# Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

DOCKER   ?= docker
MKDIR    ?= mkdir
DIST_DIR ?= $(CURDIR)/dist

include $(CURDIR)/versions.mk

MODULE := github.com/NVIDIA/nvidia-container-toolkit

# By default run all native docker-based targets
docker-native:
include $(CURDIR)/docker/docker.mk

ifeq ($(IMAGE_NAME),)
REGISTRY ?= nvidia
IMAGE_NAME = $(REGISTRY)/container-toolkit
endif

BUILDIMAGE_TAG ?= golang$(GOLANG_VERSION)
BUILDIMAGE ?= $(IMAGE_NAME)-build:$(BUILDIMAGE_TAG)

EXAMPLES := $(patsubst ./examples/%/,%,$(sort $(dir $(wildcard ./examples/*/))))
EXAMPLE_TARGETS := $(patsubst %,example-%, $(EXAMPLES))

CMDS := $(patsubst ./cmd/%/,%,$(sort $(dir $(wildcard ./cmd/*/))))
CMD_TARGETS := $(patsubst %,cmd-%, $(CMDS))

CHECK_TARGETS := lint
MAKE_TARGETS := binaries build check fmt test examples cmds coverage generate licenses vendor check-vendor $(CHECK_TARGETS)

TARGETS := $(MAKE_TARGETS) $(EXAMPLE_TARGETS) $(CMD_TARGETS)

DOCKER_TARGETS := $(patsubst %,docker-%, $(TARGETS))
.PHONY: $(TARGETS) $(DOCKER_TARGETS)

ifeq ($(VERSION),)
CLI_VERSION = $(LIB_VERSION)$(if $(LIB_TAG),-$(LIB_TAG))
else
CLI_VERSION = $(VERSION)
endif
CLI_VERSION_PACKAGE = github.com/NVIDIA/nvidia-container-toolkit/internal/info

binaries: cmds
ifneq ($(PREFIX),)
cmd-%: COMMAND_BUILD_OPTIONS = -o $(PREFIX)/$(*)
endif
cmds: $(CMD_TARGETS)

ifneq ($(shell uname),Darwin)
EXTLDFLAGS = -Wl,--export-dynamic -Wl,--unresolved-symbols=ignore-in-object-files
else
EXTLDFLAGS = -Wl,-undefined,dynamic_lookup
endif
$(CMD_TARGETS): cmd-%:
	go build -ldflags "-s -w '-extldflags=$(EXTLDFLAGS)' -X $(CLI_VERSION_PACKAGE).gitCommit=$(GIT_COMMIT) -X $(CLI_VERSION_PACKAGE).version=$(CLI_VERSION)" $(COMMAND_BUILD_OPTIONS) $(MODULE)/cmd/$(*)

build:
	go build ./...

examples: $(EXAMPLE_TARGETS)
$(EXAMPLE_TARGETS): example-%:
	go build ./examples/$(*)

all: check test build binary
check: $(CHECK_TARGETS)

# Apply go fmt to the codebase
fmt:
	go list -f '{{.Dir}}' $(MODULE)/... \
		| xargs gofmt -s -l -w

# Apply goimports -local github.com/NVIDIA/container-toolkit to the codebase
goimports:
	go list -f {{.Dir}} $(MODULE)/... \
		| xargs goimports -local $(MODULE) -w

lint:
	golangci-lint run ./...

vendor:
	go mod tidy
	go mod vendor
	go mod verify

check-vendor: vendor
	git diff --quiet HEAD -- go.mod go.sum vendor

licenses:
	go-licenses csv $(MODULE)/...

COVERAGE_FILE := coverage.out
test: build cmds
	go test -coverprofile=$(COVERAGE_FILE) $(MODULE)/...

coverage: test
	cat $(COVERAGE_FILE) | grep -v "_mock.go" > $(COVERAGE_FILE).no-mocks
	go tool cover -func=$(COVERAGE_FILE).no-mocks

generate:
	go generate $(MODULE)/...

# Generate an image for containerized builds
# Note: This image is local only
.PHONY: .build-image
.build-image:
	make -f deployments/devel/Makefile .build-image

ifeq ($(BUILD_DEVEL_IMAGE),yes)
$(DOCKER_TARGETS): .build-image
.shell: .build-image
endif

$(DOCKER_TARGETS): docker-%:
	@echo "Running 'make $(*)' in container image $(BUILDIMAGE)"
	$(DOCKER) run \
		--rm \
		-e GOCACHE=/tmp/.cache/go \
		-e GOMODCACHE=/tmp/.cache/gomod \
		-e GOLANGCI_LINT_CACHE=/tmp/.cache/golangci-lint \
		-v $(PWD):/work \
		-w /work \
		--user $$(id -u):$$(id -g) \
		$(BUILDIMAGE) \
			make $(*)

# Start an interactive shell using the development image.
PHONY: .shell
.shell:
	$(DOCKER) run \
		--rm \
		-ti \
		-e GOCACHE=/tmp/.cache/go \
		-e GOMODCACHE=/tmp/.cache/gomod \
		-e GOLANGCI_LINT_CACHE=/tmp/.cache/golangci-lint \
		-v $(PWD):/work \
		-w /work \
		--user $$(id -u):$$(id -g) \
		$(BUILDIMAGE)
