class SampleApp : Application() {
    override fun onCreate() {
        super.onCreate()
        SmartClient.setup(this)
    }
}

val clientId: String // An identifier for the client
val sessionId: String // An identifier for the current client session.
val isEmulator: Boolean // Provides if the device is an emulator or not
val isRooted: Boolean // Provides if the devices is rooted or not
val time: Long // Device current time in milis
val lang: String // Device language
val type: Device.Type // Type of the Device: Phone or tablet
val osVersion: Int // Device's os version.
val brand: String // Brand of the device
val model: String // Model of the device

interface Device {
    val isDeviceEmulator: Boolean
    val isDeviceRooted: Boolean
    val deviceTime: Long
    val deviceLang: String
    val osVersion: Int
    val brand: String
    val model: String

    val rootChecker: RootChecker

    fun provideDeviceType(): Type

    enum class Type {
        PHONE, TABLET
    }
}

/*
 * LocalDataSource
 * Contains the local data operation definitions.
 */
interface LocalDataSource {
    // Returns the client id
    fun getClientId(): String?

    // Saves the generated client id
    fun saveClientId(clientId: String)
}

typealias ClientIdGenerator = () -> String
typealias SessionIdGenerator = () -> String

val defaultClientIdGenerator: ClientIdGenerator = {
    UUID.randomUUID().toString()
}

val defaultSessionIdGenerator: SessionIdGenerator = {
    UUID.randomUUID().toString()
}

open class DefaultHeaderKeys(
    override val contentTypeKey: String = "Content-Type",
    override val acceptKey: String = "Accept",
    override val deviceLocaleKey: String = "x-device-locale",
    override val deviceBrandKey: String = "x-device-brand",
    override val deviceModelKey: String = "x-device-model",
    override val deviceOsKey: String = "x-device-os",
    override val deviceOsTypeKey: String = "x-device-os-type",
    override val channelKey: String = "x-channel",
    override val deviceTypeKey: String = "x-device-type",
    override val isEmulatorKey: String = "x-app-is-emulator",
    override val isRootedKey: String = "x-is-rooted",
    override val timeStampKey: String = "x-timestamp",
    override val clientIdKey: String = "x-client-id",
    override val sessionIdKey: String = "x-session-id"
) : HeaderKeyMap