# Flutter Plugin

import 'package:flutter_idensic_mobile_sdk_plugin/flutter_idensic_mobile_sdk_plugin.dart';

void launchSDK() async {

  // From your backend get an access token for the applicant to be verified.
  // The token must be generated with `levelName` and `userId`,
  // where `levelName` is the name of a level configured in your dashboard.
  final String accessToken = "your_access_token";

  // The access token has a limited lifespan and when it's expired, you must provide another one.
  // So be prepared to get a new token from your backend.
  final onTokenExpiration = () async {
    // call your backend to fetch a new access token (this is just an example)
    return Future<String>.delayed(Duration(seconds: 2), () => "your new access token");
  };

  final SNSStatusChangedHandler onStatusChanged = (SNSMobileSDKStatus newStatus, SNSMobileSDKStatus prevStatus) {
    print("The SDK status was changed: $prevStatus -> $newStatus");
  };

  final snsMobileSDK = SNSMobileSDK.init(accessToken, onTokenExpiration)
    .onTestEnv() // remove this when you work with the production environment
    .withHandlers( // optional handlers
      onStatusChanged: onStatusChanged
    )
    .withDebug(true) // set debug mode if required
    .withLocale(Locale("en")) // optional, for cases when you need to override the system locale
    .build();

  final SNSMobileSDKResult result = await snsMobileSDK.launch();

  print("Completed with result: $result");
}

SNSMobileSDKResult(
  success: false,
  status: SNSMobileSDKStatus.Failed,
  errorType: SNSMobileSDKErrorType.Unauthorized,
  errorMsg: "Unauthorized access with accessToken=[your access token]",
  actionResult: null
)

body: Center(
  child: Column(
    mainAxisAlignment: MainAxisAlignment.center,
    children: <Widget>[
...
      Container(
        alignment: Alignment.center,
        child: RaisedButton(onPressed: () => launchSDK(),
        child: Text("Launch Sumsub SDK")),
      ),
...
    ],
  ),
),

snsMobileSDK.dismiss()

final SNSEventHandler onEvent = (SNSMobileSDKEvent event) {
  print("onEvent: $event");
};

final snsMobileSDK = SNSMobileSDK.init(accessToken, onTokenExpiration)
  .withHandlers(
    onEvent: onEvent
  )

SNSMobileSDKEvent(
  eventType: "StepInitiated",
  payload: {
    "idDocSetType": "IDENTITY"
  }
)

SNSMobileSDKResult(
  success: true,
  status: SNSMobileSDKStatus.ActionCompleted,
  errorType: null,
  errorMsg: null,
  actionResult: SNSMobileSDKActionResult(
    actionId: "5f9186b8aee05c5fa1ae11bb",
    answer: SNSMobileSDKAnswerType.Green
  )
)

final SNSActionResultHandler onActionResult = (SNSMobileSDKActionResult result) {
  print("onActionResult: $result");

  // you must return a `Future` that in turn should be completed with a value of `SNSActionResultHandlerReaction` type
  // you could pass `.Cancel` to force the user interface to close, or `.Continue` to proceed as usual
  return Future.value(SNSActionResultHandlerReaction.Continue);
};

final snsMobileSDK = SNSMobileSDK.init(accessToken, onTokenExpiration)
  .withHandlers(
    onActionResult: onActionResult
  )