131 lines
3.2 KiB
TypeScript
131 lines
3.2 KiB
TypeScript
import type { NextRequest } from 'next/server';
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import { auth } from '@/app/api/auth';
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import { getServerSideConfig } from '@/app/config/server';
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import {
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ApiPath,
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IFLYTEK_BASE_URL,
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ModelProvider,
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ServiceProvider,
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} from '@/app/constant';
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import { prettyObject } from '@/app/utils/format';
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import { isModelAvailableInServer } from '@/app/utils/model';
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import { NextResponse } from 'next/server';
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// iflytek
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const serverConfig = getServerSideConfig();
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export async function handle(
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req: NextRequest,
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{ params }: { params: { path: string[] } },
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) {
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console.log('[Iflytek Route] params ', params);
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if (req.method === 'OPTIONS') {
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return NextResponse.json({ body: 'OK' }, { status: 200 });
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}
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const authResult = auth(req, ModelProvider.Iflytek);
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if (authResult.error) {
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return NextResponse.json(authResult, {
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status: 401,
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});
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}
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try {
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const response = await request(req);
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return response;
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} catch (e) {
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console.error('[Iflytek] ', e);
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return NextResponse.json(prettyObject(e));
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}
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}
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async function request(req: NextRequest) {
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const controller = new AbortController();
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// iflytek use base url or just remove the path
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const path = `${req.nextUrl.pathname}`.replaceAll(ApiPath.Iflytek, '');
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let baseUrl = serverConfig.iflytekUrl || IFLYTEK_BASE_URL;
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if (!baseUrl.startsWith('http')) {
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baseUrl = `https://${baseUrl}`;
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}
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if (baseUrl.endsWith('/')) {
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baseUrl = baseUrl.slice(0, -1);
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}
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console.log('[Proxy] ', path);
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console.log('[Base Url]', baseUrl);
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const timeoutId = setTimeout(
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() => {
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controller.abort();
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},
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10 * 60 * 1000,
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);
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const fetchUrl = `${baseUrl}${path}`;
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const fetchOptions: RequestInit = {
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headers: {
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'Content-Type': 'application/json',
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'Authorization': req.headers.get('Authorization') ?? '',
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},
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method: req.method,
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body: req.body,
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redirect: 'manual',
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// @ts-ignore
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duplex: 'half',
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signal: controller.signal,
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};
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// try to refuse some request to some models
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if (serverConfig.customModels && req.body) {
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try {
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const clonedBody = await req.text();
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fetchOptions.body = clonedBody;
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const jsonBody = JSON.parse(clonedBody) as { model?: string };
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// not undefined and is false
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if (
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isModelAvailableInServer(
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serverConfig.customModels,
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jsonBody?.model as string,
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ServiceProvider.Iflytek as string,
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)
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) {
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return NextResponse.json(
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{
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error: true,
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message: `you are not allowed to use ${jsonBody?.model} model`,
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},
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{
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status: 403,
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},
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);
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}
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} catch (e) {
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console.error(`[Iflytek] filter`, e);
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}
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}
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try {
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const res = await fetch(fetchUrl, fetchOptions);
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// to prevent browser prompt for credentials
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const newHeaders = new Headers(res.headers);
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newHeaders.delete('www-authenticate');
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// to disable nginx buffering
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newHeaders.set('X-Accel-Buffering', 'no');
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return new Response(res.body, {
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status: res.status,
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statusText: res.statusText,
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headers: newHeaders,
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});
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} finally {
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clearTimeout(timeoutId);
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}
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}
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