SHELL = /bin/sh
.SUFFIXES:

# functions for pages, and parts, takes a list of sources as the only argument
getpages = $(patsubst %.md,public_html/%.html,$(1))
getparts = $(patsubst %.md,public_html/%.html.part,$(1))

.PHONY: all
all: public_html/index.html $(call getpages,$(shell pandoc lua pandoc/links.lua --follow index.md))

public_html/%.html: %.md
	$(eval links := $(shell pandoc lua pandoc/links.lua $<))
	$(if $(links),$(MAKE) $(call getparts,$(links)))
	pandoc \
		--data-dir pandoc \
		--defaults bavbavhaus.net.yaml \
		--template bavbavhaus.net.html5 \
		--metadata url=$*.html \
		$(patsubst %,--metadata links=%,$(call getparts,$(links))) \
		--output $@ \
		$<

public_html/%.html.part: %.md
	pandoc \
		--data-dir pandoc \
		--defaults bavbavhaus.net.yaml \
		--template bavbavhaus.net.inline.html5 \
		--id-prefix $* \
		--metadata url=$*.html \
		--output $@ \
		$<

.PHONY: clean
clean:
	$(RM) public_html/*.html.part
	$(RM) public_html/*.html