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import { type NextRequest } from "next/server";
import {
ChatHistory,
ChatHistoryZod,
convertChatHistoryList,
SourcesFromApi,
} from "@repo/shared-types";
import { ensureAuth } from "../ensureAuth";
import { z } from "zod";
export const runtime = "edge";
export async function POST(req: NextRequest) {
const session = await ensureAuth(req);
if (!session) {
return new Response("Unauthorized", { status: 401 });
}
if (!process.env.BACKEND_SECURITY_KEY) {
return new Response("Missing BACKEND_SECURITY_KEY", { status: 500 });
}
const url = new URL(req.url);
const query = url.searchParams.get("q");
const spaces = url.searchParams.get("spaces");
const sourcesOnly = url.searchParams.get("sourcesOnly") ?? "false";
const jsonRequest = (await req.json()) as {
chatHistory: ChatHistory[];
sources: SourcesFromApi[] | undefined;
};
const { chatHistory, sources } = jsonRequest;
if (!query || query.trim.length < 0) {
return new Response(JSON.stringify({ message: "Invalid query" }), {
status: 400,
});
}
const validated = z.array(ChatHistoryZod).safeParse(chatHistory ?? []);
if (!validated.success) {
return new Response(
JSON.stringify({
message: "Invalid chat history",
error: validated.error,
}),
{ status: 400 },
);
}
const modelCompatible = await convertChatHistoryList(validated.data);
const resp = await fetch(
`${process.env.BACKEND_BASE_URL}/api/chat?query=${query}&user=${session.user.id}&sourcesOnly=${sourcesOnly}&spaces=${spaces}`,
{
headers: {
Authorization: `Bearer ${process.env.BACKEND_SECURITY_KEY}`,
"Content-Type": "application/json",
},
method: "POST",
body: JSON.stringify({
chatHistory: modelCompatible,
sources,
}),
},
);
if (sourcesOnly == "true") {
const data = (await resp.json()) as SourcesFromApi;
return new Response(JSON.stringify(data), { status: 200 });
}
if (resp.status !== 200 || !resp.ok) {
const errorData = await resp.text();
console.log(errorData);
return new Response(
JSON.stringify({ message: "Error in CF function", error: errorData }),
{ status: resp.status },
);
}
return resp;
}
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