refractor code,

apps/api/src/middleware/authHelpers.ts

@@ -0,0 +1,32 @@
+import { Request, Response } from 'express'
+
+/**
+ * Sends a uniform auth-error JSON response.
+ * All auth middleware must go through this function so the shape is identical
+ * to what the errorMiddleware produces for AppError instances.
+ */
+export function sendUnauthorized(res: Response, error: string, message: string) {
+  return res.status(401).json({ error, message, statusCode: 401 })
+}
+
+export function getCookie(req: Request, name: string): string | null {
+  const cookieHeader = req.headers.cookie
+  if (!cookieHeader) return null
+
+  for (const chunk of cookieHeader.split(';')) {
+    const [rawName, ...rawValue] = chunk.trim().split('=')
+    if (rawName === name) {
+      return decodeURIComponent(rawValue.join('='))
+    }
+  }
+
+  return null
+}
+
+export function sendForbidden(res: Response, error: string, message: string, extra?: Record<string, unknown>) {
+  return res.status(403).json({ error, message, statusCode: 403, ...extra })
+}
+
+export function sendPaymentRequired(res: Response, error: string, message: string, extra?: Record<string, unknown>) {
+  return res.status(402).json({ error, message, statusCode: 402, ...extra })
+}