tools.bindir = tools/bin
tools.srcdir = tools/src

ifeq ($(origin GOOS), undefined)
	GOOS := $(shell go env GOOS)
endif
ifeq ($(origin GOARCH), undefined)
	GOARCH := $(shell go env GOARCH)
endif


# `go get`-able things
# ====================
#
tools/controller-gen = $(tools.bindir)/controller-gen
tools/golangci-lint  = $(tools.bindir)/golangci-lint
tools/kustomize      = $(tools.bindir)/kustomize
tools/kind           = $(tools.bindir)/kind
tools/setup-envtest  = $(tools.bindir)/setup-envtest
$(tools.bindir)/%: $(tools.srcdir)/%/pin.go $(tools.srcdir)/%/go.mod
	cd $(<D) && GOOS= GOARCH= go build -o $(abspath $@) $$(sed -En 's,^import "(.*)".*,\1,p' pin.go)

# `pip install`-able things
# =========================
#
tools/codespell    = $(tools.bindir)/codespell
tools/yamllint     = $(tools.bindir)/yamllint
$(tools.bindir)/%.d/venv: $(tools.srcdir)/%/requirements.txt
	mkdir -p $(@D)
	python3 -m venv $@
	$@/bin/pip3 install -r $< || (rm -rf $@; exit 1)
$(tools.bindir)/%: $(tools.bindir)/%.d/venv
	ln -sf $*.d/venv/bin/$* $@

ifneq ($(GOOS),windows)
# Shellcheck
# ==========
#
tools/shellcheck = $(tools.bindir)/shellcheck
SHELLCHECK_VERSION=0.8.0
SHELLCHECK_ARCH=$(shell uname -m)
# shellcheck uses the same binary on Intel and Apple Silicon Mac.
ifeq ($(GOOS),darwin)
SHELLCHECK_ARCH=x86_64
endif
SHELLCHECK_TXZ = https://github.com/koalaman/shellcheck/releases/download/v$(SHELLCHECK_VERSION)/shellcheck-v$(SHELLCHECK_VERSION).$(GOOS).$(SHELLCHECK_ARCH).tar.xz
tools/bin/$(notdir $(SHELLCHECK_TXZ)):
	mkdir -p $(@D)
	curl -sfL $(SHELLCHECK_TXZ) -o $@
%/bin/shellcheck: %/bin/$(notdir $(SHELLCHECK_TXZ))
	mkdir -p $(@D)
	tar -C $(@D) -Jxmf $< --strip-components=1 shellcheck-v$(SHELLCHECK_VERSION)/shellcheck
endif