getToolUseInfo function
Extract tool use info from a normalized message.
Implementation
ToolUseInfo? getToolUseInfo(NormalizedMessage msg) {
if (msg.type != 'assistant') return null;
final content = msg.message['content'];
if (content is! List || content.isEmpty) return null;
final firstBlock = content[0];
if (firstBlock is! Map<String, dynamic>) return null;
if (firstBlock['type'] != 'tool_use') return null;
return ToolUseInfo(
messageId: msg.message['id'] as String? ?? '',
toolUseId: firstBlock['id'] as String? ?? '',
toolName: firstBlock['name'] as String? ?? '',
);
}