isJsonComplete static method

Implementation

static bool isJsonComplete(String buffer) {
  final clean = buffer.trim();
  if (clean.isEmpty) return false;

  // Direct JSON: starts with { and ends with }
  if (clean.startsWith('{') && clean.endsWith('}')) {
    return _isBalancedJson(clean);
  }

  // Markdown JSON block: ```json...```
  if (clean.contains('```json') && clean.endsWith('```')) {
    return true;
  }

  // Any markdown block: ```...```
  if (clean.startsWith('```') && clean.endsWith('```') && clean.lastIndexOf('```') > clean.indexOf('```')) {
    return true;
  }

  // Tool code block: <tool_code>...</tool_code>
  if (clean.contains('<tool_code>') && clean.contains('</tool_code>')) {
    return true;
  }

  return false;
}