/**
 * 素材库 API（对接 /assets 接口，映射为 MediaAsset 类型）
 */
import apiClient from "../client"
import type { AssetItem } from "../assets"
import type { MediaAsset } from "./types"

const inferMediaType = (mimeType: string): "video" | "image" | "audio" => {
  if (mimeType.startsWith("video/")) return "video"
  if (mimeType.startsWith("image/")) return "image"
  return "audio"
}

const mapAssetToMediaAsset = (asset: AssetItem): MediaAsset => {
  const metaDuration =
    typeof asset.metadata?.duration === "number" ? asset.metadata.duration : undefined
  return {
    id: asset.id,
    name: asset.name,
    type: inferMediaType(asset.mime_type || ""),
    source_url: asset.file_url,
    thumbnail_url: asset.thumbnail_url,
    duration: asset.duration ?? metaDuration,
    size: asset.file_size ?? undefined,
    tags: [],
    created_at: asset.created_at ?? "",
    quality_score: asset.quality_score ?? undefined,
    classification_status: asset.classification_status ?? undefined,
  }
}

/** 获取素材库列表 */
export async function getMediaAssets(libraryId?: string): Promise<MediaAsset[]> {
  const response = await apiClient.get("/assets", {
    params: libraryId ? { library_id: libraryId } : undefined,
  })
  const items: AssetItem[] = response.data.items || []
  return items.map(mapAssetToMediaAsset)
}

/** 获取单个素材 */
export async function getMediaAsset(id: string): Promise<MediaAsset> {
  const response = await apiClient.get(`/assets/${id}`)
  return mapAssetToMediaAsset(response.data)
}