NAME := gdu
MAJOR_VER := v5
PACKAGE := github.com/dundee/$(NAME)/$(MAJOR_VER)
CMD_GDU := cmd/gdu
VERSION := $(shell git describe --tags 2>/dev/null)
NAMEVER := $(NAME)-$(subst v,,$(VERSION))
DATE := $(shell date +'%Y-%m-%d')
GOFLAGS ?= -buildmode=pie -trimpath -mod=readonly -modcacherw -pgo=default.pgo
GOFLAGS_STATIC ?= -trimpath -mod=readonly -modcacherw -pgo=default.pgo
LDFLAGS := -s -w -extldflags '-static' \
	-X '$(PACKAGE)/build.Version=$(VERSION)' \
	-X '$(PACKAGE)/build.User=$(shell id -u -n)' \
	-X '$(PACKAGE)/build.Time=$(shell LC_ALL=en_US.UTF-8 date)'
TAR := tar
ifeq ($(shell uname -s),Darwin)
	TAR := gtar # brew install gnu-tar
endif

all: clean tarball build-all build-docker man clean-uncompressed-dist shasums

run:
	go run $(PACKAGE)/$(CMD_GDU)

vendor: go.mod go.sum
	go mod vendor

tarball: vendor
	-mkdir dist
	$(TAR) czf dist/$(NAMEVER).tgz --transform "s,^,$(NAMEVER)/," --exclude dist --exclude test_dir --exclude coverage.txt *

build:
	@echo "Version: " $(VERSION)
	mkdir -p dist
	GOFLAGS="$(GOFLAGS)" CGO_ENABLED=0 go build -ldflags="$(LDFLAGS)" -o dist/$(NAME) $(PACKAGE)/$(CMD_GDU)

build-static:
	@echo "Version: " $(VERSION)
	mkdir -p dist
	GOFLAGS="$(GOFLAGS_STATIC)" CGO_ENABLED=0 go build -ldflags="$(LDFLAGS)" -o dist/$(NAME) $(PACKAGE)/$(CMD_GDU)

build-docker:
	@echo "Version: " $(VERSION)
	docker build . --tag ghcr.io/dundee/gdu:$(VERSION)

build-all:
	@echo "Version: " $(VERSION)
	-mkdir dist
	-CGO_ENABLED=0 gox \
		-os="darwin" \
		-arch="amd64 arm64" \
		-output="dist/gdu_{{.OS}}_{{.Arch}}" \
		-ldflags="$(LDFLAGS)" \
		$(PACKAGE)/$(CMD_GDU)

	-CGO_ENABLED=0 gox \
		-os="windows" \
		-arch="amd64" \
		-output="dist/gdu_{{.OS}}_{{.Arch}}" \
		-ldflags="$(LDFLAGS)" \
		$(PACKAGE)/$(CMD_GDU)

	-CGO_ENABLED=0 gox \
		-os="linux freebsd netbsd openbsd" \
		-output="dist/gdu_{{.OS}}_{{.Arch}}" \
		-ldflags="$(LDFLAGS)" \
		$(PACKAGE)/$(CMD_GDU)

	GOFLAGS="$(GOFLAGS)" CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o dist/gdu_linux_amd64-x $(PACKAGE)/$(CMD_GDU)
	GOFLAGS="$(GOFLAGS_STATIC)" CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o dist/gdu_linux_amd64_static $(PACKAGE)/$(CMD_GDU)

