public static DestinationOption ToDestinationOption(this string key, DestinationOption defaultValue = DestinationOption.mg, bool raiseException = false)
{
if (Enum.TryParse(key, true, out DestinationOption value))
{
return(value);
}
else
{
return(raiseException ? throw new ArgumentException($"{key} is not DestinationOption value.") : defaultValue);
}
}
public string[] GetRandomNumbersFor(string number, DestinationOption destinationOption, int amount)
{
using (var context = new CellularDbContext())
{
string[] result;
switch (destinationOption)
{
case DestinationOption.Friends:
var pack = context.Packages.FirstOrDefault(p => p.LineNumber == number);
if (pack != null && pack.IncludesFriends)
{
result = new string[] { pack.Number1, pack.Number2, pack.Number3 };
break;
}
else
{
return(new string[0]);
}
//throw new InvalidOperationException("The given line does not have a package or its does not includ friends. ");
case DestinationOption.All:
result = context.Lines
.Where(l => l.PhoneNumber != number)
.OrderBy(l => Guid.NewGuid())
.Take(amount)
.Select(l => l.PhoneNumber)
.ToArray();
break;
default: throw new NotSupportedException();
}
CompleteToAmount(ref result, amount);
return(result);
}
}
