[Blazor][Wasm] Expose login mode option for AAD and AAD B2C Authentication (#23694)

* Adds a login mode option via MSAL provider options and updates the AuthenticationService.ts to use the new setting

src/Components/WebAssembly/Authentication.Msal/src/Interop/AuthenticationService.ts

@@ -47,7 +47,8 @@ interface AuthorizeService {
 
 interface AuthorizeServiceConfiguration extends Msal.Configuration {
     defaultAccessTokenScopes: string[];
-    additionalScopesToConsent: string[]
+    additionalScopesToConsent: string[];
+    loginMode: string;
 }
 
 class MsalAuthorizeService implements AuthorizeService {
@@ -142,6 +143,13 @@ class MsalAuthorizeService implements AuthorizeService {
     }
 
     async signInCore(request: Msal.AuthenticationParameters): Promise<Msal.AuthResponse | Msal.AuthError | undefined> {
+        if (this._settings.loginMode.toLowerCase() === "redirect") {
+            try {
+                this._msalApplication.loginRedirect(request);
+            } catch (e) {
+                return e;
+            }
+        } else {
             try {
                 return await this._msalApplication.loginPopup(request);
             } catch (e) {
@@ -157,6 +165,7 @@ class MsalAuthorizeService implements AuthorizeService {
                 }
             }
         }
+    }
 
     completeSignIn() {
         return this._callbackPromise;

src/Components/WebAssembly/Authentication.Msal/src/Models/MsalProviderOptions.cs

@@ -43,5 +43,10 @@ namespace Microsoft.Authentication.WebAssembly.Msal.Models
         /// Use this parameter to request consent for scopes for other resources.
         /// </remarks>
         public IList<string> AdditionalScopesToConsent { get; set; } = new List<string>();
+
+        /// <summary>
+        /// Gets or sets the login mode that is used when initiating the sign-in flow.
+        /// </summary>
+        public string LoginMode { get; set; } = "popup";
     }
 }