23 files changed, 220 insertions, 113 deletions

diff --git a/client/src/app/shared/form-validators/user-validators.ts b/client/src/app/shared/form-validators/user-validators.ts
index 3262853d8..b93de75ea 100644
--- a/client/src/app/shared/form-validators/user-validators.ts
+++ b/client/src/app/shared/form-validators/user-validators.ts
@@ -61,6 +61,15 @@ export const USER_EXISTING_PASSWORD_VALIDATOR: BuildFormValidator = {
   }
 }
 
+export const USER_OTP_TOKEN_VALIDATOR: BuildFormValidator = {
+  VALIDATORS: [
+    Validators.required
+  ],
+  MESSAGES: {
+    required: $localize`OTP token is required.`
+  }
+}
+
 export const USER_PASSWORD_VALIDATOR = {
   VALIDATORS: [
     Validators.required,
diff --git a/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts b/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts
index d24a5d58d..12d503f56 100644
--- a/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts
+++ b/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts
@@ -1,6 +1,6 @@
 import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core'
 import { AuthService, HtmlRendererService, Notifier } from '@app/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
 import { logger } from '@root-helpers/logger'
@@ -29,7 +29,7 @@ export class AbuseMessageModalComponent extends FormReactive implements OnInit {
   private abuse: UserAbuse
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private htmlRenderer: HtmlRendererService,
     private auth: AuthService,
diff --git a/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts b/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts
index 2600da8da..4ad807d25 100644
--- a/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts
+++ b/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts
@@ -1,6 +1,6 @@
 import { Component, EventEmitter, OnInit, Output, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { AbuseService } from '@app/shared/shared-moderation'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
@@ -20,7 +20,7 @@ export class ModerationCommentModalComponent extends FormReactive implements OnI
   private openedModal: NgbModalRef
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private notifier: Notifier,
     private abuseService: AbuseService
diff --git a/client/src/app/shared/shared-forms/form-reactive.service.ts b/client/src/app/shared/shared-forms/form-reactive.service.ts
new file mode 100644
index 000000000..f1b7e0ef2
--- /dev/null
+++ b/client/src/app/shared/shared-forms/form-reactive.service.ts
@@ -0,0 +1,101 @@
+import { Injectable } from '@angular/core'
+import { AbstractControl, FormGroup } from '@angular/forms'
+import { wait } from '@root-helpers/utils'
+import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model'
+import { FormValidatorService } from './form-validator.service'
+
+export type FormReactiveErrors = { [ id: string ]: string | FormReactiveErrors }
+export type FormReactiveValidationMessages = {
+  [ id: string ]: { [ name: string ]: string } | FormReactiveValidationMessages
+}
+
+@Injectable()
+export class FormReactiveService {
+
+  constructor (private formValidatorService: FormValidatorService) {
+
+  }
+
+  buildForm (obj: BuildFormArgument, defaultValues: BuildFormDefaultValues = {}) {
+    const { formErrors, validationMessages, form } = this.formValidatorService.buildForm(obj, defaultValues)
+
+    form.statusChanges.subscribe(async () => {
+      // FIXME: remove when https://github.com/angular/angular/issues/41519 is fixed
+      await this.waitPendingCheck(form)
+
+      this.onStatusChanged({ form, formErrors, validationMessages })
+    })
+
+    return { form, formErrors, validationMessages }
+  }
+
+  async waitPendingCheck (form: FormGroup) {
+    if (form.status !== 'PENDING') return
+
+    // FIXME: the following line does not work: https://github.com/angular/angular/issues/41519
+    // return firstValueFrom(form.statusChanges.pipe(filter(status => status !== 'PENDING')))
+    // So we have to fallback to active wait :/
+
+    do {
+      await wait(10)
+    } while (form.status === 'PENDING')
+  }
+
+  markAllAsDirty (controlsArg: { [ key: string ]: AbstractControl }) {
+    const controls = controlsArg
+
+    for (const key of Object.keys(controls)) {
+      const control = controls[key]
+
+      if (control instanceof FormGroup) {
+        this.markAllAsDirty(control.controls)
+        continue
+      }
+
+      control.markAsDirty()
+    }
+  }
+
+  forceCheck (form: FormGroup, formErrors: any, validationMessages: FormReactiveValidationMessages) {
+    this.onStatusChanged({ form, formErrors, validationMessages, onlyDirty: false })
+  }
+
+  private onStatusChanged (options: {
+    form: FormGroup
+    formErrors: FormReactiveErrors
+    validationMessages: FormReactiveValidationMessages
+    onlyDirty?: boolean // default true
+  }) {
+    const { form, formErrors, validationMessages, onlyDirty = true } = options
+
+    for (const field of Object.keys(formErrors)) {
+      if (formErrors[field] && typeof formErrors[field] === 'object') {
+        this.onStatusChanged({
+          form: form.controls[field] as FormGroup,
+          formErrors: formErrors[field] as FormReactiveErrors,
+          validationMessages: validationMessages[field] as FormReactiveValidationMessages,
+          onlyDirty
+        })
+
+        continue
+      }
+
+      // clear previous error message (if any)
+      formErrors[field] = ''
+      const control = form.get(field)
+
+      if (!control || (onlyDirty && !control.dirty) || !control.enabled || !control.errors) continue
+
+      const staticMessages = validationMessages[field]
+      for (const key of Object.keys(control.errors)) {
+        const formErrorValue = control.errors[key]
+
+        // Try to find error message in static validation messages first
+        // Then check if the validator returns a string that is the error
+        if (staticMessages[key]) formErrors[field] += staticMessages[key] + ' '
+        else if (typeof formErrorValue === 'string') formErrors[field] += control.errors[key]
+        else throw new Error('Form error value of ' + field + ' is invalid')
+      }
+    }
+  }
+}
diff --git a/client/src/app/shared/shared-forms/form-reactive.ts b/client/src/app/shared/shared-forms/form-reactive.ts
index a19ffdd82..d1e7be802 100644
--- a/client/src/app/shared/shared-forms/form-reactive.ts
+++ b/client/src/app/shared/shared-forms/form-reactive.ts
@@ -1,16 +1,9 @@
-
-import { AbstractControl, FormGroup } from '@angular/forms'
-import { wait } from '@root-helpers/utils'
+import { FormGroup } from '@angular/forms'
 import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model'
-import { FormValidatorService } from './form-validator.service'
-
-export type FormReactiveErrors = { [ id: string ]: string | FormReactiveErrors }
-export type FormReactiveValidationMessages = {
-  [ id: string ]: { [ name: string ]: string } | FormReactiveValidationMessages
-}
+import { FormReactiveService, FormReactiveValidationMessages } from './form-reactive.service'
 
