#!/bin/bash

#
# Create a function and trigger it using NATS
# 

set -euo pipefail
source $(dirname $0)/../../../utils.sh
set +x

TEST_ID=$(generate_test_id)
echo "TEST_ID = $TEST_ID"

ROOT=$(dirname $0)/../../..
DIR=$(dirname $0)

clusterID="fissionMQTrigger"
pubClientID="clientPub-$TEST_ID"
subClientID="clientSub-$TEST_ID"
topic="foo.bar$TEST_ID"
resptopic="foo.foo$TEST_ID"
expectedRespOutput="[foo.foo$TEST_ID]: 'Hello, World!'"

env=nodejs-$TEST_ID
fn=hello-$TEST_ID
mqt=mqt-$TEST_ID

cleanup() {
    log "Cleaning up..."
    clean_resource_by_id $TEST_ID
}

if [ -z "${TEST_NOCLEANUP:-}" ]; then
    trap cleanup EXIT
else
    log "TEST_NOCLEANUP is set; not cleaning up test artifacts afterwards."
fi

log "Creating nodejs env"
fission env create --name $env --image $NODE_RUNTIME_IMAGE

log "Creating function"
fission fn create --name $fn --env $env --code $DIR/main.js --method GET

log "Creating message queue trigger"
fission mqtrigger create --name $mqt --function $fn --mqtype "nats-streaming" --topic $topic --resptopic $resptopic

# wait until nats trigger is created
sleep 5

#
# Send a message
#
log "Sending message"
go run $DIR/stan-pub.go -s $FISSION_NATS_STREAMING_URL -c $clusterID -id $pubClientID $topic ""

#
# Wait for message on response topic 
#
log "Waiting for response"
response=$(timeout 120s go run $DIR/stan-sub.go --last -s $FISSION_NATS_STREAMING_URL -c $clusterID -id $subClientID $resptopic 2>&1)

if [[ "$response" != "$expectedRespOutput" ]]; then
    log "'$response' is not equal to '$expectedRespOutput'"
    exit 1
fi

log "Deleting  message queue trigger"
fission mqtrigger delete --name $mqt

log "Subscriber received expected response: $response"
log "Test PASSED"