feat(nc): implement unregister nano contract saga effect

src/actions.js

@@ -149,6 +149,12 @@ export const types = {
   NANOCONTRACT_HISTORY_SUCCESS: 'NANOCONTRACT_HISTORY_SUCCESS',
   /* It indicates a Nano Contract history failed to load. */
   NANOCONTRACT_HISTORY_FAILURE: 'NANOCONTRACT_HISTORY_FAILURE',
+  /* It initiates an unregistration process of a Nano Contract. */
+  NANOCONTRACT_UNREGISTER_REQUEST: 'NANOCONTRACT_UNREGISTER_REQUEST',
+  /* It initiates an unregistration process is complete. */
+  NANOCONTRACT_UNREGISTER_SUCCESS: 'NANOCONTRACT_UNREGISTER_SUCCESS',
+  /* It initiates a process to change the address on registered Nano Contract. */
+  NANOCONTRACT_ADDRESS_CHANGE_REQUEST: 'NANOCONTRACT_ADDRESS_CHANGE_REQUEST',
 };
 
 export const featureToggleInitialized = () => ({
@@ -1055,3 +1061,37 @@ export const nanoContractHistoryFailure = (payload) => ({
   type: types.NANOCONTRACT_HISTORY_FAILURE,
   payload,
 });
+
+/**
+ * Request unregistration of a Nano Contract by its key.
+ * @param {{
+ *   ncId: string,
+ * }} Nano Contract ID to unregister.
+ */
+export const nanoContractUnregisterRequest = (unregisterRequest) => ({
+  type: types.NANOCONTRACT_UNREGISTER_REQUEST,
+  payload: unregisterRequest,
+});
+
+/**
+ * Unregistration of a Nano Contract has finished with success.
+ * @param {{
+ *   ncId: string,
+ * }} Nano Contract ID unregistered.
+ */
+export const nanoContractUnregisterSuccess = (unregistered) => ({
+  type: types.NANOCONTRACT_UNREGISTER_SUCCESS,
+  payload: unregistered,
+});
+
+/**
+ * Request a change on the Nano Contract registered.
+ * @param {{
+ *   newAddress: string;
+ *   oldNc: Object;
+ * }} changeAddressRequest
+ */
+export const nanoContractAddressChangeRequest = (changeAddressRequest) => ({
+  type: types.NANOCONTRACT_ADDRESS_CHANGE_REQUEST,
+  payload: changeAddressRequest,
+});

src/reducers/reducer.js

@@ -477,6 +477,8 @@ export const reducer = (state = initialState, action) => {
       return onNanoContractHistoryFailure(state, action);
     case types.NANOCONTRACT_HISTORY_SUCCESS:
       return onNanoContractHistorySuccess(state, action);
+    case types.NANOCONTRACT_UNREGISTER_SUCCESS:
+      return onNanoContractUnregisterSuccess(state, action);
     default:
       return state;
   }
@@ -1329,6 +1331,37 @@ export const onNanoContractRegisterSuccess = (state, { payload }) => ({
   },
 });
 
+/**
+ * @param {Object} state
+ * @param {{
+ *   payload: {
+ *     ncId: string,
+ *   }
+  * }} action
+ */
+export const onNanoContractUnregisterSuccess = (state, { payload }) => {
+  const { ncId } = payload;
+
+  const newRegisteredContracts = { ...state.nanoContract.registered, };
+  delete newRegisteredContracts[ncId];
+
+  const newContractsHistory = { ...state.nanoContract.history };
+  delete newContractsHistory[ncId];
+
+  const newContractsHistoryMeta = { ...state.nanoContract.historyMeta };
+  delete newContractsHistoryMeta[ncId];
+
+  return ({
+    ...state,
+    nanoContract: {
+      ...state.nanoContract,
+      registered: newRegisteredContracts,
+      history: newContractsHistory,
+      historyMeta: newContractsHistoryMeta,
+    },
+  });
+};
+
 /**
  * @param {Object} state
  * @param {{

src/sagas/nanoContract.js

@@ -24,6 +24,7 @@ import {
   nanoContractHistorySuccess,
   nanoContractRegisterFailure,
   nanoContractRegisterSuccess,
+  nanoContractUnregisterSuccess,
   onExceptionCaptured,
   types,
 } from '../actions';
@@ -254,9 +255,36 @@ export function* requestHistoryNanoContract({ payload }) {
   }
 }
 
+/**
+ * Process Nano Contract unregister request.
+ * @param {{
+ *   payload: {
+ *     ncId: string;
+ *   }
+ * }} action with request payload.
+ */
+export function* unregisterNanoContract({ payload }) {
+  const { ncId } = payload;
+
+  const wallet = yield select((state) => state.wallet);
+  if (!wallet.isReady()) {
+    log.debug('Fail unregistering Nano Contract because wallet is not ready yet.');
+    // This will show user an error modal with the option to send the error to sentry.
+    yield put(onExceptionCaptured(new Error(failureMessage.walletNotReadyError), true));
+    return;
+  }
+
+  yield call(wallet.storage.unregisterNanoContract.bind(wallet.storage), ncId);
+
+  log.debug(`Success unregistering Nano Contract. ncId = ${ncId}`);
+  // emit action NANOCONTRACT_REGISTER_SUCCESS
+  yield put(nanoContractUnregisterSuccess({ ncId }));
+}
+
 export function* saga() {
   yield all([
     takeEvery(types.NANOCONTRACT_REGISTER_REQUEST, registerNanoContract),
     takeEvery(types.NANOCONTRACT_HISTORY_REQUEST, requestHistoryNanoContract),
+    takeEvery(types.NANOCONTRACT_UNREGISTER_REQUEST, unregisterNanoContract),
   ]);
 }