#!/bin/sh -e
#
# 2011 Andi Brönnimann (andi-cdist at v-net.ch)
# 2012 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/>.
#
#
# Manage packages with pkg on OpenBSD
#

# Debug
# exec >&2
# set -x

os_version="$(cat "$__global/explorer/os_version")"
machine="$(cat "$__global/explorer/machine")"

if [ -f "$__object/parameter/version" ]; then
	version="$(cat "$__object/parameter/version")"
fi

if [ -f "$__object/parameter/flavor" ]; then
	flavor="$(cat "$__object/parameter/flavor")"
fi

# do not show progress bar
pkgopts="-x"

if [ -f "$__object/parameter/name" ]; then
   name=$(cat "$__object/parameter/name")
else
   name="$__object_id"
fi

if [ -n "$version" ] && [ -n "$flavor" ]; then
   pkgid="$name-$version-$flavor"
elif [ -n "$version" ]; then
   pkgid="$name-$version"
elif [ -n "$flavor" ]; then
   pkgid="$name--$flavor"
elif [ -f "$__object/parameter/flavor" ]; then
   pkgid="$name--"
else
   pkgid="$name"
fi

state_should="$(cat "$__object/parameter/state")"

pkg_version="$(cat "$__object/explorer/pkg_version")"

if [ -f "$__object/parameter/pkg_path" ]; then                                  
  pkg_path="$(cat "$__object/parameter/pkg_path")"                              
else
  has_installurl=$(cat "${__object}/explorer/has_installurl")
  if [ Xyes != X"${has_installurl}" ]; then
      # there is no default PKG_PATH, try to provide one
      pkg_path="ftp://ftp.openbsd.org/pub/OpenBSD/$os_version/packages/$machine/"
  fi
fi                                                                              

if [ "$pkg_version" ]; then
    state_is="present"
else
    state_is="absent"
fi

[ "$state_is" = "$state_should" ] && exit 0

case "$state_should" in
    present)
        # use this because pkg_add doesn't properly handle errors
        cat << eof
if [ X != X"${pkg_path}" ]; then
    PKG_PATH="${pkg_path}"; export PKG_PATH
fi
status=\$(pkg_add "$pkgopts" "$pkgid" 2>&1)
pkg_info | grep "^${name}.*${version}.*${flavor}" > /dev/null 2>&1

# We didn't find the package in the list of 'installed packages', so it failed
# This is necessary because pkg_add doesn't return properly
if [ \$? -ne 0 ]; then
    if [ -z "\${status}" ]; then
      status="Failed to add package, uncaught exception."
    fi
    echo "Error: \$status" >&2
    exit 1
fi
eof
    ;;

    absent)
        # use this because pkg_add doesn't properly handle errors
        cat << eof
status=\$(pkg_delete "$pkgopts" "$pkgid")
pkg_info | grep "^${name}.*${version}.*${flavor}" > /dev/null 2>&1

# We found the package in the list of 'installed packages'
# This would indicate that pkg_delete failed, send the output of pkg_delete
if [ \$? -eq 0 ]; then
    if [ -z "\${status}" ]; then
      status="Failed to remove package, uncaught exception."
    fi
    echo "Error: \$status" >&2
    exit 1
fi
eof
   ;;
   *)
		echo "Unknown state: $state_should" >&2
		exit 1
   ;;
esac