.PHONY: \
	all \
	check \
	format \
	check-syntax \
	check-format \
	py-check \
	py-check-syntax \
	py-check-format \
	py-format \
	py-format-assignments \
	py-check-annotation-imports \
	py-format-annotation-imports \
	clean \
	clean.py-check

ifndef PY_CHECK_ROOTS
  PY_CHECK_ROOTS             = .
endif

ifndef PY_CHECK_MYPY
  PY_CHECK_MYPY             := mypy
endif

ifndef PY_CHECK_RUFF
  PY_CHECK_RUFF             := $(shell which ruff 2>/dev/null)
  ifneq ($(PY_CHECK_RUFF),)
    PY_CHECK_RUFF           += --config $(TOPDIR)/pyproject.toml
  endif
endif

ifndef PY_CHECK_ISORT
  PY_CHECK_ISORT            := $(firstword $(wildcard /usr/bin/isort))
endif

ifndef PY_CHECK_YAPF
  PY_CHECK_YAPF             := $(firstword $(wildcard /usr/bin/yapf /usr/bin/yapf3))
endif

ifndef PY_CHECK_PYRIGHT
  PY_CHECK_PYRIGHT          := $(shell which pyright 2>/dev/null)
  TD_GENERATE_FILES         += pyrightconfig.json
endif

all:
check: py-check
format: py-format
check-syntax: py-check-syntax
check-format: py-check-format

py-check: py-check-syntax py-check-format py-check-bad-patterns

py-check-syntax:
ifneq ($(PY_CHECK_RUFF),)
	$(PY_CHECK_RUFF) check $(addprefix --exclude ,$(PY_CHECK_EXCLUDE)) $(PY_CHECK_ROOTS)
endif
	$(PY_CHECK_MYPY) $(addprefix --exclude ,$(PY_CHECK_EXCLUDE)) $(PY_CHECK_ROOTS)
ifneq ($(PY_CHECK_PYRIGHT),)
	$(PY_CHECK_PYRIGHT) $(PY_CHECK_ROOTS)
endif

py-check-bad-patterns:
	if find $(PY_CHECK_ROOTS) -type f -name '*.py' -print0 | xargs -0 grep breakpoint; then exit 1; fi
	if find $(PY_CHECK_ROOTS) -type f -name '*.py' -print0 | xargs -0 grep "^\s*).*#\s*export"; then exit 1; fi

py-check-format:
ifneq ($(PY_CHECK_YAPF),)
	$(PY_CHECK_YAPF) --diff --recursive $(PY_CHECK_ROOTS)
endif

py-format:
	find . -type f -name '*.py' -print0 | \
		xargs -0 sed -i -E '1{/^# -\*- coding: utf-8 -\*-$$/{:a;N;/\n[[:space:]]*$$/ba;s/^# -\*- coding: utf-8 -\*-\n([[:space:]]*\n)*/ /;s/^ //}}'
ifneq ($(PY_CHECK_ISORT),)
	$(PY_CHECK_ISORT) $(PY_CHECK_ROOTS)
endif
ifneq ($(PY_CHECK_YAPF),)
	$(PY_CHECK_YAPF) --in-place --recursive $(PY_CHECK_ROOTS)
endif

py-format-assignments:
	find $(PY_CHECK_ROOTS) \
	  -path './.git' -prune -o \
	  -type f -name '*.py' \
	  -execdir /usr/bin/sed -i 's/^\(\s\+[a-zA-Z0-9_]\+\)=\([^,[:space:]]\+\)\([,(]\)*\s*$$/\1 = \2\3/g' {} '+'
	git diff --exit-code

py-check-annotation-imports:
ifneq ($(PY_CHECK_RUFF),)
	$(PY_CHECK_RUFF) check --select TC,FA --diff --unsafe-fixes $(PY_CHECK_ROOTS)
endif

py-format-annotation-imports:
ifneq ($(PY_CHECK_RUFF),)
	$(PY_CHECK_RUFF) check --select TC,FA --fix --unsafe-fixes $(PY_CHECK_ROOTS)
endif

clean: clean.py-check
clean.py-check:
	rm -rf .mypy_cache .ruff_cache .pytest_cache