Fix MPAC redirect URL (#2456)

* Fix MPAC redirect URL

* Address comment

src/Utils/AuthorizationUtils.test.ts

@@ -163,4 +163,42 @@ describe("AuthorizationUtils", () => {
       expect((instance as any)._config.auth.redirectUri).toBe("http://localhost/redirectBridge.html");
     });
   });
+
+  describe("getRedirectBridgeUrl()", () => {
+    const originalNodeEnv = process.env.NODE_ENV;
+    const originalPathname = window.location.pathname;
+
+    afterEach(() => {
+      process.env.NODE_ENV = originalNodeEnv;
+      Object.defineProperty(window, "location", {
+        value: { ...window.location, pathname: originalPathname },
+        writable: true,
+      });
+    });
+
+    it("should use dev URL in development mode", () => {
+      process.env.NODE_ENV = "development";
+      expect(AuthorizationUtils.getRedirectBridgeUrl()).toBe(
+        "https://dataexplorer-dev.azurewebsites.net/redirectBridge.html",
+      );
+    });
+
+    it("should use MPAC path when on /mpac/", () => {
+      process.env.NODE_ENV = "production";
+      Object.defineProperty(window, "location", {
+        value: { origin: "https://cosmos.azure.com", pathname: "/mpac/explorer.html" },
+        writable: true,
+      });
+      expect(AuthorizationUtils.getRedirectBridgeUrl()).toBe("https://cosmos.azure.com/mpac/redirectBridge.html");
+    });
+
+    it("should use root path when not on /mpac/", () => {
+      process.env.NODE_ENV = "production";
+      Object.defineProperty(window, "location", {
+        value: { origin: "https://cosmos.azure.com", pathname: "/explorer.html" },
+        writable: true,
+      });
+      expect(AuthorizationUtils.getRedirectBridgeUrl()).toBe("https://cosmos.azure.com/redirectBridge.html");
+    });
+  });
 });

src/Utils/AuthorizationUtils.ts

@@ -50,12 +50,25 @@ export function decryptJWTToken(token: string) {
   return JSON.parse(tokenPayload);
 }
 
+export function getRedirectBridgeUrl(): string {
+  if (process.env.NODE_ENV === "development") {
+    return "https://dataexplorer-dev.azurewebsites.net/redirectBridge.html";
+  }
+  const basePath = window.location.pathname.startsWith("/mpac/") ? "/mpac" : "";
+  return `${window.location.origin}${basePath}/redirectBridge.html`;
+}
+
+export function getPostLogoutRedirectUrl(): string {
+  if (process.env.NODE_ENV === "development") {
+    return "https://dataexplorer-dev.azurewebsites.net/hostedExplorer.html";
+  }
+  const basePath = window.location.pathname.startsWith("/mpac/") ? "/mpac" : "";
+  return `${window.location.origin}${basePath}`;
+}
+
 export async function getMsalInstance() {
   // Compute the redirect bridge URL for MSAL v5 COOP handling
-  const redirectBridgeUrl =
-    process.env.NODE_ENV === "development"
-      ? "https://dataexplorer-dev.azurewebsites.net/redirectBridge.html"
-      : `${window.location.origin}/redirectBridge.html`;
+  const redirectBridgeUrl = getRedirectBridgeUrl();
 
   const msalConfig: msal.Configuration = {
     cache: {