.DEFAULT_GOAL := help

# Root directory of the project (absolute path).
ROOTDIR=$(dir $(abspath $(lastword $(MAKEFILE_LIST))))

# Used to populate version variable in main package.
VERSION ?= $(shell git describe --match 'v[0-9]*' --dirty='.m' --always)
REVISION ?= $(shell git rev-parse HEAD)$(shell if ! git diff --no-ext-diff --quiet --exit-code; then echo .m; fi)


PKG=github.com/distribution/distribution/v3

# Project packages.
PACKAGES=$(shell go list -tags "${BUILDTAGS}" ./... | grep -v /vendor/)
INTEGRATION_PACKAGE=${PKG}
COVERAGE_PACKAGES=$(filter-out ${PKG}/registry/storage/driver/%,${PACKAGES})

IMAGE_REPO ?= distribution/distribution
IMAGE_TAG ?= latest
IMAGE_NAME ?= $(IMAGE_REPO):$(IMAGE_TAG)

# Project binaries.
COMMANDS=registry digest registry-api-descriptor-template

# Allow turning off function inlining and variable registerization
ifeq (${DISABLE_OPTIMIZATION},true)
	GO_GCFLAGS=-gcflags "-N -l"
	VERSION:="$(VERSION)-noopt"
endif

WHALE = "+"

# Go files
#
TESTFLAGS_RACE=
GOFILES=$(shell find . -type f -name '*.go')
GO_TAGS=$(if $(BUILDTAGS),-tags "$(BUILDTAGS)",)
GO_LDFLAGS=-ldflags '-extldflags "-Wl,-z,now" -s -w -X $(PKG)/version.Version=$(VERSION) -X $(PKG)/version.Revision=$(REVISION) -X $(PKG)/version.Package=$(PKG) $(EXTRA_LDFLAGS)'

BINARIES=$(addprefix bin/,$(COMMANDS))

# Flags passed to `go test`
TESTFLAGS ?= -v $(TESTFLAGS_RACE)
TESTFLAGS_PARALLEL ?= 8

.PHONY: all build binaries clean test test-race test-full integration coverage validate lint validate-git validate-vendor vendor mod-outdated image
.DEFAULT: all

.PHONY: FORCE
FORCE:

##@ Build

# This only needs to be generated by hand when cutting full releases.
version/version.go:
	@echo "$(WHALE) $@"
	./version/version.sh > $@

bin/%: cmd/% FORCE ## build individual binary
	@echo "$(WHALE) $@${BINARY_SUFFIX}"
	@go build -buildmode=pie ${GO_GCFLAGS} ${GO_BUILD_FLAGS} -o $@${BINARY_SUFFIX} ${GO_LDFLAGS} --ldflags '-extldflags "-Wl,-z,now" -s' ${GO_TAGS}  ./$<

binaries: $(BINARIES) ## build binaries
	@echo "$(WHALE) $@"

build: ## build go packages
	@echo "$(WHALE) $@"
	@go build -buildmode=pie ${GO_GCFLAGS} ${GO_BUILD_FLAGS} ${GO_LDFLAGS} --ldflags '-extldflags "-Wl,-z,now" -s' ${GO_TAGS} $(PACKAGES)

image: ## build docker image IMAGE_NAME=<name>
	docker buildx bake --set "*.tags=${IMAGE_NAME}" image-local

clean: ## clean up binaries
	@echo "$(WHALE) $@"
	@rm -f $(BINARIES)

vendor: ## update vendor
	$(eval $@_TMP_OUT := $(shell mktemp -d -t buildx-output.XXXXXXXXXX))
	docker buildx bake --set "*.output=$($@_TMP_OUT)" update-vendor
	rm -rf ./vendor
	cp -R "$($@_TMP_OUT)"/out/* .
	rm -rf $($@_TMP_OUT)/*

mod-outdated: ## check outdated dependencies
	docker buildx bake $@

##@ Test

test: ## run tests, except integration test with test.short
	@echo "$(WHALE) $@"
	@go test ${GO_TAGS} -test.short ${TESTFLAGS} $(filter-out ${INTEGRATION_PACKAGE},${PACKAGES})

test-race: ## run tests, except integration test with test.short and race
	@echo "$(WHALE) $@"
	@go test ${GO_TAGS} -race -test.short ${TESTFLAGS} $(filter-out ${INTEGRATION_PACKAGE},${PACKAGES})

test-full: ## run tests, except integration tests
	@echo "$(WHALE) $@"
	@go test ${GO_TAGS} ${TESTFLAGS} $(filter-out ${INTEGRATION_PACKAGE},${PACKAGES})

integration: ## run integration tests
	@echo "$(WHALE) $@"
	@go test ${TESTFLAGS} -parallel ${TESTFLAGS_PARALLEL} ${INTEGRATION_PACKAGE}

coverage: ## generate coverprofiles from the unit tests
	@echo "$(WHALE) $@"
	@rm -f coverage.txt
	@go test ${GO_TAGS} -i ${TESTFLAGS} $(filter-out ${INTEGRATION_PACKAGE},${COVERAGE_PACKAGES}) 2> /dev/null
	@( for pkg in $(filter-out ${INTEGRATION_PACKAGE},${COVERAGE_PACKAGES}); do \
		go test ${GO_TAGS} ${TESTFLAGS} \
			-cover \
			-coverprofile=profile.out \
			-covermode=atomic $$pkg || exit; \
		if [ -f profile.out ]; then \
			cat profile.out >> coverage.txt; \
			rm profile.out; \
		fi; \
	done )

.PHONY: test-cloud-storage
test-cloud-storage: start-cloud-storage run-s3-tests stop-cloud-storage ## run cloud storage driver tests

.PHONY: start-cloud-storage
start-cloud-storage: ## start local cloud storage (minio)
	docker compose -f tests/docker-compose-storage.yml up minio minio-init -d

.PHONY: stop-cloud-storage
stop-cloud-storage: ## stop local cloud storage (minio)
	docker compose -f tests/docker-compose-storage.yml down

.PHONY: reset-cloud-storage
reset-cloud-storage: ## reset (stop, delete, start) local cloud storage (minio)
	docker compose -f tests/docker-compose-storage.yml down
	@mkdir -p tests/miniodata/distribution
	@rm -rf tests/miniodata/distribution/* tests/miniodata/.minio.sys
	docker compose -f tests/docker-compose-storage.yml up minio minio-init -d

.PHONY: run-s3-tests
run-s3-tests: ## run S3 storage driver integration tests
	AWS_ACCESS_KEY=distribution \
	AWS_SECRET_KEY=password \
	AWS_REGION=us-east-1 \
	S3_BUCKET=images-local \
	S3_ENCRYPT=false \
	REGION_ENDPOINT=http://127.0.0.1:9000 \
	S3_SECURE=false \
	go test -v -count=1 ./registry/storage/driver/s3-aws/...

##@ Validate

lint: ## run all linters
	docker buildx bake $@

validate: ## run all validators
	docker buildx bake $@

validate-git: ## validate git
	docker buildx bake $@

validate-vendor: ## validate vendor
	docker buildx bake $@

.PHONY: help
help:
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m\033[0m\n"} /^[a-zA-Z0-9_\/%-]+:.*?##/ { printf "  \033[36m%-27s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
	@echo ""
	@echo "Go binaries:   $(BINARIES)"
	@echo "Docker image: $(IMAGE_NAME)"