	CGO_ENABLED=0 GOOS=linux GOARM=5 GOARCH=arm go build -ldflags="$(LDFLAGS)" -o dist/gdu_linux_armv5l $(PACKAGE)/$(CMD_GDU)
	CGO_ENABLED=0 GOOS=linux GOARM=6 GOARCH=arm go build -ldflags="$(LDFLAGS)" -o dist/gdu_linux_armv6l $(PACKAGE)/$(CMD_GDU)
	CGO_ENABLED=0 GOOS=linux GOARM=7 GOARCH=arm go build -ldflags="$(LDFLAGS)" -o dist/gdu_linux_armv7l $(PACKAGE)/$(CMD_GDU)
	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="$(LDFLAGS)" -o dist/gdu_linux_arm64 $(PACKAGE)/$(CMD_GDU)
	CGO_ENABLED=0 GOOS=android GOARCH=arm64 go build -ldflags="$(LDFLAGS)" -o dist/gdu_android_arm64 $(PACKAGE)/$(CMD_GDU)

	cd dist; for file in gdu_linux_* gdu_darwin_* gdu_netbsd_* gdu_openbsd_* gdu_freebsd_* gdu_android_*; do tar czf $$file.tgz $$file; done
	cd dist; for file in gdu_windows_*; do zip $$file.zip $$file; done

gdu.1: gdu.1.md
	sed 's/{{date}}/$(DATE)/g' gdu.1.md > gdu.1.date.md
	pandoc gdu.1.date.md -s -t man > gdu.1
	rm -f gdu.1.date.md

man: gdu.1
	cp gdu.1 dist
	cd dist; tar czf gdu.1.tgz gdu.1

show-man:
	sed 's/{{date}}/$(DATE)/g' gdu.1.md > gdu.1.date.md
	pandoc gdu.1.date.md -s -t man | man -l -

test:
	gotestsum

coverage:
	gotestsum -- -race -coverprofile=coverage.txt -covermode=atomic ./...

coverage-html: coverage
	go tool cover -html=coverage.txt

gobench:
	go test -bench=. $(PACKAGE)/pkg/analyze

heap-profile:
	go tool pprof -web http://localhost:6060/debug/pprof/heap

pgo:
	wget -O cpu.pprof http://localhost:6060/debug/pprof/profile?seconds=30
	go tool pprof -proto cpu.pprof default.pgo > merged.pprof
	mv merged.pprof default.pgo

trace:
	wget -O trace.out http://localhost:6060/debug/pprof/trace?seconds=30
	gotraceui ./trace.out

benchmark:
	sudo cpupower frequency-set -g performance
	hyperfine --export-markdown=bench-cold.md \
		--prepare 'sync; echo 3 | sudo tee /proc/sys/vm/drop_caches' \
		--ignore-failure \
		'dua ~' 'duc index ~' 'ncdu -0 -o /dev/null ~' \
		'diskus ~' 'du -hs ~' 'dust -d0 ~' 'pdu ~' \
		'gdu -npc ~' 'gdu -gnpc ~' 'gdu -npc --use-storage ~'
	hyperfine --export-markdown=bench-warm.md \
		--warmup 5 \
		--ignore-failure \
		'dua ~' 'duc index ~' 'ncdu -0 -o /dev/null ~' \
		'diskus ~' 'du -hs ~' 'dust -d0 ~' 'pdu ~' \
		'gdu -npc ~' 'gdu -gnpc ~' 'gdu -npc --use-storage ~'
	sudo cpupower frequency-set -g schedutil

lint:
	golangci-lint run -c .golangci.yml

clean:
	go mod tidy
	-rm coverage.txt
	-rm -r test_dir
	-rm -r vendor
	-rm -r dist

clean-uncompressed-dist:
	find dist -type f -not -name '*.tgz' -not -name '*.zip' -delete

shasums:
	cd dist; sha256sum * > sha256sums.txt
	cd dist; gpg --sign --armor --detach-sign sha256sums.txt

release:
	gh release create -t "gdu $(VERSION)" $(VERSION) ./dist/*

install-dev-dependencies:
	go install gotest.tools/gotestsum@latest
	go install github.com/mitchellh/gox@latest
	go install honnef.co/go/gotraceui/cmd/gotraceui@master
	go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest

.PHONY: run build build-static build-all test gobench benchmark coverage coverage-html clean clean-uncompressed-dist man show-man release