feat: add nano contract feature toggle

src/actions.js

@@ -135,8 +135,10 @@ export const types = {
   NETWORKSETTINGS_UPDATE_INVALID: 'NETWORKSETTINGS_UPDATE_INVALID',
   /* It indicates the update request has failed. */
   NETWORKSETTINGS_UPDATE_FAILURE: 'NETWORK_SETTINGS_UPDATE_FAILURE',
-  /* It updates the redux state of network settings status */
+  /* It updates the redux state of network settings status. */
   NETWORKSETTINGS_UPDATE_READY: 'NETWORK_SETTINGS_UPDATE_READY',
+  /* It sets the availability of Nano Contract's feature toggle. */
+  NANOCONTRACT_FEATURETOGGLE_SET_AVAILABILITY: 'NANOCONTRACT_FEATURETOGGLE_SET_AVAILABILITY',
 };
 
 export const featureToggleInitialized = () => ({
@@ -975,3 +977,11 @@ export const networkSettingsUpdateInvalid = (errors) => ({
 export const networkSettingsUpdateReady = () => ({
   type: types.NETWORKSETTINGS_UPDATE_READY,
 });
+
+/**
+ * @param {boolean} payload - true if unleash enables the nano contract feature
+ */
+export const setNanoContractAvailability = (payload) => ({
+  type: types.NANOCONTRACT_FEATURETOGGLE_SET_AVAILABILITY,
+  payload,
+});

src/constants.js

@@ -158,6 +158,7 @@ export const WALLET_SERVICE_FEATURE_TOGGLE = 'wallet-service-mobile.rollout';
 export const PUSH_NOTIFICATION_FEATURE_TOGGLE = 'push-notification.rollout';
 export const WALLET_CONNECT_FEATURE_TOGGLE = 'wallet-connect-mobile.rollout';
 export const NETWORK_SETTINGS_FEATURE_TOGGLE = 'network-settings.rollout';
+export const NANO_CONTRACT_FEATURE_TOGGLE = 'nano-contract.rollout';
 
 /**
  * Default feature toggle values.
@@ -172,6 +173,7 @@ export const FEATURE_TOGGLE_DEFAULTS = {
   [PUSH_NOTIFICATION_FEATURE_TOGGLE]: false,
   [WALLET_CONNECT_FEATURE_TOGGLE]: false,
   [NETWORK_SETTINGS_FEATURE_TOGGLE]: false,
+  [NANO_CONTRACT_FEATURE_TOGGLE]: false,
 };
 
 // Project id configured in https://walletconnect.com

src/reducers/reducer.js

@@ -230,6 +230,13 @@ const initialState = {
   networkSettings: PRE_SETTINGS_MAINNET,
   networkSettingsInvalid: {},
   networkSettingsStatus: NETWORKSETTINGS_STATUS.READY,
+  nanoContract: {
+    /**
+     * @property {boolean}
+     * @description Reflects Nano Contract's unleash feature toggle value.
+     */
+    available: false,
+  },
 };
 
 export const reducer = (state = initialState, action) => {
@@ -386,6 +393,8 @@ export const reducer = (state = initialState, action) => {
       return onNetworkSettingsUpdateFailure(state);
     case types.NETWORKSETTINGS_UPDATE_INVALID:
       return onNetworkSettingsUpdateInvalid(state, action);
+    case types.NANOCONTRACT_FEATURETOGGLE_SET_AVAILABILITY:
+      return onNanoContractFeatureToggleAvailability(state, action);
     default:
       return state;
   }
@@ -1210,3 +1219,15 @@ export const onNetworkSettingsUpdateInvalid = (state, { payload }) => ({
   networkSettingsInvalid: payload,
   networkSettingsStatus: NETWORKSETTINGS_STATUS.READY,
 });
+
+/**
+ * @param {Object} state Redux state
+ * @param {{ payload: boolean }} Nano Contract unleash feature toggle value
+ */
+export const onNanoContractFeatureToggleAvailability = (state, { payload }) => ({
+  ...state,
+  nanoContract: {
+    ...state.nanoContract,
+    available: payload,
+  },
+});

src/sagas/wallet.js

@@ -36,6 +36,7 @@ import {
   DEFAULT_TOKEN,
   WALLET_SERVICE_FEATURE_TOGGLE,
   PUSH_NOTIFICATION_FEATURE_TOGGLE,
+  NANO_CONTRACT_FEATURE_TOGGLE,
 } from '../constants';
 import { STORE } from '../store';
 import {
@@ -63,6 +64,7 @@ import {
   resetWalletSuccess,
   setTokens,
   onExceptionCaptured,
+  setNanoContractAvailability,
 } from '../actions';
 import { fetchTokenData } from './tokens';
 import {
@@ -96,6 +98,16 @@ export function* isPushNotificationEnabled() {
   return pushEnabled;
 }
 
+/**
+ * Returns the value of the NANO_CONTRACT_FEATURE_TOGGLE feature flag
+ * @returns {Generator<unknown, boolean>}
+ */
+export function* isNanoContractEnabled() {
+  const nanoEnabled = yield call(checkForFeatureFlag, NANO_CONTRACT_FEATURE_TOGGLE);
+
+  return nanoEnabled;
+}
+
 /**
  * Returns a boolean indicating if we should use the wallet-service
  * @returns {Generator<unknown, boolean>}
@@ -133,9 +145,11 @@ export function* startWallet(action) {
   const uniqueDeviceId = getUniqueId();
   const useWalletService = yield call(isWalletServiceEnabled);
   const usePushNotification = yield call(isPushNotificationEnabled);
+  const useNanoContract = yield call(isNanoContractEnabled);
 
   yield put(setUseWalletService(useWalletService));
   yield put(setAvailablePushNotification(usePushNotification));
+  yield put(setNanoContractAvailability(useNanoContract));
 
   // clean storage and metadata before starting the wallet
   // this should be cleaned when stopping the wallet,