// utils/cookie.ts

/**
 * 获取指定名称的 Cookie 值
 */
export function getCookie(name: string): string | null {
  const value = `; ${document.cookie}`;
  const parts = value.split(`; ${name}=`);
  if (parts.length === 2) {
    const raw = parts.pop()?.split(';').shift();
    return raw ? decodeURIComponent(raw) : null;
  }
  return null;
}

/**
 * 设置 Cookie
 * @param name 名称
 * @param value 值
 * @param days 有效期（天），不传则为会话 Cookie
 */
export function setCookie(name: string, value: string, days?: number): void {
  let expires = '';
  if (days) {
    const date = new Date();
    date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
    expires = `; expires=${date.toUTCString()}`;
  }
  // 注意：为了安全，实际项目中可根据需要加上 Secure / SameSite 等属性
  document.cookie = `${name}=${encodeURIComponent(value)}${expires}; path=/`;
}

/**
 * 删除 Cookie
 */
export function deleteCookie(name: string): void {
  document.cookie = `${name}=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;`;
}

/**
 * 调试：打印所有可读 Cookie（非 HttpOnly）
 */
export function logAllCookies(): void {
  if (!document.cookie) return;
  const cookies = document.cookie.split('; ').reduce((acc, item) => {
    const eqIndex = item.indexOf('=');
    const key = item.slice(0, eqIndex);
    const value = item.slice(eqIndex + 1);
    acc[key] = decodeURIComponent(value);
    return acc;
  }, {} as Record<string, string>);
  console.table(cookies);
}