caremyway-client/src/sagas/user.sagas.js

import { effects } from "redux-saga";
import { setSelfUserToken } from "../actions/auth/reducer.actions";
import {
  isSendingUserRequest,
  setUserRequestError,
  setUserRequestSuccess,
  clearUserRequestError,
  clearUserRequestSuccess,
  setSelfUser
} from "../actions/user/reducer.actions";
import { getSelfUser } from "../api/user.api";

function* getSelfUserCall() {
  yield effects.put(isSendingUserRequest(true));
  try {
    const wasSuccessful = yield effects.call(getSelfUser);
    yield effects.put(setUserRequestSuccess(wasSuccessful));
    yield effects.put(clearUserRequestError());
    // Check if the user exists, if yes set the user, otherwise force logout
    if (wasSuccessful.results && wasSuccessful.results.length) {
      yield effects.put(setSelfUser(wasSuccessful.results[0]));
    } else {
      yield effects.put(setSelfUserToken(""));
      yield effects.put(setSelfUser({}));
    }
    return wasSuccessful;
  } catch (exception) {
    yield effects.put(setUserRequestError(exception));
    return false;
  } finally {
    yield effects.put(isSendingUserRequest(false));
  }
}

export function* getSelfUserFlow(request) {
  yield effects.put(clearUserRequestSuccess());
  yield effects.put(clearUserRequestError());
  const wasSuccessful = yield effects.call(getSelfUserCall);
  if (!wasSuccessful) {
    yield effects.put(setSelfUserToken(""));
    yield effects.put(setSelfUser({}));
  }
}