import { cors } from "hono/cors"

function app() {
  const app = new Hono()

  const result = app
    .onError((err, c) => {
      // ... existing error handling
    })
    .use(
      "*",
      cors({
        origin: (origin) => {
          // Allow localhost origins on any port for development
          const localhostPattern = /^https?:\/\/localhost(:\d+)?$/
          const localhostIPPattern = /^https?:\/\/127\.0\.0\.1(:\d+)?$/

          if (
            localhostPattern.test(origin) ||
            localhostIPPattern.test(origin)
          ) {
            return origin
          }

          return null // Reject other origins
        },
        allowMethods: ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
        allowHeaders: ["Content-Type", "Authorization", "X-Requested-With"],
        exposeHeaders: ["Content-Length", "X-Request-ID"],
        credentials: true,
        maxAge: 86400, // 24 hours for development
      }),
    )
    .use(async (c, next) => {
      // ... existing logging middleware
    })
  // ... rest of route definitions

  return result
}