PATH := $(PATH):/usr/local/bin

.PHONY: all
all: enwiktionary-latest.version
all: enwiktionary-latest.index
all: enwiki-latest.version
all: enwiki-latest.index
all: phraser-words500K-latest.index
all: phraser-phrases5M-latest.index

.PHONY: newest
newest:
	rm -f *.version && make

.PHONY: reindex
reindex:
	rm -f *.index && make

.PHONY: sync
sync: newest
	rsync -av *.index tilde:public_html/pzzl.org/nut/

.PHONY: trim
trim:
	ls enwiki-*-snap.index | sort | head -n -2 | xargs -t rm
	ls enwiktionary-*-snap.index | sort | head -n -2 | xargs -t rm
	ls enwiki-*-pages-articles.xml.bz2 | sort | head -n -2 | xargs -t rm
	ls enwiktionary-*-pages-articles.xml.bz2 | sort | head -n -2 | xargs -t rm
	ls phraser-words500K-*-snap.index | sort | head -n -2 | xargs -t rm
	ls phraser-phrases5M-*-snap.index | sort | head -n -2 | xargs -t rm
	ls phraser-*.txt | sort | head -n -2 | xargs -t rm

%/.git:
	git submodule update --init $*

nutrimatic/bin: nutrimatic/.git
	cd nutrimatic && ./build.py

en%-latest.version:
	wget -O - https://dumps.wikimedia.org/en$*/latest/en$*-latest-pages-articles.xml.bz2-rss.xml |\
		xpath -e '//rss/channel/link/text()' |\
		sed 's/^.*\///' > $@

enwiki-%-pages-articles.xml.bz2:
	wget -O $@ https://dumps.wikimedia.org/enwiki/$*/enwiki-$*-pages-articles.xml.bz2

enwiki-%-snap.merge: nutrimatic/bin enwiki-%-pages-articles.xml.bz2
	# ~1h
	wikiextractor -q -o- enwiki-$*-pages-articles.xml.bz2 |\
		./merge.sh $@

enwiktionary-%-pages-articles.xml.bz2:
	wget -O $@ https://dumps.wikimedia.org/enwiktionary/$*/enwiktionary-$*-pages-articles.xml.bz2

enwiktionary-%-snap.merge: nutrimatic/bin enwiktionary-%-pages-articles.xml.bz2
	wikiextractor -q -o- enwiktionary-$*-pages-articles.xml.bz2 |\
		./merge.sh $@

en%-snap.index: en%-snap.merge nutrimatic/bin
	nutrimatic/bin/merge-indexes 5 en$*-snap.merge $@

%-latest.index: %-latest.version
	make $*-$(shell cat $*-latest.version)-snap.index
	ln -sf $*-$(shell cat $*-latest.version)-snap.index $@

phraser-words500K-latest.version:
	date -d \
		"$$(curl -I https://lahosken.san-francisco.ca.us/frivolity/prog/phraser/words_500K.txt |\
			awk -F': ' '/^last-modified: / { print $$2 }')" \
		+"%Y%m%d%H%M%S" > $@

phraser-phrases5M-latest.version:
	date -d \
		"$$(curl -I https://lahosken.san-francisco.ca.us/frivolity/prog/phraser/phrases_5M.txt |\
			awk -F': ' '/^last-modified: / { print $$2 }')" \
		+"%Y%m%d%H%M%S" > $@

phraser-words500K-%.txt:
	wget -O $@ https://lahosken.san-francisco.ca.us/frivolity/prog/phraser/words_500K.txt

phraser-phrases5M-%.txt:
	wget -O $@ https://lahosken.san-francisco.ca.us/frivolity/prog/phraser/phrases_5M.txt

phraser-words500K-%-snap.index: phraser-words500K-%.txt nutrimatic/bin
	# ~ 3m
	awk -F'\t' '{ for (i=0; i < $$1; i++) print $$2 }' phraser-words500K-$*.txt | ./merge.sh $@

phraser-phrases5M-%-snap.index: phraser-phrases5M-%.txt nutrimatic/bin
	# ~ 10m
	awk -F'\t' '{ for (i=0; i < $$1; i++) print $$2 }' phraser-phrases5M-$*.txt | ./merge.sh $@