public static Amount GetNativeAmountForUsage(Ingredient ingredient, IngredientUsage usage)
{
var amount = new Amount();
var usageConvType = Unit.GetConvType(usage.Form.FormUnitType);
switch (ingredient.ConversionType)
{
// This is the type we must convert to
case UnitType.Unit:
amount.Unit = Units.Unit;
switch (usageConvType)
{
case UnitType.Unit:
// Unit to unit version
var equivGrams = UnitConverter.Convert(usage.Form.FormAmount, Units.Gram);
// Grams this form is equivelent to
amount.SizeHigh =
(float)Math.Ceiling((equivGrams.SizeHigh * usage.Amount.SizeHigh) / ingredient.UnitWeight);
return(amount);
case UnitType.Weight:
var grams = UnitConverter.Convert(usage.Amount, Units.Gram);
amount.SizeHigh = (float)Math.Ceiling(grams.SizeHigh / ingredient.UnitWeight);
return(amount);
case UnitType.Volume:
var likeAmount = UnitConverter.Convert(usage.Amount, usage.Form.FormUnitType);
amount.SizeHigh =
(float)
Math.Ceiling(
(likeAmount.SizeHigh * usage.Form.FormAmount.SizeHigh) / usage.Ingredient.UnitWeight);
// Round up when dealing with whole units
return(amount);
}
break;
case UnitType.Weight:
amount.Unit = Units.Gram;
switch (usageConvType)
{
case UnitType.Unit:
amount.SizeHigh = usage.Amount.SizeHigh * usage.Form.FormAmount.SizeHigh;
//NOTE: FormAmount will always be in Grams when Ingredient ConvType is weight
return(amount);
case UnitType.Volume:
var likeAmount = UnitConverter.Convert(usage.Amount, usage.Form.FormUnitType);
amount.SizeHigh = likeAmount.SizeHigh * usage.Form.FormAmount.SizeHigh;
//NOTE: FormAmount will always be in Grams when Ingredient ConvType is weight
return(amount);
}
break;
case UnitType.Volume:
amount.Unit = Units.Teaspoon;
switch (usageConvType)
{
case UnitType.Unit:
amount.SizeHigh = usage.Amount.SizeHigh * usage.Form.FormAmount.SizeHigh;
//NOTE: FormAmount will always be in tsp when Ingredient ConvType is volume
return(amount);
case UnitType.Weight:
var likeAmount = UnitConverter.Convert(usage.Amount, usage.Form.FormUnitType);
amount.SizeHigh = likeAmount.SizeHigh * usage.Form.FormAmount.SizeHigh;
//NOTE: FormAmount will always be in teaspoons when Ingredient ConvType is Volume
return(amount);
}
break;
}
//throw new IngredientAggregationDatabaseException("Cannot convert an IngredientUsage into its native form.", ingredient, usage);
throw new Exception("Cannot convert an IngredientUsage into its native form.");
}