#!/bin/sh
#
# 2010-2011 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist 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.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
# Print configuration directories - helper for all other scripts
#

# Fail if something bogus is going on
set -u

# Values can be overriden from outside, so you can
# customise paths as you like (for distributors, geeks and hackers)

# Names
: ${__cdist_name_bin:=bin}
: ${__cdist_name_cache:=cache}
: ${__cdist_name_code:=code}
: ${__cdist_name_explorer:=explorers}
: ${__cdist_name_gencode:=gencode}
: ${__cdist_name_host:=hosts}
: ${__cdist_name_init:=init}

# Name of the manifest file in types
: ${__cdist_name_manifest:=manifest}

# Name of the base directory containing the initial manifests
: ${__cdist_name_manifests:=manifests}
: ${__cdist_name_object:=objects}

: ${__cdist_name_type:=types}
: ${__cdist_name_type_params:=parameters}
: ${__cdist_name_type_params_required:=required}
: ${__cdist_name_type_params_optional:=optional}

# Name of the executable generated
: ${__cdist_name_exec:=exec}

# File that contains source of a specific object creation
: ${__cdist_name_object_source:=.source}

# Marks an object finished
: ${__cdist_name_object_finished:=.done}

# Base
: ${__cdist_config:=/etc/cdist}
: ${__cdist_explorer_dir:=$__cdist_config/$__cdist_name_explorer}
: ${__cdist_manifest_dir:=$__cdist_config/$__cdist_name_manifests}
: ${__cdist_manifest_init:=$__cdist_manifest_dir/$__cdist_name_init}
: ${__cdist_type_dir:=$__cdist_config/$__cdist_name_type}

# Cache
: ${__cdist_cache_dir:=$__cdist_config/cache}
: ${__cdist_cache_hosts:=$__cdist_cache_dir/$__cdist_name_host}
: ${__cdist_cache_bin:=$__cdist_cache_dir/$__cdist_name_bin}


# Remote
: ${__cdist_remote_base_dir:=/var/lib/cdist}
export __cdist_remote_base_dir
: ${__cdist_remote_explorer_dir:=$__cdist_remote_base_dir/$__cdist_name_explorer}
export __cdist_remote_explorer_dir
: ${__cdist_remote_cache_dir:=$__cdist_remote_base_dir/$__cdist_name_cache}
export __cdist_remote_cache_dir
: ${__cdist_remote_cache_explorer:=$__cdist_remote_cache_dir/$__cdist_name_explorer}
export __cdist_remote_cache_explorer
: ${__cdist_remote_cache_bin:=$__cdist_remote_base_dir/$__cdist_name_bin}
export __cdist_remote_cache_bin
: ${__cdist_remote_cache_exec:=$__cdist_remote_base_dir/$__cdist_name_exec}
export __cdist_remote_cache_exec

# Tempfiles need to be recreated for each individual script, unshared!
__cdist_tmp_dir=$(mktemp -d "/tmp/cdist.XXXXXXXXXXXX")
export __cdist_tmp_dir
__cdist_tmp_file=$(mktemp "$__cdist_tmp_dir/cdist.XXXXXXXXXXXX")
export __cdist_tmp_file

################################################################################
# cconf standard vars prefixed with cdist
__cdist_pwd="$(pwd -P)"
__cdist_mydir="${0%/*}";
__cdist_abs_mydir="$(cd "$__cdist_mydir" && pwd -P)"
__cdist_myname=${0##*/};
__cdist_abs_myname="$__cdist_abs_mydir/$__cdist_myname"


################################################################################
# Other constants

# Used for IDs
__cdist_sane_regexp='[A-Za-z0-9]*[-A-Za-z0-9_]*'
################################################################################
# Function list
#
__cdist_debug_echo()
{
   if [ "$__cdist_debug" ]; then
      echo "Debug: $@"
   fi
}

__cdist_exit_err()
{
   echo "$@" >&2
   exit 1
}

__cdist_usage()
{
   __cdist_exit_err "$__cdist_myname: $@"
}

__cdist_cache_host()
{
   echo "${__cdist_cache_hosts}/${__cdist_target_host}"
}

__cdist_type_mydir()
{
   echo "${__cdist_type_dir}/${__cdist_type_current}"
}

__cdist_type_gencode()
{
   local type="$1"

   echo "${__cdist_type_dir}/${type}/$__cdist_name_gencode"
}

__cdist_type_param_file()
{
   local type="$1"; shift
   local paramtype="$1"; shift

   echo "${__cdist_type_dir}/$type/$__cdist_name_type_params/$paramtype"
}

__cdist_object_arg()
{
   local arg="$1"; shift
   local object="$1"; shift

   cat "${__cdist_object_base_dir}/${object}/${arg}"
}

__cdist_object_list()
{
   local basedir="$1"; shift

   # Use subshell to prevent changing cwd in program
   (
      cd "${basedir}"

      find . -name "$__cdist_name_object_source" |    \
         sed -e "s;$__cdist_name_object_source\$;;" -e 's;^./;;'
   )

}

__cdist_object_source()
{
   local object_dir="$1"; shift

   cat "${object_dir}/$__cdist_name_object_source"
}

__cdist_exec_fail_on_error()
{
   sh -e "$@"
   [ "$?" -eq 0 ] || __cdist_exit_err "Error: $1 exited non-zero."
}


__cdist_tmp_removal()
{
   rm -rf "${__cdist_tmp_dir}"
}

################################################################################
# Trap for tmp removal
#
trap __cdist_tmp_removal EXIT