1 import { Injectable } from '@angular/core'
2 import { Observable } from 'rxjs/Observable'
3 import { HttpErrorResponse } from '@angular/common/http'
5 import { Utils } from '../utils'
6 import { ResultList } from '../../../../../shared'
9 export class RestExtractor {
15 applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> {
16 const data: T[] = result.data
17 const newData: T[] = []
19 data.forEach(d => newData.push(fun.call(this, d, additionalArgs)))
27 convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> {
28 return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ])
31 convertDateToHuman (target: object, fieldsToConvert: string[]) {
33 fieldsToConvert.forEach(field => {
34 source[field] = Utils.dateToHuman(target[field])
37 return Object.assign(target, source)
40 handleError (err: HttpErrorResponse) {
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 // A server-side error occurred.
49 // TODO: remove when angular/angular#19477 (comment) is fixed
50 let body = JSON.parse(err.error)
53 const errors = body.errors
54 const error = errors[Object.keys(errors)[0]]
55 errorMessage = error.msg // Take the message of the first error
56 } else if (body.error) {
57 errorMessage = body.error
60 errorMessage = errorMessage ? errorMessage : 'Unknown error.'
61 console.error(`Backend returned code ${err.status}, body was: ${errorMessage}`)
67 message: errorMessage,
73 errorObj.status = err.status
74 errorObj.body = err.error
77 return Observable.throw(errorObj)