PY_VERSION := $(wordlist 2,4,$(subst ., ,$(shell python --version 2>&1)))
PY_MAJOR := $(word 1,${PY_VERSION})
PY_MINOR := $(word 2,${PY_VERSION})
PY_GTE_35 = $(shell echo $(PY_MAJOR).$(PY_MINOR)\>=3.5 | bc)


.PHONY: all flake8 clean test check

all:
	@echo 'flake8            check flake8 compliance'
	@echo 'clean             cleanup the source tree'
	@echo 'test              run the unit tests'
	@echo 'check             make sure you are ready to commit'

flake8:
	@flake8 --ignore=E741,W503,W504 backoff tests

mypy:	
	@mypy --show-error-codes backoff tests

clean:
	@find . -name "*.pyc" -delete
	@find . -name "__pycache__" -delete
	@rm -rf build dist .coverage MANIFEST

test: clean
	@PYTHONPATH=. py.test --cov-report term-missing --cov backoff tests

check: flake8 mypy test
	@coverage report | grep ^TOTAL | grep 100% >/dev/null || \
	{ echo 'Unit tests coverage is incomplete.'; exit 1; }