plugin add auth config

app/api/[provider]/[...path]/route.ts

@@ -10,6 +10,8 @@ import { handle as alibabaHandler } from "../../alibaba";
 import { handle as moonshotHandler } from "../../moonshot";
 import { handle as stabilityHandler } from "../../stability";
 import { handle as iflytekHandler } from "../../iflytek";
+import { handle as proxyHandler } from "../../proxy";
+
 async function handle(
   req: NextRequest,
   { params }: { params: { provider: string; path: string[] } },
@@ -36,8 +38,10 @@ async function handle(
       return stabilityHandler(req, { params });
     case ApiPath.Iflytek:
       return iflytekHandler(req, { params });
-    default:
+    case ApiPath.OpenAI:
       return openaiHandler(req, { params });
+    default:
+      return proxyHandler(req, { params });
   }
 }
 

app/api/proxy.ts

@@ -0,0 +1,75 @@
+import { NextRequest, NextResponse } from "next/server";
+
+export async function handle(
+  req: NextRequest,
+  { params }: { params: { path: string[] } },
+) {
+  console.log("[Proxy Route] params ", params);
+
+  if (req.method === "OPTIONS") {
+    return NextResponse.json({ body: "OK" }, { status: 200 });
+  }
+
+  // remove path params from searchParams
+  req.nextUrl.searchParams.delete("path");
+  req.nextUrl.searchParams.delete("provider");
+
+  const subpath = params.path.join("/");
+  const fetchUrl = `${req.headers.get(
+    "x-base-url",
+  )}/${subpath}?${req.nextUrl.searchParams.toString()}`;
+  const skipHeaders = ["connection", "host", "origin", "referer", "cookie"];
+  const headers = new Headers(
+    Array.from(req.headers.entries()).filter((item) => {
+      if (
+        item[0].indexOf("x-") > -1 ||
+        item[0].indexOf("sec-") > -1 ||
+        skipHeaders.includes(item[0])
+      ) {
+        return false;
+      }
+      return true;
+    }),
+  );
+  const controller = new AbortController();
+  const fetchOptions: RequestInit = {
+    headers,
+    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,
+  };
+
+  const timeoutId = setTimeout(
+    () => {
+      controller.abort();
+    },
+    10 * 60 * 1000,
+  );
+
+  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");
+
+    // The latest version of the OpenAI API forced the content-encoding to be "br" in json response
+    // So if the streaming is disabled, we need to remove the content-encoding header
+    // Because Vercel uses gzip to compress the response, if we don't remove the content-encoding header
+    // The browser will try to decode the response with brotli and fail
+    newHeaders.delete("content-encoding");
+
+    return new Response(res.body, {
+      status: res.status,
+      statusText: res.statusText,
+      headers: newHeaders,
+    });
+  } finally {
+    clearTimeout(timeoutId);
+  }
+}