.PHONY: control

TARBALL=/home/android-studio-2022.1.1.19-linux.tar.gz
VERSION=2022
MINOR=1.1.19
BASENAME=android-studio

help:
	@echo
	@echo "make all     # to attempt to download, extract and build the .deb package using dpkg"
	@echo

all: download clean extract DEBIAN build

# uses 'ar' to make a .deb file
raw: download clean extract DEBIAN tar-ar

clean:
	rm -rf ../files
	rm -f ../*.deb
	rm -f ../*.tar.xz data.tar.xz
	rm -rf DEBIAN

download:
	@echo
	@echo CHECK FOR NEW VERSION AT: https://developer.android.com/studio
	@echo CHECK FOR NEW VERSION AT: https://developer.android.com/studio
	@echo CHECK FOR NEW VERSION AT: https://developer.android.com/studio
	@echo

extract:
	mkdir -p ../files/opt/
	cd ../files/opt/ && tar xfz ${TARBALL}

# makes the DEBIAN/ directory
DEBIAN:
	mkdir -p DEBIAN
	make md5sum
	make control
	cp preinst DEBIAN
	cp postinst DEBIAN

control:
	mkdir -p DEBIAN
	cp control DEBIAN/
	echo Version: ${VERSION}.${MINOR} >>DEBIAN/control

md5sum:
	cd files/ && find -type f -exec md5sum '{}' \; |sort -k2 >../DEBIAN/md5sums

build:
	mv DEBIAN ../files/
	cd .. && dpkg-deb --build files ${BASENAME}_${VERSION}.${MINOR}_amd64.deb
	cd .. && dpkg-deb --info ${BASENAME}_${VERSION}.${MINOR}_amd64.deb

# how to make a debian package "raw" just using tar and ar
#
# READ THIS AGAIN:
#
# A .deb file is just output from 'ar rcs'
#
tar-ar: control
	cd DEBIAN && tar --ignore-failed-read -cvJf ../control.tar.xz .
	cd files && tar -cvJf ../data.tar.xz .
	ar rcs ${BASENAME}_${VERSION}.${MINOR}_amd64.deb debian-binary control.tar.xz data.tar.xz
	dpkg-deb --info ${BASENAME}_${VERSION}.${MINOR}_amd64.deb