130 lines
3.1 KiB
TypeScript
130 lines
3.1 KiB
TypeScript
import { NextRequest, NextResponse } from "next/server";
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import { auth } from "./auth";
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import { getServerSideConfig } from "@/app/config/server";
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import { ApiPath, GEMINI_BASE_URL, ModelProvider } from "@/app/constant";
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import { prettyObject } from "@/app/utils/format";
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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: { provider: string; path: string[] } },
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) {
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console.log("[Google 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.GeminiPro);
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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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const bearToken = req.headers.get("Authorization") ?? "";
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const token = bearToken.trim().replaceAll("Bearer ", "").trim();
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const apiKey = token ? token : serverConfig.googleApiKey;
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if (!apiKey) {
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return NextResponse.json(
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{
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error: true,
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message: `missing GOOGLE_API_KEY in server env vars`,
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},
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{
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status: 401,
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},
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);
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}
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try {
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const response = await request(req, apiKey);
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return response;
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} catch (e) {
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console.error("[Google] ", e);
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return NextResponse.json(prettyObject(e));
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}
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}
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export const GET = handle;
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export const POST = handle;
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export const runtime = "edge";
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export const preferredRegion = [
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"bom1",
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"cle1",
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"cpt1",
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"gru1",
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"hnd1",
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"iad1",
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"icn1",
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"kix1",
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"pdx1",
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"sfo1",
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"sin1",
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"syd1",
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];
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async function request(req: NextRequest, apiKey: string) {
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const controller = new AbortController();
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let baseUrl = serverConfig.googleUrl || GEMINI_BASE_URL;
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let path = `${req.nextUrl.pathname}`.replaceAll(ApiPath.Google, "");
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if (!baseUrl.startsWith("http")) {
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baseUrl = `https://${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}?key=${apiKey}${
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req?.nextUrl?.searchParams?.get("alt") === "sse" ? "&alt=sse" : ""
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}`;
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console.log("[Fetch Url] ", fetchUrl);
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const fetchOptions: RequestInit = {
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headers: {
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"Content-Type": "application/json",
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"Cache-Control": "no-store",
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},
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method: req.method,
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body: req.body,
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// to fix #2485: https://stackoverflow.com/questions/55920957/cloudflare-worker-typeerror-one-time-use-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 {
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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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