import { auth } from "@/app/(auth)/auth";
import { getEnabledAiModelsWithProvider, getDefaultAiModel } from "@/lib/db/queries";
import { ChatSDKError } from "@/lib/errors";

// 获取前端可用的 AI 模型列表（需要登录但不需要管理员权限）
export async function GET() {
  try {
    const session = await auth();

    if (!session?.user) {
      return new ChatSDKError("unauthorized:chat").toResponse();
    }

    // 只获取主模型（不包括子模型），子模型由后端根据 videoParams.mode 自动选择
    const modelsWithProvider = await getEnabledAiModelsWithProvider(false);
    const defaultModel = await getDefaultAiModel();

    // 转换为前端需要的格式
    const models = modelsWithProvider.map(({ model, provider }) => ({
      id: model.id,
      modelId: model.modelId,
      displayName: model.displayName,
      description: model.description,
      supportsVision: model.supportsVision,
      supportsImageGen: model.supportsImageGen,
      isDefault: model.isDefault,
      providerName: provider.name,
      providerType: provider.type,
      isSubModel: model.isSubModel,
      parentModelId: model.parentModelId,
      capabilities: model.capabilities, // 🆕 返回子模型的能力配置
    }));

    return Response.json({
      models,
      defaultModelId: defaultModel?.id ?? models[0]?.id ?? null,
    });
  } catch (error) {
    if (error instanceof ChatSDKError) {
      return error.toResponse();
    }
    return new ChatSDKError("offline:chat").toResponse();
  }
}