import { ApiResult } from 'api/...';
import {
  FooAction,
  FETCH_PENDING,
  FETCH_FULFILLED,
  FETCH_REJECTED,
} from './example.action-types.ts';

export interface State {
   data: ApiResult | null;
   //...
}

const initialState: State = {
  data: null,
  //...
};

export default (state = initialState, action: FooAction): State => {
  switch (action.type) {
    case FETCH_PENDING:
      return {
        ...state,
        //...
      };

    case FETCH_FULFILLED:
      return {
        ...state,
        data: action.payload,
      };

    case FETCH_REJECTED:
      return {
        ...state,
        //...
      };

    default:
      return state;
  }
};