Add more visitor auth cookie combinations with /v/ for backwards comp…

…atibility (#2503)

packages/gitbook/src/lib/visitor-auth.test.ts

@@ -59,6 +59,20 @@ describe('getVisitorAuthToken', () => {
         const request = nextRequest('https://example.com');
         expect(getVisitorAuthToken(request, request.nextUrl)).toBeUndefined();
     });
+
+    // For backwards compatibility
+    it('should return the token from the cookie of a /v/ path when the url does not have /v/', () => {
+        const request = nextRequest('https://example.com/hello/space1/cool', {
+            [getVisitorAuthCookieName('/')]: { value: getVisitorAuthCookieValue('/', 'no') },
+            [getVisitorAuthCookieName('/hello/v/space1/')]: {
+                value: getVisitorAuthCookieValue('/hello/v/space1/', 'gotcha'),
+            },
+        });
+
+        const visitorAuth = getVisitorAuthToken(request, request.nextUrl);
+        assertVisitorAuthCookieValue(visitorAuth);
+        expect(visitorAuth.token).toEqual('gotcha');
+    });
 });
 
 function assertVisitorAuthCookieValue(value: unknown): asserts value is VisitorAuthCookieValue {

packages/gitbook/src/lib/visitor-auth.ts

@@ -61,6 +61,12 @@ function getUrlBasePathCombinations(url: URL | NextRequest['nextUrl']): string[]
 
     for (let index = 0; index < parts.length; index++) {
         baseNames.push('/' + parts.slice(0, index + 1).join('/') + '/');
+        // For backwards compatibility, we also add the base path with the `/v/` prefix if it's not already there
+        if (parts.length > 1 && index >= 1 && ![parts[0], parts[1]].includes('v')) {
+            baseNames.push(
+                '/' + parts.slice(0, 1) + '/v/' + parts.slice(1, index + 1).join('/') + '/',
+            );
+        }
     }
 
     return baseNames.reverse();