include ../config.mk

default: terraform

# I hate sed too and I am so sorry for what I'm about to do
terraform: terraform-check *.tf
	terraform init || terraform init -upgrade
	terraform apply
	terraform output | sed \
		-e 's/\(.*\) = /\U\1 = /' \
		-e 's/"//g' \
		-e '' \
		-e 'h;s/.* = //;s/\([.]\)/\\\1/g;x;s/ = .*//;G;s/\n/ = /' \
		-e 's/ \+$$//' \
		> terraform.mk

terraform-check: .toolcheck pubkey
	$(eval AWS_INSTANCE_PUBLIC_KEY := $(shell sed -e 's/\//\\\//g' pubkey))


#CONFIGVARS = AWS_INSTANCE_PUBLIC_KEY AWS_SINGLE_INSTANCE_TYPE
SEDLINE =

config.tf: sedline config.tf.in ../config.mk
	sed $(SEDLINE) config.tf.in > config.tf

#configvars: ../config.mk
#	$(eval CONFIGVARS := $(shell grep '^[0-9A-Z]' ../config.mk | awk '{print $1}'))
#	echo $(CONFIGVARS)

#sedline: configvars $(addprefix __sed_,$(CONFIGVARS))
sedline: $(addprefix __sed_,$(shell grep '^[0-9A-Z_]' ../config.mk | awk '{print $$1}'))

__sed_%:
	$(eval SEDLINE := $$(SEDLINE) -e 's/{{$*}}/$($*)/')


CHECK_TOOLS = terraform aws

# this relies on your credentials file, so that if you edit it, it will run again
.toolcheck: ~/.aws/credentials
	@echo
	@echo "Checking applications..."
	@   FAIL=""; \
		for TOOL in $(CHECK_TOOLS); do \
			which $${TOOL} >/dev/null || FAIL="$${FAIL} $${TOOL}"; \
		done; \
		if test -n "$${FAIL}"; then \
			echo "ERROR: You are missing the following:$${FAIL}"; \
			echo "Please make sure all necessary tools are installed and available in your path"; \
			echo; \
			exit 1; \
		fi
	
	@echo
	@echo "Checking AWS configuration..."
	aws iam get-user
	touch .toolcheck

# ...but if you don't have a credentials file, that's ok, it just runs the check every time
~/.aws/credentials:
	true

pubkey:
	if test -n "$(AWS_INSTANCE_PUBLIC_KEY)"; then \
		echo "$(AWS_INSTANCE_PUBLIC_KEY)" > pubkey; \
	else \
		ssh-keygen -t rsa -N "" -f privkey && mv privkey.pub pubkey; \
	fi

# clean doesn't touch tfstate because we're not insane
clean:
	rm -f privkey pubkey
	rm -rf .terraform*