 export abstract class FormReactive {
-  protected abstract formValidatorService: FormValidatorService
+  protected abstract formReactiveService: FormReactiveService
   protected formChanged = false
 
   form: FormGroup
@@ -18,86 +11,22 @@ export abstract class FormReactive {
   validationMessages: FormReactiveValidationMessages
 
   buildForm (obj: BuildFormArgument, defaultValues: BuildFormDefaultValues = {}) {
-    const { formErrors, validationMessages, form } = this.formValidatorService.buildForm(obj, defaultValues)
+    const { formErrors, validationMessages, form } = this.formReactiveService.buildForm(obj, defaultValues)
 
     this.form = form
     this.formErrors = formErrors
     this.validationMessages = validationMessages
-
-    this.form.statusChanges.subscribe(async () => {
-      // FIXME: remove when https://github.com/angular/angular/issues/41519 is fixed
-      await this.waitPendingCheck()
-
-      this.onStatusChanged(this.form, this.formErrors, this.validationMessages)
-    })
   }
 
   protected async waitPendingCheck () {
-    if (this.form.status !== 'PENDING') return
-
-    // FIXME: the following line does not work: https://github.com/angular/angular/issues/41519
-    // return firstValueFrom(this.form.statusChanges.pipe(filter(status => status !== 'PENDING')))
-    // So we have to fallback to active wait :/
-
-    do {
-      await wait(10)
-    } while (this.form.status === 'PENDING')
+    return this.formReactiveService.waitPendingCheck(this.form)
   }
 
