rees46_sdk

Flutter plugin for the REES46 personalization platform — a thin bridge over the native Android and iOS SDKs. Storage, sessions, identity and push delivery happen natively; Dart only routes calls to the right shop instance.

Add the package

flutter pub add rees46_sdk

Everything is exported from a single import:

import 'package:rees46_sdk/rees46_sdk.dart';

The native dependencies come with it — com.github.rees46:android-sdk from JitPack and the REES46 pod from CocoaPods trunk.

Android

The plugin brings its own Gradle settings; the only value your app must agree on is minSdk 24. Current Flutter versions already default to it, so a freshly generated project needs no changes — set it only if you hardcoded something lower:

android {
    defaultConfig {
        minSdk = 24
    }
}

Your app's Java version does not have to match the plugin's — compileOptions and jvmTarget only govern the module they are declared in.

If your android/settings.gradle.kts centralizes repositories (RepositoriesMode.FAIL_ON_PROJECT_REPOS / PREFER_SETTINGS), add JitPack there — otherwise the native SDK cannot be resolved:

maven(url = "https://jitpack.io")

iOS

Nothing to add: the plugin's podspec pulls the REES46 pod and declares the iOS 13.0 minimum itself, pod install runs as part of flutter run, and the plugin registers its own application delegate — your AppDelegate stays untouched.

Initialize

Initialize once, as early as possible — typically in main(), before runApp:

import 'package:flutter/widgets.dart';
import 'package:rees46_sdk/rees46_sdk.dart';

late final PersonalizationSdk sdk;

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  sdk = REES46.initialize(
    const REES46Config(shopId: 'YOUR_SHOP_ID'),
  );

  runApp(const MyApp());
}

REES46 is the entry point. REES46.initialize returns the handle synchronously and starts native initialization in the background; calls issued right after are queued natively until the session is ready, so the handle is usable straight away. A broken setup surfaces as a PlatformException on the first call you make with it (bad_args for an empty shopId, init_failed if native init threw).

shopId is the only required field:

Field	Default	Notes
shopId	— (required)	Your REES46 shop key
apiDomain	api.rees46.ru	API host
stream	android / ios	Traffic stream label; defaults to the current platform
autoSendPushToken	true	Fetches and sends the push token during init
needReInitialization	false	Forces a fresh session / device id

Push delivery needs platform setup of its own — a Firebase config on Android, the Push Notifications capability on iOS. Without it initialization still succeeds; there is simply no token to send.

Keep one place that owns the handle, so no widget re-initializes:

class REES46Service {
  static const _shopId = 'YOUR_SHOP_ID';

  static PersonalizationSdk get sdk => REES46.isInitialized(_shopId)
      ? REES46.getInstance(_shopId)
      : REES46.initialize(const REES46Config(shopId: _shopId));
}

Check that it worked

final sid = await sdk.getSid();   // session id
final did = await sdk.getDid();   // device id issued by REES46

A non-empty did means the native SDK completed its handshake with the API.

Several shops in one app

One app can run several shops at once — regional storefronts, super-app tenants. Each gets its own native instance with isolated storage, session and did.

// Registered now, initialized on first use.
REES46.registerShops(const [
  REES46Config(shopId: 'shop-a'),
  REES46Config(shopId: 'shop-b'),
]);                                 // pass eagerInit: true to initialize up front

final shopA = REES46.getInstance('shop-a');

Address instances explicitly once more than one is registered: getInstance() without an id resolves only while exactly one shop is registered, and throws AmbiguousShopException otherwise (UnknownShopIdException for an id that was never registered).

Track events

Standard events live in the tracking namespace of the handle:

await sdk.tracking.productView('sku-1');

Each method returns a Future<void> that completes once the native SDK has the API's answer; a rejected request throws a PlatformException (track_failed, or track_event_failed / track_purchase_failed for custom events and orders). Awaiting is optional — fire-and-forget from UI code is fine.

With several shops the namespace follows the instance:

await REES46.getInstance('shop-b').tracking.productView('sku-1');

Catalog

// Product page opened.
await sdk.tracking.productView('sku-1');

// Category listing opened.
await sdk.tracking.categoryView('boots');

// The user searched. Pass `results` when your app runs the search itself and
// knows the ids it showed.
await sdk.tracking.search('winter boots', results: ['sku-1', 'sku-2']);

Cart

// One product added.
await sdk.tracking.addToCart(
  const TrackingItem(id: 'sku-1', quantity: 2, price: 49.9, fashionSize: '42'),
);

// The cart as it looks after a change — replaces the stored contents.
await sdk.tracking.syncCart(const [
  TrackingItem(id: 'sku-1', quantity: 2, price: 49.9),
  TrackingItem(id: 'sku-2'), // quantity defaults to 1
]);

// One product removed.
await sdk.tracking.removeFromCart('sku-1');

TrackingItem needs only an id; quantity defaults to 1, price and fashionSize are optional.

