toJson method

Implementation

Map<String, Object?> toJson() {
  switch (role) {
    case AiRole.assistant when toolCalls.isNotEmpty:
      return {
        'role': 'assistant',
        'content': content.isEmpty ? null : content,
        'tool_calls': [for (final t in toolCalls) t.toJson()],
      };
    case AiRole.tool:
      return {'role': 'tool', 'tool_call_id': toolCallId, 'content': content};
    default:
      return {'role': role.name, 'content': content};
  }
}