从一个相册到另一个相册的PHAsset复制

import Photos

func copyAssets(from sourceAlbum: PHAssetCollection, to destinationAlbum: PHAssetCollection) {
    let fetchOptions = PHFetchOptions()
    let assets = PHAsset.fetchAssets(in: sourceAlbum, options: fetchOptions)
    
    PHPhotoLibrary.shared().performChanges({
        let assetChangeRequest = PHAssetChangeRequest()
        let addAssetRequest = assetChangeRequest.creationRequestForAsset(from: assets)
        let destinationAlbumChangeRequest = PHAssetCollectionChangeRequest(for: destinationAlbum)
        destinationAlbumChangeRequest?.addAssets([addAssetRequest.placeholderForCreatedAsset!] as NSArray)
    }, completionHandler: { success, error in
        if success {
            print("Assets copied successfully.")
        } else {
            print("Error copying assets: \(error?.localizedDescription ?? "")")
        }
    })
}

// 示例用法
let sourceAlbums = PHAssetCollection.fetchAssetCollections(with: .smartAlbum, subtype: .smartAlbumUserLibrary, options: nil)
let destinationAlbums = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: nil)

if let sourceAlbum = sourceAlbums.firstObject, let destinationAlbum = destinationAlbums.firstObject {
    copyAssets(from: sourceAlbum, to: destinationAlbum)
}