feat(cli): add openapi suppport in orpc (#563)

apps/cli/templates/api/orpc/server/next/src/app/rpc/[...all]/route.ts.hbs

@@ -2,18 +2,47 @@
 import { createContext } from '@/lib/context'
 {{/if}}
 import { appRouter } from '@/routers'
+import { OpenAPIHandler } from '@orpc/openapi/fetch'
+import { OpenAPIReferencePlugin } from '@orpc/openapi/plugins'
+import { ZodToJsonSchemaConverter } from '@orpc/zod/zod4'
 import { RPCHandler } from '@orpc/server/fetch'
+import { onError } from '@orpc/server'
 import { NextRequest } from 'next/server'
 
-const handler = new RPCHandler(appRouter)
+const rpcHandler = new RPCHandler(appRouter, {
+  interceptors: [
+    onError((error) => {
+      console.error(error)
+    }),
+  ],
+})
+const apiHandler = new OpenAPIHandler(appRouter, {
+  plugins: [
+    new OpenAPIReferencePlugin({
+      schemaConverters: [new ZodToJsonSchemaConverter()],
+    }),
+  ],
+  interceptors: [
+    onError((error) => {
+      console.error(error)
+    }),
+  ],
+})
 
 async function handleRequest(req: NextRequest) {
-  const { response } = await handler.handle(req, {
+  const rpcResult = await rpcHandler.handle(req, {
     prefix: '/rpc',
     context: {{#if (eq auth "better-auth")}}await createContext(req){{else}}{}{{/if}},
   })
+  if (rpcResult.response) return rpcResult.response
 
-  return response ?? new Response('Not found', { status: 404 })
+  const apiResult = await apiHandler.handle(req, {
+    prefix: '/rpc/api',
+    context: {{#if (eq auth "better-auth")}}await createContext(req){{else}}{}{{/if}},
+  })
+  if (apiResult.response) return apiResult.response
+
+  return new Response('Not found', { status: 404 })
 }
 
 export const GET = handleRequest