SPEC_DIR = ./specs
SCRIPT_DIR = ./scripts
TEST_LIBS_DIR = ./test_libs
PY_SPEC_DIR = $(TEST_LIBS_DIR)/pyspec
YAML_TEST_DIR = ./eth2.0-spec-tests/tests
GENERATOR_DIR = ./test_generators
CONFIGS_DIR = ./configs

# Collect a list of generator names
GENERATORS = $(sort $(dir $(wildcard $(GENERATOR_DIR)/*/)))
# Map this list of generator paths to a list of test output paths
YAML_TEST_TARGETS = $(patsubst $(GENERATOR_DIR)/%, $(YAML_TEST_DIR)/%, $(GENERATORS))
GENERATOR_VENVS = $(patsubst $(GENERATOR_DIR)/%, $(GENERATOR_DIR)/%venv, $(GENERATORS))

PY_SPEC_PHASE_0_TARGETS = $(PY_SPEC_DIR)/eth2spec/phase0/spec.py
PY_SPEC_ALL_TARGETS = $(PY_SPEC_PHASE_0_TARGETS)


.PHONY: clean all test citest gen_yaml_tests pyspec phase0 install_test

all: $(PY_SPEC_ALL_TARGETS) $(YAML_TEST_DIR) $(YAML_TEST_TARGETS)

clean:
	rm -rf $(YAML_TEST_DIR)
	rm -rf $(GENERATOR_VENVS)
	rm -rf $(PY_SPEC_DIR)/venv $(PY_SPEC_DIR)/.pytest_cache
	rm -rf $(PY_SPEC_ALL_TARGETS)

# "make gen_yaml_tests" to run generators
gen_yaml_tests: $(PY_SPEC_ALL_TARGETS) $(YAML_TEST_TARGETS)

# installs the packages to run pyspec tests
install_test:
	cd $(PY_SPEC_DIR); python3 -m venv venv; . venv/bin/activate; pip3 install -r requirements-testing.txt;

test: $(PY_SPEC_ALL_TARGETS)
	cd $(PY_SPEC_DIR); . venv/bin/activate; python -m pytest eth2spec

citest: $(PY_SPEC_ALL_TARGETS)
	cd $(PY_SPEC_DIR); mkdir -p test-reports/eth2spec; . venv/bin/activate; python -m pytest --junitxml=test-reports/eth2spec/test_results.xml .

install_lint:
	cd $(PY_SPEC_DIR); python3 -m venv venv; . venv/bin/activate; pip3 install flake8==3.5.0

lint: $(PY_SPEC_ALL_TARGETS)
	cd $(PY_SPEC_DIR); . venv/bin/activate; \
	flake8 --max-line-length=120 ./eth2spec;

# "make pyspec" to create the pyspec for all phases.
pyspec: $(PY_SPEC_ALL_TARGETS)

# "make phase0" to create pyspec for phase0
phase0: $(PY_SPEC_PHASE_0_TARGETS)


$(PY_SPEC_DIR)/eth2spec/phase0/spec.py:
	python3 $(SCRIPT_DIR)/phase0/build_spec.py  $(SPEC_DIR)/core/0_beacon-chain.md $@


CURRENT_DIR = ${CURDIR}

# The function that builds a set of suite files, by calling a generator for the given type (param 1)
define build_yaml_tests
	# Started!
	# Create output directory
	# Navigate to the generator
	# Create a virtual environment, if it does not exist already
	# Activate the venv, this is where dependencies are installed for the generator
	# Install all the necessary requirements
	# Run the generator. The generator is assumed to have an "main.py" file.
	# We output to the tests dir (generator program should accept a "-o <filepath>" argument.
	echo "generator $(1) started"; \
	mkdir -p $(YAML_TEST_DIR)$(1); \
	cd $(GENERATOR_DIR)$(1); \
	if ! test -d venv; then python3 -m venv venv; fi; \
	. venv/bin/activate; \
	pip3 install -r requirements.txt; \
	python3 main.py -o $(CURRENT_DIR)/$(YAML_TEST_DIR)$(1) -c $(CURRENT_DIR)/$(CONFIGS_DIR); \
	echo "generator $(1) finished"
endef

# The tests dir itself is simply build by creating the directory (recursively creating deeper directories if necessary)
$(YAML_TEST_DIR):
	$(info creating directory, to output yaml targets to: ${YAML_TEST_TARGETS})
	mkdir -p $@
$(YAML_TEST_DIR)/:
	$(info ignoring duplicate yaml tests dir)

# For any target within the tests dir, build it using the build_yaml_tests function.
# (creation of output dir is a dependency)
$(YAML_TEST_DIR)%: $(PY_SPEC_ALL_TARGETS) $(YAML_TEST_DIR)
	$(call build_yaml_tests,$*)