.PHONY: all clean genreadme

CATS=aaaa comms ground-segment payload satellite-bus space
DOCS_ALL=$(wildcard $(addsuffix /**/README.md,$(CATS)))
WRITEUP_PDF=writeup.pdf
PDF_DIR=build
HTML_DIR=html
HTML_CONTENT_ALL=$(addprefix $(HTML_DIR)/,$(wildcard $(addsuffix /**/*,$(CATS))))
HTML_DOCS=$(addprefix $(HTML_DIR)/,$(DOCS_ALL:README.md=index.html))
HTML_INDEX=$(HTML_DIR)/index.html
HTML_TEMPLATE=$(abspath default.html5)

all: README.md $(WRITEUP_PDF) $(HTML_INDEX)

clean:
	$(RM) -r $(WRITEUP_PDF) $(PDF_DIR) $(HTML_DIR)

README.md: $(DOCS_ALL)
	@echo "GEN    $@"
	@(printf "# BLAHAJ Hack-a-Sat 2020 Writeups\n\n"; for file in $(DOCS_ALL); do \
		printf -- "- [%s](%s)\n" "$$(dirname $$file)" "$$(dirname $$file)"; done) > README.md

$(WRITEUP_PDF): $(DOCS_ALL) fonts.tex misc.tex top.md
	@echo "GEN    writeup.md"
	@mkdir $(PDF_DIR) 2>/dev/null || true
	@find . -mindepth 3 -iname '*.png' -exec cp {} $(PDF_DIR) \;
	@find . -mindepth 3 -iname '*.py' -exec cp {} $(PDF_DIR) \;
	@cp fonts.tex misc.tex jork.png $(PDF_DIR)
	@for md in top.md $(DOCS_ALL); do cat $$md; printf "\n\n\\\\newpage\n\n"; done > $(PDF_DIR)/writeup.md
	@echo "PDF    $@"
	@cd $(PDF_DIR) && \
		pandoc --filter pandoc-include-code --toc --toc-depth 1 -f markdown-implicit_figures \
		-i writeup.md --pdf-engine=lualatex -o writeup.pdf
	@cp $(PDF_DIR)/writeup.pdf $@

$(HTML_INDEX): $(HTML_CONTENT_ALL) $(HTML_DOCS) README.md
	@echo "GEN    $@"
	@cp -r mathjax/ $(HTML_DIR)/mathjax/
	@pandoc -i README.md -o $@

$(HTML_CONTENT_ALL): $(HTML_DIR)/%: %
	@mkdir -p $(dir $@) || true
	@cp $< $@

$(HTML_DOCS): %index.html: %README.md
	@echo "HTML   $@"
	@cd $(dir $@) && \
		pandoc --filter pandoc-include-code --toc --toc-depth 2 -f markdown \
		-i README.md -t html5 -o index.html --mathjax="../../mathjax/tex-mml-chtml.js" \
		-s --metadata title="$$(grep '^# ' README.md)" --template $(HTML_TEMPLATE)