#!/bin/sh
###
# USAGE
# ./pump_sqs.sh {profile} {source-sqs-url} {target-sqs-url} [{iterations}]
#
# Example:
# ./pump_sqs.sh milon https://sqs.eu-central-1.amazonaws.com/405710347540/milon_redrive https://sqs.eu-central-1.amazonaws.com/405710347540/milon 10
###


AWSPROFILE=$1
SQSSOURCEURL=$2
SQSTARGETURL=$3

COUNT=${4:-1}
i=0
while [ $i -lt $COUNT ]
do
    echo "\nIteration: $i"

	MSG=$( aws --profile $AWSPROFILE sqs receive-message --queue-url $SQSSOURCEURL )
	BODY=$(echo $MSG | jq -M -c -r '.Messages[0].Body' )
	RHD=$(echo $MSG | jq -M -c -r '.Messages[0].ReceiptHandle' )
	MID=$(echo $MSG | jq -M -c -r '.Messages[0].MessageId' )

	if [ "$MID" = "null" ]
	then
		echo "error read message"
		echo $MSG
		exit 1
	else
		echo "got message: $MID"
	fi


	CHECKBODY=${#BODY}
	echo "body length $CHECKBODY"
	if [ $CHECKBODY -le 5 ]
	then
		echo "error - empty body.\nProbably empty queue, so wait for 5sec!"
		sleep 5
	else

		WRITE=$(aws sqs --profile=$AWSPROFILE send-message --queue-url $SQSTARGETURL --message-body $BODY )
		WMID=$(echo $WRITE| jq '.MessageId')
		echo "written msg to target: $WMID"
		if [ "$WMID" = "null" ]
		then
			echo "error on write"
		else
			$(aws sqs --profile=$AWSPROFILE delete-message --queue-url $SQSSOURCEURL --receipt-handle $RHD ) | jq '.MessageId'
			echo "delete message $MID"
		fi
	fi
	
	true $(( i++ ))
done