##
# Example:
# make create-stack GITHUB_TOKEN=xxxxx ENVIRONMENT_NAME=staging STACK_NAME=api
# make create-stack GITHUB_TOKEN=xxxxx ENVIRONMENT_NAME=production STACK_NAME=api
#
# # make update-stack ENVIRONMENT_NAME=staging STACK_NAME=api
##

GITHUB_REPO := api2
GITHUB_USER := Photowall
# HOSTED_ZONE=photowall.com default in the template
# Cert ARN for the hosted zone
CERTIFICATE_ARN='arn:aws:acm:eu-west-1:954747537408:certificate/1278df32-006d-48a4-abd6-2bfccabb11fd'
DB_SECURITY_GROUP_ID_PRODUCTION=sg-0b5bafc1e0a97e848
DB_SECURITY_GROUP_ID_STAGING=sg-001b3667edf19e1ce

AWS_REGION=$(shell aws configure get region)
AWS_ACCOUNT_ID=$(shell aws sts get-caller-identity --query Account --output text)

checkdef = $(if $(value $(1)),,$(error $(1) not set))

DOCKER_IMAGE=$(AWS_ACCOUNT_ID).dkr.ecr.$(AWS_REGION).amazonaws.com/$(STACK_NAME)-$(ENVIRONMENT_NAME)

ifeq ($(ENVIRONMENT_NAME),production)
	SUBDOMAIN=$(STACK_NAME)
	GITHUB_BRANCH=master
	DB_SECURITY_GROUP_ID=$(DB_SECURITY_GROUP_ID_PRODUCTION)
	CPU_SIZE=1024
	MEMORY_SIZE=4GB
	BERNARD_SQS_POLICY=arn:aws:iam::954747537408:policy/pw-publish-photowall-bernard-live-queue
else
	SUBDOMAIN=$(STACK_NAME)-$(ENVIRONMENT_NAME)
	GITHUB_BRANCH=$(ENVIRONMENT_NAME)
	DB_SECURITY_GROUP_ID=$(DB_SECURITY_GROUP_ID_STAGING)
	CPU_SIZE=512
	MEMORY_SIZE=2GB
	BERNARD_SQS_POLICY=arn:aws:iam::954747537408:policy/pw-publish-photowall-bernard-stage-queue
endif

check-create-initial-ecr-image:
	@echo Checking for inital image $(DOCKER_IMAGE)
	@aws ecr list-images --repository-name $(STACK_NAME)-$(ENVIRONMENT_NAME) 2>/dev/null | grep imageTag | grep -q latest; \
			status=$$?; \
			if [ $$status != 0 ]; \
			then \
				echo ""; \
				echo "ECR Repo for initial image does not exist, creating"; \
				echo ""; \
				aws ecr create-repository --repository $(STACK_NAME)-$(ENVIRONMENT_NAME); \
				$$(aws ecr get-login --no-include-email --region eu-west-1); \
				docker pull nginx; \
				docker tag nginx $(AWS_ACCOUNT_ID).dkr.ecr.$(AWS_REGION).amazonaws.com/$(STACK_NAME)-$(ENVIRONMENT_NAME):latest; \
				docker push $(AWS_ACCOUNT_ID).dkr.ecr.$(AWS_REGION).amazonaws.com/$(STACK_NAME)-$(ENVIRONMENT_NAME):latest; \
				echo ""; \
			fi

check-create-variables-set:
	$(call checkdef,STACK_NAME)
	$(call checkdef,ENVIRONMENT_NAME)
	$(call checkdef,GITHUB_TOKEN)
	$(call checkdef,GITHUB_USER)
	$(call checkdef,GITHUB_REPO)

create-stack: check-create-variables-set check-create-initial-ecr-image
	aws cloudformation create-stack --stack-name $(STACK_NAME)-$(ENVIRONMENT_NAME) --template-body file://ecs-service.yaml \
		--capabilities CAPABILITY_NAMED_IAM \
		--parameters ParameterKey="EnvironmentName",ParameterValue="$(ENVIRONMENT_NAME)" \
								 ParameterKey="Image",ParameterValue="$(DOCKER_IMAGE)" \
		             ParameterKey="Subdomain",ParameterValue="$(SUBDOMAIN)" \
		             ParameterKey="Certificate",ParameterValue="$(CERTIFICATE_ARN)" \
		             ParameterKey="DatabaseSecurityGroup",ParameterValue="$(DB_SECURITY_GROUP_ID)" \
		             ParameterKey="GitHubRepo",ParameterValue="$(GITHUB_REPO)" \
								 ParameterKey="GitHubUser",ParameterValue="$(GITHUB_USER)" \
								 ParameterKey="GitHubBranch",ParameterValue="$(GITHUB_BRANCH)" \
								 ParameterKey="GitHubToken",ParameterValue="$(GITHUB_TOKEN)" \
								 ParameterKey="CpuSize",ParameterValue="$(CPU_SIZE)" \
								 ParameterKey="MemorySize",ParameterValue="$(MEMORY_SIZE)" \
								 ParameterKey="BernardSQSPolicy",ParameterValue="$(BERNARD_SQS_POLICY)"

update-stack:
	$(call checkdef,STACK_NAME)
	$(call checkdef,ENVIRONMENT_NAME)
	aws cloudformation update-stack --stack-name $(STACK_NAME)-$(ENVIRONMENT_NAME) --template-body file://ecs-service.yaml \
		--capabilities CAPABILITY_NAMED_IAM \
		--parameters ParameterKey="EnvironmentName",UsePreviousValue=true \
								 ParameterKey="Image",UsePreviousValue=true \
		             ParameterKey="Subdomain",UsePreviousValue=true \
		             ParameterKey="Certificate",UsePreviousValue=true \
		             ParameterKey="DatabaseSecurityGroup",,UsePreviousValue=true \
		             ParameterKey="GitHubRepo",UsePreviousValue=true \
								 ParameterKey="GitHubUser",UsePreviousValue=true \
								 ParameterKey="GitHubBranch",UsePreviousValue=true \
								 ParameterKey="GitHubToken",UsePreviousValue=true \
								 ParameterKey="CpuSize",ParameterValue="$(CPU_SIZE)" \
								 ParameterKey="MemorySize",ParameterValue="$(MEMORY_SIZE)" \
								 ParameterKey="BernardSQSPolicy",ParameterValue="$(BERNARD_SQS_POLICY)"