.PHONY: all validate
all: css/sprites.css $(patsubst xquery/opml/%.xqy,opml/%.opml,$(wildcard xquery/opml/*.xqy) $(wildcard xquery/opml/*/*.xqy))

XMLLINT_PATH:=$(shell command -v xmllint || true)
ifeq ($(XMLLINT_PATH),)
$(info xmllint is not available, all XSD validations will be skipped)
endif

USER_AGENT:="RSRSSS/1.0 (+https://envs.net/~lucidiot/rsrsss/feed.xml)"
export XIDEL_OPTIONS:=--silent --user-agent=$(USER_AGENT) --wait=1 --trace-stack

opml/%.opml: xquery/opml/%.xqy xquery/functions.xqy
	mkdir -p -ma=x,u=rwx $(dir $@)
	xidel --extract-kind=xquery3 --extract-file="$<" --output-format=xml > $@.new
ifneq ($(XMLLINT_PATH),)
	$(XMLLINT_PATH) --schema xsd/opml.xsd --noout $@.new
endif
	mv $@.new $@
	chmod a=r,u=rw $@

opml/feeds.opml: xquery/opml/feeds.xqy feed.xml
	mkdir -p -ma=x,u=rwx $(dir $@)
	xidel feed.xml --extract-kind=xquery3 --extract-file="$<" --output-format=xml > $@.new
ifneq ($(XMLLINT_PATH),)
	$(XMLLINT_PATH) --schema xsd/opml.xsd --noout $@.new
endif
	mv $@.new $@
	chmod a=r,u=rw $@

img/sprites.png: $(wildcard img/sprites/*.png)
	convert $^ +append $@
	chmod a=r,u=rw $@

css/sprites.css: xquery/build_sprites_css.xqy img/sprites.png
	xidel --extract-kind=xquery3 --extract-file="$<" > $@.new
	mv $@.new $@
	chmod a=r,u=rw $@

validate: xquery/validator.xqy feed.xml
ifneq ($(XMLLINT_PATH),)
	$(XMLLINT_PATH) --schema xsd/rss.xsd --noout feed.xml
endif
	xidel --extract-kind=xquery3 --extract-file="$<"