images=$(wildcard images/*.jpg)
# creates: images/001.jpg images/002.jpg images/000.jpg

tmpfile:= $(shell mktemp)
color_w:="\033[0;29m" # add color to output
color_r:="\033[0;31m" # echo $(color_r) something
color_g:="\033[0;32m"
color_b:="\033[0;34m"
space:= $(empty) $(empty)
newline:= '\n'
listtxt:= $(subst $(space),$(newline),$(images))
OS:= $(shell uname)
# subst is a way to do string replacements, it works like this: $(subst $(delimitator),$(replacement),$(list))
# it's used here to make a list of the images, with one filename on each line

rmtmp:
	rm $(tmpfile)

testif:
ifeq ($(OS),Darwin)
	@echo $(OS)
endif

dirs: # create the directories for the working structures
	mkdir images # scanned image dir
	mkdir output # outputs dir
	@echo $(color_r)'Directories made'

tesseract:
	echo $(listtxt) > output/list.txt
	tesseract output/list.txt output/plain

myscript: tesseract
	cat output/plain.txt | python3 src/myscript.py > output/a-new-file.txt

wordtagger: tesseract
	cat output/plain.txt | python3 src/wordtagger.py > output/tagged-words.txt

visualization: $(images) $(tmpfile) #requires mplayer
	@echo $(tmpfile)
	for i in $(images); do \
		cat $$i >> $(tmpfile); \
	done;

ifeq ($(OS),Darwin)
	cat $(tmpfile) | mplayer -sws 4 -zoom -vf dsize=720:720 -demuxer rawvideo -rawvideo w=56:h=64:i420:fps=25 -;
else
	cat $(tmpfile) | mplayer -vo x11 -sws 4 -zoom -vf dsize=720:720 -demuxer rawvideo -rawvideo w=50:h=50:i420:fps=25 -;
endif
#	ifeq ($(shell uname), Linux)
	#	cat $(tmpfile) | mplayer -vo x11 -sws 4 -zoom -vf dsize=720:720 -demuxer rawvideo -rawvideo w=50:h=50:i420:fps=25 -;\


# ** Makefile Syntax notes **
# @ preceding command tells make not to print the command being executed
#