BINARY := lazy-update-manager
PREFIX ?= $(HOME)/.local

# Versioning: try to use git describe, fall back to 'dev'
VERSION := $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
BUILD_TIME := $(shell date -u +"%Y-%m-%dT%H:%M:%SZ")

.PHONY: build desktop desktop-dist install install-user-service enable-user-service test fmt clean

build:
	@echo "Building $(BINARY) (version: $(VERSION), build time: $(BUILD_TIME))"
	go build -buildvcs=false -ldflags "-X 'lazy-update-manager/internal/version.Version=$(VERSION)' -X 'lazy-update-manager/internal/version.BuildTime=$(BUILD_TIME)'" -o bin/$(BINARY) ./cmd/lazy-update-manager

desktop:
	npm run start

desktop-dist:
	npm run dist

install: build
	@mkdir -p $(PREFIX)/bin
	@mkdir -p $(PREFIX)/share/applications
	@echo "Installing $(BINARY) to $(PREFIX)/bin"
	@if [ -f "$(PREFIX)/bin/$(BINARY)" ]; then \
		if cmp -s bin/$(BINARY) "$(PREFIX)/bin/$(BINARY)"; then \
			echo "Existing binary is identical; skipping overwrite."; \
			exit 0; \
		else \
			ts=$$(date +%Y%m%d%H%M%S); \
			mv "$(PREFIX)/bin/$(BINARY)" "$(PREFIX)/bin/$(BINARY)-$$ts.bak"; \
			echo "Backed up previous binary to $(PREFIX)/bin/$(BINARY)-$$ts.bak"; \
		fi; \
	fi; \
	install -Dm755 bin/$(BINARY) $(PREFIX)/bin/$(BINARY); \
	install -Dm644 systemd/lazy-update-manager.desktop $(PREFIX)/share/applications/lazy-update-manager.desktop; \
	echo "Installed $(BINARY) to $(PREFIX)/bin"

install-user-service: install
	install -Dm644 systemd/lazy-update-manager.service $(HOME)/.config/systemd/user/lazy-update-manager.service
	install -Dm644 systemd/lazy-update-manager.timer $(HOME)/.config/systemd/user/lazy-update-manager.timer
	systemctl --user daemon-reload

enable-user-service: install-user-service
	systemctl --user enable --now lazy-update-manager.timer

test:
	go test ./...

fmt:
	gofmt -w ./cmd ./internal

clean:
	rm -rf bin