import { List, fromJS } from "immutable";

const defaultState = List();

const handlers = {
  ADD_NOTIFICATION: (state, action) =>
    state.push(
      fromJS({
        id: Math.random()
          .toString(36)
          .substring(7),
        ...action.payload
      })
    ),
  REMOVE_NOTIFICATION: (state, action) =>
    state.filter(e => e.get("id") !== action.payload.id)
};

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