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import { NextRequest, NextResponse } from "next/server";
import { auth } from "./auth";
import { getServerSideConfig } from "@/app/config/server";
import { ApiPath, GEMINI_BASE_URL, ModelProvider } from "@/app/constant";
import { prettyObject } from "@/app/utils/format";
const serverConfig = getServerSideConfig();
export async function handle(
req: NextRequest,
{ params }: { params: { provider: string; path: string[] } },
) {
console.log("[Google Route] params ", params);
if (req.method === "OPTIONS") {
return NextResponse.json({ body: "OK" }, { status: 200 });
}
const authResult = auth(req, ModelProvider.GeminiPro);
if (authResult.error) {
return NextResponse.json(authResult, {
status: 401,
});
}
const bearToken =
req.headers.get("x-goog-api-key") || req.headers.get("Authorization") || "";
const token = bearToken.trim().replaceAll("Bearer ", "").trim();
const apiKey = token ? token : serverConfig.googleApiKey;
if (!apiKey) {
return NextResponse.json(
{
error: true,
message: `missing GOOGLE_API_KEY in server env vars`,
},
{
status: 401,
},
);
}
try {
const response = await request(req, apiKey);
return response;
} catch (e) {
console.error("[Google] ", e);
return NextResponse.json(prettyObject(e));
}
}
export const GET = handle;
export const POST = handle;
export const runtime = "edge";
export const preferredRegion = [
"bom1",
"cle1",
"cpt1",
"gru1",
"hnd1",
"iad1",
"icn1",
"kix1",
"pdx1",
"sfo1",
"sin1",
"syd1",
];
async function request(req: NextRequest, apiKey: string) {
const controller = new AbortController();
let baseUrl = serverConfig.googleUrl || GEMINI_BASE_URL;
let path = `${req.nextUrl.pathname}`.replaceAll(ApiPath.Google, "");
if (!baseUrl.startsWith("http")) {
baseUrl = `https://${baseUrl}`;
}
if (baseUrl.endsWith("/")) {
baseUrl = baseUrl.slice(0, -1);
}
console.log("[Proxy] ", path);
console.log("[Base Url]", baseUrl);
const timeoutId = setTimeout(
() => {
controller.abort();
},
10 * 60 * 1000,
);
const fetchUrl = `${baseUrl}${path}${
req?.nextUrl?.searchParams?.get("alt") === "sse" ? "?alt=sse" : ""
}`;
console.log("[Fetch Url] ", fetchUrl);
const fetchOptions: RequestInit = {
headers: {
"Content-Type": "application/json",
"Cache-Control": "no-store",
"x-goog-api-key":
req.headers.get("x-goog-api-key") ||
(req.headers.get("Authorization") ?? "").replace("Bearer ", ""),
},
method: req.method,
body: req.body,
// to fix #2485: https://stackoverflow.com/questions/55920957/cloudflare-worker-typeerror-one-time-use-body
redirect: "manual",
// @ts-ignore
duplex: "half",
signal: controller.signal,
};
try {
const res = await fetch(fetchUrl, fetchOptions);
// to prevent browser prompt for credentials
const newHeaders = new Headers(res.headers);
newHeaders.delete("www-authenticate");
// to disable nginx buffering
newHeaders.set("X-Accel-Buffering", "no");
return new Response(res.body, {
status: res.status,
statusText: res.statusText,
headers: newHeaders,
});
} finally {
clearTimeout(timeoutId);
}
}
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