feat(packages/client): ✨ Add SSO login helper to client

packages/client/versia/client.ts

@@ -2814,6 +2814,44 @@ export class Client extends BaseClient {
         );
     }
 
+    public startSsoLogin(
+        issuer: string,
+        client_id: string,
+        redirect_uri: URL,
+        options?: Partial<{
+            scopes: string[];
+            state: string;
+        }>,
+        extra?: RequestInit,
+    ): Promise<URL> {
+        return this.post<void>(
+            `/oauth/sso/${issuer}`,
+            {
+                client_id,
+                redirect_uri: redirect_uri.toString(),
+                scopes: options?.scopes,
+                state: options?.state,
+            },
+            extra,
+        ).then((output) => {
+            const isRedirect = output.raw.status === 302;
+
+            if (!isRedirect) {
+                throw new Error(
+                    `Expected redirect response but got status ${output.raw.status}`,
+                );
+            }
+
+            const location = output.raw.headers.get("Location");
+
+            if (!location) {
+                throw new Error("Redirect response missing Location header");
+            }
+
+            return new URL(location);
+        });
+    }
+
     // TODO: streamingURL
 
     /**