#!/bin/bash
#
#    Licensed to the Apache Software Foundation (ASF) under one or more
#    contributor license agreements.  See the NOTICE file distributed with
#    this work for additional information regarding copyright ownership.
#    The ASF licenses this file to You 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.
#

DIRNAME=`dirname "$0"`
PROGNAME=`basename "$0"`
CATEGORY=`basename "$1"`
ACTION=`basename "$2"`

locateHome() {
    if [ "x$KARAF_HOME" != "x" ]; then
        warn "Ignoring predefined value for KARAF_HOME"
    fi

    # In POSIX shells, CDPATH may cause cd to write to stdout
    (unset CDPATH) >/dev/null 2>&1 && unset CDPATH

    KARAF_HOME=`cd $DIRNAME/..; pwd`
    if [ ! -d "$KARAF_HOME" ]; then
        die "KARAF_HOME is not valid: $KARAF_HOME"
    fi
}

validateArguments() {
    if [ "x$CATEGORY" == "x" ]; then
        echo "Usage:jclouds {category} {action} {options/arguments}."
        echo ""
        echo "Categories: node, group, image, location hardware"
        echo "Actions: list, create, destroy, runscript"
        echo ""
        echo "Options:"
        echo -e "--proivder:\t\t The id of the provider."
        echo -e "--api:\t\t\t The id of the api."
        echo -e "--endpoint:\t\t The endpoint."
        echo -e "--identity:\t\t The identity."
        echo -e "--credential:\t\t The credential."
        exit -1
    fi
    if [ "x$ACTION" == "x" ]; then
        echo "Usage:jclouds {category} {action} {options/arguments}."
        echo ""
        echo "Categories: node, group, image, location hardware"
        echo "Actions: list, create, destroy, runscript"
        echo ""
        echo "Options:"
        echo -e "--proivder:\t\t The id of the provider."
        echo -e "--api:\t\t\t The id of the api."
        echo -e "--endpoint:\t\t The endpoint."
        echo -e "--identity:\t\t The identity."
        echo -e "--credential:\t\t The credential."
        exit -1
        fi
}
warn() {
    echo "${PROGNAME}: $*"
}

die() {
    warn "$*"
    exit 1
}

run() {
    CMD="$KARAF_HOME/bin/shell jclouds:$CATEGORY-$ACTION ${@:3}"
    exec $CMD
}

main() {
    validateArguments
    locateHome
    run "$@"
}

main "$@"