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'
8 export class RestExtractor {
14 applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> {
15 const data: T[] = result.data
16 const newData: T[] = []
18 data.forEach(d => newData.push(fun.apply(this, [ d ].concat(additionalArgs))))
26 convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> {
27 return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ])
30 convertDateToHuman (target: object, fieldsToConvert: string[]) {
31 fieldsToConvert.forEach(field => target[field] = dateToHuman(target[field]))
36 handleError (err: any) {
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 (typeof err.error === 'string') {
44 errorMessage = err.error
45 } else if (err.status !== undefined) {
46 // A server-side error occurred.
47 if (err.error && err.error.errors) {
48 const errors = err.error.errors
49 const errorsArray: string[] = []
51 Object.keys(errors).forEach(key => {
52 errorsArray.push(errors[key].msg)
55 errorMessage = errorsArray.join('. ')
56 } else if (err.error && err.error.error) {
57 errorMessage = err.error.error
58 } else if (err.status === 413) {
59 errorMessage = 'Request is too large for the server. Please contact you administrator if you want to increase the limit size.'
60 } else if (err.status === 429) {
61 const secondsLeft = err.headers.get('retry-after')
63 const minutesLeft = Math.floor(parseInt(secondsLeft, 10) / 60)
64 errorMessage = 'Too many attempts, please try again after ' + minutesLeft + ' minutes.'
66 errorMessage = 'Too many attempts, please try again later.'
68 } else if (err.status === 500) {
69 errorMessage = 'Server error. Please retry later.'
72 errorMessage = errorMessage ? errorMessage : 'Unknown error.'
73 console.error(`Backend returned code ${err.status}, errorMessage is: ${errorMessage}`)
79 message: errorMessage,
85 errorObj.status = err.status
86 errorObj.body = err.error
89 return Observable.throw(errorObj)