buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

apply plugin: 'com.android.library'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        minSdkVersion 21
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'io.v:vanadium-android:2.1.3'
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

class VanadiumEnvironment {
    File jiriRoot;

    public static getVanadiumEnvironment() {
        VanadiumEnvironment result = new VanadiumEnvironment()

        if (!System.getenv().containsKey('JIRI_ROOT')) {
            throw new InvalidUserDataException("JIRI_ROOT is not set. "
                    + "Please follow the Vanadium installation instructions at "
                    + "https://vanadium.github.io/installation/")
        }

        result.jiriRoot = new File(System.getenv()['JIRI_ROOT'])
        return result
    }
}

def addSyncbaseLib(Map args) {
    def abiName = args.abiName
    def goArch = args.goArch
    def jiriRoot = VanadiumEnvironment.getVanadiumEnvironment().jiriRoot.getAbsolutePath()

    def check = task("checkVanadiumAndroidEnvironment-${goArch}", type: Exec) {
        commandLine 'jiri', 'profile', 'list',
                '--info=Target.InstallationDir',
                "--target=${goArch}-android", 'v23:android'
        standardOutput = new ByteArrayOutputStream()
        doLast {
            def androidOutputDir = new File(standardOutput.toString().trim())
            if (!androidOutputDir.exists() || !androidOutputDir.isDirectory()) {
                throw new InvalidUserDataException(
                        androidOutputDir.toString() + " does not exist or is not a directory. "
                                + "The android base profile is probably missing. Try running\n\n"
                                + "jiri profile install --target=${goArch}-android v23:android\n\n"
                                + "and then try build again."
                )
            }
        }
    }

    def goBuild = task("buildSyncbaseLib-${goArch}", type: Exec, dependsOn: check) {
        environment 'GOOS', 'android'
        environment 'GOARCH', goArch
        commandLine 'jiri', 'go', "--target=${goArch}-android", 'install',
                '-buildmode=c-shared', '-v', '-tags', 'android',
                'v.io/x/ref/services/syncbase/bridge/cgo'
    }

    // Copy the shared library to its ultimate destination.
    def copyLib = task("copySyncbaseLib-${goArch}", type: Copy, dependsOn: goBuild) {
        from jiriRoot + "/release/go/pkg/android_${goArch}_shared/v.io/x/ref/services/syncbase/bridge/"
        into "src/main/jniLibs/${abiName}"
        include 'cgo.a'
        rename 'cgo.a', 'libsyncbase.so'
    }

    tasks.copySyncbaseLib.dependsOn(copyLib)
}

task(copySyncbaseLib)
addSyncbaseLib abiName: 'x86_64', goArch: 'amd64'
addSyncbaseLib abiName: 'armeabi-v7a', goArch: 'arm'