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1 | import { Injectable } from '@angular/core' | |
2 | import { Observable } from 'rxjs/Observable' | |
3 | import { HttpErrorResponse } from '@angular/common/http' | |
4 | ||
5 | import { Utils } from '../utils' | |
6 | import { ResultList } from '../../../../../shared' | |
7 | ||
8 | @Injectable() | |
9 | export class RestExtractor { | |
10 | ||
11 | extractDataBool () { | |
12 | return true | |
13 | } | |
14 | ||
15 | applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> { | |
16 | const data: T[] = result.data | |
17 | const newData: T[] = [] | |
18 | ||
19 | data.forEach(d => newData.push(fun.call(this, d, additionalArgs))) | |
20 | ||
21 | return { | |
22 | total: result.total, | |
23 | data: newData | |
24 | } | |
25 | } | |
26 | ||
27 | convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> { | |
28 | return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ]) | |
29 | } | |
30 | ||
31 | convertDateToHuman (target: object, fieldsToConvert: string[]) { | |
32 | const source = {} | |
33 | fieldsToConvert.forEach(field => { | |
34 | source[field] = Utils.dateToHuman(target[field]) | |
35 | }) | |
36 | ||
37 | return Object.assign(target, source) | |
38 | } | |
39 | ||
40 | handleError (err: HttpErrorResponse) { | |
41 | let errorMessage | |
42 | ||
43 | if (err.error instanceof Error) { | |
44 | // A client-side or network error occurred. Handle it accordingly. | |
45 | errorMessage = err.error.message | |
46 | console.error('An error occurred:', errorMessage) | |
47 | } else if (err.status !== undefined) { | |
48 | // The backend returned an unsuccessful response code. | |
49 | // The response body may contain clues as to what went wrong, | |
50 | errorMessage = err.error | |
51 | console.error(`Backend returned code ${err.status}, body was: ${errorMessage}`) | |
52 | } else { | |
53 | errorMessage = err | |
54 | } | |
55 | ||
56 | return Observable.throw(errorMessage) | |
57 | } | |
58 | } |