+import { throwError as observableThrowError } from 'rxjs'
import { Injectable } from '@angular/core'
-import { Response } from '@angular/http'
-import { Observable } from 'rxjs/Observable'
-
-export interface ResultList {
- data: any[]
- total: number
-}
+import { dateToHuman } from '@app/shared/misc/utils'
+import { ResultList } from '../../../../../shared'
+import { Router } from '@angular/router'
+import { I18n } from '@ngx-translate/i18n-polyfill'
@Injectable()
export class RestExtractor {
- extractDataBool (res: Response) {
+ constructor (
+ private router: Router,
+ private i18n: I18n
+ ) { }
+
+ extractDataBool () {
return true
}
- extractDataList (res: Response) {
- const body = res.json()
+ applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> {
+ const data: T[] = result.data
+ const newData: T[] = []
+
+ data.forEach(d => newData.push(fun.apply(this, [ d ].concat(additionalArgs))))
- const ret: ResultList = {
- data: body.data,
- total: body.total
+ return {
+ total: result.total,
+ data: newData
}
+ }
- return ret
+ convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> {
+ return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ])
}
- extractDataGet (res: Response) {
- return res.json()
+ convertDateToHuman (target: object, fieldsToConvert: string[]) {
+ fieldsToConvert.forEach(field => target[field] = dateToHuman(target[field]))
+
+ return target
}
- handleError (res: Response) {
- let text = 'Server error: '
- text += res.text()
- let json = ''
+ handleError (err: any) {
+ let errorMessage
+
+ if (err.error instanceof Error) {
+ // A client-side or network error occurred. Handle it accordingly.
+ errorMessage = err.error.message
+ console.error('An error occurred:', errorMessage)
+ } else if (typeof err.error === 'string') {
+ errorMessage = err.error
+ } else if (err.status !== undefined) {
+ // A server-side error occurred.
+ if (err.error && err.error.errors) {
+ const errors = err.error.errors
+ const errorsArray: string[] = []
- try {
- json = res.json()
- } catch (err) {
- console.error('Cannot get JSON from response.')
+ Object.keys(errors).forEach(key => {
+ errorsArray.push(errors[key].msg)
+ })
+
+ errorMessage = errorsArray.join('. ')
+ } else if (err.error && err.error.error) {
+ errorMessage = err.error.error
+ } else if (err.status === 413) {
+ errorMessage = this.i18n(
+ 'Request is too large for the server. Please contact you administrator if you want to increase the limit size.'
+ )
+ } else if (err.status === 429) {
+ const secondsLeft = err.headers.get('retry-after')
+ if (secondsLeft) {
+ const minutesLeft = Math.floor(parseInt(secondsLeft, 10) / 60)
+ errorMessage = this.i18n('Too many attempts, please try again after {{minutesLeft}} minutes.', { minutesLeft })
+ } else {
+ errorMessage = this.i18n('Too many attempts, please try again later.')
+ }
+ } else if (err.status === 500) {
+ errorMessage = this.i18n('Server error. Please retry later.')
+ }
+
+ errorMessage = errorMessage ? errorMessage : 'Unknown error.'
+ console.error(`Backend returned code ${err.status}, errorMessage is: ${errorMessage}`)
+ } else {
+ errorMessage = err
+ }
+
+ const errorObj = {
+ message: errorMessage,
+ status: undefined,
+ body: undefined
}
- const error = {
- json,
- text
+ if (err.status) {
+ errorObj.status = err.status
+ errorObj.body = err.error
}
- console.error(error)
+ return observableThrowError(errorObj)
+ }
+
+ redirectTo404IfNotFound (obj: { status: number }, status = [ 404 ]) {
+ if (obj && obj.status && status.indexOf(obj.status) !== -1) {
+ // Do not use redirectService to avoid circular dependencies
+ this.router.navigate([ '/404' ], { skipLocationChange: true })
+ }
- return Observable.throw(error)
+ return observableThrowError(obj)
}
}