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#!/bin/bash

###
# ============LICENSE_START=======================================================
# org.onap.aai
# ================================================================================
# Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
###

#
# The script is called with a resource to be deleted.
# Uses aaiconfig.properties for authorization type and url. 
# It invokes a GET on the resource using curl and parses the resource-version.
# If found, prompts the user to continue and invokes DELETE using curl.
# responses in the range of 200 to 299 are considered successful
#

display_usage() {
        cat <<EOF
        Usage: $0 [options]

        1. Usage: deleteTool.sh <resource-path>
        2. This script needs only one argument and the argument should be resource-path.
        3. for example: resource-path for a particular customer is business/customers/customer/global-customer-id-1
        4. If resource is found, user will be prompted for confirmation to delete (y/n)
        5. Press any key other than "y" to cancel deletion of resource
EOF
}
if [ $# -eq 0 ]; then
        display_usage
        exit 1
fi

# remove leading slash when present
RESOURCE=`echo $1 | sed "s,^/,,"`
if [ -z $RESOURCE ]; then
        echo "resource parameter is missing"
        echo "usage: $0 resource"
        exit 1
fi
echo `date` "   Starting $0 for resource $RESOURCE"

XFROMAPPID="AAI-TOOLS"
XTRANSID=`uuidgen`
XTRANSID1=`uuidgen`

userid=$( id | cut -f2 -d"(" | cut -f1 -d")" )
if [ "${userid}" != "aaiadmin" ]; then
    echo "You must be aaiadmin to run $0. The id used $userid."
    exit 1
fi

. /etc/profile.d/aai.sh
PROJECT_HOME=/opt/app/aai-resources
prop_file=$PROJECT_HOME/resources/etc/appprops/aaiconfig.properties
log_dir=$PROJECT_HOME/logs/misc
today=$(date +\%Y-\%m-\%d)

MISSING_PROP=false
RESTURL=`grep ^aai.server.url= $prop_file |cut -d'=' -f2 |tr -d "\015"`
if [ -z $RESTURL ]; then
        echo "Property [aai.server.url] not found in file $prop_file"
        MISSING_PROP=true
fi
USEBASICAUTH=false
BASICENABLE=`grep ^aai.tools.enableBasicAuth $prop_file |cut -d'=' -f2 |tr -d "\015"`
if [ -z $BASICENABLE ]; then
        USEBASICAUTH=false
else
        USEBASICAUTH=true
        CURLUSER=`grep ^aai.tools.username $prop_file |cut -d'=' -f2 |tr -d "\015"`
        if [ -z $CURLUSER ]; then
                echo "Property [aai.tools.username] not found in file $prop_file"
                MISSING_PROP=true
        fi
        CURLPASSWORD=`grep ^aai.tools.password $prop_file |cut -d'=' -f2 |tr -d "\015"`
        if [ -z $CURLPASSWORD ]; then
                echo "Property [aai.tools.password] not found in file $prop_file"
                MISSING_PROP=true
        fi
fi

if [ $MISSING_PROP = false ]; then
        if [ $USEBASICAUTH = false ]; then
                AUTHSTRING="--cert $PROJECT_HOME/resources/etc/auth/aaiClientPublicCert.pem --key $PROJECT_HOME/resources/etc/auth/aaiClientPrivateKey.pem"
        else
                AUTHSTRING="-u $CURLUSER:$CURLPASSWORD"
        fi
        RESOURCEVERSION=`curl --request GET -sL -k $AUTHSTRING -H "X-FromAppId: $XFROMAPPID" -H "X-TransactionId: $XTRANSID1" -H "Accept: application/json" $RESTURL$RESOURCE|awk -F"\"resource-version\":\"" '{print $2}' | cut -d\" -f1`
        echo "resource-version is" $RESOURCEVERSION
        if [ -z $RESOURCEVERSION ]; then
        	echo "failed to get resource-version for $RESOURCE"
			echo `date` "   Done $0, returning -1"
			exit -1
        fi
        echo "Are you sure you would like to delete $RESOURCE? (y, n)"
       	read USERINPUT
        if [ "$USERINPUT" != "y" ]; then
			echo "user chose to exit before delete"
			echo `date` "   Done $0, returning -1"
			exit -1
        fi
			
        result=`curl --request DELETE -sL -w "%{http_code}" -o /dev/null -k $AUTHSTRING -H "X-FromAppId: $XFROMAPPID" -H "X-TransactionId: $XTRANSID" -H "Accept: application/json" $RESTURL$RESOURCE?resource-version=$RESOURCEVERSION`
        echo "result is $result."
        RC=0;
        if [ $? -eq 0 ]; then
                case $result in
                        +([0-9])?)
                                if [[ "$result" -ge 200 && $result -lt 300 ]]
                                then
                                        echo "DELETE result is OK,  $result"
                                else
                                        echo "failed DELETE request, response code was  $result"
                                        RC=$result
                                fi
                                ;;
                        *)
                                echo "DELETE request failed, response was $result"
                                RC=-1
                                ;;

                esac
        else
                echo "FAILED to send request to $RESTURL"
                RC=-1
        fi
else
        echo "usage: $0 resource"
        RC=-1
fi

echo
echo `date` "   Done $0, returning $RC"
exit $RC