Configuration

import Foundation
import AppProtection

class AppSecurity: AppProtectionRaspDelegate {
    
    private let appProtection: AppProtectionService

    /// Creates AppSecurity instance
    /// - Parameter clientId: ID of the user
    init(clientId: String?) {
    
        // Prepare the RASP feature configuration
        let raspConfig = AppProtectionRaspConfig(
            jailbreak: .exit("https://myurl.com/jalibreak-explained"), // exit on jailbroken phone
            debugger: .block, // block debugger
            reverseEngineeringTools: .notify, // let me know when user installed revers engineering tools
            httpProxy: .notify, // notify me via delegate when http proxy is enabled
            repackage:.exit([AppProtectionTrustedCert(withBase64EncodedString: "BASE_64_ENCODED_CERT")!], "https://myurl.com/repackage-explained"), // follow documentation how to obtain certificate string
            screenCapture: .notify // notify me via delegate when user takes a screenshot
        )
        
        // Prepare the configuration for events
        let eventConfig = AppProtectionEventConfig(
            enableEventCollection: true, // enable event collection in general
            enableScreenshotTakenCollection: true // /track screenshot events in the Malwarelytics console on the server
        )
        
        // Prepare a configuration for service
        let config = AppProtectionConfig(
            username: "$USERNAME",
            password: "$PASSWORD",
            signaturePublicKey: "$PUBKEY",
            clientAppUserId: clientId,
            raspConfig: raspConfig,
            eventsConfig: eventConfig
        )

        // Create the Service
        self.appProtection = AppProtectionService(config: config)

        // Set the delegate to obtain RASP callbacks
        self.appProtection.rasp.addDelegate(self)
    }
    
    deinit {
        // When our AppSecurity class is being "destroyed", we want 
        // to stop all features of the AppProtectionService.
        // To do so, we need to release all its assets before
        // the only reference that "holds it" is removed.
        
        self.appProtection.release()
    }

    /// Report in-app incident
    /// - Parameter incident: Incident that happened inside the app
    func reportIncident(_ incident: RaspIncident) {
        self.appProtection.events.log(incident.appProtectionValue)
    }

    /// Call when client id changes (paired/unpaired the app).
    /// - Parameter clientId: Client id
    func setClientId(_ clientId: String?) {
        self.appProtection.clientAppUserId = clientId
    }

    /// AppProtection resets the device indicator and starts registering it as a new device.
    func resetServiceId() {
        self.appProtection.resetInstanceId()
    }

    // MARK: - AppProtectionRaspDelegate

    func debuggerDetected() {
        // react to debugger
    }

    func jailbreakDetected() {
        // react to jailbreak
    }

    func repackageDetected() {
        // react to repackage
    }

    func httpProxyEnabled() {
        // react to http proxy enabled
    }

    func userScreenshotDetected() {
        // react to user screenshot
    }

    func reverseEngineeringToolsDetected() {
        // react to reverse engineering tools
    }

    func systemPasscodeConfigurationChanged(enabled: Bool) {
        // react to system passcode change
    }

    func systemBiometryConfigurationChanged(enabled: Bool) {
        // react to biometry configuration changed
    }
    
    func screenCapturedChanged(isCaptured: Bool) {
        // react to screen capturing (casting to different device)
    }
}

enum RaspIncident {
    case sslInvalidCert
    case deviceUnpaired
    case devicePaired
    case deviceBlocked
    case userIgnoredWeakPassphrase
    case passphraseChanged
    case biometryEnabled
    case biometryDisabled
    case authenticationFailed
    case authenticationSuccess

    var appProtectionValue: AppProtectionEvent {
        switch self {
        case .sslInvalidCert: return AppProtectionEvent.Network.sslInvalidCertificate
        case .deviceUnpaired: return AppProtectionEvent.Authentication.deviceUnpaired
        case .devicePaired: return AppProtectionEvent.Authentication.devicePaired
        case .deviceBlocked: return AppProtectionEvent.Authentication.deviceBlocked
        case .userIgnoredWeakPassphrase: return AppProtectionEvent.Authentication.userIgnoredWeakPassphrase
        case .passphraseChanged: return AppProtectionEvent.Authentication.passphraseChanged
        case .biometryEnabled: return AppProtectionEvent.Authentication.biometryEnabled
        case .biometryDisabled: return AppProtectionEvent.Authentication.biometryDisabled
        case .authenticationFailed: return AppProtectionEvent.Authentication.authenticationFailed
        case .authenticationSuccess: return AppProtectionEvent.Authentication.authenticationSuccess
        }
    }
}