# Image URL to use all building/pushing image targets
IMG ?= controller:latest
# Platforms to build the image for
PLATFORMS ?= linux/amd64,linux/arm64

# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
ifeq (,$(shell go env GOBIN))
GOBIN=$(shell go env GOPATH)/bin
else
GOBIN=$(shell go env GOBIN)
endif

# Setting SHELL to bash allows bash commands to be executed by recipes.
# This is a requirement for 'setup-envtest.sh' in the test target.
# Options are set to exit when a recipe line exits non-zero or a piped command fails.
SHELL = /usr/bin/env bash -o pipefail
.SHELLFLAGS = -ec

all: build

## Location to install dependencies to
TESTBIN ?= $(shell pwd)/testbin
$(TESTBIN):
	mkdir -p $(TESTBIN)

# ENVTEST_K8S_VERSION refers to the version of kubebuilder assets to be downloaded by envtest binary.
# Run `setup-envtest list` to list available versions.
ENVTEST_K8S_VERSION ?= 1.28.0

ENVTEST ?= $(TESTBIN)/setup-envtest

.PHONY: envtest
envtest: $(ENVTEST) ## Download envtest-setup locally if necessary.
$(ENVTEST): $(TESTBIN)
ifeq (, $(shell ls $(TESTBIN)/setup-envtest 2>/dev/null))
	GOBIN=$(TESTBIN) go install sigs.k8s.io/controller-runtime/tools/setup-envtest@c7e1dc9b5302d649d5531e19168dd7ea0013736d
endif

##@ General

# The help target prints out all targets with their descriptions organized
# beneath their categories. The categories are represented by '##@' and the
# target descriptions by '##'. The awk commands is responsible for reading the
# entire set of makefiles included in this invocation, looking for lines of the
# file as xyz: ## something, and then pretty-format the target and help. Then,
# if there's a line with ##@ something, that gets pretty-printed as a category.
# More info on the usage of ANSI control characters for terminal formatting:
# https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters
# More info on the awk command:
# http://linuxcommand.org/lc3_adv_awk.php

help: ## Display this help.
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)

##@ Development

manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
	$(CONTROLLER_GEN) crd:crdVersions=v1 paths="./api/..." output:crd:artifacts:config=config/crd/bases
	$(CONTROLLER_GEN) rbac:roleName=manager-role webhook paths="./..."

generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.
	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."

fmt: ## Run go fmt against code.
	go fmt ./...

vet: ## Run go vet against code.
	go vet ./...

ENVTEST_ASSETS_DIR=$(shell pwd)/testbin
test: manifests generate fmt vet envtest ## Run tests.
	echo $(ENVTEST)
	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) -p path)" go test -race ./pkg/... -coverprofile raw-cover.out
	grep -v "pkg/client" raw-cover.out > cover.out

##@ Build

build: manifests generate fmt vet ## Build manager binary.
	go build -o bin/manager main.go

run: manifests generate fmt vet ## Run a controller from your host.
	go run ./main.go

docker-build: ## Build docker image with the manager.
	docker build -t ${IMG} .

docker-push: ## Push docker image with the manager.
	docker push ${IMG}

# Build and push the multiarchitecture docker images and manifest.
docker-multiarch:
	docker buildx build -f ./Dockerfile_multiarch --pull --no-cache --platform=$(PLATFORMS) --push . -t $(IMG)
##@ Deployment

install: manifests kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
	$(KUSTOMIZE) build config/crd | kubectl apply -f -

uninstall: manifests kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config.
	$(KUSTOMIZE) build config/crd | kubectl delete -f -

deploy: manifests kustomize manifests ## Deploy controller to the K8s cluster specified in ~/.kube/config.
	cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG}
	$(KUSTOMIZE) build config/default | kubectl apply -f -
	echo -e "resources:\n- manager.yaml" > config/manager/kustomization.yaml

undeploy: ## Undeploy controller from the K8s cluster specified in ~/.kube/config.
	$(KUSTOMIZE) build config/default | kubectl delete -f -


CONTROLLER_GEN = $(shell pwd)/bin/controller-gen
CONTROLLER_GEN_VERSION = v0.14.0
controller-gen: ## Download controller-gen locally if necessary.
ifeq ("$(shell $(CONTROLLER_GEN) --version)", "Version: ${CONTROLLER_GEN_VERSION}")
else
	rm -rf $(CONTROLLER_GEN)
	$(call go-get-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen@${CONTROLLER_GEN_VERSION})
endif

KUSTOMIZE = $(shell pwd)/bin/kustomize
kustomize: ## Download kustomize locally if necessary.
	$(call go-get-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v4@v4.5.5)

GINKGO = $(shell pwd)/bin/ginkgo
ginkgo: ## Download ginkgo locally if necessary.
	$(call go-get-tool,$(GINKGO),github.com/onsi/ginkgo/ginkgo@v1.16.4)

HELM = $(shell pwd)/bin/helm
helm: ## Download helm locally if necessary.
	$(call go-get-tool,$(HELM),helm.sh/helm/v3/cmd/helm@v3.14.0)

# go-get-tool will 'go get' any package $2 and install it to $1.
PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
define go-get-tool
@[ -f $(1) ] || { \
set -e ;\
TMP_DIR=$$(mktemp -d) ;\
cd $$TMP_DIR ;\
go mod init tmp ;\
echo "Downloading $(2)" ;\
GOBIN=$(PROJECT_DIR)/bin go install $(2) ;\
rm -rf $$TMP_DIR ;\
}
endef