fetchye-immutable-cache/es/reducer.js

Immutable cache library to use with fetchye.

/*
 * Copyright 2020 American Express Travel Related Services Company, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
import { Map as iMap, Set as iSet } from 'immutable';
import { IS_LOADING, SET_DATA, DELETE_DATA, ERROR, CLEAR_ERROR, ACTION_NAMESPACE } from 'fetchye-core'; // eslint-disable-next-line default-param-last -- the first default param value takes care of explicitly calling this function with `undefined` the second param can't be defaulted as it must be provided

export function fetchyeReducer(state = iMap({
  errors: iMap(),
  loading: iSet(),
  data: iMap()
}), action) {
  if (!action.type.startsWith(ACTION_NAMESPACE)) {
    return state;
  }

  switch (action.type) {
    case DELETE_DATA:
      return state.deleteIn(['data', action.hash]);

    case CLEAR_ERROR:
      return state.deleteIn(['errors', action.hash]);

    case ERROR:
      return state.withMutations(nextState => nextState.setIn(['errors', action.hash], action.error).deleteIn(['data', action.hash]).deleteIn(['loading', action.hash]));

    case IS_LOADING:
      return state.updateIn(['loading'], loading => loading.add(action.hash));

    case SET_DATA:
      return state.withMutations(nextState => nextState.setIn(['data', action.hash], action.value).deleteIn(['loading', action.hash]).deleteIn(['errors', action.hash]));

    default:
      return state;
  }
}
export default fetchyeReducer;