Favorites

await sdk.tracking.addToFavorites('sku-1');

await sdk.tracking.syncFavorites(const ['sku-1', 'sku-2']);

await sdk.tracking.removeFromFavorites('sku-1');

An empty list is how an emptied cart or wishlist is reported: items goes on the wire as [] alongside full_cart / full_wish, which is what the native SDKs send. Removing a single product is still removeFromCart / removeFromFavorites.

Stories

Only needed when you render stories yourself — the built-in stories view tracks its own views and taps.

await sdk.tracking.storyView(
  storyId: '4321',
  slideId: '2',
  code: 'main_stories',
);

await sdk.tracking.storyClick(
  storyId: '4321',
  slideId: '2',
  code: 'main_stories',
);

code is the stories block; omit it and the native SDK uses the block it loaded last. A tracked story also becomes the source of the events that follow it — the same rule as setSource.

Purchase

await sdk.tracking.purchase(
  orderId: 'order-1024',
  orderPrice: 149.8,
  items: const [
    PurchaseLineItem(id: 'sku-1', amount: 2, price: 49.9, fashionSize: '42'),
    PurchaseLineItem(id: 'sku-2', amount: 1, price: 50.0),
  ],
);

Those three are required; everything else is optional:

await sdk.tracking.purchase(
  orderId: 'order-1024',
  orderPrice: 149.8,
  items: const [PurchaseLineItem(id: 'sku-1', amount: 1, price: 149.8)],
  deliveryType: 'courier',
  deliveryAddress: 'Tverskaya 1, Moscow',
  paymentType: 'card',
  isTaxFree: false,
  isGiftPackage: true,
  promocode: 'WINTER20',
  orderCash: 100.0,
  orderBonuses: 49.8,
  orderDelivery: 5.0,
  orderDiscount: 20.0,
  channel: 'mobile_app',
  custom: const {'store_id': 'msk-01'},
  recommendedSource: const {'from': 'dynamic', 'code': 'main_page_block'},
  stream: 'flutter',
  segment: 'a',
);

custom goes on the wire under custom; keys that collide with the order's own fields (order_id, items, event, shop_id, …) are rejected natively.

Custom event

await sdk.tracking.custom(
  'subscribed_to_newsletter',
  category: 'account',
  label: 'footer_form',
  value: 1,
  time: DateTime.now().millisecondsSinceEpoch ~/ 1000, // UNIX seconds
  customFields: const {'plan': 'weekly'},
);

customFields is the free-form part: its entries are sent at the top level and duplicated under payload. The SDK's own keys are reserved and rejected — event, time, category, label, value, source, payload, from, code, stream, shop_id, did, sid, seance, segment.

Attribution

Events can carry the campaign the user arrived from — a bulk mobile push, a chain. Both values come from the link that opened the app, which carries them as recommended_by and recommended_code:

myshop://product/sku-1?recommended_by=bulk&recommended_code=jkIWdXSRfwVyK

A campaign brings the user in and then colours everything they do next, so store it once when you handle the link:

await sdk.tracking.setSource(
  const TrackingSource(type: TrackingSourceType.bulk, code: 'jkIWdXSRfwVyK'),
);

// Carries recommended_by=bulk without being told to.
await sdk.tracking.productView('sku-1');

The stored source lives natively per shop, survives restarts, and is kept for 48 hours or until it is replaced.

To attribute a single event instead of everything that follows, pass source per call — productView, addToCart and addToFavorites accept it:

await sdk.tracking.addToCart(
  const TrackingItem(id: 'sku-1', quantity: 1),
  source: const TrackingSource(type: TrackingSourceType.chain, code: 'welcome_2'),
);

A per-call source wins over the stored one, and an order is attributed by the recommendedSource of the purchase call itself.

TrackingSourceType	Wire value	Set by
dynamicBlock	dynamic	Dynamic recommender block
chain	chain	Recommendation chain
bulk	bulk	Bulk mailing
transactional	transactional	Transactional mailing
instantSearch	instant_search	Search suggestions
fullSearch	full_search	Full search results page
stories	stories	Stories block
webPushDigest	web_push_digest	Web push digest

License

MIT — see LICENSE.