feat: rebuild xiteng.site homelab platform

chat/lib/server-provider-fetch.ts

@@ -0,0 +1,16 @@
+import nodeFetch from "node-fetch";
+import {ProxyAgent} from "proxy-agent";
+import type {ProviderDefinition, ProviderSecret} from "./provider-types";
+
+export function createServerProviderFetch(provider: ProviderDefinition, secret: ProviderSecret) {
+  const proxy = provider.connection.proxy;
+  if (!proxy) return fetch;
+  const proxyUrl = new URL(proxy.url);
+  if (secret.proxy?.username) proxyUrl.username = secret.proxy.username;
+  if (secret.proxy?.password) proxyUrl.password = secret.proxy.password;
+  const agent = new ProxyAgent({getProxyForUrl: () => proxyUrl.toString()});
+  return async (input: RequestInfo | URL, init?: RequestInit) => {
+    const response = await nodeFetch(String(input), {...init, agent} as never);
+    return response as unknown as Response;
+  };
+}