Flutter

Percept Flutter SDK

Getting Started

1. Install

1. Add the following lines to your package's pubspec.yaml file to include the dependency:

dependencies:
      percept_flutter: ^1.2.0

2. To install the package, use the following command in your command line interface:

$ flutter pub get

3. Import the package in your Dart code to make it available for use:

import 'package:percept_flutter/percept_flutter.dart'

2. Initialize Percept SDK

import 'package:percept_flutter/percept_flutter.dart'

class YourClassState extends State<YourClass> {
  Percept percept;

  @override
  void initState() {
    super.initState();
    percept=Percept(token)
  }
}

Percept constructor takes some optional parameters which are as follows:

Parameter Name	Description	Default Value
autoCaptureAppLifecycleEvents	Auto track app life cycle events or not	true
autoCaptureUnhandledErrors	Auto track unhandled errors	true
maxBatchSize	Default batch size of event requests	100
maxDelayMins	Maximum interval between retry requests in case of failure	30 min
maxCacheSizeMb	Maximum cache size used to store failed requests	10 mb
clearAfterDays	Days after which stored failed requests are deleted in case of retry failure	7 days
enableExperiment	Enables or disables the experiment feature within the service	false
experimentFetchedCb	A callback function that is triggered when experiment data is fetched	undefined
experimentRefetchIntervalMin	The interval, in minutes, at which the experiment data is refetched	undefined

int maxBatchSize = 100, int maxDelayMins = 30, int maxCacheSizeMb = 10, int clearAfterDays = 7

NOTE: Token is the percept workspace token associated with your app.

3. Set user

After successfully initializing the SDK, On login set current User using the following function.

percept.setUser(userId: "userId",userProperties: {UserProperty.name:"TestUser"}, additionalProperties: {"isVerifiedAccount": true})

4. Set currrent user properties

use setCurrentUserProperties method to set properties on the user profile created by setUser

// first call this method
await percept.setUser(userId: 'U1');

// sets user `deviceToken` and `isPaidUser` property to true
percept.setCurrentUserProperties(userProperties: {UserProperty.deviceToken:"token"}, additionalProperties: {"isPaidUser": true})

UserProperties can only have keys present in the UserProperty enum which are as follows.

User Property Name	Description
userId	UserId associated with the user
name	name of the user
phone	Phone number associated with the user
email	Email ID associated with the user
deviceToken	FCM token for the device

To get your firebase token you can use:

FirebaseMessaging.instance.getToken()

or

FirebaseMessaging.instance.onTokenRefresh.listen((token) => { });

5. Engage

Integration with Firebase Messaging: To streamline push notification functionality and accurately monitor their impact on attribution.

1. Capture when app session is initiated from terminated state by interacting with push notification.

// Get any messages which caused the application to open from a terminated state.
RemoteMessage? initialMessage = await FirebaseMessaging.instance.getInitialMessage();
   if (initialMessage != null) {
      _percept.trackPNTerminated(initialMessage.toMap());
   }

2. Capture when app session is resumed from background state by interacting with push notification.

// Get any messages which caused the application to open from a terminated state.
FirebaseMessaging.onMessageOpenedApp.listen(
   (message) => _percept.trackPNBackground(message.toMap()),
);

3. Capture when the app was in foreground and the push notification was received.

// Get any messages which were received when the app was in foreground.
FirebaseMessaging.onMessage.listen(
   (message) => _percept.trackPNForeground(message.toMap()),
);

4. Notifying SDK when notification received in terminated state for better attribution

Register the handler before calling runApp. Details for background fcm message handling-> https://firebase.google.com/docs/cloud-messaging/flutter/receive#background_messages

import 'package:percept_flutter/constants.dart';
import 'package:percept_flutter/utils/comm_helpers.dart';

@pragma('vm:entry-point')
Future<void> bgMessageHandler(RemoteMessage message) async {
  CapturePerceptCommRequest(
      PerceptCommunicationState.received, message.toMap(), PERCEPT_TEST_KEY);
}

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(options: DefaultOptions.currentPlatform);
  FirebaseMessaging.onBackgroundMessage(bgMessageHandler);
  runApp(MyApp());
}

This property will be tracked by pi_pn_attribution property in every subsequently tracked event.

pi_pn_attribution	Description
terminated	Interaction with pn initiated current app session from terminated state
background	Interaction with pn resumed current app session from background state
foreground	Notification was received when the app was in foreground state
none	Current session is not attributed to any pn

Along with pi_pn_attribution property following properties are tracked:

Property_name	Description
pi_pn_targetUrl	TargetUrl in the notification payload
pi_pn_campaignId	CampaignId associated with the notificaiton
pi_pn_campaignName	CampaignName associated with the notificaiton
pi_pn_campaignSource	CampaignSource associated with the notificaiton

Note: It is essential to have Firebase Messaging implemented to enable support for these properties.

