src/common/api/common-resource-service.ts

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 import * as _ from "lodash";
   6 import FilterBuilder from "./filter-builder";
   7 import OrderBuilder from "./order-builder";
   8 import { AxiosInstance } from "axios";
   9
  10 export interface Resource {
  11     uuid: string;
  12     ownerUuid: string;
  13     createdAt: string;
  14     modifiedByClientUuid: string;
  15     modifiedByUserUuid: string;
  16     modifiedAt: string;
  17     href: string;
  18     kind: string;
  19     etag: string;
  20 }
  21
  22 export interface ListArguments {
  23     limit: number;
  24     offset: number;
  25     filters?: FilterBuilder;
  26     order?: OrderBuilder;
  27     select?: string[];
  28     distinct?: boolean;
  29     count?: string;
  30 }
  31
  32 export interface ListResults<T> {
  33     kind: string;
  34     offset: number;
  35     limit: number;
  36     items: T[];
  37     itemsAvailable: number;
  38 }
  39
  40 export default class CommonResourceService<T extends Resource> {
  41
  42     static mapResponseKeys = (response: any): Promise<any> =>
  43         CommonResourceService.mapKeys(_.camelCase)(response.data)
  44
  45     static mapKeys = (mapFn: (key: string) => string) =>
  46         (value: any): any => {
  47             switch (true) {
  48                 case _.isPlainObject(value):
  49                     return Object
  50                         .keys(value)
  51                         .map(key => [key, mapFn(key)])
  52                         .reduce((newValue, [key, newKey]) => ({
  53                             ...newValue,
  54                             [newKey]: CommonResourceService.mapKeys(mapFn)(value[key])
  55                         }), {});
  56                 case _.isArray(value):
  57                     return value.map(CommonResourceService.mapKeys(mapFn));
  58                 default:
  59                     return value;
  60             }
  61         }
  62
  63     protected serverApi: AxiosInstance;
  64     protected resourceType: string;
  65
  66     constructor(serverApi: AxiosInstance, resourceType: string) {
  67         this.serverApi = serverApi;
  68         this.resourceType = '/' + resourceType + '/';
  69     }
  70
  71     create() {
  72         throw new Error("Not implemented");
  73     }
  74
  75     delete(uuid: string): Promise<T> {
  76         return this.serverApi
  77             .delete(this.resourceType + uuid)
  78             .then(CommonResourceService.mapResponseKeys);
  79     }
  80
  81     get(uuid: string) {
  82         return this.serverApi
  83             .get<T>(this.resourceType + uuid)
  84             .then(CommonResourceService.mapResponseKeys);
  85     }
  86
  87     list(args: ListArguments): Promise<ListResults<T>> {
  88         const { filters, order, ...other } = args;
  89         const params = {
  90             ...other,
  91             filters: filters ? filters.get() : undefined,
  92             order: order ? order.getOrder() : undefined
  93         };
  94         return this.serverApi
  95             .get(this.resourceType, {
  96                 params: CommonResourceService.mapKeys(_.snakeCase)(params)
  97             })
  98             .then(CommonResourceService.mapResponseKeys);
  99     }
 100
 101     update(uuid: string) {
 102         throw new Error("Not implemented");
 103     }
 104
 105 }
 106