import { NextResponse } from "next/server";
import { auth } from "@/app/(auth)/auth";
import { getClawdChatsByUserId } from "@/lib/db/queries";
import {
  OPENCLAW_AUTH_REQUIRED_CODE,
  OPENCLAW_AUTH_REQUIRED_MESSAGE,
} from "@/lib/openclaw-chat/errors";

export const dynamic = "force-dynamic";
export const revalidate = 0;

export async function GET(request: Request) {
  const session = await auth().catch(() => null);

  if (!session?.user?.id) {
    return NextResponse.json(
      {
        error: OPENCLAW_AUTH_REQUIRED_MESSAGE,
        code: OPENCLAW_AUTH_REQUIRED_CODE,
      },
      { status: 401 }
    );
  }

  const url = new URL(request.url);
  const limit = Math.max(
    1,
    Math.min(500, Math.round(Number(url.searchParams.get("limit") || 100)))
  );

  const chats = await getClawdChatsByUserId({
    userId: session.user.id,
    limit,
  });

  return NextResponse.json(
    {
      chats: chats.map((chat) => ({
        id: chat.id,
        title: chat.title,
        createdAt: chat.createdAt?.toISOString?.() || chat.createdAt,
        updatedAt: chat.updatedAt?.toISOString?.() || chat.updatedAt,
        messageCount: Number(chat.messageCount || 0),
      })),
    },
    {
      headers: {
        "Cache-Control": "no-store, max-age=0",
      },
    }
  );
}