import { Injectable } from '@angular/core'
import { Router } from '@angular/router'
import { Observable } from 'rxjs/Observable'
import { Subject } from 'rxjs/Subject'
import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http'
import 'rxjs/add/operator/map'
import 'rxjs/add/operator/mergeMap'
import 'rxjs/add/observable/throw'
import { NotificationsService } from 'angular2-notifications'
import { AuthStatus } from './auth-status.model'
import { AuthUser } from './auth-user.model'
import { OAuthClientLocal, UserRole, UserRefreshToken } from '../../../../../shared'
// Do not use the barrel (dependency loop)
import { RestExtractor } from '../../shared/rest'
import { UserLogin } from '../../../../../shared/models/users/user-login.model'
import { User } from '../../shared/users/user.model'
interface UserLoginWithUsername extends UserLogin {
access_token: string
refresh_token: string
token_type: string
username: string
}
interface UserLoginWithUserInformation extends UserLogin {
access_token: string
refresh_token: string
token_type: string
username: string
id: number
role: UserRole
displayNSFW: boolean
email: string
}
@Injectable()
export class AuthService {
private static BASE_CLIENT_URL = API_URL + '/api/v1/oauth-clients/local'
private static BASE_TOKEN_URL = API_URL + '/api/v1/users/token'
private static BASE_USER_INFORMATION_URL = API_URL + '/api/v1/users/me'
loginChangedSource: Observable<AuthStatus>
private clientId: string
private clientSecret: string
private loginChanged: Subject<AuthStatus>
private user: AuthUser = null
constructor (
private http: HttpClient,
private notificationsService: NotificationsService,
private restExtractor: RestExtractor,
private router: Router
) {
this.loginChanged = new Subject<AuthStatus>()
this.loginChangedSource = this.loginChanged.asObservable()
// Return null if there is nothing to load
this.user = AuthUser.load()
}
loadClientCredentials () {
// Fetch the client_id/client_secret
// FIXME: save in local storage?
this.http.get<OAuthClientLocal>(AuthService.BASE_CLIENT_URL)
.catch(res => this.restExtractor.handleError(res))
.subscribe(
res => {
this.clientId = res.client_id
this.clientSecret = res.client_secret
console.log('Client credentials loaded.')
},
error => {
let errorMessage = `Cannot retrieve OAuth Client credentials: ${error.text}. \n`
errorMessage += 'Ensure you have correctly configured PeerTube (config/ directory), in particular the "webserver" section.'
// We put a bigger timeout
// This is an important message
this.notificationsService.error('Error', errorMessage, { timeOut: 7000 })
}
)
}
getRefreshToken () {
if (this.user === null) return null
return this.user.getRefreshToken()
}
getRequestHeaderValue () {
const accessToken = this.getAccessToken()
if (accessToken === null) return null
return `${this.getTokenType()} ${accessToken}`
}
getAccessToken () {
if (this.user === null) return null
return this.user.getAccessToken()
}
getTokenType () {
if (this.user === null) return null
return this.user.getTokenType()
}
getUser () {
return this.user
}
isAdmin () {
if (this.user === null) return false
return this.user.isAdmin()
}
isLoggedIn () {
return !!this.getAccessToken()
}
login (username: string, password: string) {
// Form url encoded
const body = new HttpParams().set('client_id', this.clientId)
.set('client_secret', this.clientSecret)
.set('response_type', 'code')
.set('grant_type', 'password')
.set('scope', 'upload')
.set('username', username)
.set('password', password)
const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
return this.http.post<UserLogin>(AuthService.BASE_TOKEN_URL, body, { headers })
.map(res => Object.assign(res, { username }))
.flatMap(res => this.mergeUserInformation(res))
.map(res => this.handleLogin(res))
.catch(res => this.restExtractor.handleError(res))
}
logout () {
// TODO: make an HTTP request to revoke the tokens
this.user = null
AuthUser.flush()
this.setStatus(AuthStatus.LoggedOut)
}
refreshAccessToken () {
console.log('Refreshing token...')
const refreshToken = this.getRefreshToken()
// Form url encoded
const body = new HttpParams().set('refresh_token', refreshToken)
.set('client_id', this.clientId)
.set('client_secret', this.clientSecret)
.set('response_type', 'code')
.set('grant_type', 'refresh_token')
const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
return this.http.post<UserRefreshToken>(AuthService.BASE_TOKEN_URL, body, { headers })
.map(res => this.handleRefreshToken(res))
.catch(res => {
// The refresh token is invalid?
if (res.status === 400 && res.error.error === 'invalid_grant') {
console.error('Cannot refresh token -> logout...')
this.logout()
this.router.navigate(['/login'])
return Observable.throw({
error: 'You need to reconnect.'
})
}
return this.restExtractor.handleError(res)
})
}
refreshUserInformation () {
const obj = {
access_token: this.user.getAccessToken(),
refresh_token: null,
token_type: this.user.getTokenType(),
username: this.user.username
}
this.mergeUserInformation(obj)
.subscribe(
res => {
this.user.displayNSFW = res.displayNSFW
this.user.role = res.role
this.user.save()
}
)
}
private mergeUserInformation (obj: UserLoginWithUsername): Observable<UserLoginWithUserInformation> {
// User is not loaded yet, set manually auth header
const headers = new HttpHeaders().set('Authorization', `${obj.token_type} ${obj.access_token}`)
return this.http.get<User>(AuthService.BASE_USER_INFORMATION_URL, { headers })
.map(res => {
const newProperties = {
id: res.id as number,
role: res.role as UserRole,
displayNSFW: res.displayNSFW as boolean,
email: res.email as string
}
return Object.assign(obj, newProperties)
}
)
}
private handleLogin (obj: UserLoginWithUserInformation) {
const id = obj.id
const username = obj.username
const role = obj.role
const email = obj.email
const displayNSFW = obj.displayNSFW
const hashTokens = {
accessToken: obj.access_token,
tokenType: obj.token_type,
refreshToken: obj.refresh_token
}
this.user = new AuthUser({ id, username, role, displayNSFW, email }, hashTokens)
this.user.save()
this.setStatus(AuthStatus.LoggedIn)
}
private handleRefreshToken (obj: UserRefreshToken) {
this.user.refreshTokens(obj.access_token, obj.refresh_token)
this.user.save()
}
private setStatus (status: AuthStatus) {
this.loginChanged.next(status)
}
}