# If using QubesOS, the smart card must be connected directly to the qube,
# rather than using a 'vault' qube.

BACKEND_TF := $(wildcard infra/backend/*.tf)
MAIN_TF := $(wildcard infra/main/*.tf)
ENVIRONMENT := production
REGION := sfo3
ROOT_DIR := $(shell pwd)
KEYS := \
	6B61ECD76088748C70590D55E90A401336C8AAA9 \
	88823A75ECAA786B0FF38B148E401478A3FBEF72 \
	3D7C8D39E8C4DF771583D3F0A8A091FD346001CA \
	F4BF5C81EC78A5DD341C91EEDC4B7D1F52E0BA4D

EXTRA_ARGS :=
GPG_TTY ?= $(shell tty)
PLATFORM ?= linux/amd64
PROGRESS ?= auto
REGISTRY ?= git.distrust.co/public
VERSION := latest
SHELL=/bin/bash
SOPS := sops

ifeq ($(NOCACHE), 1)
NOCACHE_FLAG=--no-cache
else
NOCACHE_FLAG=
endif
export NOCACHE_FLAG

include $(PWD)/src/make/macros.mk

.ONESHELL:

.DEFAULT_GOAL :=
.PHONY: default
default: \
	tofu-apply

.PHONY: clean
clean:
	rm -rf $(CACHE_DIR)

out:
	mkdir out

.PHONY: shell
shell: build-tools load-tools
	$(call run-container, -v $${PWD}:/home/user/stack:rw, $(REGISTRY)/tools:latest, /bin/bash)

.PHONY: credentials
credentials: \
	$(CACHE_DIR)/secrets/credentials.tfvars

infra/backend/.terraform: $(BACKEND_TF)
	sops exec-env secrets/$(ENVIRONMENT).enc.env -- '\
		tofu -chdir=infra/backend init -upgrade && \
		tofu -chdir=infra/backend refresh \
			-var environment=$(ENVIRONMENT) \
			-var namespace=$(ENVIRONMENT) \
			-var region=$(REGION) \
			-state $(ENVIRONMENT).tfstate'

infra/main/.terraform: \
                       config/$(ENVIRONMENT).tfbackend \
                       $(MAIN_TF)
	sops exec-env secrets/$(ENVIRONMENT).enc.env -- '\
		tofu -chdir=infra/main init -upgrade \
			-backend-config="../../config/$(ENVIRONMENT).tfbackend" && \
		tofu -chdir=infra/main refresh \
			-var environment=$(ENVIRONMENT) \
			-var namespace=$(ENVIRONMENT) \
			-var region=$(REGION) \
			-state $(ENVIRONMENT).tfstate'

infra/backend/$(ENVIRONMENT).tfstate: infra/backend/.terraform
	sops exec-env secrets/$(ENVIRONMENT).enc.env -- '\
		tofu -chdir=infra/backend apply \
			-var environment=$(ENVIRONMENT) \
			-var namespace=$(ENVIRONMENT) \
			-var region=$(REGION) \
			-state $(ENVIRONMENT).tfstate'

config/$(ENVIRONMENT).tfbackend: infra/backend/$(ENVIRONMENT).tfstate
	sops exec-env secrets/$(ENVIRONMENT).enc.env -- '\
		tofu -chdir=infra/backend output \
			-state $(ENVIRONMENT).tfstate > $@ && \
		tofu -chdir=infra/backend refresh \
			-var environment=$(ENVIRONMENT) \
			-var namespace=$(ENVIRONMENT) \
			-var region=$(REGION) \
			-state $(ENVIRONMENT).tfstate'

build-%: REVISION = $(shell git rev-list -1 HEAD -- images/$*)
build-%: SOURCE_DATE_EPOCH = $(shell git log -1 --format=%ct $(REVISION))
build-%: images/tools/Containerfile | out
	export SOURCE_DATE_EPOCH
	$(call build-container,$*,$(VERSION),$<,$(SOURCE_DATE_EPOCH),$(REVISION))

load-%: build-%
	$(call import-container,$*)

push-%: build-% load-%
	docker push $(REGISTRY)/$*:$(VERSION)

out/tools-image.digest: out build-tools

infra/main/talos:
	mkdir -p $@

infra/main/talos/%: secrets/$(ENVIRONMENT).% | infra/main/talos
	$(SOPS) --decrypt $< > $@

.PHONY: tofu-plan
tofu-plan: infra/main/.terraform
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).talosconfig,infra/main/talos/talosconfig)
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).kubeconfig,infra/main/talos/kubeconfig)
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).controlplane.yaml,infra/main/talos/controlplane.yaml)
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).worker.yaml,infra/main/talos/worker.yaml)
	sops exec-env secrets/$(ENVIRONMENT).enc.env -- \
	'tofu -chdir=infra/main plan \
		-var environment=$(ENVIRONMENT) \
		-var namespace=$(ENVIRONMENT) \
		-var region=$(REGION) \
		$(EXTRA_ARGS)'
	$(call maybe_encrypt_secret,infra/main/talos/talosconfig,secrets/$(ENVIRONMENT).talosconfig)
	$(call maybe_encrypt_secret,infra/main/talos/kubeconfig,secrets/$(ENVIRONMENT).kubeconfig)
	$(call maybe_encrypt_secret,infra/main/talos/controlplane.yaml,secrets/$(ENVIRONMENT).controlplane.yaml)
	$(call maybe_encrypt_secret,infra/main/talos/worker.yaml,secrets/$(ENVIRONMENT).worker.yaml)

.PHONY: tofu-apply
tofu-apply: \
	$(TERRAFORM) \
	$(SOPS) \
	infra/main/.terraform
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).talosconfig,infra/main/talos/talosconfig)
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).kubeconfig,infra/main/talos/kubeconfig)
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).controlplane.yaml,infra/main/talos/controlplane.yaml)
	$(call maybe_decrypt_secret,secrets/$(ENVIRONMENT).worker.yaml,infra/main/talos/worker.yaml)
	$(SOPS) exec-env secrets/$(ENVIRONMENT).enc.env '\
		env -C infra/main \
		$(TERRAFORM) apply \
		-var environment=$(ENVIRONMENT) \
		-var namespace=$(ENVIRONMENT) \
		-var region=$(REGION) \
		$(EXTRA_ARGS) '
	$(call maybe_encrypt_secret,infra/main/talos/talosconfig,secrets/$(ENVIRONMENT).talosconfig)
	$(call maybe_encrypt_secret,infra/main/talos/kubeconfig,secrets/$(ENVIRONMENT).kubeconfig)
	$(call maybe_encrypt_secret,infra/main/talos/controlplane.yaml,secrets/$(ENVIRONMENT).controlplane.yaml)
	$(call maybe_encrypt_secret,infra/main/talos/worker.yaml,secrets/$(ENVIRONMENT).worker.yaml)

kustomizations/%/out.yaml: kustomizations/%
	env -C kustomizations/$(TARGET) -- kustomize build --enable-alpha-plugins . > $@ 

.PHONY: k8s-apply
k8s-apply: kustomizations/$(TARGET)/out.yaml
	sops exec-file --no-fifo "$${HOME}/stack/secrets/production.kubeconfig" "KUBECONFIG={} /usr/bin/kubectl apply -f $<"
	rm $< 

$(CACHE_DIR)/secrets:
	mkdir -p $@