-  protected markAllAsDirty (controlsArg?: { [ key: string ]: AbstractControl }) {
-    const controls = controlsArg || this.form.controls
-
-    for (const key of Object.keys(controls)) {
-      const control = controls[key]
-
-      if (control instanceof FormGroup) {
-        this.markAllAsDirty(control.controls)
-        continue
-      }
-
-      control.markAsDirty()
-    }
+  protected markAllAsDirty () {
+    return this.formReactiveService.markAllAsDirty(this.form.controls)
   }
 
   protected forceCheck () {
-    this.onStatusChanged(this.form, this.formErrors, this.validationMessages, false)
-  }
-
-  private onStatusChanged (
-    form: FormGroup,
-    formErrors: FormReactiveErrors,
-    validationMessages: FormReactiveValidationMessages,
-    onlyDirty = true
-  ) {
-    for (const field of Object.keys(formErrors)) {
-      if (formErrors[field] && typeof formErrors[field] === 'object') {
-        this.onStatusChanged(
-          form.controls[field] as FormGroup,
-          formErrors[field] as FormReactiveErrors,
-          validationMessages[field] as FormReactiveValidationMessages,
-          onlyDirty
-        )
-        continue
-      }
-
-      // clear previous error message (if any)
-      formErrors[field] = ''
-      const control = form.get(field)
-
-      if (control.dirty) this.formChanged = true
-
-      if (!control || (onlyDirty && !control.dirty) || !control.enabled || !control.errors) continue
-
-      const staticMessages = validationMessages[field]
-      for (const key of Object.keys(control.errors)) {
-        const formErrorValue = control.errors[key]
-
-        // Try to find error message in static validation messages first
-        // Then check if the validator returns a string that is the error
-        if (staticMessages[key]) formErrors[field] += staticMessages[key] + ' '
-        else if (typeof formErrorValue === 'string') formErrors[field] += control.errors[key]
-        else throw new Error('Form error value of ' + field + ' is invalid')
-      }
-    }
+    return this.formReactiveService.forceCheck(this.form, this.formErrors, this.validationMessages)
   }
 }
diff --git a/client/src/app/shared/shared-forms/form-validator.service.ts b/client/src/app/shared/shared-forms/form-validator.service.ts
index f67d5bb33..897008242 100644
--- a/client/src/app/shared/shared-forms/form-validator.service.ts
+++ b/client/src/app/shared/shared-forms/form-validator.service.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core'
 import { AsyncValidatorFn, FormArray, FormBuilder, FormControl, FormGroup, ValidatorFn } from '@angular/forms'
 import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model'
-import { FormReactiveErrors, FormReactiveValidationMessages } from './form-reactive'
+import { FormReactiveErrors, FormReactiveValidationMessages } from './form-reactive.service'
 
 @Injectable()
 export class FormValidatorService {
diff --git a/client/src/app/shared/shared-forms/index.ts b/client/src/app/shared/shared-forms/index.ts
index 495785e7b..bff9862f2 100644
--- a/client/src/app/shared/shared-forms/index.ts
+++ b/client/src/app/shared/shared-forms/index.ts
@@ -1,4 +1,5 @@
 export * from './advanced-input-filter.component'
+export * from './form-reactive.service'
 export * from './form-reactive'
 export * from './form-validator.service'
 export * from './form-validator.service'
diff --git a/client/src/app/shared/shared-forms/input-text.component.ts b/client/src/app/shared/shared-forms/input-text.component.ts
index d667ed663..aa4a1cba8 100644
--- a/client/src/app/shared/shared-forms/input-text.component.ts
+++ b/client/src/app/shared/shared-forms/input-text.component.ts
@@ -1,4 +1,4 @@
-import { Component, forwardRef, Input } from '@angular/core'
+import { Component, ElementRef, forwardRef, Input, ViewChild } from '@angular/core'
 import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
 import { Notifier } from '@app/core'
 
@@ -15,6 +15,8 @@ import { Notifier } from '@app/core'
   ]
 })
 export class InputTextComponent implements ControlValueAccessor {
+  @ViewChild('input') inputElement: ElementRef
+
   @Input() inputId = Math.random().toString(11).slice(2, 8) // id cannot be left empty or undefined
   @Input() value = ''
   @Input() autocomplete = 'off'
@@ -65,4 +67,10 @@ export class InputTextComponent implements ControlValueAccessor {
   update () {
     this.propagateChange(this.value)
   }
+
+  focus () {
+    const el: HTMLElement = this.inputElement.nativeElement
+
+    el.focus({ preventScroll: true })
+  }
 }
diff --git a/client/src/app/shared/shared-forms/shared-form.module.ts b/client/src/app/shared/shared-forms/shared-form.module.ts
index 81f076db6..628affb56 100644
--- a/client/src/app/shared/shared-forms/shared-form.module.ts
+++ b/client/src/app/shared/shared-forms/shared-form.module.ts
@@ -1,4 +1,3 @@
-
 import { InputMaskModule } from 'primeng/inputmask'
 import { NgModule } from '@angular/core'
 import { FormsModule, ReactiveFormsModule } from '@angular/forms'
@@ -7,6 +6,7 @@ import { SharedGlobalIconModule } from '../shared-icons'
 import { SharedMainModule } from '../shared-main/shared-main.module'
 import { AdvancedInputFilterComponent } from './advanced-input-filter.component'
 import { DynamicFormFieldComponent } from './dynamic-form-field.component'
+import { FormReactiveService } from './form-reactive.service'
 import { FormValidatorService } from './form-validator.service'
 import { InputSwitchComponent } from './input-switch.component'
 import { InputTextComponent } from './input-text.component'
@@ -96,7 +96,8 @@ import { TimestampInputComponent } from './timestamp-input.component'
   ],
 
