import { Map } from "immutable";

const defaultState = Map({
  show: false,
  message: "",
  type: ""
});

const handlers = {
  ADD_ALERT_ERROR: (state, action) =>
    state.merge(
      Map({
        message: action.payload.message,
        show: true,
        type: "error"
      })
    ),
  ADD_ALERT_OK: (state, action) =>
    state.merge(
      Map({
        message: action.payload.message,
        show: true,
        type: "success"
      })
    ),
  DISMISS_ALERT: state =>
    state.merge(
      Map({
        message: "",
        show: false,
        type: ""
      })
    )
};

export default (state = defaultState, action) =>
  handlers[action.type] ? handlers[action.type](state, action) : state;