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

.PHONY: vet
vet: ## Run go vet against code.
	go mod tidy && go mod vendor
	go vet ./...

.PHONY: test
test: vet ## Run tests
	go test -v -coverpkg=./... ./pkg/...

##@ Linter

.PHONY: install-golint
install-golint:
	@if ! command -v golangci-lint &> /dev/null; then \
  		echo "installing golangci-lint..."; \
  		go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest; \
  	else \
  	    echo "golangci-lint already installed"; \
	fi

.PHONY: golint
golint: fmt install-golint
	"$$(go env GOPATH)/bin/golangci-lint" run -v ./...

VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || git rev-parse --short HEAD 2>/dev/null || echo "dev")
GIT_COMMIT ?= $(shell git rev-parse HEAD 2>/dev/null || echo "unknown")
BUILD_TIME ?= $(shell if [ -n "$$SOURCE_DATE_EPOCH" ]; then date -u -d "@$$SOURCE_DATE_EPOCH" +"%Y-%m-%dT%H:%M:%SZ" 2>/dev/null || date -u -r "$$SOURCE_DATE_EPOCH" +"%Y-%m-%dT%H:%M:%SZ" 2>/dev/null; else date -u +"%Y-%m-%dT%H:%M:%SZ"; fi)
PROJECT_GOFLAGS := -trimpath -buildvcs=false
PROJECT_LDFLAGS := -buildid= -B none -X 'github.com/alibaba/opensandbox/internal/version.Version=$(VERSION)' \
	-X 'github.com/alibaba/opensandbox/internal/version.BuildTime=$(BUILD_TIME)' \
	-X 'github.com/alibaba/opensandbox/internal/version.GitCommit=$(GIT_COMMIT)'
GO_BUILD_FLAGS := $(strip $(GOFLAGS) $(PROJECT_GOFLAGS))
GO_LDFLAGS := $(strip $(LDFLAGS) $(PROJECT_LDFLAGS))

.PHONY: build
build: vet ## Build the binary.
	@mkdir -p bin
	go build $(GO_BUILD_FLAGS) -ldflags "$(GO_LDFLAGS)" -o bin/execd main.go

.PHONY: test-integration
test-integration: ## Run integration tests (Linux + bwrap required).
	go test -v -tags="linux,bwrap" -run Integration ./pkg/runtime/bwrap_test/

.PHONY: multi-build
multi-build: vet ## Cross-compile for linux/windows/darwin amd64/arm64.
	@mkdir -p bin
	@for os in linux windows darwin; do \
		for arch in amd64 arm64; do \
			out=bin/execd_$(VERSION)_$${os}_$${arch}; \
			[ "$${os}" = "windows" ] && out="$${out}.exe"; \
			echo ">> building $${os}/$${arch} -> $${out}"; \
			GOOS=$${os} GOARCH=$${arch} CGO_ENABLED=0 go build $(GO_BUILD_FLAGS) -ldflags "$(GO_LDFLAGS)" -o "$${out}" main.go || exit $$?; \
		done; \
	done