ext {
	javaVersion = JavaVersion.VERSION_11
	javaMajor = javaVersion.getMajorVersion()
	minAndroidSdk = 19

	androidBootClasspath = getAndroidRuntimeJar(minAndroidSdk)

	// Export the function by turning it into a closure.
	// https://stackoverflow.com/a/23290820/194894
	getAndroidRuntimeJar = this.&getAndroidRuntimeJar
}

repositories {
	mavenLocal()
	mavenCentral()
}

def getAndroidRuntimeJar(androidApiLevel) {
	def androidHome = getAndroidHome()
	def androidJar = new File("$androidHome/platforms/android-${androidApiLevel}/android.jar")
	if (androidJar.isFile()) {
		return androidJar
	} else {
		throw new Exception("Can't find android.jar for API level ${androidApiLevel}. Please install corresponding SDK platform package")
	}
}

def getAndroidHome() {
	def androidHomeEnv = System.getenv("ANDROID_HOME")
	if (androidHomeEnv == null) {
		throw new Exception("ANDROID_HOME environment variable is not set")
	}
	def androidHome = new File(androidHomeEnv)
	if (!androidHome.isDirectory()) throw new Exception("Environment variable ANDROID_HOME is not pointing to a directory")
	return androidHome
}