// frontend/js/utils/utils.js
function debounce(func, wait) {
  let timeout;
  const debounced = function(...args) {
    const context = this;
    const later = () => {
      clearTimeout(timeout);
      func.apply(context, args);
    };
    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
  };
  debounced.cancel = () => {
    clearTimeout(timeout);
  };
  return debounced;
}
function isValidApiKeyFormat(key) {
  const patterns = [
    // Google Gemini API Key: AIzaSy + 33 characters (alphanumeric, _, -)
    /^AIzaSy[\w-]{33}$/,
    // OpenAI API Key (新格式): sk- + 48 alphanumeric characters
    /^sk-[\w]{48}$/,
    // Google AI Studio Key: gsk_ + alphanumeric & hyphens
    /^gsk_[\w-]{40,}$/,
    // Anthropic API Key (示例): sk-ant-api03- + long string
    /^sk-ant-api\d{2}-[\w-]{80,}$/,
    // Fallback for other potential "sk-" keys with a reasonable length
    /^sk-[\w-]{20,}$/
  ];
  return patterns.some((pattern) => pattern.test(key));
}
function escapeHTML(str) {
  if (typeof str !== "string") {
    return str;
  }
  return str.replace(/[&<>"']/g, function(match) {
    return {
      "&": "&amp;",
      "<": "&lt;",
      ">": "&gt;",
      '"': "&quot;",
      "'": "&#039;"
    }[match];
  });
}

export {
  debounce,
  isValidApiKeyFormat,
  escapeHTML
};