login.js

// Disclaimer: not actual code
// actions/login.js
import authService from "services/authService"
import {getLoginInfo} from "selectors/login"

export function login() {
  return function thunk(dispatch, getState) {
    const data = getLoginInfo(getState());
    if (!data.username) {
      notifications.show({message: "Please enter an email"})
    }
    dispatch({type: "LOGIN_LOADING", isLoading: true});
    await authService.login(data);
    dispatch({type: "LOGIN_LOADING", isLoading: false});
  }
}