klz-cables.com/lib/mdx-utils.ts

export function fixMdxDataProps(content: string): string {
  let fixedContent = content;
  let dataIndex = fixedContent.indexOf('data={{');

  while (dataIndex !== -1) {
    let openCount = 0;
    let endIndex = -1;
    const startObj = dataIndex + 6; // index of the first '{' in 'data={{'

    let inString = false;
    let isEscaped = false;

    for (let i = startObj; i < fixedContent.length; i++) {
      const char = fixedContent[i];

      if (isEscaped) {
        isEscaped = false;
        continue;
      }

      if (char === '\\') {
        isEscaped = true;
        continue;
      }

      if (char === '"') {
        inString = !inString;
        continue;
      }

      if (!inString) {
        if (char === '{') {
          openCount++;
        } else if (char === '}') {
          openCount--;
          if (openCount === 0) {
            endIndex = i;
            break;
          }
        }
      }
    }

    if (endIndex !== -1) {
      // jsonStr is the content INSIDE the outer curly braces
      const jsonStr = fixedContent.substring(startObj + 1, endIndex);
      const safeJsonStr = jsonStr.replace(/"/g, '&quot;');
      const replacement = `data="{${safeJsonStr}}"`;

      // We also need to consume the closing `}` of the `data={{`
      const nextCharIndex = endIndex + 1;
      const skipChars =
        nextCharIndex < fixedContent.length && fixedContent[nextCharIndex] === '}' ? 2 : 1;

      fixedContent =
        fixedContent.substring(0, dataIndex) +
        replacement +
        fixedContent.substring(endIndex + skipChars);

      dataIndex = fixedContent.indexOf('data={{', dataIndex + replacement.length);
    } else {
      // Malformed braces, prevent infinite loop
      break;
    }
  }

  return fixedContent;
}

export function lexicalToMarkdown(node: any, depth = 0): string {
  if (!node) return '';

  if (typeof node === 'string') return node;

  if (node.type === 'text') {
    let text = node.text || '';
    if (node.format === 1) text = `**${text}**`; // Bold
    if (node.format === 2) text = `*${text}*`; // Italic
    return text;
  }

  if (node.type === 'heading') {
    const level = parseInt((node.tag || 'h1').replace('h', '')) || 1;
    const prefix = '#'.repeat(level);
    const text = (node.children || []).map((c: any) => lexicalToMarkdown(c, depth)).join('');
    return `${prefix} ${text}\n\n`;
  }

  if (node.type === 'paragraph') {
    const text = (node.children || []).map((c: any) => lexicalToMarkdown(c, depth)).join('');
    return text.trim() ? `${text}\n\n` : '\n';
  }

  if (node.type === 'list') {
    const isOrdered = node.tag === 'ol';
    const items = (node.children || [])
      .map((c: any, index: number) => {
        const prefix = isOrdered ? `${index + 1}.` : '-';
        return `${prefix} ${lexicalToMarkdown(c, depth + 1).trim()}`;
      })
      .join('\n');
    return `${items}\n\n`;
  }

  if (node.type === 'listitem') {
    return (node.children || []).map((c: any) => lexicalToMarkdown(c, depth)).join('');
  }

  if (node.type === 'quote') {
    const text = (node.children || []).map((c: any) => lexicalToMarkdown(c, depth)).join('');
    return `> ${text}\n\n`;
  }

  if (node.type === 'link') {
    const url = node.fields?.url || node.url || '';
    const text = (node.children || []).map((c: any) => lexicalToMarkdown(c, depth)).join('');
    return `[${text}](${url})`;
  }

  if (node.type === 'upload') {
    const url = node.value?.url || '';
    const alt = node.value?.alt || node.value?.filename || '';
    return `![${alt}](${url})\n\n`;
  }

  if (node.type === 'block') {
    const blockType = node.fields?.blockType;
    if (blockType === 'contactSection') {
      return `<ContactSection showMap={${!!node.fields?.showMap}} showForm={${!!node.fields?.showForm}} showHours={${!!node.fields?.showHours}} />\n\n`;
    }
    if (blockType === 'heroSection') {
      return `<HeroSection badge="${node.fields?.badge || ''}" title="${node.fields?.title || ''}" subtitle="${node.fields?.subtitle || ''}" alignment="${node.fields?.alignment || 'left'}" />\n\n`;
    }
    if (blockType === 'features') {
      return `<FeaturesSection layout="${node.fields?.layout || ''}" />\n\n`;
    }
    // Generic MDX block wrapper if unknown
    return `<Block type="${blockType}" data={${JSON.stringify(node.fields)}} />\n\n`;
  }

  if (node.children && Array.isArray(node.children)) {
    return node.children.map((c: any) => lexicalToMarkdown(c, depth)).join('');
  }

  return '';
}