# Development tasks. Everything runs through the Ruby that is on PATH — the
# library and its test suite have no dependencies beyond the standard library,
# so there is nothing to install first.
#
#   make            list the targets
#   make test       run the suite with minitest
#   make lint       syntax and warning checks, no files touched
#   make build      build the gem into pkg/

RUBY ?= ruby
GEM ?= gem

SOURCES = $(shell find lib test -name '*.rb') cepis.gemspec
TESTS = $(shell find test -name '*_test.rb')
VERSION = $(shell $(RUBY) -Ilib -e 'require "cepis/version"; print Cepis::VERSION')

.DEFAULT_GOAL := help
.PHONY: help test lint format build check clean

help:
	@echo 'Targets:'
	@echo '  test       run the test suite'
	@echo '  lint       ruby -w -c over the tree, plus rubocop when installed'
	@echo '  format     apply rubocop -A, when installed (writes)'
	@echo '  build      build the gem into pkg/'
	@echo '  check      lint + test + build, in that order'
	@echo '  clean      remove build artefacts'

test:
	@set -e; for f in $(TESTS); do $(RUBY) -Ilib -Itest $$f; done

# Read-only by design, so it is safe in CI and in a pre-commit hook. Ruby has
# no formatter or linter in the standard library; rubocop is not a dependency
# of this gem, so it is used only when it happens to be installed.
lint:
	@set -e; for f in $(SOURCES); do $(RUBY) -w -c $$f >/dev/null; done
	@echo 'syntax OK: $(words $(SOURCES)) files'
	$(RUBY) -w -Ilib -e 'require "cepis"'
	@if command -v rubocop >/dev/null 2>&1; then rubocop; else \
		echo 'rubocop not installed: syntax and warning checks only'; fi

format:
	@if command -v rubocop >/dev/null 2>&1; then rubocop -A; else \
		echo 'rubocop not installed: nothing to format with'; fi

build:
	@mkdir -p pkg
	$(GEM) build cepis.gemspec --output pkg/cepis-$(VERSION).gem

# The order matters: lint is the fastest to fail, build the slowest, so a
# broken run reports the cheapest problem first.
check: lint test build

clean:
	rm -rf pkg doc .yardoc