#!/bin/bash
# generate BioOSM compatible "springs"
# Usage: studanky.sh osmdump.xml
# 
# Download OSM file to be passed as $1
# wget "http://osm.kyblsoft.cz/archiv/czech_republic-2019-11-03.osm.gz"
# gzip -kd ./czech_republic-2019-11-03.osm.gz
#
# Pozor ^^ sezere spoustu rameti
#

osm=$(cat "$1" | sed -e 's/<node/\'$'\a<node/g' -e 's/<\/node>/<\/node\'$'\a/g' -e 's/<way/\'$'\a<way/g' -e 's/<\/way>/<\/way>\'$'\a/g' -e 's/<relation/\'$'\a<relation/g' -e 's/<\/relation>/<\/relation>\'$'\a/g' | tr -d '\n' | tr '\a' '\n' | grep 'v="spring"' | grep 'k="natural"')

json='{"version":"'$(date --rfc-3339=seconds)'","std":['

while IFS='' read -r spr || [[ -n "$spr" ]]; do
	n=$(echo "$spr" | grep -oPe 'k="name" v="[^"]*"' | sed -e 's/k="name" v="//g' -e 's/"$//g')
	lat=$(echo "$spr" | grep -oPe ' lat="[^"]*"' | sed -e 's/ lat="//g' -e 's/"$//g')
	lon=$(echo "$spr" | grep -oPe ' lon="[^"]*"' | sed -e 's/ lon="//g' -e 's/"$//g')

	if [ "$lat" = "" ] || [ "$lon" = "" ]; then
		continue; # <way> a tak
	fi
	if [[ "$n" = "" ]]; then
		n="inkognito"
		>&2 echo -e "\033[34m $lat $lon \033[0m";
	fi

	json+="{"
	json+=" \"name\":\"$n\","
	json+=" \"lon\":\"$lon\","
	json+=" \"lat\":\"$lat\""
	json+="},"

	>&2 echo -e "\033[32m $n $lat $lon\033[0m"

done <<< $(echo "$osm")

echo "$json{}]}"