export GO15VENDOREXPERIMENT=1

BENCH_FLAGS ?= -cpuprofile=cpu.pprof -memprofile=mem.pprof -benchmem
PKGS ?= $(shell glide novendor)
# Many Go tools take file globs or directories as arguments instead of packages.
PKG_FILES ?= *.go zapcore benchmarks buffer zapgrpc zaptest zaptest/observer internal/bufferpool internal/exit internal/color internal/ztest

# The linting tools evolve with each Go version, so run them only on the latest
# stable release.
GO_VERSION := $(shell go version | cut -d " " -f 3)
GO_MINOR_VERSION := $(word 2,$(subst ., ,$(GO_VERSION)))
LINTABLE_MINOR_VERSIONS := 12
ifneq ($(filter $(LINTABLE_MINOR_VERSIONS),$(GO_MINOR_VERSION)),)
SHOULD_LINT := true
endif


.PHONY: all
all: lint test

.PHONY: dependencies
dependencies:
	@echo "Installing Glide and locked dependencies..."
	glide --version || go get -u -f github.com/Masterminds/glide
	glide install
	@echo "Installing test dependencies..."
	go install ./vendor/github.com/axw/gocov/gocov
	go install ./vendor/github.com/mattn/goveralls
ifdef SHOULD_LINT
	@echo "Installing golint..."
	go install ./vendor/github.com/golang/lint/golint
else
	@echo "Not installing golint, since we don't expect to lint on" $(GO_VERSION)
endif

# Disable printf-like invocation checking due to testify.assert.Error()
VET_RULES := -printf=false

.PHONY: lint
lint:
ifdef SHOULD_LINT
	@rm -rf lint.log
	@echo "Checking formatting..."
	@gofmt -d -s $(PKG_FILES) 2>&1 | tee lint.log
	@echo "Installing test dependencies for vet..."
	@go test -i $(PKGS)
	@echo "Checking vet..."
	@go vet $(VET_RULES) $(PKGS) 2>&1 | tee -a lint.log
	@echo "Checking lint..."
	@$(foreach dir,$(PKGS),golint $(dir) 2>&1 | tee -a lint.log;)
	@echo "Checking for unresolved FIXMEs..."
	@git grep -i fixme | grep -v -e vendor -e Makefile | tee -a lint.log
	@echo "Checking for license headers..."
	@./check_license.sh | tee -a lint.log
	@[ ! -s lint.log ]
else
	@echo "Skipping linters on" $(GO_VERSION)
endif

.PHONY: test
test:
	go test -race $(PKGS)

.PHONY: cover
cover:
	./scripts/cover.sh $(PKGS)

.PHONY: bench
BENCH ?= .
bench:
	@$(foreach pkg,$(PKGS),go test -bench=$(BENCH) -run="^$$" $(BENCH_FLAGS) $(pkg);)

.PHONY: updatereadme
updatereadme:
	rm -f README.md
	cat .readme.tmpl | go run internal/readme/readme.go > README.md