PREFIX := $(if $(PREFIX),$(PREFIX),/usr)
PYTHON3_VERSION := $(shell python3 --version | cut -d' ' -f 2 | cut -d. -f 1,2)
ARCH := $(shell uname -m | sed -e 's/x86_64/x64/')

SDK_PATH=./leap/LeapSDK

all:
	[ -f ./LeapSDK.tar.gz ] || wget -O LeapSDK.tar.gz http://warehouse.leapmotion.com/apps/4185/download/
	mkdir -p leap
	tar xvf LeapSDK.tar.gz -C leap --strip-components 1
	cp -r $(SDK_PATH)/include ./include
	wget http://tinyurl.com/leap-i-patch -O Leap.i.diff
	patch -p0 < Leap.i.diff
	swig-3 -c++ -python -o LeapPython.cpp -interface LeapPython ./include/Leap.i
	g++ -fPIC -I/usr/include/python$(PYTHON3_VERSION)m -I/usr/include/python$(PYTHON3_VERSION) -I$(SDK_PATH)/include LeapPython.cpp $(SDK_PATH)/lib/$(ARCH)/libLeap.so -shared -o LeapPython.so

clean:
	rm -rf __pycache__
	rm -rf include
	rm -rf leap
	rm -f Leap.i.diff
	rm -f LeapPython.cpp
	rm -f LeapPython.h
	rm -f LeapPython.so
	rm -f Leap.py
	rm -f LeapSDK.tar.gz

install:
	mkdir -p $(PREFIX)/lib/python$(PYTHON3_VERSION)/site-packages/
	install -m 0644 Leap.py $(PREFIX)/lib/python$(PYTHON3_VERSION)/site-packages/Leap.py
	install -m 0755 LeapPython.so $(PREFIX)/lib/python$(PYTHON3_VERSION)/site-packages/LeapPython.so
	install -m 0755 $(SDK_PATH)/lib/$(ARCH)/libLeap.so $(PREFIX)/lib/libLeap.so

uninstall:
	rm -f $(PREFIX)/lib/python$(PYTHON3_VERSION)/site-packages/Leap.py
	rm -f $(PREFIX)/lib/python$(PYTHON3_VERSION)/site-packages/LeapPython.so
	rm -f $(PREFIX)/lib/libLeap.so