#!/bin/bash
# Copyright Security Onion Solutions LLC and/or licensed to Security Onion Solutions LLC under one
# or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at
# https://securityonion.net/license; you may not use this file except in compliance with the
# Elastic License 2.0.

{% from 'vars/globals.map.jinja' import GLOBALS %}
{% if GLOBALS.role in ['so-manager', 'so-standalone', 'so-managersearch', 'so-managerhype'] %}

. /usr/sbin/so-common

force=false
while [[ $# -gt 0 ]]; do
  case $1 in
    -f|--force)
      force=true
      shift
      ;;
    *)
      echo "Unknown option $1"
      echo "Usage: $0 [-f|--force]"
      exit 1
      ;;
  esac
done

# Check to make sure that Kibana API is up & ready
RETURN_CODE=0
wait_for_web_response "http://localhost:5601/api/fleet/settings" "fleet" 300 "curl -K /opt/so/conf/elasticsearch/curl.config"
RETURN_CODE=$?

if [[ "$RETURN_CODE" != "0" ]]; then
  echo -e "\nKibana API not accessible, can't setup Elastic Fleet output policy for Kafka...\n"
  exit 1
fi

KAFKACRT=$(openssl x509 -in /etc/pki/elasticfleet-kafka.crt)
KAFKAKEY=$(openssl rsa -in  /etc/pki/elasticfleet-kafka.key)
KAFKACA=$(openssl x509 -in  /etc/pki/tls/certs/intca.crt)
KAFKA_OUTPUT_VERSION="2.6.0"

if ! kafka_output=$(curl -sK /opt/so/conf/elasticsearch/curl.config -L "http://localhost:5601/api/fleet/outputs/so-manager_kafka" --fail 2>/dev/null); then
  # Create a new output policy for Kafka. Default is disabled 'is_default: false & is_default_monitoring: false'
  JSON_STRING=$( jq -n \
    --arg KAFKACRT "$KAFKACRT" \
    --arg KAFKAKEY "$KAFKAKEY" \
    --arg KAFKACA "$KAFKACA" \
    --arg MANAGER_IP "{{ GLOBALS.manager_ip }}:9092" \
    --arg KAFKA_OUTPUT_VERSION "$KAFKA_OUTPUT_VERSION" \
      '{"name":"grid-kafka", "id":"so-manager_kafka","type":"kafka","hosts":[ $MANAGER_IP ],"is_default":false,"is_default_monitoring":false,"config_yaml":"","ssl":{"certificate_authorities":[ $KAFKACA ],"certificate": $KAFKACRT ,"key":"","verification_mode":"full"},"proxy_id":null,"client_id":"Elastic","version": $KAFKA_OUTPUT_VERSION ,"compression":"none","auth_type":"ssl","partition":"round_robin","round_robin":{"group_events":10},"topic":"default-securityonion","headers":[{"key":"","value":""}],"timeout":30,"broker_timeout":30,"required_acks":1,"secrets":{"ssl":{"key": $KAFKAKEY }}}'
    )
    if ! response=$(curl -sK /opt/so/conf/elasticsearch/curl.config -L -X POST "localhost:5601/api/fleet/outputs" -H 'kbn-xsrf: true' -H 'Content-Type: application/json' -d "$JSON_STRING" --fail 2>/dev/null); then
      echo -e "\nFailed to setup Elastic Fleet output policy for Kafka...\n"
      exit 1
    else
      echo -e "\nSuccessfully setup Elastic Fleet output policy for Kafka...\n"
      exit 0
    fi
elif kafka_output=$(curl -sK /opt/so/conf/elasticsearch/curl.config -L "http://localhost:5601/api/fleet/outputs/so-manager_kafka" --fail 2>/dev/null) && [[ "$force" == "true" ]]; then
  # force an update to Kafka policy. Keep the current value of Kafka output policy (enabled/disabled).
  ENABLED_DISABLED=$(echo "$kafka_output" | jq -e .item.is_default)
  HOSTS=$(echo "$kafka_output" | jq -r '.item.hosts')
  JSON_STRING=$( jq -n \
    --arg KAFKACRT "$KAFKACRT" \
    --arg KAFKAKEY "$KAFKAKEY" \
    --arg KAFKACA "$KAFKACA" \
    --arg ENABLED_DISABLED "$ENABLED_DISABLED"\
    --arg KAFKA_OUTPUT_VERSION "$KAFKA_OUTPUT_VERSION" \
    --argjson HOSTS "$HOSTS" \
      '{"name":"grid-kafka","type":"kafka","hosts":$HOSTS,"is_default":$ENABLED_DISABLED,"is_default_monitoring":$ENABLED_DISABLED,"config_yaml":"","ssl":{"certificate_authorities":[ $KAFKACA ],"certificate": $KAFKACRT ,"key":"","verification_mode":"full"},"proxy_id":null,"client_id":"Elastic","version": $KAFKA_OUTPUT_VERSION ,"compression":"none","auth_type":"ssl","partition":"round_robin","round_robin":{"group_events":10},"topic":"default-securityonion","headers":[{"key":"","value":""}],"timeout":30,"broker_timeout":30,"required_acks":1,"secrets":{"ssl":{"key": $KAFKAKEY }}}'
    )
  if ! response=$(curl -sK /opt/so/conf/elasticsearch/curl.config -L -X PUT "localhost:5601/api/fleet/outputs/so-manager_kafka" -H 'kbn-xsrf: true' -H 'Content-Type: application/json' -d "$JSON_STRING" --fail 2>/dev/null); then
    echo -e "\nFailed to force update to Elastic Fleet output policy for Kafka...\n"
    exit 1
  else
    echo -e "\nForced update to Elastic Fleet output policy for Kafka...\n"
  fi

else
  echo -e "\nElastic Fleet output policy for Kafka already exists...\n"
fi
{% else %}
echo -e "\nNo update required...\n"
{% endif %}