Show Reddit recovery status in dashboard

tests/login-status.test.ts

@@ -0,0 +1,81 @@
+import express from 'express';
+import type { AddressInfo } from 'node:net';
+import { afterEach, describe, expect, it } from 'vitest';
+import { classifyRedditSessionError } from '../src/browser/client.js';
+import { createLoginRouter } from '../src/web/routes/login.js';
+
+const servers: Array<ReturnType<express.Express['listen']>> = [];
+
+async function request(app: express.Express, path: string): Promise<Response> {
+  const server = app.listen(0);
+  servers.push(server);
+  await new Promise<void>((resolve) => server.once('listening', resolve));
+  const { port } = server.address() as AddressInfo;
+  return fetch(`http://127.0.0.1:${port}${path}`);
+}
+
+afterEach(async () => {
+  await Promise.all(
+    servers.splice(0).map(
+      (server) => new Promise<void>((resolve) => server.close(() => resolve())),
+    ),
+  );
+  delete process.env.NOVNC_PUBLIC_URL;
+});
+
+function appWithBrowser(state: 'authenticated' | 'login-required' | 'unreachable') {
+  const app = express();
+  app.use(
+    createLoginRouter({
+      services: {
+        browser: {
+          isSessionValid: async () => state === 'authenticated',
+          getSessionState: () => state,
+        },
+      },
+      logger: { error: () => undefined },
+    } as never),
+  );
+  return app;
+}
+
+describe('Reddit session status', () => {
+  it('reports when Reddit is unreachable instead of presenting it as logged out', async () => {
+    const response = await request(appWithBrowser('unreachable'), '/login/status');
+
+    expect(response.status).toBe(200);
+    expect(await response.json()).toEqual({
+      ready: true,
+      loggedIn: false,
+      status: 'unreachable',
+    });
+  });
+
+  it('reports when an interactive Reddit login is required', async () => {
+    const response = await request(appWithBrowser('login-required'), '/login/status');
+
+    expect(await response.json()).toMatchObject({
+      loggedIn: false,
+      status: 'login-required',
+    });
+  });
+
+  it('returns the configured public noVNC URL', async () => {
+    process.env.NOVNC_PUBLIC_URL = 'https://red-vnc.apps.jbrunton.co.uk';
+
+    const response = await request(appWithBrowser('authenticated'), '/login/info');
+
+    expect(await response.json()).toMatchObject({
+      publicUrl: 'https://red-vnc.apps.jbrunton.co.uk',
+    });
+  });
+
+  it('classifies Reddit navigation failures as unreachable', () => {
+    expect(
+      classifyRedditSessionError(
+        new Error('page.goto: net::ERR_HTTP_RESPONSE_CODE_FAILURE at https://www.reddit.com/'),
+      ),
+    ).toBe('unreachable');
+    expect(classifyRedditSessionError(new Error('login form was not found'))).toBe('login-required');
+  });
+});