#!/bin/bash
# drin - helper tools to initialize Drupal projects
#
# Copyright (C) 2017  Antonio Ospite <ao2@ao2.it>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

PROGNAME=$(basename "$0")
LIBEXEC="@libexec@"

usage() {
  cat <<EOF
usage: $PROGNAME [--help] [sub-command]

Helper tools to initialize Drupal projects.

Options:
  -h, --help          display this usage message and exit

Sub-commands:
EOF

  for subcommand in ${LIBEXEC}/*.sh;
  do
    echo "  $(basename "$subcommand" .sh)"
  done
}

[ $# -eq 0 ] && { usage 1>&2 && exit 1; }

while [ $# -gt 0 ];
do
  case "$1" in
    -h|--help)
      usage
      exit 0
      ;;
    -*)
      echo "Error: Unknown option '${1}'" 1>&2
      ;;
    *)
      subcommand="${LIBEXEC}/${1}.sh"
      if [ ! -x "$subcommand" ]; then
        echo "Error: '${1}' is not a known subcommand." 1>&2
        echo "Run '${PROGNAME} --help' for a list of known subcommands." 1>&2
        exit 1
      else
        shift
        exec "$subcommand" "$@"
      fi
      ;;
  esac
  shift
done