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import { throwError as observableThrowError } from 'rxjs'
import { Injectable } from '@angular/core'
import { Router } from '@angular/router'
import { dateToHuman } from '@app/helpers'
import { HttpStatusCode, ResultList } from '@shared/models'
@Injectable()
export class RestExtractor {
constructor (private router: Router) { }
applyToResultListData <T, A, U> (
result: ResultList<T>,
fun: (data: T, ...args: A[]) => U,
additionalArgs: A[] = []
): ResultList<U> {
const data: T[] = result.data
return {
total: result.total,
data: data.map(d => fun.apply(this, [ d, ...additionalArgs ]))
}
}
convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> {
return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ])
}
convertDateToHuman (target: any, fieldsToConvert: string[]) {
fieldsToConvert.forEach(field => {
target[field] = dateToHuman(target[field])
})
return target
}
redirectTo404IfNotFound (obj: { status: number }, type: 'video' | 'other', status = [ HttpStatusCode.NOT_FOUND_404 ]) {
if (obj?.status && status.includes(obj.status)) {
// Do not use redirectService to avoid circular dependencies
this.router.navigate([ '/404' ], { state: { type, obj }, skipLocationChange: true })
}
return observableThrowError(() => obj)
}
handleError (err: any) {
const errorMessage = this.buildErrorMessage(err)
const errorObj: { message: string, status: string, body: string } = {
message: errorMessage,
status: undefined,
body: undefined
}
if (err.status) {
errorObj.status = err.status
errorObj.body = err.error
}
return observableThrowError(() => errorObj)
}
private buildErrorMessage (err: any) {
if (err.error instanceof Error) {
// A client-side or network error occurred. Handle it accordingly.
const errorMessage = err.error.detail || err.error.title
console.error('An error occurred:', errorMessage)
return errorMessage
}
if (typeof err.error === 'string') {
return err.error
}
if (err.status !== undefined) {
const errorMessage = this.buildServerErrorMessage(err)
console.error(`Backend returned code ${err.status}, errorMessage is: ${errorMessage}`)
return errorMessage
}
console.error(err)
return err
}
private buildServerErrorMessage (err: any) {
// A server-side error occurred.
if (err.error?.errors) {
const errors = err.error.errors
return Object.keys(errors)
.map(key => errors[key].msg)
.join('. ')
}
if (err.error?.error) {
return err.error.error
}
if (err.status === HttpStatusCode.PAYLOAD_TOO_LARGE_413) {
return $localize`Media is too large for the server. Please contact you administrator if you want to increase the limit size.`
}
if (err.status === HttpStatusCode.TOO_MANY_REQUESTS_429) {
const secondsLeft = err.headers.get('retry-after')
if (secondsLeft) {
const minutesLeft = Math.floor(parseInt(secondsLeft, 10) / 60)
return $localize`Too many attempts, please try again after ${minutesLeft} minutes.`
}
return $localize`Too many attempts, please try again later.`
}
if (err.status === HttpStatusCode.INTERNAL_SERVER_ERROR_500) {
return $localize`Server error. Please retry later.`
}
return $localize`Unknown server error`
}
}
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