const AUTH = {
  async me() {
    const res = await fetch("/api/auth/me", { credentials: "include" });
    if (!res.ok) return null;
    return res.json();
  },

  async login(username, password) {
    const res = await fetch("/api/auth/login", {
      method: "POST",
      credentials: "include",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ username, password }),
    });
    const data = await res.json().catch(() => ({}));
    if (!res.ok) throw new Error(data.detail || "登录失败");
    return data;
  },

  async logout() {
    await fetch("/api/auth/logout", { method: "POST", credentials: "include" });
  },

  async changeCredentials(payload) {
    const res = await fetch("/api/auth/change-credentials", {
      method: "POST",
      credentials: "include",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(payload),
    });
    const data = await res.json().catch(() => ({}));
    if (!res.ok) throw new Error(data.detail || "修改失败");
    return data;
  },
};