Function selectDefaultModel

packages/oauth/src/managed-kimi-code.ts:659–695

(
  config: ManagedKimiConfigShape,
  models: readonly ManagedKimiCodeModelInfo[],
  options: { readonly preserveExisting: boolean },
)

}

function selectDefaultModel(
  config: ManagedKimiConfigShape,
  models: readonly ManagedKimiCodeModelInfo[],
  options: { readonly preserveExisting: boolean },
): SelectedDefaultModel {
  const firstModel = models[0];
  if (firstModel === undefined) {
    throw new Error('No models available for Kimi Code.');
  }

  const managedModels = new Map(models.map((model) => [managedModelKey(model.id), model]));
  const existingModels = config.models ?? {};
  const currentDefault =
    typeof config.defaultModel === 'string' && config.defaultModel.length > 0
      ? config.defaultModel
      : undefined;

  if (
    options.preserveExisting &&
    currentDefault !== undefined &&
    canPreserveDefaultModel(existingModels, currentDefault, managedModels)
  ) {
    const preservedModel = managedModels.get(currentDefault);
    return {
      modelKey: currentDefault,
      thinking: forcedThinking(
        preservedModel,
        config.thinking?.enabled ?? preservedModel?.supportsReasoning ?? false,
      ),
    };
  }

  return {
    modelKey: managedModelKey(firstModel.id),
    thinking: forcedThinking(firstModel, config.thinking?.enabled ?? firstModel.supportsReasoning),
  };
}

function canPreserveDefaultModel(
  existingModels: Record<string, ManagedKimiModelAlias | Record<string, unknown>>,