Add URL redirection support for external auth

client/src/app/+login/login.component.ts

@@ -1,7 +1,7 @@
 
 import { AfterViewInit, Component, ElementRef, OnInit, ViewChild } from '@angular/core'
 import { ActivatedRoute } from '@angular/router'
-import { AuthService, Notifier, RedirectService, UserService } from '@app/core'
+import { AuthService, Notifier, RedirectService, SessionStorageService, UserService } from '@app/core'
 import { HooksService } from '@app/core/plugins/hooks.service'
 import { LOGIN_PASSWORD_VALIDATOR, LOGIN_USERNAME_VALIDATOR } from '@app/shared/form-validators/login-validators'
 import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
@@ -17,6 +17,8 @@ import { RegisteredExternalAuthConfig, ServerConfig } from '@shared/models'
 })
 
 export class LoginComponent extends FormReactive implements OnInit, AfterViewInit {
+  private static SESSION_STORAGE_REDIRECT_URL_KEY = 'login-previous-url'
+
   @ViewChild('forgotPasswordModal', { static: true }) forgotPasswordModal: ElementRef
 
   accordion: NgbAccordion
@@ -46,7 +48,8 @@ export class LoginComponent extends FormReactive implements OnInit, AfterViewIni
     private userService: UserService,
     private redirectService: RedirectService,
     private notifier: Notifier,
-    private hooks: HooksService
+    private hooks: HooksService,
+    private storage: SessionStorageService
   ) {
     super()
   }
@@ -88,6 +91,8 @@ export class LoginComponent extends FormReactive implements OnInit, AfterViewIni
       this.externalAuthError = true
       return
     }
+
+    this.storage.setItem(LoginComponent.SESSION_STORAGE_REDIRECT_URL_KEY, this.redirectService.getPreviousUrl())
   }
 
   ngAfterViewInit () {
@@ -151,7 +156,9 @@ The link will expire within 1 hour.`
 
     this.authService.login(username, null, token)
       .subscribe({
-        next: () => this.redirectService.redirectToPreviousRoute(),
+        next: () => {
+          this.redirectService.redirectToPreviousRoute(this.storage.getItem(LoginComponent.SESSION_STORAGE_REDIRECT_URL_KEY))
+        },
 
         error: err => {
           this.handleError(err)

client/src/app/+manage/video-channel-edit/video-channel-update.component.ts

@@ -96,7 +96,7 @@ export class VideoChannelUpdateComponent extends VideoChannelEdit implements OnI
 
           this.notifier.success($localize`Video channel ${videoChannelUpdate.displayName} updated.`)
 
-          this.redirectService.redirectToPreviousRoute([ '/c', this.videoChannel.name ])
+          this.redirectService.redirectToPreviousRoute('/c/' + this.videoChannel.name)
         },
 
         error: err => {

client/src/app/core/routing/redirect.service.ts

@@ -46,19 +46,23 @@ export class RedirectService {
     return this.defaultTrendingAlgorithm
   }
 
-  redirectToPreviousRoute (fallbackRoute: string[] = null) {
+  getPreviousUrl () {
+    return this.previousUrl
+  }
+
+  redirectToPreviousRoute (fallbackRoute?: string) {
     const exceptions = [
       '/verify-account',
       '/reset-password'
     ]
 
-    if (this.previousUrl) {
+    if (this.previousUrl && this.previousUrl !== '/') {
       const isException = exceptions.find(e => this.previousUrl.startsWith(e))
       if (!isException) return this.router.navigateByUrl(this.previousUrl)
     }
 
     if (fallbackRoute) {
-      return this.router.navigate(fallbackRoute)
+      return this.router.navigateByUrl(fallbackRoute)
     }
 
     return this.redirectToHomepage()