// 确保 MathJax 配置正确
window.MathJax = window.MathJax || {
  loader: {
    load: ['[tex]/ams', '[tex]/newcommand']
  },
  tex: {
    inlineMath: [['$', '$'], ['\\(', '\\)']],
    displayMath: [['$$', '$$'], ['\\[', '\\]']]
  },
  a11y: {
    texHints: true,
    screenReader: true,
    mathml: {
      enable: true,
    },
    label: {
      enable: true,
      texClass: 'MathJax-Label',
      form: 'LaTeX'
    }
  },
  svg: { fontCache: 'global' }
};

function stripLatexDelimiters(latex) {
  return String(latex || '')
    .trim()
    .replace(/^\$\$/, '')
    .replace(/\$\$$/, '')
    .replace(/^\$/, '')
    .replace(/\$$/, '')
    .trim();
}

/** 按 data-wrap 选择行内 $ 或块级 $$ 分隔符 */
function buildLatexContentForRender(latex, wrapMode) {
  const raw = stripLatexDelimiters(latex);
  if (!raw) return '';
  if (wrapMode === 'inline') {
    return '$' + raw + '$';
  }
  return '$$' + raw + '$$';
}

function prepareWmathElement(element) {
  const latexContent = element.getAttribute('data-latex');
  if (!latexContent) return;
  const wrap = element.getAttribute('data-wrap') || 'block';
  element.innerHTML = buildLatexContentForRender(latexContent, wrap);
}

// **定义全局渲染方法**
window.renderMathJax = function (tinymceId) {
  if (window.MathJax && typeof window.MathJax.typesetPromise === 'function') {
    if (tinymceId) {
      const editorInstance = window.tinymce.get(tinymceId);
      if (!editorInstance) return;

      const editorBody = editorInstance.getBody();
      const wmathElements = editorBody.querySelectorAll('wmath');

      if (wmathElements.length > 0) {
        wmathElements.forEach((element) => {
          prepareWmathElement(element);
          window.MathJax.typesetPromise([element]).catch((err) => {
            console.warn('TinyMCE MathJax 渲染失败:', err);
          });
        });
      }

      const mathElements = editorBody.querySelectorAll('math');
      if (mathElements.length > 0) {
        window.MathJax.typesetPromise(Array.from(mathElements)).catch((err) => {
          console.warn('MathML 渲染失败:', err);
        });
      }
    } else {
      const wmathElements = document.querySelectorAll('wmath');
      wmathElements.forEach((element) => {
        prepareWmathElement(element);
        window.MathJax.typesetPromise([element]).catch((err) => {
          console.warn('MathJax 渲染失败:', err);
        });
      });

      const mathElements = document.querySelectorAll('math');
      mathElements.forEach((element) => {
        window.MathJax.typesetPromise([element]).catch((err) => {
          console.warn('MathJax 渲染失败:', err);
        });
      });
    }
  } else {
    console.warn('MathJax 未正确加载！');
  }
};