/// <summary>
/// Creates asset from specified filePath and loads it with data (Thumbnail, Size, etc.)
/// </summary>
/// <param name="filePath">Full path to the image file.</param>
/// <returns>Created asset.</returns>
/// <exception cref="ArgumentNullException">If 'filePath' is null or empty.</exception>
/// <exception cref="FileNotFoundException">If file does not exists or cannot be opened.</exception>
/// <exception cref="Exception">If creating fails.</exception>
public Asset Create(string filePath)
{
if (string.IsNullOrWhiteSpace(filePath))
{
throw new ArgumentNullException(nameof(filePath));
}
if (!File.Exists(filePath))
{
throw new FileNotFoundException(filePath);
}
if (_loadedAssets.ContainsKey(filePath))
{
return(_loadedAssets[filePath]);
}
Asset asset = new Asset(filePath);
_assetDataLoader.LoadData(asset);
_loadedAssets.Add(asset.Path, asset);
return(asset);
}
/// <summary>
/// Asynchronously loads stored Asset Group from specified json file. Thumbnails included.
/// </summary>
/// <param name="filePath">Full path to the group json file.</param>
/// <returns>Result of the loading. Output will be empty if not successful.</returns>
public async Task <Result <AssetGroup> > LoadGroupAsync(string filePath)
{
AssetGroup?group = await LoadGroupFromFile(filePath);
if (group is null)
{
return(new Result <AssetGroup>(false, new AssetGroup()));
}
if (group.Assets.Count == 0)
{
_logger.Warning($"[Assset Group Loading] Group '{group.Name}' was loaded, but contains no assets.");
return(new Result <AssetGroup>(false, group));
}
List <Asset> failedAssets = new();
foreach (var asset in group.Assets)
{
try
{
if (!File.Exists(asset.Path))
{
_logger.Warning($"[Assset Group Loading] Cannot load asset '{asset.Path}'. File does not exist. Asset will be removed.");
failedAssets.Add(asset);
}
}
catch (Exception ex) { _logger.Error($"[Assset Group Loading] Failed to check if file exists: {ex.Message}"); }
await Task.Run(() => _assetDataLoader.LoadData(asset));
}
foreach (var asset in failedAssets)
{
group.Assets.Remove(asset);
}
return(new Result <AssetGroup>(true, group));
}