.POSIX:
.SUFFIXES: .apk .unsigned .aligned

include defs.mk

PROJECT = org.slcl
DX = $(ANDROIDSDK)/build-tools/debian/dx
MANIFEST = AndroidManifest.xml
OBJECTS = \
	src/org/slcl/core/Connection.class \
	src/org/slcl/core/Cookie.class \
	src/org/slcl/core/Directory.class \
	src/org/slcl/core/Login.class \
	src/org/slcl/core/Result.class \
	src/org/slcl/Alert.class \
	src/org/slcl/Directory.class \
	src/org/slcl/InternalFile.class \
	src/org/slcl/LoginActivity.class \
	src/org/slcl/Main.class
RESOURCES = \
	res/layout/activity_directory.xml \
	res/layout/activity_main.xml
R = src/org/slcl/R.java
PASS = password.secret
DNAME = "cn=slcl, ou=slcl, o=slcl, c=ES"
JODA_TIME = joda-time/joda-time.jar
JODA_CONVERT = joda-convert/joda-convert.jar

# Resources:
# https://www.hanshq.net/command-line-android.html
# https://unix.stackexchange.com/questions/230673/how-to-generate-a-random-string
# https://stuff.mit.edu/afs/sipb/project/android/docs/guide/topics/resources/layout-resource.html#layoutvalues

all: $(PROJECT).apk

$(PROJECT).apk: keystore.jks

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

keystore.jks: $(PASS)
	(for i in 1 2; do cat $(PASS); done; echo) \
		| keytool \
		-genkeypair \
		-dname $(DNAME) \
		-keystore $@ \
		-alias androidkey \
		-keyalg RSA \
		-keysize 4096

$(PASS):
	(LC_ALL=C \
		tr -dc 'A-Za-z0-9!"#$$%&'\''()*+,-./:;<=>?@[\]^_`{|}~' \
		< /dev/urandom | head -c 100; echo) > $(PASS)

.unsigned.aligned:
	zipalign -f -p 4 $< $@

$(PROJECT).unsigned: dex/classes.dex $(MANIFEST)
	aapt package -f -F $@ -I $(PLATFORM) -M $(MANIFEST) -S res dex

dex/classes.dex: .build $(MANIFEST)
	mkdir -p dex
	$(DX) --dex --min-sdk-version=9 --output=$@ src $(JODA_TIME) $(JODA_CONVERT)

.build: $(OBJECTS:.class=.java) $(R) $(JODA_TIME) $(JODA_CONVERT)
	javac \
		-g \
		-bootclasspath $(PLATFORM) \
		-classpath $(JODA_CONVERT):$(JODA_TIME) \
		-sourcepath src \
		$(OBJECTS:.class=.java)
	touch $@

$(JODA_TIME): $(JODA_CONVERT)
	+cd joda-time && $(MAKE)

$(JODA_CONVERT):
	+cd joda-convert && $(MAKE)

$(R): $(MANIFEST) $(RESOURCES)
	aapt package -f -m -S res -M $(MANIFEST) -I $(PLATFORM) -J src

clean:
	+cd joda-convert && $(MAKE) clean
	+cd joda-time && $(MAKE) clean
	rm -f $(R) $(OBJECTS) $(PROJECT).unsigned \
		$(PROJECT).aligned $(PROJECT).apk.idsig dex/classes.dex

distclean: clean
	rm -rf dex/ *.apk keystore.jks $(PASS)