#!/bin/bash

[ -n "$1" -a -n "$2" ] || {
	echo "Usage: $0 INPUT_DIRECTORY OUTPUT_DIRECTORY"
	exit 1
}

temp=$(mktemp -d)
zoom=$(jq '.maxZoom // 10' "$1/layers.json")

mkdir "$temp/data"
for i in "$1/data/"*
do	
	ogrmerge.py -single -o "$temp/$(basename $i).json"  "$i"/* 
done



tippecanoe -aN -z"$zoom" -o "$temp/strecken.pmtiles" $temp/*.json

if [ -f "$1/points.json" ]
then
	ogr2ogr -t_srs WGS84 "$temp/points.json" "$1/points.json"
	tippecanoe -aN -z12 -r1 -o "$temp/points.pmtiles" "$temp/points.json"
	jq '.points_url = "points.pmtiles"' "$1/layers.json" > "$2/layers.json"
fi


mv $temp/*.pmtiles "$2"

rm -r $temp