#!/bin/bash
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)

yum install -y httpd
rm -rf /var/www/html
mount -a

function configure_httpd {
service httpd start
chkconfig httpd on
}
	
if [ "$DEPLOYMENT_TYPE" == "IN_PLACE" ]; then
 if [ "$CURRENT_DEPLOYMENT" == "green" ]; then
   echo `date -u` ":creating symlink for GREEN deployment" >> /tmp/deploylog.txt
   ln -s /efs/green /var/www/html
   configure_httpd
 elif [ "$CURRENT_DEPLOYMENT" == "blue" ]; then
   echo `date -u` ":creating symlink for BLUE deployment" >> /tmp/deploylog.txt
   ln -s /efs/blue /var/www/html
   configure_httpd
 fi  
else
    if [ "$CURRENT_DEPLOYMENT" == "green" ]; then
      echo `date -u` ":creating symlink for BLUE deployment" >> /tmp/deploylog.txt
      ln -s /efs/blue /var/www/html
	  configure_httpd
	elif [ "$CURRENT_DEPLOYMENT" == "blue" ] || [ "$CURRENT_DEPLOYMENT" == "null" ]; then
	  echo `date -u` ":creating symlink for GREEN deployment" >> /tmp/deploylog.txt
      ln -s /efs/green /var/www/html
	  configure_httpd
	fi 
fi