URL = https://acdw.casa/fwends
REPO = https://tildegit.org/casa/pages/raw/branch/main/opml/mug.of.opml
OUTD = /var/www/acdw.casa/fwends/
RC = sfeedrc
FEEDS = feeds
FILES = index.html style.css p*.html
AGGREGATOR = ./fwendplanet.sh
PAGEN = 60 # 2 months

.PHONY: publish
publish: build
	mkdir -p $(OUTD)
	rsync -avz --delete $(FILES) $(OUTD)

.PHONY: build
build: $(RC)
	-rm p*.html
	-sfeed_update $(RC)
	NEXT=p2.html PREV=0 $(AGGREGATOR) $(FEEDS) 1 $(PAGEN) >index.html
	NEXT=p3.html PREV=index.html $(AGGREGATOR) $(FEEDS) 2 $(PAGEN) >pn.html
	N=2; while grep '<details>' pn.html >/dev/null 2>&1; do				\
		mv pn.html p$$N.html;								\
		N=$$((N+1));									\
		NEXT=p$$((N+1)).html PREV=p$$((N-1)).html\
		$(AGGREGATOR) $(FEEDS) $$N $(PAGEN) >pn.html;	\
	done;											\
	rm pn.html;										\
	NEXT=0 PREV=p$$((N-2)).html $(AGGREGATOR) $(FEEDS) $$((N-1)) $(PAGEN) >p$$((N-1)).html

$(RC):
	curl -L $(REPO) | sfeed_opml_import > $@
	echo sfeedpath=$(FEEDS) >> $@