#!/bin/bash
isExistApp = `pgrep httpd`
if [[ -n  $isExistApp ]]; then
    /bin/systemctl stop httpd.service       
fi

region=$(curl -s http://169.254.169.254/latest/meta-data/placement/region)
CURRENT_DEPLOYMENT=$(aws ssm get-parameter --name "deployment" --region $region --query Parameter.Value --output text)
DEPLOYMENT_TYPE=$(aws deploy get-deployment --deployment-id "$DEPLOYMENT_ID" --region $region --query deploymentInfo.deploymentStyle.deploymentType --output text)

function deploy_to_green {
echo `date -u` ":deploying to green" >> /tmp/deploylog.txt
## here you can mention any commands you need to run for your application during the deployment
}

function deploy_to_blue {
echo `date -u` ":deploying to BLUE" >> /tmp/deploylog.txt
## here you can mention any commands you need to run for your application during the deployment
}

if [ "$DEPLOYMENT_TYPE" == "IN_PLACE" ]; then
 echo `date -u` ":nothing to deploy as this is an ASG launch activity, EFS already uptodate" >> /tmp/deploylog.txt
else
 if [ "$CURRENT_DEPLOYMENT" == "green" ];then
	 deploy_to_blue
 elif [ "$CURRENT_DEPLOYMENT" == "blue" ] || [ "$CURRENT_DEPLOYMENT" == "null" ];then
	 deploy_to_green
 else
  echo `date -u` ":nothing to deploy" >> /tmp/deploylog.txt
 fi	
fi

/bin/systemctl restart httpd.service