import { computed, ref } from "vue";

const TOKEN_KEY = "mapmil_admin_token";
const ADMIN_BASE = "/admin";

const token = ref<string | null>(localStorage.getItem(TOKEN_KEY));

export function getToken(): string | null {
  return token.value;
}

export function setToken(value: string | null): void {
  token.value = value;
  if (value) localStorage.setItem(TOKEN_KEY, value);
  else localStorage.removeItem(TOKEN_KEY);
}

export function clearToken(): void {
  setToken(null);
}

export const isAuthenticated = computed(() => Boolean(token.value));

export async function login(username: string, password: string): Promise<void> {
  const response = await fetch(`${ADMIN_BASE}/auth/login`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ username, password }),
  });
  if (!response.ok) {
    const message = await response.text();
    throw new Error(message || `Ошибка входа: ${response.status}`);
  }
  const data = (await response.json()) as { access_token: string };
  setToken(data.access_token);
}

export function logout(): void {
  clearToken();
}