import { MotionFormat, PreprocessState, PublishStatus, SourceType } from '../common/enums';
import { Motion } from '../entities/motion.entity';

/** 契约 data-models.md §3 的对外表示 */
export interface MotionDto {
  id: number;
  songId: number | null;
  name: string;
  format: MotionFormat;
  fileUrl: string | null;
  fileSize: number | null;
  fps: number | null;
  frameCount: number | null;
  durationMs: number | null;
  keypointFormat: string | null;
  keypointUrl: string | null;
  /** 骨架缩略图（预处理时生成；T-WEB-014） */
  thumbnailUrl: string | null;
  keypointFrames: number | null;
  preprocessState: PreprocessState;
  preprocessError: string | null;
  sourceType: SourceType;
  sourceName: string;
  sourceUrl: string;
  license: string;
  author: string;
  status: PublishStatus;
  createdAt: string;
  updatedAt: string;
}

export interface MotionUrlLookup {
  fileUrl: string | null;
  keypointUrl: string | null;
  fileSize?: number | null;
  thumbnailUrl: string | null;
}

export function toMotionDto(motion: Motion, urls: MotionUrlLookup): MotionDto {
  return {
    id: motion.id,
    songId: motion.songId,
    name: motion.name,
    format: motion.format,
    fileUrl: urls.fileUrl,
    fileSize: urls.fileSize ?? null,
    fps: motion.fps,
    frameCount: motion.frameCount,
    durationMs: motion.durationMs,
    keypointFormat: motion.keypointFormat,
    keypointUrl: urls.keypointUrl,
    thumbnailUrl: urls.thumbnailUrl,
    keypointFrames: motion.keypointFrames,
    preprocessState: motion.preprocessState,
    preprocessError: motion.preprocessError,
    sourceType: motion.sourceType,
    sourceName: motion.sourceName,
    sourceUrl: motion.sourceUrl,
    license: motion.license,
    author: motion.author,
    status: motion.status,
    createdAt: motion.createdAt.toISOString(),
    updatedAt: motion.updatedAt.toISOString(),
  };
}