public async Task <Either <BaseError, Unit> > Handle(
DeleteLocalLibrary request,
CancellationToken cancellationToken)
{
await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
Validation <BaseError, LocalLibrary> validation = await LocalLibraryMustExist(dbContext, request);
return(await LanguageExtensions.Apply(validation, localLibrary => DoDeletion(dbContext, localLibrary)));
}
private static Task <Validation <BaseError, LocalLibrary> > LocalLibraryMustExist(
TvContext dbContext,
DeleteLocalLibrary request) =>
dbContext.LocalLibraries
.SelectOneAsync(ll => ll.Id, ll => ll.Id == request.LocalLibraryId)
.Map(o => o.ToValidation <BaseError>($"Local library {request.LocalLibraryId} does not exist."));
