Makefile

ENV := $(shell cat .last_used_env || echo "not-set")
-include .env.${ENV}


tf_vars := TF_VAR_gcp_project_id=$(GCP_PROJECT_ID) \
	TF_VAR_gcp_region=$(GCP_REGION) \
	TF_VAR_gcp_zone=$(GCP_ZONE) \
	TF_VAR_prefix=$(PREFIX) \
	TF_VAR_terraform_state_bucket=$(TERRAFORM_STATE_BUCKET)

# Login for Packer and Docker (uses gcloud user creds)
# Login for Terraform (uses application default creds)
.PHONY: login-gcloud
login-gcloud:
	gcloud auth login
	gcloud config set project "$(GCP_PROJECT_ID)"
	gcloud --quiet auth configure-docker "$(GCP_REGION)-docker.pkg.dev"
	gcloud auth application-default login

.PHONY: init
init:
	@ printf "Initializing Terraform for env: `tput setaf 2``tput bold`$(ENV)`tput sgr0`\n\n"
	terraform init -input=false -backend-config="bucket=${TERRAFORM_STATE_BUCKET}"

.PHONY: plan
plan:
	@ printf "Planning Terraform for env: `tput setaf 2``tput bold`$(ENV)`tput sgr0`\n\n"
	terraform fmt -recursive
	$(tf_vars) terraform plan -compact-warnings -detailed-exitcode

.PHONY: apply
apply:
	@ printf "Applying Terraform for env: `tput setaf 2``tput bold`$(ENV)`tput sgr0`\n\n"
	$(tf_vars) \
	terraform apply \
	-auto-approve \
	-input=false \
	-compact-warnings \
	-parallelism=20

.PHONY: destroy
destroy:
	@ printf "Destroying Terraform for env: `tput setaf 2``tput bold`$(ENV)`tput sgr0`\n\n"
	$(tf_vars) \
	terraform destroy \
	-input=false \
	-compact-warnings \
	-parallelism=20

.PHONY: switch-env
switch-env:
	@ touch .last_used_env
	@ printf "Switching from `tput setaf 1``tput bold`$(shell cat .last_used_env)`tput sgr0` to `tput setaf 2``tput bold`$(ENV)`tput sgr0`\n\n"
	@ echo $(ENV) > .last_used_env
	@ . .env.${ENV}
	terraform init -input=false -reconfigure -backend-config="bucket=${TERRAFORM_STATE_BUCKET}"