HUGO_VERSION      = $(shell grep ^HUGO_VERSION netlify.toml | tail -n 1 | cut -d '=' -f 2 | tr -d " \"\n")
NODE_BIN          = node_modules/.bin
NETLIFY_FUNC      = $(NODE_BIN)/netlify-lambda

# The segments variable is used to specify which segments to render.
segments          ?= all

# The CONTAINER_ENGINE variable is used for specifying the container engine. By default 'docker' is used
# but this can be overridden when calling make, e.g.
# CONTAINER_ENGINE=podman make container-image
CONTAINER_ENGINE ?= docker
IMAGE_REGISTRY ?= gcr.io/k8s-staging-sig-docs
IMAGE_VERSION=$(shell scripts/hash-files.sh Dockerfile Makefile netlify.toml .dockerignore cloudbuild.yaml package.json package-lock.json | cut -c 1-12)
CONTAINER_IMAGE   = $(IMAGE_REGISTRY)/k8s-website-hugo:v$(HUGO_VERSION)-$(IMAGE_VERSION)
# Mount read-only to allow use with tools like Podman in SELinux mode
# Container targets don't need to write into /src
CONTAINER_RUN     = "$(CONTAINER_ENGINE)" run --rm --interactive --tty --volume "$(CURDIR):/src:ro,Z"
CONTAINER_RUN_TTY = "$(CONTAINER_ENGINE)" run --rm --interactive --tty
CONTAINER_HUGO_MOUNTS = \
	--read-only \
	--mount type=bind,source=$(CURDIR)/.git,target=/src/.git,readonly \
	--mount type=bind,source=$(CURDIR)/archetypes,target=/src/archetypes,readonly \
	--mount type=bind,source=$(CURDIR)/assets,target=/src/assets,readonly \
	--mount type=bind,source=$(CURDIR)/content,target=/src/content,readonly \
	--mount type=bind,source=$(CURDIR)/data,target=/src/data,readonly \
	--mount type=bind,source=$(CURDIR)/i18n,target=/src/i18n,readonly \
	--mount type=bind,source=$(CURDIR)/layouts,target=/src/layouts,readonly \
	--mount type=bind,source=$(CURDIR)/static,target=/src/static,readonly \
	--mount type=tmpfs,destination=/tmp,tmpfs-mode=01777 \
	--mount type=bind,source=$(CURDIR)/hugo.toml,target=/src/hugo.toml,readonly \
	--mount type=bind,source=$(CURDIR)/hugo.server.toml,target=/src/hugo.server.toml,readonly

CCRED=\033[0;31m
CCEND=\033[0m

# Docker buildx related settings for multi-arch images
DOCKER_BUILDX ?= docker buildx

.PHONY: all build build-preview help serve

help: ## Show this help.
	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {sub("\\\\n",sprintf("\n%22c"," "), $$2);printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)

module-check: ## Check if all of the required submodules are correctly initialized.
	@git submodule status --recursive | awk '/^[+-]/ {err = 1; printf "\033[31mWARNING\033[0m Submodule not initialized: \033[34m%s\033[0m\n",$$2} END { if (err != 0) print "You need to run \033[32mmake module-init\033[0m to initialize missing modules first"; exit err }' 1>&2

module-init: ## Initialize required submodules.
	@echo "Initializing submodules..." 1>&2
	@git submodule update --init --recursive --depth 1

all: build ## Build site with production settings and put deliverables in ./public

build: module-check ## Build site with non-production settings and put deliverables in ./public
	hugo --cleanDestinationDir --minify --environment development

build-preview: module-check ## Build site with drafts and future posts enabled
	hugo --cleanDestinationDir --buildDrafts --buildFuture --environment preview

deploy-preview: ## Deploy preview site via netlify
	hugo --cleanDestinationDir --enableGitInfo --buildDrafts --buildFuture --environment preview -b $(DEPLOY_PRIME_URL)

functions-build:
	$(NETLIFY_FUNC) build functions-src

check-headers-file:
	scripts/check-headers-file.sh

production-build: module-check ## Build the production site and ensure that noindex headers aren't added
	hugo --cleanDestinationDir --minify --environment production
	HUGO_ENV=production $(MAKE) check-headers-file

non-production-build: module-check ## Build the non-production site, which adds noindex headers to prevent indexing
	hugo --cleanDestinationDir --enableGitInfo --environment nonprod

