const INCREMENT = 'INCREMENT';
const DECREMENT = 'DECREMENT';

const counterReducer = (state = 0, action) => { //A reducer function to add/sub counter
  switch(action.type) {
    case INCREMENT:
      return state + 1;
    case DECREMENT:
      return state - 1;
    default:
      return state;
  }
};

const LOGIN = 'LOGIN';
const LOGOUT = 'LOGOUT';

const authReducer = (state = {authenticated: false}, action) => { //A reducer function to authenticate
  switch(action.type) {
    case LOGIN:
      return {
        authenticated: true
      }
    case LOGOUT:
      return {
        authenticated: false
      }
    default:
      return state;
  }
};

const rootReducer = Redux.combineReducers({ //this combines the individual reducer functions into a root function that has the keys, and then the other reducer functions assiciated with that key.
  count: counterReducer,
  auth: authReducer
});

const store = Redux.createStore(rootReducer);