refactor(ai): use HTTP proxy agents for Bedrock

packages/ai/src/utils/node-http-proxy.ts

@@ -0,0 +1,50 @@
+import type { Agent as HttpAgent } from "node:http";
+import type { Agent as HttpsAgent } from "node:https";
+import { createRequire } from "node:module";
+import { HttpProxyAgent } from "http-proxy-agent";
+import { HttpsProxyAgent } from "https-proxy-agent";
+
+const require = createRequire(import.meta.url);
+const { getProxyForUrl } = require("proxy-from-env") as { getProxyForUrl: (url: string) => string };
+
+export interface NodeHttpProxyAgents {
+	httpAgent: HttpAgent;
+	httpsAgent: HttpsAgent;
+}
+
+export const UNSUPPORTED_PROXY_PROTOCOL_MESSAGE =
+	"Unsupported proxy protocol. SOCKS and PAC proxy URLs are not supported; use an HTTP or HTTPS proxy URL.";
+
+export function resolveHttpProxyUrlForTarget(targetUrl: string | URL): URL | undefined {
+	const proxy = getProxyForUrl(targetUrl.toString());
+	if (!proxy) {
+		return undefined;
+	}
+
+	let proxyUrl: URL;
+	try {
+		proxyUrl = new URL(proxy);
+	} catch (error) {
+		throw new Error(
+			`Invalid proxy URL ${JSON.stringify(proxy)}: ${error instanceof Error ? error.message : String(error)}`,
+		);
+	}
+
+	if (proxyUrl.protocol !== "http:" && proxyUrl.protocol !== "https:") {
+		throw new Error(`${UNSUPPORTED_PROXY_PROTOCOL_MESSAGE} Got ${proxyUrl.protocol}`);
+	}
+
+	return proxyUrl;
+}
+
+export function createHttpProxyAgentsForTarget(targetUrl: string | URL): NodeHttpProxyAgents | undefined {
+	const proxyUrl = resolveHttpProxyUrlForTarget(targetUrl);
+	if (!proxyUrl) {
+		return undefined;
+	}
+
+	return {
+		httpAgent: new HttpProxyAgent(proxyUrl),
+		httpsAgent: new HttpsProxyAgent(proxyUrl) as unknown as HttpsAgent,
+	};
+}