#!/bin/sh
# Fetch a boundary file!
# # Author: Dan Jacobson https://www.jidanni.org/
# Copyright: https://www.gnu.org/licenses/gpl.html
# Created: 2023-09-04
# Last-Updated: 2023-09-07T09:05:53+0000
#     Update #: 4

# I found a site where this is less of a mess:
set -ue
osm_relation_id=$1
mapit_id=$(
    curl --silent --fail-with-body --show-error --location \
	 https://global.mapit.mysociety.org/code/osm_rel/$osm_relation_id |
	perl -nwle '/\d+/ && print $&;')
curl --silent --fail-with-body --show-error https://global.mapit.mysociety.org/area/$mapit_id.kml -o $1.kml