MD = $(wildcard src/*.md)
DOTS = $(wildcard src/*.dot)
ASYS = $(wildcard src/*.asy)
PYS = $(wildcard src/img_*.py)
PDFS = $(MD:src/%.md=out/%.pdf)

IMG_PDFS = $(ASYS:src/%.asy=img/%.pdf) $(PYS:src/img_%.py=img/%.pdf) $(DOTS:src/%.dot=img/%.pdf)

IMGS = $(IMG_PDFS)

TEMPLATE = eisvogel
PDF_ENGINE = xelatex
PANDOC = pandoc
PANDOC_OPTIONS = -F panflute -F pandoc-citeproc --pdf-engine=$(PDF_ENGINE) --template $(TEMPLATE) -N --standalone --listings

GRAPHVIZ = dot
GRAPHVIZ_OPTIONS = -Tpdf

ASY = asy
ASY_OPTIONS = -noV -f pdf

PYTHON = python
PYTHON_OPTIONS =

mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
current_dir := $(notdir $(patsubst %/,%,$(dir $(mkfile_path))))

.PHONY: clean all default
all: $(PDFS)
default: all

out/%.pdf: src/%.md $(IMGS) Makefile
	$(PANDOC) $(PANDOC_OPTIONS) -o $@ $<

img/%.pdf: src/%.dot
	$(GRAPHVIZ) $(GRAPHVIZ_OPTIONS) -o $@ $<

img/%.pdf: src/img_%.py
	$(PYTHON) $(PYTHON_OPTIONS) $< $@

img/%.pdf: src/%.asy
	$(ASY) $(ASY_OPTIONS) -o $@ $<

watch:
	watchexec -w src -w data -w filters -w Makefile make all

clean:
	-rm $(PDFS) $(IMGS)