/**
* Intuitive logic: Organize the powerplants by cost (Ascending low -> high) and use the right amount to have the load.
*
**/
public static IEnumerable <ProductionVm> Calculate(PayloadVm payloads)
{
ICollection <ProductionVm> productionplans = new List <ProductionVm>();
foreach (var powerplant in payloads.Powerplants)
{
//Get the variable cost & update the P values
powerplant.GetUnitCostAndUpdateP(payloads.Fuels);
}
//Rank Up the power plants according to cost metric
payloads.Powerplants = payloads.Powerplants.OrderBy(x => x.UnitCost).ToList();
bool isPossible = payloads.Powerplants.Sum(x => x.Pmax) > payloads.Load;
if (!isPossible)
{
return(null);
}
//Use the minimum of powerplants to produce the needed load
double currentPowerPlantProduction = 0;
double load = payloads.Load;
for (int i = 0; i < payloads.Powerplants.Count; i++)
{
Powerplant currentPowerplant = payloads.Powerplants[i];
Powerplant nextPowerplant = null;
if (i + 1 < payloads.Powerplants.Count)
{
nextPowerplant = payloads.Powerplants[i + 1];
}
currentPowerPlantProduction = 0;
if (load > 0)
{
if (load - currentPowerplant.Pmax >= 0)
{
//Check if the combinaison of the current powerplant and the next powerplant can produce all the current load amount.
if (nextPowerplant != null && load < currentPowerplant.Pmax + nextPowerplant.Pmax && load - currentPowerplant.Pmax < nextPowerplant.Pmin)
{
currentPowerPlantProduction = currentPowerplant.Pmax - nextPowerplant.Pmin;
}
else
{
currentPowerPlantProduction = currentPowerplant.Pmax;
}
load -= currentPowerPlantProduction;
}
else if (load - currentPowerplant.Pmin >= 0)
{
currentPowerPlantProduction = load;
load -= currentPowerPlantProduction;
}
}
currentPowerPlantProduction = Math.Round(currentPowerPlantProduction, 1);
productionplans.Add(new ProductionVm {
PowerplantName = currentPowerplant.Name, Production = currentPowerPlantProduction
});
}
return(productionplans);
}
public ActionResult <IEnumerable <ProductionVm> > GetProduction([FromBody] PayloadVm payloads)
{
var production = ProductionPlanCalculatorExtensions.Calculate(payloads);
if (production == null)
{
return(BadRequest());
}
return(Ok(production));
}
