package net.bluemangoo.indpjsk.vpn

import android.util.Log

object VpnBridge {

    private const val TAG = "VpnBridge"
    private var loaded = false

    @Volatile
    var stepListener: ((String, String?) -> Unit)? = null

    init {
        loaded = try {
            System.loadLibrary("core_vpn")
            true
        } catch (t: Throwable) {
            Log.e(TAG, "loadLibrary core_vpn failed", t)
            false
        }
    }

    fun isAvailable(): Boolean = loaded

    @JvmStatic
    external fun boot(tunFd: Int, stepsJson: String, proxy: String?): Boolean

    @JvmStatic
    external fun stopSession()

    @JvmStatic
    external fun shutdownSession()

    @Suppress("unused")
    @JvmStatic
    fun nativeStepResult(stepId: String, url: String?) {
        stepListener?.invoke(stepId, url)
    }

    @Suppress("unused")
    @JvmStatic
    fun nativeLog(level: String, msg: String) {
        when (level) {
            "error" -> VpnLog.error(msg)
            "warn" -> VpnLog.warn(msg)
            "info" -> VpnLog.info(msg)
            else -> VpnLog.info(msg)
        }
    }
}