Makefile

.PHONY: build changes clean coverage-server dependencies
.DEFAULT_GOAL := .last-build

charm_name := $(shell grep -Eo "^name: *[\"']([A-Za-z0-9\-]*)[\"']" metadata.yaml | sed -E 's/^name: *[\"'\'']([A-Za-z0-9\-]*)[\"'\'']/\1/g')

# WARNING: Use the all argument  only while developing the template, not when developing charms
ifndef all
	requirements=""
else
	requirements=*requirements.txt
endif

# PHONY GOALS

build: .last-build

changes:
	@grep --exclude=Makefile \
		  --exclude=.last-* \
		  --exclude=*requirements.txt \
		  --exclude-dir=.git \
		  --exclude-dir=*.egg-info \
		  --exclude-dir=htmlcov \
		  --exclude-dir=.pytest_cache \
		  --exclude-dir=.tox \
		  --exclude-dir=__pycache__ \
		  --color -n -i -r \
		  changeme . || \
		echo "\nLooks like we're good, champ. Good job changing those changemes!\n"

clean:
	@pip uninstall -y -r requirements.txt -r dev-requirements.txt 2>/dev/null || echo -n
	@pip uninstall -y pip-tools 2>/dev/null || echo -n
	@rm -fv .last* *.charm .coverage ${requirements}
	@rm -rfv build/ *.egg-info **/__pycache__ .pytest_cache .tox htmlcov

coverage-server:
	@cd htmlcov && python3 -m http.server 5000

dependencies: .last-dependencies-install .last-pip-tools-install

test: .last-dependencies-install .last-pip-tools-install
	pytest --capture=no -vv

# REAL GOALS

.last-dependencies-install: dev-requirements.txt requirements.txt
	@pip-sync dev-requirements.txt requirements.txt | tee .last-dependencies-install

.last-build: src/* .last-dependencies-install
	@echo "Rebuilding charm '${charm_name}'"
	@(python -m charmcraft build 2>&1 || echo "charmcraft build error") | tee .last-build
	@(grep "charmcraft build error" .last-build 1>/dev/null 2>&1 && rm -f .last-build && exit 1) || exit 0

.last-pip-tools-install:
	@(pip-compile --version 1>/dev/null 2>&1 || pip --disable-pip-version-check install "pip-tools>=5.2.1,<5.3") | tee .last-pip-tools-install

requirements.txt: .last-pip-tools-install setup.py
	@CUSTOM_COMPILE_COMMAND="make dependencies" pip-compile

dev-requirements.txt: .last-pip-tools-install dev-requirements.in requirements.txt
	@CUSTOM_COMPILE_COMMAND="make dependencies" pip-compile  dev-requirements.in