MAKEFLAGS    += -R -r

dstdir	     := $(shell pwd)
export dstdir

ARDUINO       = $(PERL) $(realpath arduino-wrapper)
ZIP	      = zip
PERL	      = perl

SKETCH	      = max80
TARGET	      = output/$(SKETCH).ino.bin
GENFILES      = $(SKETCH)/data/www.zip
WWW	      = www
PORT	     ?= /dev/ttyACM0

all: $(TARGET)

common	     := ../common

output/%.ino.bin: $(GENFILES)
	cd $(SKETCH) && $(ARDUINO) compile

-include $(SKETCH).deps

%.deps:
	if ! test -L '$*/src/common'; then	\
		rm -rf '$*/src/common' 2>/dev/null ; \
		cd '$*/src' && ln -sf ../../$(common) . ; \
	fi
	( echo -n 'output/$*.ino.bin: ' && \
	  find -L '$*' -type f '(' -path '$*/data/*' \
		$(patsubst %,-o -name '*.%',ino c h S cpp hpp tpp ipp) \
		')' -printf '\\\n\t%p ' && \
	  echo '' ) > '$@'

.PHONY: zip
zip: zipexclude
	mkdir -p zip
	if ! cmp -q ../version.mk www/version 2>/dev/null; then \
		cp -f ../version.mk www/version; \
	fi
	cd www && \
		TZ=GMT0 \
		$(ZIP) -9DrpX -UN=UTF8 -FS ../zip/www.zip . -x@../zipexclude

# Ugly hack but needed to avoid unnecessary rebuilds
$(SKETCH)/data/www.zip: zip
	if [ ! -f $@ ] || [ zip/$(@F) -nt $@ ]; then \
		mkdir -p $(@D) ; \
		cp -f zip/$(@F) $@; \
		rm -f build/sketch/www.c build/sketch/www.c.*; \
	fi

upload: $(TARGET)
	cd $(SKETCH) && $(ARDUINO) upload  -p $(PORT) $(SKETCH)

clean:
	rm -rf build cache zip www.zip *.deps $(GENFILES) \
		$(SKETCH)/src/common

spotless: clean
	rm -rf arduino output