#!/bin/sh

#
# This script creates config/app_config.yml and config/database.yml
# from the corresponding .sample files as input and performing
# settings substitutions.
#
# It relies on a known format of the .yml.sample files which haven't
# been made easier to parse to still let humans copy them manually and
# do further editing or leave them as such to get the same setup as before
# the introduction of this script.
#
# The script is a work in progress. Available switches are printed
# by invoking with the --help switch. More switches will be added
# as the need/request for them arises.
#
# --strk(2014-10-07)
#

STATUS="$0 $*"

APPCONFIG=`dirname $0`/config/app_config.yml
DBCONFIG=`dirname $0`/config/database.yml

if [ -z "$PGPORT" ]; then
  PGPORT=`grep -w "port:" ${DBCONFIG}.sample | head -1 | cut -d: -f2 | sed 's/^\s*//;s/\s*$//'`
fi

if [ -z "$PGUSER" ]; then
  PGUSER=`grep -w "username:" ${DBCONFIG}.sample | head -1 | cut -d: -f2 | sed 's/^\s*//;s/\s*$//'`
fi

if [ -z "$SQLAPI_PORT" ]; then
  SQLAPI_PORT=`cat ${APPCONFIG}.sample | grep -A10 sql_api: | grep port: | head -1 | cut -d: -f2 | sed 's/^\s*//;s/\s*$//'`
fi

if [ -z "$MAPAPI_PORT" ]; then
  MAPAPI_PORT=`cat ${APPCONFIG}.sample | grep -A10 tiler: | grep port: | head -1 | cut -d: -f2 | sed 's/^\s*["'\'']\?//;s/["'\'']\?\s*$//'`
fi

#PGPORT=`node -e "console.log(require('${ENVEX}').postgres.port)"`

usage() {
  echo "Usage: $0 [OPTION]"
  echo 
  echo "Configuration:"
  echo "  --help                        display this help and exit"
  echo "  --with-pgport=NUM             access PostgreSQL server on TCP port NUM [$PGPORT]"
  echo "  --with-pguser=STRING          access PostgreSQL as user STRING [$PGUSER]"
  echo "  --with-mapapi-port=NUM        access MAP-API server on TCP port NUM [$MAPAPI_PORT]"
  echo "  --with-sqlapi-port=NUM        access SQL-API server on TCP port NUM [$SQLAPI_PORT]"
}

while test -n "$1"; do
  case "$1" in
    --help|-h)
      usage
      exit 0
      ;;
    --with-pgport=*)
      PGPORT=`echo "$1" | cut -d= -f2`
      ;;
    --with-pguser=*)
      PGUSER=`echo "$1" | cut -d= -f2`
      ;;
    --with-sqlapi-port=*)
      SQLAPI_PORT=`echo "$1" | cut -d= -f2`
      ;;
    --with-mapapi-port=*)
      MAPAPI_PORT=`echo "$1" | cut -d= -f2`
      ;;
    *)
      echo "Unused option '$1'" >&2
      #usage >&2
      #exit 1
  esac
  shift
done

echo "PGPORT: $PGPORT"
echo "PGUSER: $PGUSER"
echo "SQLAPI_PORT: $SQLAPI_PORT"
echo "MAPAPI_PORT: $MAPAPI_PORT"


echo "Writing ${APPCONFIG}"
# Relies on known values in the .sample file
cat ${APPCONFIG}.sample | sed "s/8080/${SQLAPI_PORT}/;s/8181/${MAPAPI_PORT}/" > "${APPCONFIG}"

echo "Writing ${DBCONFIG}"
# Relies on known values in the .sample file
cat ${DBCONFIG}.sample | sed "s/port: .*/port: ${PGPORT}/;s/username: .*/username: ${PGUSER}/" > "${DBCONFIG}"

STATUSFILE=config.status
echo "Writing ${STATUSFILE}"
echo ${STATUS} > ${STATUSFILE} && chmod +x ${STATUSFILE}