Function pickModelSelection

packages/studio/src/pages/chat-page-state.ts:64–105

(
  groupedModels: ReadonlyArray<ChatPageModelGroup>,
  selectedModel: string | null,
  selectedService: string | null,
  preference?: ChatPageModelPreference | null,
)

}

export function pickModelSelection(
  groupedModels: ReadonlyArray<ChatPageModelGroup>,
  selectedModel: string | null,
  selectedService: string | null,
  preference?: ChatPageModelPreference | null,
): { model: string; service: string } | null {
  const selectedStillAvailable = selectedModel && selectedService
    ? groupedModels.some((group) =>
        group.service === selectedService
        && group.models.some((model) => model.id === selectedModel),
      )
    : false;
  if (selectedStillAvailable) return null;

  const preferredService = preference?.service?.trim();
  const preferredModel = preference?.model?.trim();
  if (preferredService) {
    const preferredGroup = groupedModels.find((group) => group.service === preferredService);
    const exactModel = preferredModel
      ? preferredGroup?.models.find((model) => model.id === preferredModel)
      : undefined;
    if (preferredGroup && exactModel) {
      return { model: exactModel.id, service: preferredGroup.service };
    }
    const firstPreferredModel = preferredGroup?.models[0];
    if (preferredGroup && firstPreferredModel) {
      return { model: firstPreferredModel.id, service: preferredGroup.service };
    }
  }

  if (preferredModel) {
    for (const group of groupedModels) {
      const exactModel = group.models.find((model) => model.id === preferredModel);
      if (exactModel) return { model: exactModel.id, service: group.service };
    }
  }

  const firstGroup = groupedModels.find((group) => group.models.length > 0);
  const firstModel = firstGroup?.models[0];
  if (!firstGroup || !firstModel) return null;
  return { model: firstModel.id, service: firstGroup.service };
}

export function pickProjectChatSessionId(
  sessions: ReadonlyArray<ChatPageSessionSummary>,