client/src/app/core/rest/rest-extractor.service.ts

   1 import { throwError as observableThrowError } from 'rxjs'
   2 import { Inject, Injectable, LOCALE_ID } from '@angular/core'
   3 import { Router } from '@angular/router'
   4 import { DateFormat, dateToHuman } from '@app/helpers'
   5 import { logger } from '@root-helpers/logger'
   6 import { HttpStatusCode, ResultList } from '@shared/models'
   7 import { HttpHeaderResponse } from '@angular/common/http'
   8
   9 @Injectable()
  10 export class RestExtractor {
  11
  12   constructor (
  13     @Inject(LOCALE_ID) private localeId: string,
  14     private router: Router
  15   ) { }
  16
  17   applyToResultListData <T, A, U> (
  18     result: ResultList<T>,
  19     fun: (data: T, ...args: A[]) => U,
  20     additionalArgs: A[] = []
  21   ): ResultList<U> {
  22     const data: T[] = result.data
  23
  24     return {
  25       total: result.total,
  26       data: data.map(d => fun.apply(this, [ d, ...additionalArgs ]))
  27     }
  28   }
  29
  30   convertResultListDateToHuman <T> (
  31     result: ResultList<T>,
  32     fieldsToConvert: string[] = [ 'createdAt' ],
  33     format?: DateFormat
  34   ): ResultList<T> {
  35     return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert, format ])
  36   }
  37
  38   convertDateToHuman (target: any, fieldsToConvert: string[], format?: DateFormat) {
  39     fieldsToConvert.forEach(field => {
  40       if (!target[field]) return
  41
  42       target[field] = dateToHuman(this.localeId, new Date(target[field]), format)
  43     })
  44
  45     return target
  46   }
  47
  48   redirectTo404IfNotFound (obj: { status: number }, type: 'video' | 'other', status = [ HttpStatusCode.NOT_FOUND_404 ]) {
  49     if (obj?.status && status.includes(obj.status)) {
  50       // Do not use redirectService to avoid circular dependencies
  51       this.router.navigate([ '/404' ], { state: { type, obj }, skipLocationChange: true })
  52     }
  53
  54     return observableThrowError(() => obj)
  55   }
  56
  57   handleError (err: any) {
  58     const errorMessage = this.buildErrorMessage(err)
  59
  60     const errorObj: { message: string, status: string, body: string, headers: HttpHeaderResponse } = {
  61       message: errorMessage,
  62       status: undefined,
  63       body: undefined,
  64       headers: err.headers
  65     }
  66
  67     if (err.status) {
  68       errorObj.status = err.status
  69       errorObj.body = err.error
  70     }
  71
  72     return observableThrowError(() => errorObj)
  73   }
  74
  75   private buildErrorMessage (err: any) {
  76     if (err.error instanceof Error) {
  77       // A client-side or network error occurred. Handle it accordingly.
  78       const errorMessage = err.error.detail || err.error.title
  79       logger.error('An error occurred:', errorMessage)
  80
  81       return errorMessage
  82     }
  83
  84     if (typeof err.error === 'string') {
  85       return err.error
  86     }
  87
  88     if (err.status !== undefined) {
  89       const errorMessage = this.buildServerErrorMessage(err)
  90       logger.error(`Backend returned code ${err.status}, errorMessage is: ${errorMessage}`)
  91
  92       return errorMessage
  93     }
  94
  95     logger.error(err)
  96     return err
  97   }
  98
  99   private buildServerErrorMessage (err: any) {
 100     // A server-side error occurred.
 101     if (err.error?.errors) {
 102       const errors = err.error.errors
 103
 104       return Object.keys(errors)
 105         .map(key => errors[key].msg)
 106         .join('. ')
 107     }
 108
 109     if (err.error?.error) {
 110       return err.error.error
 111     }
 112
 113     if (err.status === HttpStatusCode.PAYLOAD_TOO_LARGE_413) {
 114       return $localize`Media is too large for the server. Please contact you administrator if you want to increase the limit size.`
 115     }
 116
 117     if (err.status === HttpStatusCode.TOO_MANY_REQUESTS_429) {
 118       const secondsLeft = err.headers.get('retry-after')
 119
 120       if (secondsLeft) {
 121         const minutesLeft = Math.floor(parseInt(secondsLeft, 10) / 60)
 122         return $localize`Too many attempts, please try again after ${minutesLeft} minutes.`
 123       }
 124
 125       return $localize`Too many attempts, please try again later.`
 126     }
 127
 128     if (err.status === HttpStatusCode.INTERNAL_SERVER_ERROR_500) {
 129       return $localize`Server error. Please retry later.`
 130     }
 131
 132     return $localize`Unknown server error`
 133   }
 134 }