   providers: [
-    FormValidatorService
+    FormValidatorService,
+    FormReactiveService
   ]
 })
 export class SharedFormModule { }
diff --git a/client/src/app/shared/shared-main/auth/auth-interceptor.service.ts b/client/src/app/shared/shared-main/auth/auth-interceptor.service.ts
index e4b74f3ad..93b3a93d6 100644
--- a/client/src/app/shared/shared-main/auth/auth-interceptor.service.ts
+++ b/client/src/app/shared/shared-main/auth/auth-interceptor.service.ts
@@ -27,13 +27,16 @@ export class AuthInterceptor implements HttpInterceptor {
                .pipe(
                  catchError((err: HttpErrorResponse) => {
                    const error = err.error as PeerTubeProblemDocument
+                   const isOTPMissingError = this.authService.isOTPMissingError(err)
 
-                   if (err.status === HttpStatusCode.UNAUTHORIZED_401 && error && error.code === OAuth2ErrorCode.INVALID_TOKEN) {
-                     return this.handleTokenExpired(req, next)
-                   }
+                   if (!isOTPMissingError) {
+                     if (err.status === HttpStatusCode.UNAUTHORIZED_401 && error && error.code === OAuth2ErrorCode.INVALID_TOKEN) {
+                       return this.handleTokenExpired(req, next)
+                     }
 
-                   if (err.status === HttpStatusCode.UNAUTHORIZED_401) {
-                     return this.handleNotAuthenticated(err)
+                     if (err.status === HttpStatusCode.UNAUTHORIZED_401) {
+                       return this.handleNotAuthenticated(err)
+                     }
                    }
 
