private async Task <IEnumerable <string> > RetrieveTagsFromApi(HFileState file)
{
var hash = _imageHasher.GetHash(file).DataHash;
var response = await _fetchHandler.FetchAsync <CureNinjaResponse>($"{_url}{hash}");
return(response.Success ? ResolveResults(response.Results) : Enumerable.Empty <string>());
}
public async Task <IEnumerable <Tag> > FetchTagValues(HFileState file)
{
var tagResult = await Task.WhenAll(_tagSources.Select(source => source.RetrieveTags(file)));
return(tagResult
.Flatten()
.DistinctBy(tag => tag.Id));
}
public FileHash HashImage(HFileState file)
{
using var stream = _physicalImageProvider.LoadFileStream(file);
var hash = _hasher.Hash(stream);
_database.ExecuteQuery(
new SetFileHashQuery(file, new FileHash(hash, null))
);
return(new FileHash(hash, null));
}
public HFile(IDatabase database, IFileHasher hasher, ITagFactory tagFactory, HFileState state)
{
_state = state;
_database = database;
_hasher = hasher;
_tagFactory = tagFactory;
_hash = new Lazy <FileHash>(() => _hasher.GetHash(_state));
_stream = new Lazy <Stream>(() => File.OpenRead(Location));
}
public HFile Create(HFileState state) => new(_database, _hasher, _tagFactory, state);
public SetFileHashQuery(HFileState file, FileHash hash)
{
_file = file;
_hash = hash;
}
public async Task <IEnumerable <Tag> > RetrieveTags(HFileState file)
{
var tags = await RetrieveTagsFromApi(file);
return(tags.Select(_tagMaterialiser.GetOrCreateTag));
}
public DeleteFileQuery(HFileState file)
{
_file = file;
}
static public void DeleteFile(this IDatabase database, HFileState file)
{
database.ExecuteQuery(new DeleteFileQuery(file));
}
public FileStream LoadFileStream(HFileState file)
{
return(File.OpenRead(file.Location));
}
public GetFileHashQuery(HFileState file)
{
_file = file;
}
public RemoveFileTagQuery(HFileState file, TagState tag)
{
_file = file;
_tag = tag;
}
public FileHash GetHash(HFileState file) => _database.ExecuteQuery(new GetFileHashQuery(file)) ?? HashImage(file);
public static void RemoveTagFromFile(this IDatabase database, HFileState file, TagState tag)
{
database.ExecuteQuery(new RemoveFileTagQuery(file, tag));
}
public static bool AddTagToFile(this IDatabase database, HFileState file, TagState tag)
{
return(database.ExecuteQuery(new AddFileTagQuery(file, tag)));
}
// TODO: Add FileTagRepository
public static IEnumerable <TagState> GetTagsForFile(this IDatabase database, HFileState file)
{
return(database.ExecuteQuery(new FetchTagsForFileQuery(file)));
}
public SaveFileQuery(HFileState file)
{
_file = file;
}
public byte[] LoadFile(HFileState file)
{
return(File.ReadAllBytes(file.Location));
}
public AddFileTagQuery(HFileState file, TagState tag)
{
_file = file;
_tag = tag;
}
public FetchTagsForFileQuery(HFileState file)
{
_file = file;
}
