import { ModelFormat, PublishStatus, SourceType } from '../common/enums';
import { CharacterModel } from '../entities/model.entity';

/** 契约 data-models.md §4 的对外表示 */
export interface ModelDto {
  id: number;
  name: string;
  format: ModelFormat;
  vrmVersion: string | null;
  isPrimary: boolean;
  fileUrl: string | null;
  fileSize: number | null;
  /** 模型文件（转换产物）的 sha256 —— 每次转换都会变，仅作记录 */
  fileSha256: string | null;
  /** 上传压缩包的 sha256（稳定）；非压缩包上传为 null，此时以 fileSha256 为准 */
  sourceSha256: string | null;
  thumbnailUrl: string | null;
  /** 由压缩包转换而来时的说明，例如 `Hatsune Miku.pmx → GLB，已内嵌 2 张贴图` */
  conversionNote: string | null;
  sourceType: SourceType;
  sourceName: string;
  sourceUrl: string;
  license: string;
  author: string;
  status: PublishStatus;
  createdAt: string;
  updatedAt: string;
}

export interface ModelUrlLookup {
  fileUrl: string | null;
  thumbnailUrl: string | null;
  fileSize?: number | null;
  fileSha256?: string | null;
  sourceSha256?: string | null;
}

export function toModelDto(model: CharacterModel, urls: ModelUrlLookup): ModelDto {
  return {
    id: model.id,
    name: model.name,
    format: model.format,
    vrmVersion: model.vrmVersion,
    isPrimary: model.isPrimary,
    fileUrl: urls.fileUrl,
    fileSize: urls.fileSize ?? null,
    fileSha256: urls.fileSha256 ?? null,
    sourceSha256: urls.sourceSha256 ?? null,
    thumbnailUrl: urls.thumbnailUrl,
    conversionNote: model.conversionNote ?? null,
    sourceType: model.sourceType,
    sourceName: model.sourceName,
    sourceUrl: model.sourceUrl,
    license: model.license,
    author: model.author,
    status: model.status,
    createdAt: model.createdAt.toISOString(),
    updatedAt: model.updatedAt.toISOString(),
  };
}