#!/usr/bin/make -f

# generate documentation unless nodoc requested
ifeq (,$(filter nodoc,$(DEB_BUILD_OPTIONS)))
DOCS = README.html README.txt SPECS.html SPECS.txt
endif

COPYRIGHT = 2018, Andrea Giammarchi

# GNU LibreJS 5.0 compatible license string
# * See <https://www.gnu.org/software/librejs/free-your-javascript.html>
LICENSE = magnet:?xt=urn:btih:b8999bbaf509c08d127678643c515b9ab0836bae&dn=ISC.txt ISC

override_dh_auto_build: $(DOCS) \
 cjs/index.js esm/index.js debian/js/flatted.js debian/js/flatted.min.js.gz

cjs/index.js: index.js
	mkdir --parents $(dir $@)
	cp $< $@
	echo 'module.exports = Flatted;' >> $@

esm/index.js: index.js
	mkdir --parents $(dir $@)
	cp $< $@
	echo 'export default Flatted;' >> $@
	echo 'export var parse = Flatted.parse;' >> $@
	echo 'export var stringify = Flatted.stringify;' >> $@

debian/js/flatted.min.js: index.js
debian/js/flatted.js: index.js
	mkdir --parents $(dir $@)
	echo '// @license $(LICENSE)' >> $@
	cat $< >> $@
	echo '// @license-end' >> $@

override_dh_auto_test:
	istanbul cover test/index.js

override_dh_installdocs:
	dh_installdocs --all -- $(DOCS)

override_dh_clean:
	dh_clean -- $(DOCS)

# optimize JavaScript for browser use
# * include source-map
debian/js/%.min.js:
	$(if $<,,$(error source missing for browser library of $*))
	mkdir --parents $(dir $@)
	$(strip uglifyjs --compress --mangle \
		--source-map "base='$(abspath $(dir $@))',url='$(notdir $@).map'" \
		--output $@ \
		-- $<)
	mv -f $@ $@~
	$(if $(COPYRIGHT),echo '// @copyright $(COPYRIGHT)' >> $@)
	$(if $(LICENSE),echo '// @license $(LICENSE)' >> $@)
	cat $@~ >> $@
	$(if $(LICENSE),echo '// @license-end' >> $@)
	rm -f $@~

# pre-compress for browser use
%.gz: %
	pigz --force --keep -11 -- $<
	brotli --force --keep --best -- $<

%.html: %.md
	pandoc --from gfm-raw_html --to html --standalone --output $@ $<

%.txt: %.md
	pandoc --from gfm-raw_html --to plain --output $@ $<

%:
	dh $@

.SECONDARY: