#!/bin/bash

# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail

# install-packages package [package ...]

ACTION=install
MAP_ELEMENT=""

SCRIPTNAME=$(basename $0)
function show_options () {
    echo "Usage: $SCRIPTNAME [package ...]"
    echo
    echo "Options:"
    echo "    -u          -- update all packages"
    echo "    -e          -- erase/remove packages"
    echo "    -m          -- use custom element package map (Example: -m nova)"
    exit 0
}

install_deb_packages () {
    DEBIAN_FRONTEND=noninteractive \
        http_proxy=${http_proxy:-} https_proxy=${https_proxy:-} \
        no_proxy=${no_proxy:-} \
        apt-get --option "Dpkg::Options::=--force-confold" \
        --option "Dpkg::Options::=--force-confdef" --assume-yes "$@"
}

TEMP=$(getopt -o hudem: -n $SCRIPTNAME -- "$@")
if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
eval set -- "$TEMP"

while true ; do
    case "$1" in
        -u) install_deb_packages dist-upgrade; exit 0;;
        -e) ACTION="remove"; shift;;
        -m) MAP_ELEMENT=$2; shift 2;;
        -h) show_options;;
        --) shift; break ;;
        *) echo "Error: unsupported option $1."; exit 1;;
    esac
done

PKGS=$@
if [ -n "$MAP_ELEMENT" ]; then
    if ! PKGS=$(pkg-map --element $MAP_ELEMENT $@); then
        echo "bin/pkg-map error. $PKGS"
        exit 1
    fi
fi

if [ -z "${PKGS}" ]; then
    echo "Not running install-packages $ACTION with empty packages list"
else
    install_deb_packages $ACTION $PKGS
fi