serve: module-check ## Boot the development server.
	hugo server --config hugo.toml,hugo.server.toml --buildDrafts --buildFuture --environment development --renderSegments $(segments)

docker-image:
	@echo -e "$(CCRED)**** The use of docker-image is deprecated. Use container-image instead. ****$(CCEND)"
	$(MAKE) container-image

docker-build:
	@echo -e "$(CCRED)**** The use of docker-build is deprecated. Use container-build instead. ****$(CCEND)"
	$(MAKE) container-build

docker-serve:
	@echo -e "$(CCRED)**** The use of docker-serve is deprecated. Use container-serve instead. ****$(CCEND)"
	$(MAKE) container-serve

container-image: ## Build a container image for the preview of the website
	$(CONTAINER_ENGINE) build . \
		--network=host \
		--tag $(CONTAINER_IMAGE) \
		--build-arg HUGO_VERSION=$(HUGO_VERSION)

container-push: container-image ## Push container image for the preview of the website
	$(CONTAINER_ENGINE) push $(CONTAINER_IMAGE)

PLATFORMS ?= linux/arm64,linux/amd64
docker-push: ## Build a multi-architecture image and push that into the registry
	docker run --rm --privileged tonistiigi/binfmt:qemu-v8.1.5-43@sha256:46c5a036f13b8ad845d6703d38f8cce6dd7c0a1e4d42ac80792279cabaeff7fb --install all
	docker version
	$(DOCKER_BUILDX) version
	$(DOCKER_BUILDX) inspect image-builder > /dev/null 2>&1 || $(DOCKER_BUILDX) create --name image-builder --use
	# copy existing Dockerfile and insert --platform=${TARGETPLATFORM} into Dockerfile.cross, and preserve the original Dockerfile
	sed -e 's/\(^FROM\)/FROM --platform=\$$\{TARGETPLATFORM\}/' Dockerfile > Dockerfile.cross
	$(DOCKER_BUILDX) build \
		--push \
		--platform=$(PLATFORMS) \
		--build-arg HUGO_VERSION=$(HUGO_VERSION) \
		--tag $(CONTAINER_IMAGE) \
		-f Dockerfile.cross .
	$(DOCKER_BUILDX) stop image-builder
	rm Dockerfile.cross

container-build: module-check
	mkdir -p public
	$(CONTAINER_RUN_TTY) $(CONTAINER_HUGO_MOUNTS) $(CONTAINER_IMAGE) \
		hugo --destination /tmp/public --cleanDestinationDir --buildDrafts --buildFuture --environment preview --noBuildLock

# no build lock to allow for read-only mounts
container-serve: module-check ## Boot the development server using container.
	$(CONTAINER_RUN_TTY) --cap-drop=ALL --cap-add=AUDIT_WRITE $(CONTAINER_HUGO_MOUNTS) \
		-p 1313:1313 $(CONTAINER_IMAGE) \
		hugo server --config hugo.toml,hugo.server.toml --buildDrafts --buildFuture --environment development --bind 0.0.0.0 --destination /tmp/public --cleanDestinationDir --noBuildLock --renderSegments $(segments)

test-examples:
	scripts/test_examples.sh install
	scripts/test_examples.sh run

.PHONY: link-checker-setup
link-checker-image-pull:
	$(CONTAINER_ENGINE) pull wjdp/htmltest

docker-internal-linkcheck:
	@echo -e "$(CCRED)**** The use of docker-internal-linkcheck is deprecated. Use container-internal-linkcheck instead. ****$(CCEND)"
	$(MAKE) container-internal-linkcheck

container-internal-linkcheck: link-checker-image-pull
	$(CONTAINER_RUN) $(CONTAINER_IMAGE) hugo --config config.toml,linkcheck-config.toml --buildFuture --environment test
	$(CONTAINER_ENGINE) run --mount "type=bind,source=$(CURDIR),target=/test" --rm wjdp/htmltest htmltest

clean-api-reference: ## Clean all directories in API reference directory, preserve _index.md
	rm -rf content/en/docs/reference/kubernetes-api/*/

api-reference: clean-api-reference ## Build the API reference pages. go needed
	cd api-ref-generator/gen-resourcesdocs && \
		go run cmd/main.go kwebsite --config-dir ../../api-ref-assets/config/ --file ../../api-ref-assets/api/swagger.json --output-dir ../../content/en/docs/reference/kubernetes-api --templates ../../api-ref-assets/templates