PYTHON ?= python3
SRC_DIR := $(CURDIR)/src
ENTRYPOINT := src/flow/__main__.py
DIST_DIR := dist
BUILD_DIR := build
SPEC_FILE := flow.spec
BINARY := $(DIST_DIR)/flow
INSTALL_DIR ?= $(HOME)/.local/bin

.PHONY: build install-local check-binary clean help

help:
	@printf "Targets:\n"
	@printf "  make build         Build standalone binary at dist/flow\n"
	@printf "  make install-local Install binary to ~/.local/bin/flow\n"
	@printf "  make check-binary  Run dist/flow --help\n"
	@printf "  make clean         Remove build artifacts\n"

build:
	$(PYTHON) -m PyInstaller --noconfirm --clean --onefile --name flow --paths "$(SRC_DIR)" "$(ENTRYPOINT)"

install-local: build
	mkdir -p "$(INSTALL_DIR)"
	install -m 755 "$(BINARY)" "$(INSTALL_DIR)/flow"
	@printf "Installed flow to $(INSTALL_DIR)/flow\n"

check-binary:
	"./$(BINARY)" --help

clean:
	rm -rf "$(BUILD_DIR)" "$(DIST_DIR)" "$(SPEC_FILE)"