public Rarity PickRarity()
{
int randomNumber = randomNumberProvider.GenerateRandomNumber(1, 100);
if (randomNumber <= 0 || randomNumber > 100)
{
throw new GeneratedNumberOutOfRangeException(randomNumber);
}
if (randomNumber <= 55)
{
return(Rarity.Common);
}
else if (randomNumber <= 80)
{
return(Rarity.Uncommon);
}
else if (randomNumber <= 95)
{
return(Rarity.Rare);
}
else if (randomNumber <= 100)
{
return(Rarity.Epic);
}
else
{
throw new InvalidOperationException("Unreachable code reached.");
}
}