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1 | import { HttpErrorResponse } from '@angular/common/http' | |
2 | import { Injectable } from '@angular/core' | |
3 | import { dateToHuman } from '@app/shared/misc/utils' | |
4 | import { Observable } from 'rxjs/Observable' | |
5 | import { ResultList } from '../../../../../shared' | |
6 | ||
7 | @Injectable() | |
8 | export class RestExtractor { | |
9 | ||
10 | extractDataBool () { | |
11 | return true | |
12 | } | |
13 | ||
14 | applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> { | |
15 | const data: T[] = result.data | |
16 | const newData: T[] = [] | |
17 | ||
18 | data.forEach(d => newData.push(fun.apply(this, [ d ].concat(additionalArgs)))) | |
19 | ||
20 | return { | |
21 | total: result.total, | |
22 | data: newData | |
23 | } | |
24 | } | |
25 | ||
26 | convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> { | |
27 | return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ]) | |
28 | } | |
29 | ||
30 | convertDateToHuman (target: object, fieldsToConvert: string[]) { | |
31 | fieldsToConvert.forEach(field => target[field] = dateToHuman(target[field])) | |
32 | ||
33 | return target | |
34 | } | |
35 | ||
36 | handleError (err: HttpErrorResponse) { | |
37 | let errorMessage | |
38 | ||
39 | if (err.error instanceof Error) { | |
40 | // A client-side or network error occurred. Handle it accordingly. | |
41 | errorMessage = err.error.message | |
42 | console.error('An error occurred:', errorMessage) | |
43 | } else if (err.status !== undefined) { | |
44 | // A server-side error occurred. | |
45 | if (err.error && err.error.errors) { | |
46 | const errors = err.error.errors | |
47 | const errorsArray: string[] = [] | |
48 | ||
49 | Object.keys(errors).forEach(key => { | |
50 | errorsArray.push(errors[key].msg) | |
51 | }) | |
52 | ||
53 | errorMessage = errorsArray.join('. ') | |
54 | } else if (err.error && err.error.error) { | |
55 | errorMessage = err.error.error | |
56 | } else if (err.status === 413) { | |
57 | errorMessage = 'Request is too large for the server. Please contact you administrator if you want to increase the limit size.' | |
58 | } else if (err.status === 429) { | |
59 | const secondsLeft = err.headers.get('retry-after') | |
60 | if (secondsLeft) { | |
61 | const minutesLeft = Math.floor(parseInt(secondsLeft, 10) / 60) | |
62 | errorMessage = 'Too many attempts, please try again after ' + minutesLeft + ' minutes.' | |
63 | } else { | |
64 | errorMessage = 'Too many attempts, please try again later.' | |
65 | } | |
66 | } else if (err.status === 500) { | |
67 | errorMessage = 'Server error. Please retry later.' | |
68 | } | |
69 | ||
70 | errorMessage = errorMessage ? errorMessage : 'Unknown error.' | |
71 | console.error(`Backend returned code ${err.status}, errorMessage is: ${errorMessage}`) | |
72 | } else { | |
73 | errorMessage = err | |
74 | } | |
75 | ||
76 | const errorObj = { | |
77 | message: errorMessage, | |
78 | status: undefined, | |
79 | body: undefined | |
80 | } | |
81 | ||
82 | if (err.status) { | |
83 | errorObj.status = err.status | |
84 | errorObj.body = err.error | |
85 | } | |
86 | ||
87 | return Observable.throw(errorObj) | |
88 | } | |
89 | } |