1 import { throwError as observableThrowError } from 'rxjs'
2 import { Injectable } from '@angular/core'
3 import { dateToHuman } from '@app/shared/misc/utils'
4 import { ResultList } from '../../../../../shared'
5 import { Router } from '@angular/router'
8 export class RestExtractor {
10 constructor (private router: Router) {
18 applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> {
19 const data: T[] = result.data
20 const newData: T[] = []
22 data.forEach(d => newData.push(fun.apply(this, [ d ].concat(additionalArgs))))
30 convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> {
31 return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ])
34 convertDateToHuman (target: object, fieldsToConvert: string[]) {
35 fieldsToConvert.forEach(field => target[field] = dateToHuman(target[field]))
40 handleError (err: any) {
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 (typeof err.error === 'string') {
48 errorMessage = err.error
49 } else if (err.status !== undefined) {
50 // A server-side error occurred.
51 if (err.error && err.error.errors) {
52 const errors = err.error.errors
53 const errorsArray: string[] = []
55 Object.keys(errors).forEach(key => {
56 errorsArray.push(errors[key].msg)
59 errorMessage = errorsArray.join('. ')
60 } else if (err.error && err.error.error) {
61 errorMessage = err.error.error
62 } else if (err.status === 413) {
63 errorMessage = 'Request is too large for the server. Please contact you administrator if you want to increase the limit size.'
64 } else if (err.status === 429) {
65 const secondsLeft = err.headers.get('retry-after')
67 const minutesLeft = Math.floor(parseInt(secondsLeft, 10) / 60)
68 errorMessage = 'Too many attempts, please try again after ' + minutesLeft + ' minutes.'
70 errorMessage = 'Too many attempts, please try again later.'
72 } else if (err.status === 500) {
73 errorMessage = 'Server error. Please retry later.'
76 errorMessage = errorMessage ? errorMessage : 'Unknown error.'
77 console.error(`Backend returned code ${err.status}, errorMessage is: ${errorMessage}`)
83 message: errorMessage,
89 errorObj.status = err.status
90 errorObj.body = err.error
93 return observableThrowError(errorObj)
96 redirectTo404IfNotFound (obj: { status: number }, status = [ 404 ]) {
97 if (obj && obj.status && status.indexOf(obj.status) !== -1) {
98 // Do not use redirectService to avoid circular dependencies
99 this.router.navigate([ '/404' ], { skipLocationChange: true })
102 return observableThrowError(obj)