import { NextResponse } from "next/server";
import { cookies } from "next/headers";
import {
  SESSION_COOKIE_NAME,
  type GatewayBindResponse,
  popiartFetchEnvelope,
} from "@/lib/popiart-api";

export async function POST(request: Request) {
  const cookieStore = await cookies();
  const token = cookieStore.get(SESSION_COOKIE_NAME)?.value;

  if (!token) {
    return NextResponse.json(
      {
        ok: false,
        error: {
          code: "UNAUTHENTICATED",
          message: "missing local popiart session",
        },
      },
      { status: 401 },
    );
  }

  let body: { gateway_user_id?: number; gateway_access_token?: string } = {};

  try {
    body = (await request.json()) as { gateway_user_id?: number; gateway_access_token?: string };
  } catch {
    body = {};
  }

  try {
    const { response, payload } = await popiartFetchEnvelope<GatewayBindResponse>("/auth/gateway/bind", {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        Authorization: `Bearer ${token}`,
      },
      body: JSON.stringify(body),
    });

    return NextResponse.json(
      payload ?? {
        ok: false,
        error: {
          code: "SERVER_ERROR",
          message: "invalid response from popiartServer",
        },
      },
      { status: response.status },
    );
  } catch (error) {
    return NextResponse.json(
      {
        ok: false,
        error: {
          code: "SERVER_ERROR",
          message: "failed to reach popiartServer",
          details: error instanceof Error ? error.message : String(error),
        },
      },
      { status: 502 },
    );
  }
}