6. Send Event

You can capture event using the following function. Percept automatically generates a unique ID and stores it in local storage or a cookie.

// Track only event-name
percept.capture('Referral Banner Click');

// Track event-name with property
percept.capture('Screen View', {'screenName': 'Homepage'});

// Track handled errors
percept.captureError(error, stackTrace);

After initializing the library, Percept will automatically track some properties by default

7. Set Global Properties

Set global properties which will be passed with all subsequent events

percept.setGlobalProperties({'global-property-key', 'value'});

8. Get all global properties

Get all global properties

percept.getGlobalProperties();

9. Clear

Call clear function on logout to delete all user related information

percept.clear()

Events auto tracked by sdk

event name	parameter key to control	description
App Opened	autoCaptureAppLifecycleEvents	Triggered when percept sdk is initialized
App Active	autoCaptureAppLifecycleEvents	Triggered when app comes to foreground
App Backgrounded	autoCaptureAppLifecycleEvents	Triggered when app goes to background
Application Installed	autoCaptureAppLifecycleEvents	Triggered when app is installed for the first time
Application Updated	autoCaptureAppLifecycleEvents	Triggered when app is updated

Properties tracked by sdk

Property name	Description
pi_app_name	Application name
pi_app_version	Human friendly app version like "2.3.7"
pi_app_build	Build number like "2.3.7" or "237"
pi_os_name	Operating system name like iOS or Android
pi_os_version	Operating system version "7.1.3"
pi_sdk_type	PI sdk type such as Flutter or Native
pi_sdk_version	PI sdk version
pi_pn_attribution	Tracks if current session is attributed to PN Interaction

Along with other platform specific device info as follows:

IOS:

Property name	Description
pi_systemName	The name of the current operating system
pi_systemVersion	The current operating system version
pi_model	Device model
pi_isPhysicalDevice	false if the application is running in a simulator, true otherwise

Android:

Property name	Description
pi_brand	The consumer-visible brand with which the product/hardware will be associated
pi_device	The name of the industrial design
pi_hardware	The name of the hardware (from the kernel command line or /proc)
pi_manufacturer	The manufacturer of the product/hardware
pi_model	The end-user-visible name for the end product
pi_product	The name of the overall product
pi_isPhysicalDevice	false if the application is running in an emulator, true otherwise
pi_systemFeatures	Describes what features are available on the current device

Handling Experiments

1. Enabling Experiments

To enable experiment tracking, set the enableExperiment option to true in the initOptions. You can also specify a callback function to handle the experiment data when it is fetched.

final initOptions = InitOptions(
   enableExperiment: true,
   experimentFetchedCb: (data) {
      final experimentData = data['experimentData'];
      final experimentUserType = data['experimentUserType'];
      final isExperimentDataResolved = data['isExperimentDataResolved'];

      if (isExperimentDataResolved) {
         print('Experiment data fetched: $experimentData');
      } else {
         print('Experiment data could not be resolved.');
      }
   },
   experimentRefetchIntervalMin: 10, // Refetch experiment data every 10 minutes
);

Percept('Your Project Token', initOptions);

Note: The experimentRefetchIntervalMin option sets the interval in minutes for automatically refetching experiment data. The interval must be at least 5 minutes. If a value less than 5 is provided, it will be automatically set to 5 minutes and a warning will be logged.

2. Fetching Experiment Data

You can fetch experiment data at any time using the getExperiment method. This method returns a Future that resolves to the variant data for the specified experiment.

final experimentName = 'example-experiment';
final variant = await percept.getExperiment(experimentName);

if (variant) {
  print('User is in variant: $variant');
} else {
  print('No variant data available');
}

3. Refetching Experiment Data

If you have set the experimentRefetchIntervalMs option, the SDK will automatically refetch the experiment data at the specified interval. You can also manually refetch the experiment data using the refetchExperiment method.

await percept.refetchExperiment();

4. Getting All Active Experiments

You can get all active experiments and their variants using the getAllActiveExperiments method.

final activeExperiments = await percept.getAllActiveExperiments();
print('Active experiments:', activeExperiments);

5. Getting Experiment User Type

You can get the user type for experiments using the getExperimentUserType method.

final userType = await percept.getExperimentUserType();
print('Experiment user type:', userType);

Support

If you have any questions, issues, or need assistance with Percept, here are the available support channels:

• GitHub Issues: Project Issues

Please feel free to reach out to us with any concerns or inquiries. We'll do our best to assist you and provide timely support.