markdown = $(wildcard */*.md */*/*.md)

publish = $(patsubst %, .publish/%, $(markdown))

.dbs/requires.fmt: | .dbs/
	echo "- [{{requires_title}}]({{requires_path}})" > $@

$(publish): .publish/%.md: %.md | .dbs/notes.rec .dbs/requires.fmt
	mkdir -p $(@D)
	sed -n '1,/^---$$/p' $< > $@
	test "$$(recsel -t guide -j requires .dbs/notes.rec -e "path = '$<'" -c)" -lt 1 \
	|| { printf '\n---\n%s\n\n' "**Requirements**" >> $@ \
	&& recsel -t guide -j requires .dbs/notes.rec -e "path = '$<'" -p requires_title,requires_path | recfmt -f .dbs/requires.fmt >> $@ \
	&& printf '\n%s\n\n' '---' >> $@ ;}
	sed '1,/---/d' $< >> $@

cmds != recsel command.rec -t command -G bin -CP bin | sort -u
lists = $(patsubst %,.publish/lists/%.md, $(cmds))

get_title = printf 'title: %s\n' '${1}'
get_tags = recsel -t $(basename $<) $< -G bin \
	-e 'bin = "$(1)"' -U -CP tag,bin | \
	sed 's/.*/- &/'

list_commands = recsel -t $(basename $<) $< -e 'bin = "$(1)"' | \
	recfmt -f lists.fmt

.publish/lists/:| .publish/

$(lists): .publish/lists/%.md: command.rec | .publish/lists/
	@printf '%s\n' '---' > $@
	@$(call get_title,$(basename $(notdir $@))) >> $@
	@printf '%s\n' 'tags: ' >> $@
	@$(call get_tags,$(basename $(notdir $@))) >> $@
	@printf '%s\n' '---' >> $@
	@$(call list_commands,$(basename $(notdir $@))) >> $@


.PHONY: publish
publish: $(lists) $(publish) ## Web publishable web pages