# ---- set these as environment variables if different ----
SDK ?= /usr/lib/android-sdk
NDK ?= /usr/lib/android-ndk
AVER ?= 23
# ---------------------------------------------------------

sys = $(shell uname -s | sed 's/MINGW.*/mingw/')
ifeq ($(sys), Linux)
	host = linux-x86_64
endif
ifeq ($(sys), mingw)
	host = windows-x86_64
endif

CCSYSROOT = --sysroot=$(NDK)/sysroot
LDSYSROOT64 = --sysroot=$(NDK)/platforms/android-$(AVER)/arch-arm64
LDSYSROOT32 = --sysroot=$(NDK)/platforms/android-$(AVER)/arch-arm
PLATFORM_JAR = $(SDK)/platforms/android-$(AVER)/android.jar
TCPATH = $(NDK)/toolchains/llvm/prebuilt/$(host)/bin
TC64 = $(TCPATH)/aarch64-linux-android$(AVER)-
TC32 = $(TCPATH)/armv7a-linux-androideabi$(AVER)-

src = $(wildcard src/*.c) $(wildcard src/scr/*.c) $(wildcard src/android/*.c)
obj64 = $(src:.c=.arm64.o)
obj32 = $(src:.c=.arm32.o)
dep = $(src:.c=.d)
name = andemo
lib_so = lib$(name).so
so64 = lib$(name)64.so
so32 = lib$(name)32.so

pkgprefix = com.mutantstargoat
pkg = $(pkgprefix).$(name)
act = android.app.NativeActivity

warn = -pedantic -Wall
dbg = -g
opt = -O3 -ffast-math -fno-strict-aliasing
def = -DGLDEF
incdir = -Isrc -Ilibs -Ilibs/imago/src -Ilibs/treestore
libdir64 = -Llibs/android64
libdir32 = -Llibs/android32

CFLAGS = $(CCSYSROOT) $(ISYS) $(warn) $(dbg) $(opt) $(def) $(incdir) -fPIC -fcommon -MMD
LDFLAGS = $(LDSYSROOT) -lm -landroid -llog -lEGL -lGLESv2 -limago -lpsys -lanim -ltreestore

$(name).apk: $(name).aligned.apk keystore.jks
	apksigner sign --ks keystore.jks --ks-key-alias androidkey --ks-pass pass:android --key-pass pass:android --out $@ $<

keystore.jks:
	keytool -genkeypair -keystore $@ -alias androidkey -validity 10000 -keyalg RSA -keysize 2048 -storepass android -keypass android

$(name).aligned.apk: $(name).unsigned.apk
	zipalign -f -p 4 $< $@

$(name).unsigned.apk: $(so64) $(so32) AndroidManifest.xml $(icons)
	rm -f apkbuild/lib/arm64-v8a/* apkbuild/lib/armeabi-v7a/* apkbuild/lib/armeabi/*
	rm -f apkbuild/assets/data/* apkbuild/assets/sdr/*
	mkdir -p apkbuild/lib/arm64-v8a apkbuild/lib/armeabi-v7a apkbuild/lib/armeabi
	cp $(so64) apkbuild/lib/arm64-v8a/$(lib_so)
	cp $(so32) apkbuild/lib/armeabi-v7a/$(lib_so)
	cp $(so32) apkbuild/lib/armeabi/$(lib_so)
	mkdir -p apkbuild/assets/data apkbuild/assets/sdr
	cp -r data/* apkbuild/assets/data
	cp -r sdr/* apkbuild/assets/sdr
	mkdir -p apkbuild/res/drawable-xxhdpi apkbuild/res/drawable-xxxhdpi
	mkdir -p apkbuild/res/drawable-xhdpi apkbuild/res/drawable-hdpi
	mkdir -p apkbuild/res/drawable-mdpi apkbuild/res/drawable-ldpi
	cp data/icon192.png apkbuild/res/drawable-xxxhdpi/ic_launcher.png
	cp data/icon144.png apkbuild/res/drawable-xxhdpi/ic_launcher.png
	cp data/icon96.png apkbuild/res/drawable-xhdpi/ic_launcher.png
	cp data/icon72.png apkbuild/res/drawable-hdpi/ic_launcher.png
	cp data/icon48.png apkbuild/res/drawable-mdpi/ic_launcher.png
	cp data/icon36.png apkbuild/res/drawable-ldpi/ic_launcher.png
	aapt package -f -F $@ -I $(PLATFORM_JAR) -M AndroidManifest.xml -S apkbuild/res apkbuild

$(so64): $(obj64) Makefile.android libs
	$(TC64)clang -o $@ -shared -Wl,-soname,$(lib_so) $(obj64) $(libdir64) $(LDFLAGS)

$(so32): $(obj32) Makefile.android libs
	$(TC32)clang -o $@ -shared -Wl,-soname,$(lib_so) $(obj32) $(libdir32) $(LDFLAGS)

-include $(dep)

%.arm64.o: %.c
	$(TC64)clang -o $@ $(CFLAGS) -c $<

%.arm32.o: %.c
	$(TC32)clang -o $@ $(CFLAGS) -c $<

.PHONY: clean
clean:
	rm -f $(obj64) $(obj32) $(lib_so)

.PHONY: cleandep
cleandep:
	rm -f $(dep)

.PHONY: libs
libs: libs64 libs32

.PHONY: libs64
libs64:
	$(MAKE) CC=$(TC64)clang sys=android-arm64 -C libs

.PHONY: libs32
libs32:
	$(MAKE) CC=$(TC32)clang sys=android-arm32 -C libs

.PHONY: clean-libs
clean-libs: clean-libs64 clean-libs32

.PHONY: clean-libs64
clean-libs64:
	$(MAKE) sys=android-arm64 -C libs clean

.PHONY: clean-libs32
clean-libs32:
	$(MAKE) sys=android-arm32 -C libs clean

.PHONY: install
install: $(name).apk
	adb install -r $(name).apk

.PHONY: uninstall
uninstall:
	adb uninstall $(pkg)

.PHONY: run
run:
	adb shell am start -n $(pkg)/$(act)

.PHONY: stop
stop:
	adb shell am force-stop $(pkg)

.PHONY: logcat
logcat:
	adb logcat $(name):V AndroidRuntime:V DEBUG:V '*:S'