added bootstrap buildings

scripts/load_buildings.sh

@@ -6,6 +6,73 @@ if [ "${1:-}" = "" ]; then
   exit 2
 fi
 
-echo "Building import via osm2pgsql will be implemented in the PostGIS stage." >&2
-echo "Input file: $1" >&2
-exit 1
+PBF_PATH=$1
+if [ ! -f "$PBF_PATH" ]; then
+  echo "OSM PBF file not found: $PBF_PATH" >&2
+  exit 2
+fi
+
+if [ -f .env ]; then
+  set -a
+  # shellcheck disable=SC1091
+  . ./.env
+  set +a
+fi
+
+DB_NAME=${POSTGRES_DB:-radio}
+DB_USER=${POSTGRES_USER:-radio}
+DB_PASSWORD=${DB_PASSWORD:-radio}
+POSTGIS_SERVICE=${POSTGIS_SERVICE:-postgis}
+OSM2PGSQL_IMAGE=${OSM2PGSQL_IMAGE:-osm2pgsql/osm2pgsql:latest}
+
+SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+REPO_DIR=$(CDPATH= cd -- "$SCRIPT_DIR/.." && pwd)
+PBF_DIR=$(CDPATH= cd -- "$(dirname -- "$PBF_PATH")" && pwd)
+PBF_FILE=$(basename -- "$PBF_PATH")
+POSTGIS_CONTAINER=$(docker compose ps -q "$POSTGIS_SERVICE")
+
+if [ -z "$POSTGIS_CONTAINER" ]; then
+  echo "PostGIS container is not running. Start it with: docker compose up -d postgis" >&2
+  exit 1
+fi
+
+NETWORK=$(docker inspect "$POSTGIS_CONTAINER" \
+  --format '{{range $name, $_ := .NetworkSettings.Networks}}{{println $name}}{{end}}' \
+  | head -n 1)
+
+echo "Ensure PostGIS extension exists"
+docker compose exec -T "$POSTGIS_SERVICE" psql -U "$DB_USER" -d "$DB_NAME" \
+  < "$REPO_DIR/db/init/01_postgis.sql"
+
+echo "Drop previous buildings table"
+docker compose exec -T "$POSTGIS_SERVICE" psql -U "$DB_USER" -d "$DB_NAME" \
+  -c "DROP TABLE IF EXISTS buildings CASCADE;"
+
+echo "Import buildings from $PBF_PATH"
+docker run --rm \
+  --network "$NETWORK" \
+  -e PGPASSWORD="$DB_PASSWORD" \
+  -v "$PBF_DIR:/osm:ro" \
+  -v "$SCRIPT_DIR:/scripts:ro" \
+  "$OSM2PGSQL_IMAGE" \
+  -H "$POSTGIS_SERVICE" \
+  -P 5432 \
+  -U "$DB_USER" \
+  -d "$DB_NAME" \
+  --create \
+  --slim \
+  --drop \
+  --latlong \
+  --output flex \
+  --style /scripts/osm2pgsql_buildings.lua \
+  "/osm/$PBF_FILE"
+
+echo "Create buildings indexes"
+docker compose exec -T "$POSTGIS_SERVICE" psql -U "$DB_USER" -d "$DB_NAME" <<'SQL'
+CREATE INDEX IF NOT EXISTS buildings_geom_gix ON buildings USING GIST (geom);
+CREATE INDEX IF NOT EXISTS buildings_height_idx ON buildings (height_m);
+CREATE INDEX IF NOT EXISTS buildings_type_idx ON buildings (building_type);
+ANALYZE buildings;
+SQL
+
+echo "Buildings import complete"