#!/bin/sh
CHANGEFILE=/home/osm/import/$1/changes.osc.gz
TILEARCHIVE=/home/osm/temp/$1.zip

echo Fetching updates
osmosis --rri workingDirectory=/home/osm/import/$1 --simplify-change --write-xml-change $CHANGEFILE

if [ -e "$CHANGEFILE" ]; then

  echo Applying updates to database
  osm2pgsql --append --slim --style /home/osm/openstreetmap-carto/openstreetmap-carto.style -d gis -e0-16 -o /home/osm/import/$1/expire.list -C 2000 /home/osm/import/$1/changes.osc.gz

  echo Rendering outdated tiles
  /home/osm/bin/renderpoly.py -l /home/osm/import/$1/expire.list --style /home/osm/openstreetmap-carto/osm.xml -z 0 16 --force

  if [ -e "$TILEARCHIVE" ]; then
    echo Render updated tiles
    awk '{print $0".png"}' /home/osm/import/$1/expire.list | zip -u $TILEARCHIVE
  fi

  echo Deleting obsolete files
  rm $CHANGEFILE
  rm /home/osm/import/$1/expire.list
fi