#!/bin/bash
ulimit -m 4194304 -v 4194304
set -e

if [ -f /tmp/planetdump.lock ]; then
	if [ "$(ps -p `cat /tmp/planetdump.lock` | wc -l)" -gt 1 ]; then
		# process is still running
		echo Error: Another planetdump is running
		exit 1
	else
		# process not running, but lock file not deleted?
		rm /tmp/planetdump.lock
	fi
fi

#Create Lock
echo $$ > /tmp/planetdump.lock


cur_date=`date +%y%m%d`
cur_year=`date +%Y`
cur_planet=planet-${cur_date}.osm
cur_changeset=changesets-${cur_date}.osm
planet_dir=/store/planet/

export CONNECTION_PARAMS='dbname=openstreetmap host=localhost user=planetdump password=<%= @password %>'
export PATH='/usr/local/bin:/usr/bin:/bin:/usr/bin/X11'


if [ \! -d ${planet_dir}/planet/ ]
	then
		echo ${planet_dir}planet/ does not exist
		exit 1
	fi
if [ \! -d ${planet_dir}/planet/${cur_year}/ ]; then mkdir ${planet_dir}/planet/${cur_year}/; fi
cd ${planet_dir}/planet/${cur_year}/

/opt/planetdump/planet06_pg | pbzip2 -p6 -6c > .${cur_planet}.bz2.new
/opt/planetdump/planet06_pg --changesets | pbzip2 -p6 -9c > .${cur_changeset}.bz2.new

planet_size=$(du -sb .${cur_planet}.bz2.new | awk '{ print $1 }')
changeset_size=$(du -sb .${cur_changeset}.bz2.new | awk '{ print $1 }')
if ((planet_size<32000000000)); then
	echo Planet .${cur_planet}.bz2.new too small
	exit 1
fi
if ((changeset_size<720000000)); then
	echo Changeset .${cur_changeset}.bz2.new too small
	exit 1
fi

mv .${cur_planet}.bz2.new ${cur_planet}.bz2
mv .${cur_changeset}.bz2.new ${cur_changeset}.bz2
md5sum ${cur_planet}.bz2 > ${cur_planet}.bz2.md5
md5sum ${cur_changeset}.bz2 > ${cur_changeset}.bz2.md5

#link planet latest to the new file
cd ${planet_dir}/planet/

ln -fs ${cur_year}/${cur_planet}.bz2 planet-latest.osm.bz2
ln -fs ${cur_year}/${cur_changeset}.bz2 changesets-latest.osm.bz2

# mangle md5 files for 'latest' ones
rm -f planet-latest.osm.bz2.md5
rm -f changesets-latest.osm.bz2.md5

sed -e "s/${cur_planet}.bz2/planet-latest.osm.bz2/" ${cur_year}/${cur_planet}.bz2.md5 > planet-latest.osm.bz2.md5
sed -e "s/${cur_changeset}.bz2/changesets-latest.osm.bz2/" ${cur_year}/${cur_changeset}.bz2.md5 > changesets-latest.osm.bz2.md5

rm /tmp/planetdump.lock