                    return observableThrowError(() => err)
diff --git a/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts b/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts
index 20be728f6..ec2fea528 100644
--- a/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts
+++ b/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts
@@ -1,5 +1,5 @@
 import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
 import { splitAndGetNotEmpty, UNIQUE_HOSTS_VALIDATOR } from '../form-validators/host-validators'
@@ -18,7 +18,7 @@ export class BatchDomainsModalComponent extends FormReactive implements OnInit {
   private openedModal: NgbModalRef
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal
   ) {
     super()
diff --git a/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts b/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts
index 78c9b3382..d587a9709 100644
--- a/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts
+++ b/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts
@@ -2,7 +2,7 @@ import { mapValues, pickBy } from 'lodash-es'
 import { Component, OnInit, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
 import { ABUSE_REASON_VALIDATOR } from '@app/shared/form-validators/abuse-validators'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { Account } from '@app/shared/shared-main'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
@@ -26,7 +26,7 @@ export class AccountReportComponent extends FormReactive implements OnInit {
   private openedModal: NgbModalRef
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private abuseService: AbuseService,
     private notifier: Notifier
diff --git a/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts b/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts
index 7c0907ce4..e35d70c8f 100644
--- a/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts
+++ b/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts
@@ -2,7 +2,7 @@ import { mapValues, pickBy } from 'lodash-es'
 import { Component, Input, OnInit, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
 import { ABUSE_REASON_VALIDATOR } from '@app/shared/form-validators/abuse-validators'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { VideoComment } from '@app/shared/shared-video-comment'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
@@ -27,7 +27,7 @@ export class CommentReportComponent extends FormReactive implements OnInit {
   private openedModal: NgbModalRef
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private abuseService: AbuseService,
     private notifier: Notifier
diff --git a/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts b/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts
index 38dd92910..16be8e0a1 100644
--- a/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts
+++ b/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts
@@ -3,7 +3,7 @@ import { Component, Input, OnInit, ViewChild } from '@angular/core'
 import { DomSanitizer } from '@angular/platform-browser'
 import { Notifier } from '@app/core'
 import { ABUSE_REASON_VALIDATOR } from '@app/shared/form-validators/abuse-validators'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
 import { abusePredefinedReasonsMap } from '@shared/core-utils/abuse'
@@ -27,7 +27,7 @@ export class VideoReportComponent extends FormReactive implements OnInit {
   private openedModal: NgbModalRef
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private abuseService: AbuseService,
     private notifier: Notifier,
diff --git a/client/src/app/shared/shared-moderation/user-ban-modal.component.ts b/client/src/app/shared/shared-moderation/user-ban-modal.component.ts
index 617408f2a..27dcf043a 100644
--- a/client/src/app/shared/shared-moderation/user-ban-modal.component.ts
+++ b/client/src/app/shared/shared-moderation/user-ban-modal.component.ts
@@ -2,7 +2,7 @@ import { forkJoin } from 'rxjs'
 import { Component, EventEmitter, OnInit, Output, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
 import { prepareIcu } from '@app/helpers'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
 import { User } from '@shared/models'
@@ -25,7 +25,7 @@ export class UserBanModalComponent extends FormReactive implements OnInit {
   modalMessage = ''
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private notifier: Notifier,
     private userAdminService: UserAdminService,
diff --git a/client/src/app/shared/shared-moderation/video-block.component.ts b/client/src/app/shared/shared-moderation/video-block.component.ts
index f8b22a3f6..3ff53443a 100644
--- a/client/src/app/shared/shared-moderation/video-block.component.ts
+++ b/client/src/app/shared/shared-moderation/video-block.component.ts
@@ -1,7 +1,7 @@
 import { Component, EventEmitter, OnInit, Output, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
 import { prepareIcu } from '@app/helpers'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { Video } from '@app/shared/shared-main'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
@@ -25,7 +25,7 @@ export class VideoBlockComponent extends FormReactive implements OnInit {
   private openedModal: NgbModalRef
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private modalService: NgbModal,
     private videoBlocklistService: VideoBlockService,
     private notifier: Notifier
diff --git a/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts b/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts
index 13e2e5424..c2c30d38b 100644
--- a/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts
+++ b/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts
@@ -1,7 +1,7 @@
 import { Subject, Subscription } from 'rxjs'
 import { Component, Input, OnDestroy, OnInit } from '@angular/core'
 import { AuthService, Notifier, ServerService, ThemeService, UserService } from '@app/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { HTMLServerConfig, User, UserUpdateMe } from '@shared/models'
 import { SelectOptionsItem } from 'src/types'
 
@@ -22,7 +22,7 @@ export class UserInterfaceSettingsComponent extends FormReactive implements OnIn
   private serverConfig: HTMLServerConfig
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private authService: AuthService,
     private notifier: Notifier,
     private userService: UserService,
diff --git a/client/src/app/shared/shared-user-settings/user-video-settings.component.ts b/client/src/app/shared/shared-user-settings/user-video-settings.component.ts
index 7d6b69469..af0870f12 100644
--- a/client/src/app/shared/shared-user-settings/user-video-settings.component.ts
+++ b/client/src/app/shared/shared-user-settings/user-video-settings.component.ts
@@ -3,7 +3,7 @@ import { Subject, Subscription } from 'rxjs'
 import { first } from 'rxjs/operators'
 import { Component, Input, OnDestroy, OnInit } from '@angular/core'
 import { AuthService, Notifier, ServerService, User, UserService } from '@app/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { UserUpdateMe } from '@shared/models'
 import { NSFWPolicyType } from '@shared/models/videos/nsfw-policy.type'
 
@@ -22,7 +22,7 @@ export class UserVideoSettingsComponent extends FormReactive implements OnInit,
   formValuesWatcher: Subscription
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private authService: AuthService,
     private notifier: Notifier,
     private userService: UserService,
diff --git a/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts b/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts
index 7bcfdd8aa..61bcd5345 100644
--- a/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts
+++ b/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts
@@ -1,6 +1,6 @@
 import { Component, Input, OnInit } from '@angular/core'
 import { Notifier } from '@app/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { logger } from '@root-helpers/logger'
 import { USER_HANDLE_VALIDATOR } from '../form-validators/user-validators'
 
