#!/usr/bin/make -f

JSTEST ?= node_modules/.bin/jstest
JSHINT ?= node_modules/.bin/jshint
UGLIFY ?= node_modules/.bin/uglifyjs
SOURCES = string-lerp.js
UGLIFIED = $(SOURCES:.js=.min.js)

TESTS = $(wildcard tests/*.js);
LINT_TARGETS = $(addprefix build/stamp/,$(addsuffix .lint,$(SOURCES)))
TEST_TARGETS = $(addprefix build/stamp/,$(addsuffix .test,$(SOURCES)))

.PHONY: all check lint test min clean distclean

all:
	@echo "Interesting targets:"
	@echo "    lint - validate source (with jshint)"
	@echo "    test - run tests (with jstest)"
	@echo "    ugly - generate minified/mangled source files"
	@echo
	@echo "(Running these will download packages from NPM.)"
	@echo

%.min.js: %.js $(UGLIFY)
	$(UGLIFY) --comments -m < $< > $@

build:
	mkdir -p build/stamp build/dist

build/stamp/%.lint: % build
	@mkdir -p $(@D)
	$(JSHINT) $<
	@touch $@

build/stamp/%.test: tests/% % build
	@mkdir -p $(@D)
	@echo $(JSTEST) $<
	@$(JSTEST) $< > $@ || (cat $@ && rm -f $@ && exit 1)
	@touch $@

ugly: $(UGLIFIED)

check: lint test

lint: $(JSHINT) $(LINT_TARGETS)

test: $(JSTEST) $(TEST_TARGETS)

clean:
	rm -rf build
	rm -f $(UGLIFIED)

distclean: clean
	rm -rf node_modules

$(JSTEST):
	npm install jstest

$(JSHINT):
	npm install jshint

$(UGLIFY):
	npm install uglify-js