public string GetCoffeesSummary()
{
var lines = OfferedCoffees
.OrderBy(x => (string)x.Key)
.Select(x => $"{x.Key}: {x.Value.Name} ({x.Value.Price} per {x.Value.NetWeightPerBag} bag) - {x.Value.Description}");
var sb = new StringBuilder();
foreach (var line in lines)
{
sb.AppendLine(line);
}
return(sb.ToString());
}
public void AddCoffee(OrderReferenceLabel label, Coffee coffee)
{
if (OfferedCoffees.ContainsKey(label))
{
throw new CoffeeLabelAlreadyUsedInRoastingEventException(label);
}
if (OfferedCoffees.Values.Contains(coffee))
{
throw new CoffeeAlreadyAddedToRoastingEventException(coffee);
}
var updatedCoffees = OfferedCoffees.ToDictionary(x => x.Key, x => x.Value);
updatedCoffees.Add(label, coffee);
OfferedCoffees = new ReadOnlyDictionary <OrderReferenceLabel, Coffee>(updatedCoffees);
}