#!/usr/bin/env bash
#--------------------------------------------------------------------------------#
# This file is part of the PALM model system.
#
# PALM 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 3 of the License, or (at your option) any later version.
#
# PALM 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
# PALM. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright 1997-2021  Leibniz Universitaet Hannover
#--------------------------------------------------------------------------------#
# project install script
#--------------------------------------------------------------------------------#
SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
   DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
   SOURCE="$(readlink "$SOURCE")"
   [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
SCRIPT_LOCATION="$( cd -P "$( dirname "$SOURCE" )" && pwd )"

project_root_dir=$(readlink -f "${SCRIPT_LOCATION}/")
project_bin_dir=$(readlink -f "${project_root_dir}/bin/")
project_build_dir=$(readlink -f "${project_root_dir}/build/")
project_share_dir=$(readlink -f "${project_root_dir}/share/")
project_src_dir=$(readlink -f "${project_root_dir}/src/")
project_kpp_dir=$(readlink -f "${project_root_dir}/kpp/")

install_prefix="${project_build_dir}"

program_name="kpp4palm"

install_function() {
   printf "### %s\n" "Installing ${program_name} ..."
   if [ "${do_clean}" == "true" ]; then
      rm -r ${project_build_dir}
      rm -r ${project_bin_dir}
      PROG=${program_name}.exe make -C ${project_src_dir} clean
      make -C ${project_kpp_dir} distclean
   fi
   # build kpp
   mkdir -p ${project_kpp_dir}/bin
   make -C ${project_kpp_dir}
   if [ ${?} -ne 0 ]; then
      echo "ERROR: Compilation of kpp failed."
      exit 1
   fi
   # build kpp4palm
   mkdir -p ${project_bin_dir}
   PROG=${program_name}.exe make -C ${project_src_dir}
   if [ ${?} -ne 0 ]; then
      echo "ERROR: Compilation of ${program_name} failed."
      exit 1
   fi
   cp -pf ${project_src_dir}/${program_name}.exe ${project_bin_dir}/.
   mkdir -p ${install_prefix}
   cd ${install_prefix}
   install_bin_dir=${install_prefix}/bin
   mkdir -p ${install_bin_dir}
   chmod a+x $(realpath "${project_root_dir}/scripts/kpp4palm.sh")
   ln -s -f $(realpath --relative-to="${install_bin_dir}" "${project_root_dir}/scripts/kpp4palm.sh") ${install_bin_dir}/${program_name}
   if ! test ${install_bin_dir}/${program_name}; then
      echo "ERROR: Installation of ${program_name} failed."
      exit 1
   fi
   printf "### %s\n" "Installing ${program_name} finished."
}

show_usage() {
   echo "Usage: $0 [-h] [-p <install_prefix>] [-x]"
}

show_help() {
   show_usage
   echo "      -h                     show this help message"
   echo "      -p <install_prefix>    set installation directory"
   echo "      -x                     clean already existing build files"
}

while getopts ":p:hx" o; do
   case "${o}" in
      p)
         install_prefix="$(readlink -m "${OPTARG}")"
         ;;
      x)
         do_clean="true"
         ;;
      h)
         show_help
         exit 0
         ;;
      *)
         show_usage
         exit 1
         ;;
   esac
done
# strip all parsed options from the options list
shift $((OPTIND-1))

install_function