#!/bin/bash


function list-resources-in-region {
	echo "---" 
	echo "# Region: $1"
	echo "---" 
	echo -e "\n## EC2:"
	aws --region=$1 ec2 describe-instances --query 'Reservations[*].Instances[*].[InstanceId, Tags[?Key==`Name`].Value[] | [0], PlatformDetails, InstanceType,PrivateIpAddress]' --output json | jq -cr '.[][] | @tsv' | tr -d '[\" '  

	echo -e "\n## RDS:"
	aws --region=$1 rds describe-db-instances --query 'DBInstances[*].[DBInstanceIdentifier, DBInstanceClass, Engine, AllocatedStorage]' --output json | jq -cr '.[]|@tsv' | tr -d \"

	echo -e "\n## ElastiCache:"
	aws --region=$1 elasticache describe-cache-clusters --query 'CacheClusters[*].[CacheClusterId, CacheNodeType, Engine, EngineVersion]' --output json | jq -cr '.[]|@tsv' | tr -d \"

	echo -e "\n## ELB:"
	aws --region=$1 elb describe-load-balancers --query 'LoadBalancerDescriptions[*].[LoadBalancerName,DNSName,Scheme]' --output json | jq -cr '.[]|@tsv' | tr -d \" 

	echo -e "\n## ALB:"
	aws --region=$1 elbv2 describe-load-balancers --query 'LoadBalancers[*].[LoadBalancerName,DNSName,Scheme]' --output json | jq -cr '.[]|@tsv' | tr -d \"

	echo -e "\n## VPC:"
	aws --region=$1 ec2 describe-vpcs --query 'Vpcs[*].[VpcId, CidrBlock]' --output json | jq -cr '.[]|@tsv' | tr -d \"

	echo -e "\n## ECS_Clusters:"
	aws --region=$1 ecs list-clusters | jq -cr '.[][]' | awk -F/ '{print $NF}'

	echo -e "\n## EKS_Clusters:"
	aws --region=$1 eks list-clusters | jq '.[][]' | awk -F/ '{print $NF}'

	echo -e "\n## EFS:"
	aws --region=$1 efs describe-file-systems --output text

	echo -e "\n## EMR:"
	aws --region=$1 emr list-clusters --output text

	# global resources
	if [ $1 == "us-east-1" ]; then
		echo -e "\n## Route53_zones:"
		aws --region=$1 --no-cli-pager route53 list-hosted-zones --query 'HostedZones[].Name' --output text | tr '\t' '\n'

		echo -e "\n## S3_Buckets:"
        	aws --region=$1 s3api list-buckets --output text | awk '{print $NF}'

		echo -e "\n## Cloudfront:"
        	aws --region=$1 cloudfront list-distributions --query 'DistributionList.Items[*].[DomainName]' --output text
	fi
} 

# Generate inventory of ec2, rds, lb, and s3 buckets.
export -f list-resources-in-region
aws --region=us-east-1 ec2 describe-regions --query Regions[].RegionName --output text | sed -e 's/\t/\n/g' | parallel list-resources-in-region {}
#aws --region=us-east-1 ec2 describe-regions --query Regions[].RegionName --output text | sed -e 's/\t/\n/g' | while read r; do
#	list-resources-in-region $r > /tmp/aws-inventory-$r.txt &
#done

# echo "This may take a moment..."
# sleep 50

#cat /tmp/aws-inventory*.txt
#rm -f /tmp/aws-inventory*.txt