From 14a65070dc6fe281f60452e612057dab4975a905 Mon Sep 17 00:00:00 2001
From: Daniel Doynov <daniel@steel-buy.com>
Date: Fri, 9 Dec 2022 13:00:49 +0000
Subject: [PATCH] fix: add openid-configuration endpoint

---
 integration-tests/server.test.ts | 16 ++++++++++++++++
 src/server/server.ts             |  8 ++++++++
 2 files changed, 24 insertions(+)

diff --git a/integration-tests/server.test.ts b/integration-tests/server.test.ts
index 98d3561e..83de3487 100644
--- a/integration-tests/server.test.ts
+++ b/integration-tests/server.test.ts
@@ -126,4 +126,20 @@ describe("HTTP server", () => {
       });
     });
   });
+
+  describe("OpenId Configuration Endpoint", () => {
+    it("responds with open id configuration", async () => {
+      const server = createServer(jest.fn(), MockLogger as any);
+
+      const response = await supertest(server.application).get(
+        "/any-user-pool/.well-known/openid-configuration"
+      );
+      expect(response.status).toEqual(200);
+      expect(response.body).toEqual({
+        id_token_signing_alg_values_supported: ["RS256"],
+        jwks_uri: `http://localhost:9229/any-user-pool/.well-known/jwks.json`,
+        issuer: `http://localhost:9229/any-user-pool`,
+      });
+    });
+  });
 });
diff --git a/src/server/server.ts b/src/server/server.ts
index e6e8afab..a662bd69 100644
--- a/src/server/server.ts
+++ b/src/server/server.ts
@@ -55,6 +55,14 @@ export const createServer = (
     });
   });
 
+  app.get("/:userPoolId/.well-known/openid-configuration", (req, res) => {
+    res.status(200).json({
+      id_token_signing_alg_values_supported: ["RS256"],
+      jwks_uri: `http://localhost:9229/${req.params.userPoolId}/.well-known/jwks.json`,
+      issuer: `http://localhost:9229/${req.params.userPoolId}`,
+    });
+  });
+
   app.get("/health", (req, res) => {
     res.status(200).json({ ok: true });
   });