#!/bin/bash

timedatectl set-timezone Europe/Madrid

start_time=`date`
  
echo "provisioning started: ${start_time}" 

#### The user must fill these variables - START

# Fully Qualified Name: ex. "es-server.localenv.com"
MACHINE_HOSTNAME=

# ElasticSearch version to be installed: ex. 8.1.0"
ELASTICSEARCH_VERSION=
#### The user must fill these variables - END

ELASTICSEARCH_USER=usrv

INSTALLER_ARCHIVE_NAME=elasticsearch-${ELASTICSEARCH_VERSION}.deb

NETWORK_INTERFACE=eth0

hostnamectl set-hostname ${MACHINE_HOSTNAME}

# Print some information about the container OS
hostnamectl

# Print some information about the container timezone
timedatectl

#####################################################################
## Get the IP address into an environment variable. This command outputs 
## an empty variable if the network interface name is not ${NETWORK_INTERFACE}
#####################################################################
ip_address=`ip -4 addr show ${NETWORK_INTERFACE} | grep -oP '(?<=inet\s)\d+(\.\d+){3}'`

adduser --disabled-password --gecos GECOS ${ELASTICSEARCH_USER}
 
usermod -p "`openssl passwd -1  -salt 5RPVAd ${ELASTICSEARCH_USER}`" ${ELASTICSEARCH_USER}
 
adduser ${ELASTICSEARCH_USER} sudo

dpkg --install /vagrant/artifacts/elasticsearch-${ELASTICSEARCH_VERSION}-amd64.deb

cp /vagrant/artifacts/memory.options /etc/elasticsearch/jvm.options.d/memory.options

cp /vagrant/artifacts/elasticsearch.yml /etc/elasticsearch/elasticsearch.yml

source_str="#MACHINE_HOSTNAME#"
 
target_str="${MACHINE_HOSTNAME}"
 
sed -i "s/$source_str/$target_str/g" /etc/elasticsearch/elasticsearch.yml

/usr/share/elasticsearch/bin/elasticsearch-plugin install --batch ingest-attachment

systemctl daemon-reload

systemctl enable elasticsearch.service

systemctl start elasticsearch.service

systemctl status elasticsearch.service

apt install -y curl

curl -X GET "localhost:9200/?pretty"

end_time=`date`

echo "This container has IP (interface: ${NETWORK_INTERFACE}): ${ip_address}"

echo "If you add this IP to the hostname (${MACHINE_HOSTNAME}) in your hosts file:"

echo "	You can connect with user ${ELASTICSEARCH_USER} via ssh (password ${ELASTICSEARCH_USER}): ssh ${ELASTICSEARCH_USER}@${MACHINE_HOSTNAME}"

echo "	Your Elastic Search Server instance is is listening on port 9200: you can validate connectivity with 'curl -X GET "${MACHINE_HOSTNAME}:9200/?pretty"'"

echo "provisioning started: ${start_time}" 
 
echo "provisioning ended: ${end_time}"