#!/usr/bin/env bash
# Download a small, versionable 2MASS PSC field from the IRSA Gator API.
#
# The query is intentionally a 0.5-degree cone instead of the full PSC: the
# all-sky catalog contains hundreds of millions of sources and is not suitable
# for this repository.  The output remains an original IPAC table so no
# photometry or missing-value handling is silently changed.
set -euo pipefail

repo_root=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
output="$repo_root/assets/2mass/raw/2mass_psc_m31_0p5deg.tbl"
tmp_output=$(mktemp "${TMPDIR:-/tmp}/2mass_psc_m31_XXXXXX.tbl")
trap 'rm -f "$tmp_output"' EXIT

mkdir -p "$(dirname -- "$output")"

curl --fail --silent --show-error --location --get \
  'https://irsa.ipac.caltech.edu/cgi-bin/Gator/nph-query' \
  --data-urlencode 'catalog=fp_psc' \
  --data-urlencode 'spatial=cone' \
  --data-urlencode 'objstr=10.6847083 41.26875' \
  --data-urlencode 'radius=0.5' \
  --data-urlencode 'radunits=deg' \
  --data-urlencode 'outfmt=1' \
  --data-urlencode 'selcols=designation,ra,dec,j_m,h_m,k_m' \
  --data-urlencode 'outrows=50000' \
  -o "$tmp_output"

grep -q "2MASS All-Sky Point Source Catalog" "$tmp_output"
grep -q '^| *designation|' "$tmp_output"
mv "$tmp_output" "$output"
trap - EXIT

printf 'Wrote %s\n' "$output"