SHELL := /usr/bin/env bash

SUB_DIR = gherkin/cucumber/gherkin

GRAMMAR_GENERATED = \
	include/$(SUB_DIR)/rule_type.hpp \
	include/$(SUB_DIR)/parser.hpp
LANGUAGE_GENERATED = \
	src/lib/$(SUB_DIR)/dialect.cpp
ALL_GENERATED := $(GRAMMAR_GENERATED) $(LANGUAGE_GENERATED)
ALL_SOURCE_FILES = $(shell find include src -name "*.[ch]*")
SOURCE_FILES := $(filter-out $(ALL_GENERATED),$(ALL_SOURCE_FILES))

HERE = $(shell pwd)
CMAKE_BUILDROOT = $(HERE)/build/root
CMAKELISTS = $(shell find src -name CMakeLists.txt)

GHERKIN = stage/bin/gherkin
GHERKIN_GENERATE_TOKENS = stage/bin/gherkin-generate-tokens

GOOD_FEATURE_FILES = $(shell find ../testdata/good -name "*.feature")
BAD_FEATURE_FILES  = $(shell find ../testdata/bad -name "*.feature")

TOKENS       = $(patsubst ../testdata/%,acceptance/testdata/%.tokens,$(GOOD_FEATURE_FILES))
ASTS         = $(patsubst ../testdata/%,acceptance/testdata/%.ast.ndjson,$(GOOD_FEATURE_FILES))
PICKLES      = $(patsubst ../testdata/%,acceptance/testdata/%.pickles.ndjson,$(GOOD_FEATURE_FILES))
SOURCES      = $(patsubst ../testdata/%,acceptance/testdata/%.source.ndjson,$(GOOD_FEATURE_FILES))
ERRORS       = $(patsubst ../testdata/%,acceptance/testdata/%.errors.ndjson,$(BAD_FEATURE_FILES))

.DEFAULT_GOAL = help

# Dummy 1

help: ## Show this help
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make <target>\n\nWhere <target> is one of:\n"} /^[$$()% a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)

generate: $(GRAMMAR_GENERATED) ## Generate gherkin parser files

generate-all: $(ALL_GENERATED)

clean-generate: ## Remove generated Gherkin parser files ## Generate gherkin parser files
	rm -f $(GRAMMAR_GENERATED)

copy-gherkin-languages:
	echo "Nothing to do"

clean-gherkin-languages: ## Remove gherkin-languages.json and any derived files
	echo "Nothing to do"

clean: clean-deps ## Remove all build artifacts and files generated by the acceptance tests
	rm -rf .built .configured
	rm -rf acceptance
	rm -rf build

.DELETE_ON_ERROR:

acceptance: .built $(TOKENS) $(ASTS) $(PICKLES) $(ERRORS) $(SOURCES) ## Build acceptance test dir and compare results with reference

.built: .configured $(SOURCE_FILES)
	./cmake/cmate build
	touch $@

.configured: .deps-installed
	./cmake/cmate configure
	touch $@

define berp-generate-parser =
berp -g ../gherkin.berp -t $< -o $@ --noBOM
endef

include/$(SUB_DIR)/rule_type.hpp: gherkin-cpp-rule-type.razor ../gherkin.berp
	$(berp-generate-parser)

include/$(SUB_DIR)/parser.hpp: gherkin-cpp-parser.razor ../gherkin.berp
	$(berp-generate-parser)

src/lib/$(SUB_DIR)/dialect.cpp: ../gherkin-languages.json dialect.cpp.jq
	jq -f dialect.cpp.jq -r -c < $< > $@

acceptance/testdata/%.tokens: ../testdata/% ../testdata/%.tokens
	mkdir -p $(@D)
	$(GHERKIN_GENERATE_TOKENS) $< > $@
	diff --unified $<.tokens $@

acceptance/testdata/%.ast.ndjson: ../testdata/% ../testdata/%.ast.ndjson
	mkdir -p $(@D)
	$(GHERKIN) --no-source --no-pickles --predictable-ids $< | jq --sort-keys --compact-output "." > $@
	diff --unified <(jq "." $<.ast.ndjson) <(jq "." $@)

acceptance/testdata/%.pickles.ndjson: ../testdata/% ../testdata/%.pickles.ndjson
	mkdir -p $(@D)
	$(GHERKIN) --no-source --no-ast --predictable-ids $< | jq --sort-keys --compact-output "." > $@
	diff --unified <(jq "." $<.pickles.ndjson) <(jq "." $@)

acceptance/testdata/%.source.ndjson: ../testdata/% ../testdata/%.source.ndjson
	mkdir -p $(@D)
	$(GHERKIN) --no-ast --no-pickles --predictable-ids $< | jq --sort-keys --compact-output "." > $@
	diff --unified <(jq "." $<.source.ndjson) <(jq "." $@)

acceptance/testdata/%.errors.ndjson: ../testdata/% ../testdata/%.errors.ndjson
	mkdir -p $(@D)
	$(GHERKIN) --no-source --predictable-ids $< | jq --sort-keys --compact-output "." > $@
	diff --unified <(jq "." $<.errors.ndjson) <(jq "." $@)

#
# External dependencies
#
install-deps: .deps-installed
.PHONY: install-deps

.deps-installed:
	./cmake/cmate install
	touch $@

clean-deps:
	./cmake/cmate clean --purge
.PHONY: clean-deps
