// 替換文字的函數
function replaceText(node, replacements) {
    if (node.nodeType === Node.TEXT_NODE) {
      let text = node.nodeValue;
      for (let [key, value] of Object.entries(replacements)) {
        const regex = new RegExp(key, "g");
        text = text.replace(regex, value);
      }
      node.nodeValue = text;
    } else if (node.nodeType === Node.ELEMENT_NODE) {
      node.childNodes.forEach((child) => replaceText(child, replacements));
    }
  }
  
  // 初始化替換
  function initializeReplacements() {
    chrome.storage.local.get("replacements", (data) => {
      const replacements = data.replacements || {};
      replaceText(document.body, replacements);
  
      // 監控動態內容
      const observer = new MutationObserver((mutations) => {
        mutations.forEach((mutation) => {
          mutation.addedNodes.forEach((node) => {
            if (node.nodeType === Node.ELEMENT_NODE || node.nodeType === Node.TEXT_NODE) {
              replaceText(node, replacements);
            }
          });
        });
      });
      observer.observe(document.body, { childList: true, subtree: true });
    });
  }
  
  initializeReplacements();