ChatAI/app/api/chat/route.ts

import { OpenAIApi, Configuration } from "openai";
import { ChatRequest } from "./typing";

const isProd = process.env.NODE_ENV === "production";

let openai: OpenAIApi | undefined;
async function initService() {
  let apiKey = process.env.OPENAI_API_KEY;

  if (!isProd) {
    apiKey = await (await import("./config")).apiKey;
  }

  openai = new OpenAIApi(
    new Configuration({
      apiKey,
    })
  );
}

export async function POST(req: Request) {
  if (!openai) {
    await initService();
  }

  try {
    const requestBody = (await req.json()) as ChatRequest;
    const completion = await openai!.createChatCompletion(
      {
        ...requestBody,
      },
      isProd
        ? {}
        : {
            proxy: {
              protocol: "socks",
              host: "127.0.0.1",
              port: 7890,
            },
          }
    );

    return new Response(JSON.stringify(completion.data));
  } catch (e) {
    return new Response(JSON.stringify(e));
  }
}