@@ -15,7 +15,7 @@ export class RemoteSubscribeComponent extends FormReactive implements OnInit {
   @Input() showHelp = false
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private notifier: Notifier
   ) {
     super()
diff --git a/client/src/app/shared/shared-users/index.ts b/client/src/app/shared/shared-users/index.ts
index 8f90f2515..20e60486d 100644
--- a/client/src/app/shared/shared-users/index.ts
+++ b/client/src/app/shared/shared-users/index.ts
@@ -1,4 +1,5 @@
 export * from './user-admin.service'
 export * from './user-signup.service'
+export * from './two-factor.service'
 
 export * from './shared-users.module'
diff --git a/client/src/app/shared/shared-users/shared-users.module.ts b/client/src/app/shared/shared-users/shared-users.module.ts
index 2a1dadf20..5a1675dc9 100644
--- a/client/src/app/shared/shared-users/shared-users.module.ts
+++ b/client/src/app/shared/shared-users/shared-users.module.ts
@@ -1,6 +1,7 @@
 
 import { NgModule } from '@angular/core'
 import { SharedMainModule } from '../shared-main/shared-main.module'
+import { TwoFactorService } from './two-factor.service'
 import { UserAdminService } from './user-admin.service'
 import { UserSignupService } from './user-signup.service'
 
@@ -15,7 +16,8 @@ import { UserSignupService } from './user-signup.service'
 
   providers: [
     UserSignupService,
-    UserAdminService
+    UserAdminService,
+    TwoFactorService
   ]
 })
 export class SharedUsersModule { }
diff --git a/client/src/app/shared/shared-users/two-factor.service.ts b/client/src/app/shared/shared-users/two-factor.service.ts
new file mode 100644
index 000000000..9ff916f15
--- /dev/null
+++ b/client/src/app/shared/shared-users/two-factor.service.ts
@@ -0,0 +1,52 @@
+import { catchError } from 'rxjs/operators'
+import { HttpClient } from '@angular/common/http'
+import { Injectable } from '@angular/core'
+import { RestExtractor, UserService } from '@app/core'
+import { TwoFactorEnableResult } from '@shared/models'
+
+@Injectable()
+export class TwoFactorService {
+  constructor (
+    private authHttp: HttpClient,
+    private restExtractor: RestExtractor
+  ) { }
+
+  // ---------------------------------------------------------------------------
+
+  requestTwoFactor (options: {
+    userId: number
+    currentPassword: string
+  }) {
+    const { userId, currentPassword } = options
+
+    const url = UserService.BASE_USERS_URL + userId + '/two-factor/request'
+
+    return this.authHttp.post<TwoFactorEnableResult>(url, { currentPassword })
+    .pipe(catchError(err => this.restExtractor.handleError(err)))
+  }
+
+  confirmTwoFactorRequest (options: {
+    userId: number
+    requestToken: string
+    otpToken: string
+  }) {
+    const { userId, requestToken, otpToken } = options
+
+    const url = UserService.BASE_USERS_URL + userId + '/two-factor/confirm-request'
+
+    return this.authHttp.post(url, { requestToken, otpToken })
+    .pipe(catchError(err => this.restExtractor.handleError(err)))
+  }
+
+  disableTwoFactor (options: {
+    userId: number
+    currentPassword?: string
+  }) {
+    const { userId, currentPassword } = options
+
+    const url = UserService.BASE_USERS_URL + userId + '/two-factor/disable'
+
+    return this.authHttp.post(url, { currentPassword })
+      .pipe(catchError(err => this.restExtractor.handleError(err)))
+  }
+}
diff --git a/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts b/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts
index e019fdd26..f81de7c6b 100644
--- a/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts
+++ b/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts
@@ -3,7 +3,7 @@ import { Subject, Subscription } from 'rxjs'
 import { debounceTime, filter } from 'rxjs/operators'
 import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Input, OnChanges, OnDestroy, OnInit, SimpleChanges } from '@angular/core'
 import { AuthService, DisableForReuseHook, Notifier } from '@app/core'
-import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
+import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { secondsToTime } from '@shared/core-utils'
 import {
   Video,
@@ -59,7 +59,7 @@ export class VideoAddToPlaylistComponent extends FormReactive implements OnInit,
   private pendingAddId: number
 
   constructor (
-    protected formValidatorService: FormValidatorService,
+    protected formReactiveService: FormReactiveService,
     private authService: AuthService,
     private notifier: Notifier,
     private videoPlaylistService: VideoPlaylistService,