.PHONY: clean clean-test clean-pyc clean-build docs help
.DEFAULT_GOAL := help
VERSION?=''

define PRINT_HELP_PYSCRIPT
import re, sys

for line in sys.stdin:
	match = re.match(r'^([a-zA-Z_-]+):.*?## (.*)$$', line)
	if match:
		target, help = match.groups()
		print("%-20s %s" % (target, help))
endef
export PRINT_HELP_PYSCRIPT

help:
	@python3 -c "$$PRINT_HELP_PYSCRIPT" < $(MAKEFILE_LIST)

clean: clean-build clean-pyc

clean-build: ## remove build artifacts
	rm -fr build/
	rm -fr dist/
	rm -fr .eggs/
	find . -name '*.egg-info' -exec rm -fr {} +
	find . -name '*.egg' -exec rm -f {} +

clean-pyc: ## remove Python file artifacts
	find . -name '*.pyc' -exec rm -f {} +
	find . -name '*.pyo' -exec rm -f {} +
	find . -name '*~' -exec rm -f {} +
	find . -name '__pycache__' -exec rm -fr {} +

docs: ## generate Sphinx HTML documentation, including API docs
	rm -fr docs/_build/*
	$(MAKE) -C docs html

pypi-release: dist ## package and upload a release
	twine upload dist/*

dist: clean ## builds source and wheel package
	if [ $(VERSION) != '' ]; then \
	sed -i "s/^release_version = .*/release_version = '$(VERSION)'/g" setup.py; \
	fi
	python3 setup.py sdist
	python3 setup.py bdist_wheel
	ls -l dist

install: clean ## install the package to the active Python's site-packages
	python3 setup.py install

