#! /bin/sh -e
# 
# Copyright 2011 Emmet Hikory <persia@ubuntu.com>
#
# With thanks to Thom May and Otavio Salvador for a well-documented API
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
# 
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

usage () {
    echo "Usage: $0 [-h|--help|-v|--verbose]"
    echo ""
    echo "  -h | --help      print this help"
    echo "  -v | --verbose   be verbose (messages go to STDERR)"
    echo "  -V | --version   print version information"
    echo
    echo "Possible return values:"
    echo "0 most likely running on a laptop"
    echo "1 most likely NOT running on a laptop"
    echo "2 called with unknown option, -j, --help, -V, or --version"
}

VERBOSE=""
if [ "$1" != "" ]; then
    case "$1" in
        "-h" | "--help")
            usage
            exit 2
            ;;
        "-V" | "--version")
            echo "Version: @VERSION@"
            exit 2
            ;;
        "-v" | "--verbose")
            VERBOSE="Limited Explanations"
            ;;
    esac
fi

if [ -x /usr/sbin/devicetype-detect ]; then
    case "$(/usr/sbin/devicetype-detect)" in
        "desktop")
            [ -z "$VERBOSE" ] || echo "We're not on a laptop (no relevant hint found)" >&2
            exit 1
        *)
            [ -z "$VERBOSE" ] || echo "We're a laptop (relevant hint found)" >&2
            exit 0
else
    echo "This wrapper requires devicetype-detect installed" >2
    exit 2
fi