public Task <ExistProduct> AddAsync(NewProduct product, CancellationToken cancellationToken = default)
{
var existProduct = new ExistProduct(
_GetFreeId(),
product.Name,
product.Description
);
_db.Add(existProduct.Id, existProduct);
return(Task.FromResult(existProduct));
}
public async Task <ExistProduct> AddAsync(NewProduct product, CancellationToken cancellationToken)
{
var uri = this._filePathFactory.Invoke();
var db = await _reader.Invoke(uri, cancellationToken) ?? new List <ExistProduct>();
var nextId = db.Any() ? db.Max(v => v.Id) + 1 : 1;
var pr = new ExistProduct(nextId, product.Name, product.Description);
db.Add(pr);
await _writer(uri, db, cancellationToken);
return(pr);
}