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      = www.zip
WWW	      = www
PORT	     ?= /dev/ttyACM0

all: $(TARGET)

common = $(SKETCH)/src/common

$(TARGET): $(shell find $(SKETCH) -type f) $(GENFILES)
	if ! test -L '$(common)'; then	\
		rm -rf '$(common)' ; \
		cd '$(SKETCH)/src' && ln -sf ../../../common . ; \
	fi
	cd $(SKETCH) && $(ARDUINO) compile

.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
www.zip: zip
	if [ ! -f $@ ] || [ zip/$@ -nt $@ ]; then \
		cp -f zip/$@ $@; \
		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 $(GENFILES) $(common)

spotless: clean
	rm -rf arduino output