openecomp-ui/src/nfvo-components/loader/LoaderReducer.js

   1 /*
   2  * Copyright © 2016-2017 European Support Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 import { actionTypes } from './LoaderConstants.js';
  17
  18 export default (
  19     state = { fetchingRequests: 0, currentlyFetching: [], isLoading: false },
  20     action
  21 ) => {
  22     let fetchingRequests = state.fetchingRequests;
  23     let newArray;
  24     switch (action.type) {
  25         case actionTypes.SEND_REQUEST:
  26             fetchingRequests++;
  27             newArray = state.currentlyFetching.slice();
  28             newArray.splice(0, 0, action.url);
  29             if (DEBUG) {
  30                 console.log('Loader SEND REQUEST url: ' + action.url);
  31                 console.log(
  32                     'Loader SEND REQUEST number of fetching requests: ' +
  33                         fetchingRequests
  34                 );
  35             }
  36             return {
  37                 fetchingRequests: fetchingRequests,
  38                 currentlyFetching: newArray,
  39                 isLoading: true
  40             };
  41         case actionTypes.RECEIVE_RESPONSE:
  42             fetchingRequests--;
  43
  44             newArray = state.currentlyFetching.filter(item => {
  45                 return item !== action.url;
  46             });
  47             if (DEBUG) {
  48                 console.log('Loader RECEIVE_RESPONSE url: ' + action.url);
  49                 console.log(
  50                     'Loader RECEIVE_RESPONSE: number of fetching requests: ' +
  51                         fetchingRequests
  52                 );
  53             }
  54             return {
  55                 currentlyFetching: newArray,
  56                 fetchingRequests: fetchingRequests,
  57                 isLoading: fetchingRequests !== 0
  58             };
  59         case actionTypes.SHOW:
  60             return { isLoading: true };
  61         case actionTypes.HIDE:
  62             return { isLoading: false };
  63         default:
  64             return state;
  65     }
  66 };