CGO_ENABLED = 0
DIR          = ./build

GO_ARCH_AMD	 = amd64
GO_ARCH_ARM  = arm64

GO_OS_WIN    = windows
GO_OS_DARWIN = darwin
GO_OS_LINUX	 = linux

EXECUTABLE   = expiration-check

BIN_WIN_AMD64    = $(DIR)/$(EXECUTABLE)-windows-$(GO_ARCH_AMD).exe
BIN_WIN_ARM64    = $(DIR)/$(EXECUTABLE)-windows-$(GO_ARCH_ARM).exe
BIN_DARWIN_AMD64 = $(DIR)/$(EXECUTABLE)-darwin-$(GO_ARCH_AMD)
BIN_DARWIN_ARM64 = $(DIR)/$(EXECUTABLE)-darwin-$(GO_ARCH_ARM)
BIN_LINUX_AMD64  = $(DIR)/$(EXECUTABLE)-linux-$(GO_ARCH_AMD)
BIN_LINUX_ARM64  = $(DIR)/$(EXECUTABLE)-linux-$(GO_ARCH_ARM)
MAN_OUTPUT       = $(DIR)/expiration-check.1

CC       = go build
CFLAGS   = -trimpath
LDFLAGS  = all=-w -s
GCFLAGS  = all=
ASMFLAGS = all=

.PHONY: all
all: linux windows darwin man

.PHONY: linux
linux: $(BIN_LINUX_AMD64) $(BIN_LINUX_ARM64)
	chmod +x $(BIN_LINUX_ARM64)
	chmod +x $(BIN_LINUX_AMD64)

.PHONY: darwin
darwin: $(BIN_DARWIN_AMD64) $(BIN_DARWIN_ARM64)
	chmod +x $(BIN_DARWIN_AMD64)
	chmod +x $(BIN_DARWIN_ARM64)

.PHONY: windows
windows: $(BIN_WIN_AMD64) $(BIN_WIN_ARM64)

.PHONY: man
man: $(BIN_LINUX_AMD64) $(MAN_OUTPUT)

.PHONY: $(BIN_LINUX_AMD64)
$(BIN_LINUX_AMD64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_AMD) \
	GOOS=$(GO_OS_LINUX) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_LINUX_AMD64) cmd/main.go

.PHONY: $(BIN_LINUX_ARM64)
$(BIN_LINUX_ARM64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_ARM) \
	GOOS=$(GO_OS_LINUX) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_LINUX_ARM64) cmd/main.go

.PHONY: $(BIN_WIN_AMD64)
$(BIN_WIN_AMD64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_AMD) \
	GOOS=$(GO_OS_WIN) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_WIN_AMD64) cmd/main.go

.PHONY: $(BIN_WIN_ARM64)
$(BIN_WIN_ARM64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_ARM) \
	GOOS=$(GO_OS_WIN) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_WIN_ARM64) cmd/main.go

.PHONY: $(BIN_DARWIN_AMD64)
$(BIN_DARWIN_AMD64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_AMD) \
	GOOS=$(GO_OS_DARWIN) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_DARWIN_AMD64) cmd/main.go

.PHONY: $(BIN_DARWIN_ARM64)
$(BIN_DARWIN_ARM64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_ARM) \
	GOOS=$(GO_OS_DARWIN) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_DARWIN_ARM64) cmd/main.go

.PHONY: $(MAN_OUTPUT)
$(MAN_OUTPUT):
	./bin/create-manpage.sh

.PHONY: clean
clean:
	rm -rf $(DIR)/*

tool-gofumpt:
	which golangci-lint > /dev/null 2>&1 || go install mvdan.cc/gofumpt@latest

fmt: tool-gofumpt
	gofumpt -w --extra .