SHA := $(shell gitmeta git sha)
TAG := $(shell gitmeta image tag)
BUILT := $(shell gitmeta built)
PUSH := $(shell gitmeta pushable)

VPATH = $(PATH)
KERNEL_IMAGE ?= autonomy/kernel:65ec2e6
TOOLCHAIN_IMAGE ?= autonomy/toolchain:397b293
GOLANG_VERSION ?= 1.11.4
BUILDKIT_VERSION ?= v0.3.3
BUILDKIT_IMAGE ?= moby/buildkit:$(BUILDKIT_VERSION)
BUILDKIT_HOST ?= tcp://0.0.0.0:1234
BUILDKIT_CONTAINER_NAME ?= talos-buildkit
BUILDKIT_CONTAINER_STOPPED := $(shell docker ps --filter name=$(BUILDKIT_CONTAINER_NAME) --filter status=exited --format='{{.Names}}' 2>/dev/null)
BUILDKIT_CONTAINER_RUNNING := $(shell docker ps --filter name=$(BUILDKIT_CONTAINER_NAME) --filter status=running --format='{{.Names}}' 2>/dev/null)
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Linux)
BUILDCTL_ARCHIVE := https://github.com/moby/buildkit/releases/download/$(BUILDKIT_VERSION)/buildkit-$(BUILDKIT_VERSION).linux-amd64.tar.gz
endif
ifeq ($(UNAME_S),Darwin)
BUILDCTL_ARCHIVE := https://github.com/moby/buildkit/releases/download/$(BUILDKIT_VERSION)/buildkit-$(BUILDKIT_VERSION).darwin-amd64.tar.gz
endif
BINDIR ?= /usr/local/bin
CONFORM_VERSION ?= v0.1.0-alpha.10

COMMON_ARGS := --progress=plain
COMMON_ARGS += --frontend=dockerfile.v0
COMMON_ARGS += --local context=.
COMMON_ARGS += --local dockerfile=.
COMMON_ARGS += --frontend-opt build-arg:KERNEL_IMAGE=$(KERNEL_IMAGE)
COMMON_ARGS += --frontend-opt build-arg:TOOLCHAIN_IMAGE=$(TOOLCHAIN_IMAGE)
COMMON_ARGS += --frontend-opt build-arg:GOLANG_VERSION=$(GOLANG_VERSION)
COMMON_ARGS += --frontend-opt build-arg:SHA=$(SHA)
COMMON_ARGS += --frontend-opt build-arg:TAG=$(TAG)

all: ci kernel initramfs rootfs osctl-linux-amd64 osctl-darwin-amd64 test lint docs installer

.PHONY: builddeps
builddeps: gitmeta buildctl

gitmeta:
	GO111MODULE=off go get github.com/autonomy/gitmeta

buildctl:
	@wget -qO - $(BUILDCTL_ARCHIVE) | \
		sudo tar -zxf - -C $(BINDIR) --strip-components 1 bin/buildctl

.PHONY: buildkitd
buildkitd:
ifeq (tcp://0.0.0.0:1234,$(findstring tcp://0.0.0.0:1234,$(BUILDKIT_HOST)))
ifeq ($(BUILDKIT_CONTAINER_STOPPED),$(BUILDKIT_CONTAINER_NAME))
	@echo "Removing exited talos-buildkit container"
	@docker rm $(BUILDKIT_CONTAINER_NAME)
endif
ifneq ($(BUILDKIT_CONTAINER_RUNNING),$(BUILDKIT_CONTAINER_NAME))
	@echo "Starting talos-buildkit container"
	@docker run \
		--name $(BUILDKIT_CONTAINER_NAME) \
		-d \
		--privileged \
		 -p 1234:1234 \
		$(BUILDKIT_IMAGE) \
		--addr $(BUILDKIT_HOST)
	@echo "Wait for buildkitd to become available"
	@sleep 5
endif
endif

enforce:
	@docker run --rm -v $(PWD):/src -w /src autonomy/conform:$(CONFORM_VERSION)

.PHONY: ci
ci: builddeps buildkitd

base:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=docker \
		--exporter-opt output=build/$@.tar \
		--exporter-opt name=docker.io/autonomy/$@:$(TAG) \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)
	@docker load < build/$@.tar

kernel:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=local \
		--exporter-opt output=build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

initramfs:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=local \
		--exporter-opt output=build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

rootfs: hyperkube etcd coredns pause osd trustd proxyd blockd
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=local \
		--exporter-opt output=build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

installer:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=docker \
		--exporter-opt output=build/$@.tar \
		--exporter-opt name=docker.io/autonomy/$@:$(TAG) \
		--exporter-opt push=$(PUSH) \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)
	@docker load < build/$@.tar
	@docker run --rm -v /dev:/dev -v $(PWD)/build:/out --privileged autonomy/$@:$(TAG) image -l

.PHONY: docs
docs:
	@rm -rf ./docs
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=local \
		--exporter-opt output=. \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

test:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

lint:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

osctl-linux-amd64:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=local \
		--exporter-opt output=build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

osctl-darwin-amd64:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=local \
		--exporter-opt output=build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

udevd:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

osd:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=docker \
		--exporter-opt output=images/$@.tar \
		--exporter-opt name=docker.io/autonomy/$@:$(TAG) \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

trustd:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=docker \
		--exporter-opt output=images/$@.tar \
		--exporter-opt name=docker.io/autonomy/$@:$(TAG) \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

proxyd:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=docker \
		--exporter-opt output=images/$@.tar \
		--exporter-opt name=docker.io/autonomy/$@:$(TAG) \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

blockd:
	@buildctl --addr $(BUILDKIT_HOST) \
		build \
		--exporter=docker \
		--exporter-opt output=images/$@.tar \
		--exporter-opt name=docker.io/autonomy/$@:$(TAG) \
		--frontend-opt target=$@ \
		$(COMMON_ARGS)

hyperkube:
	@docker pull k8s.gcr.io/$@:v1.13.3
	@docker save k8s.gcr.io/$@:v1.13.3 -o ./images/$@.tar

etcd:
	@docker pull k8s.gcr.io/$@:3.2.24
	@docker save k8s.gcr.io/$@:3.2.24 -o ./images/$@.tar

coredns:
	@docker pull k8s.gcr.io/$@:1.2.6
	@docker save k8s.gcr.io/$@:1.2.6 -o ./images/$@.tar

pause:
	@docker pull k8s.gcr.io/$@:3.1
	@docker save k8s.gcr.io/$@:3.1 -o ./images/$@.tar

clean:
	-go clean -modcache
	-rm -rf build vendor