// Server components call the API directly (container network); the browser uses same-origin /api.
const base = typeof window === 'undefined' ? (process.env.API_INTERNAL_URL ?? 'http://127.0.0.1:3001') : '';

export class ApiError extends Error {
  constructor(
    readonly status: number,
    path: string,
  ) {
    super(`API ${status} for ${path}`);
  }
}

export async function apiGet<T>(path: string): Promise<T> {
  let res: Response;
  try {
    res = await fetch(`${base}${path}`, { cache: 'no-store' });
  } catch {
    throw new ApiError(503, path);
  }
  if (!res.ok) throw new ApiError(res.status, path);
  return (await res.json()) as T;
}

/** Like apiGet, but resolves to null for 404 (unknown player, board …). */
export async function apiFind<T>(path: string): Promise<T | null> {
  try {
    return await apiGet<T>(path);
  } catch (e) {
    if (e instanceof ApiError && e.status === 404) return null;
    throw e;
  }
}

export const avatarUrl = (uuid: string) => `/api/avatar/${uuid}`;