REGISTRY?=directxman12
IMAGE?=k8s-prometheus-adapter
TEMP_DIR:=$(shell mktemp -d)
ARCH?=amd64
ALL_ARCH=amd64 arm arm64 ppc64le s390x
ML_PLATFORMS=linux/amd64,linux/arm,linux/arm64,linux/ppc64le,linux/s390x
OUT_DIR?=./_output

VERSION?=latest

ifeq ($(ARCH),amd64)
	BASEIMAGE?=busybox
endif
ifeq ($(ARCH),arm)
	BASEIMAGE?=armhf/busybox
endif
ifeq ($(ARCH),arm64)
	BASEIMAGE?=aarch64/busybox
endif
ifeq ($(ARCH),ppc64le)
	BASEIMAGE?=ppc64le/busybox
endif
ifeq ($(ARCH),s390x)
	BASEIMAGE?=s390x/busybox
endif

.PHONY: all build docker-build push-% push test verify-gofmt gofmt verify

all: build
build: vendor
	CGO_ENABLED=0 GOARCH=$(ARCH) go build -a -tags netgo -o $(OUT_DIR)/$(ARCH)/adapter github.com/directxman12/k8s-prometheus-adapter/cmd/adapter

docker-build: vendor
	cp deploy/Dockerfile $(TEMP_DIR)
	cd $(TEMP_DIR) && sed -i "s|BASEIMAGE|$(BASEIMAGE)|g" Dockerfile

	docker run -it -v $(TEMP_DIR):/build -v $(shell pwd):/go/src/github.com/directxman12/k8s-prometheus-adapter -e GOARCH=$(ARCH) golang:1.8 /bin/bash -c "\
		CGO_ENABLED=0 go build -a -tags netgo -o /build/adapter github.com/directxman12/k8s-prometheus-adapter/cmd/adapter"

	docker build -t $(REGISTRY)/$(IMAGE)-$(ARCH):$(VERSION) $(TEMP_DIR)
	sudo rm -r $(TEMP_DIR)

push-%:
	$(MAKE) ARCH=$* docker-build
	docker push $(REGISTRY)/$(IMAGE)-$*:$(VERSION)

push: ./manifest-tool $(addprefix push-,$(ALL_ARCH))
	./manifest-tool push from-args --platforms $(ML_PLATFORMS) --template $(REGISTRY)/$(IMAGE)-ARCH:$(VERSION) --target $(REGISTRY)/$(IMAGE):$(VERSION)

./manifest-tool:
	curl -sSL https://github.com/estesp/manifest-tool/releases/download/v0.5.0/manifest-tool-linux-amd64 > manifest-tool
	chmod +x manifest-tool

vendor: glide.lock
	glide install -v

test: vendor
	CGO_ENABLED=0 go test ./pkg/...

verify-gofmt:
	./hack/gofmt-all.sh -v

gofmt:
	./hack/gofmt-all.sh

verify: verify-gofmt test