disable-operations
        --import-strips=10
    volumes:
      - ../osm:/data:ro

  spatiald:
    build: .
    container_name: trips-spatiald
    environment:
      SPATIAL_DSN: "host=postgis port=5432 user=trips password=trips dbname=trips sslmode=disable"
    ports:
      - "5005:5005"
    depends_on:
      postgis:
        condition: service_healthy

volumes:
  pgdata: