.PHONY: build ui ui-build run docker docker-build test test-race test-both fmt clean help

APP_NAME := helix-proxy
GO := go
UI_DIR := ui
DIST_DIR := $(UI_DIR)/dist
DATA_DIR := data

# Inject git tag and commit separately; version package picks tag → commit → dev.
GIT_TAG := $(shell git describe --tags --exact-match HEAD 2>/dev/null)
GIT_COMMIT := $(shell git rev-parse --short HEAD 2>/dev/null)
LDFLAGS := -X helix-proxy/internal/version.Version=$(GIT_TAG) -X helix-proxy/internal/version.Commit=$(GIT_COMMIT)

# Default target
help:
	@echo "Helix Proxy Makefile"
	@echo ""
	@echo "  build        Build the Go binary (embeds UI if dist/ present)"
	@echo "  ui           Install UI deps (npm ci in ui/)"
	@echo "  ui-build     Build Svelte SPA to $(DIST_DIR)"
	@echo "  run          Build + run (uses current dir as cwd)"
	@echo "  docker       Build docker image (helix-proxy:dev)"
	@echo "  docker-build Build docker image"
	@echo "  test         Run go tests"
	@echo "  test-race    Run go tests with race detector"
	@echo "  test-both    Run go tests and race detector"
	@echo "  fmt          Format Go sources (gofmt)"
	@echo "  clean        Remove build artifacts and ui/dist"
	@echo ""

build: ui-build
	@echo "Building $(APP_NAME) (tag=$(if $(GIT_TAG),$(GIT_TAG),none), commit=$(if $(GIT_COMMIT),$(GIT_COMMIT),none))..."
	$(GO) build -ldflags "$(LDFLAGS)" -o $(APP_NAME) ./cmd/helix-proxy

ui:
	@echo "Installing UI dependencies..."
	cd $(UI_DIR) && npm ci

ui-build: clean
	@if [ -d "$(UI_DIR)" ]; then \
		echo "Building Svelte UI..."; \
		cd $(UI_DIR) && npm run build; \
	else \
		echo "No $(UI_DIR)/ dir, skipping UI build (will use empty embed or stub)"; \
	fi

run: build
	@echo "Running $(APP_NAME) from cwd (data/ will be created relative)..."
	PROXY_MODE=development ./$(APP_NAME)

docker docker-build:
	@echo "Building docker image helix-proxy:dev..."
	docker build -t helix-proxy:dev .

test:
	$(GO) test ./... -count=1

test-race:
	$(GO) test ./... -count=1 -race

test-both: test test-race

fmt:
	@echo "Formatting Go sources..."
	@files="$$(gofmt -l .)"; \
	if [ -n "$$files" ]; then \
		count=$$(echo "$$files" | wc -l); \
		echo "Reformatted $$count file(s):"; \
		echo "$$files" | sed 's/^/  /'; \
		echo "$$files" | xargs gofmt -w; \
	else \
		echo "All Go files already formatted."; \
	fi

clean:
	rm -f $(APP_NAME)
	rm -rf $(DIST_DIR)
	rm -rf $(DATA_DIR)
	@echo "Cleaned binaries and UI dist."