const BASE_URL = import.meta.env.VITE_SERVER_BASE_URL || "http://localhost:3001";

export async function apiFetch(path, options = {}) {
  const headers = new Headers(options.headers || {});
  if (!headers.has("Accept")) headers.set("Accept", "application/json");

  if (!(options.body instanceof FormData) && options.body != null) {
    headers.set("Content-Type", "application/json");
  }

  // Lazy import to avoid circular deps
  const { getToken } = await import("./extStorage.js");
  const token = await getToken();
  if (token) headers.set("Authorization", `Bearer ${token}`);

  const res = await fetch(`${BASE_URL}${path}`, { ...options, headers });

  const contentType = res.headers.get("content-type") || "";
  const isJson = contentType.includes("application/json");
  const payload = isJson ? await res.json().catch(() => null) : await res.text().catch(() => "");

  if (!res.ok) {
    const message = payload?.message || `HTTP ${res.status}`;
    const err = new Error(message);
    err.status = res.status;
    err.payload = payload;
    throw err;
  }

  return payload;
}