#!/usr/bin/env bash
#
# lib/exec/install-script
#
# Copyright (c) 2020-     RAP <contacto@partidopirata.com.ar>
# Copyright (c) 2011-2016 LibreVPN <vpn@hackcoop.com.ar>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation; either version 3 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 Affero General
# Public License along with this program.  If not, see
# <http://www.gnu.org/licenses/>.
#
#
# Instala un script
# $0 script
# $1 nodo
# $2 evento
# $3 script

. "${RAP_LIBDIR}"/common

# Mostrar los eventos disponibles
list_events() {
  for _e in tinc host subnet; do
    msg "${_e}"
  done
}

# Mostrar los scripts disponibles
list_scripts() {
  ls ${RAP_SKELDIR}/scripts
}

VERBOSE=""
while getopts "dvhes" arg; do
  case $arg in
    h) help ${self} ; exit 0;;
    v) VERBOSE=" -v " ;;
    e) list_events ; exit 0 ;;
    s) list_scripts ; exit 0 ;;
  esac
done
let OPTIND--; shift ${OPTIND}

# Mostrar la ayuda si no hay argumentos
test -z "$1" && help ${self} && exit 0

node="$(get_node_name "${1}")" ; shift
node_dir="$(get_node_dir "$node")"
event="$(get_event "$1")" ; shift
script="$(get_script "$1")"

test -z "${script}" && fatal_error "El script %s no existe" "${script##*/}"
test -z "${node}"   && fatal_error "El nodo %s no existe" "${node}"
test -z "${event}"  && fatal_error "El evento %s no es válido" "${event}"

# Instalar run-script para este evento
for _state in up down; do
# No pisar los tinc-{up,down} con run-script
  if test "${event}" != "tinc" ; then
# Y vincularla al evento-estado, de esta forma tenemos una sola copia
# siempre actualizada.
    ln --force --symbolic run-script "${node_dir}/${event}-${_state}"
  fi
done

# Instalar el script para el evento
ln --symbolic "${script}" "${node_dir}/scripts/${event}-${script##*/}"