using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Encodings.RealVectorEncoding;
using HeuristicLab.Parameters;
using HeuristicLab.PDPSimulation.DomainModel;
using HeuristicLab.PDPSimulation.Operators;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.PDPSimulation {
  [Item("NearestDestinationDispatching", "")]
  [StorableClass]
  public class NearestDestinationDispatching : Dispatching {
    [StorableConstructor]
    protected NearestDestinationDispatching(bool deserializing) : base(deserializing) { }
    protected NearestDestinationDispatching(NearestDestinationDispatching original, Cloner cloner) : base(original, cloner) { }
    public NearestDestinationDispatching() {
    }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new NearestDestinationDispatching(this, cloner);
    }

    protected override void GetHighestPriorityOrder(DynPDPProblemInstance instance, Vehicle vehicle, IEnumerable<Order> orders, out Order order, out double priority) {
      order = orders.OrderBy(o => scenario.DistanceMeasure.GetDistance(vehicle.TargetPositionX, vehicle.TargetPositionY,
        IsPickup(o, instance) ? o.PickupXCoord : o.DeliveryXCoord, 
        IsPickup(o, instance) ? o.PickupYCoord : o.DeliveryYCoord)).First();

      priority = - scenario.DistanceMeasure.GetDistance(vehicle.TargetPositionX, vehicle.TargetPositionY,
        IsPickup(order, instance) ? order.PickupXCoord : order.DeliveryXCoord, 
        IsPickup(order, instance) ? order.PickupYCoord : order.DeliveryYCoord);
    }
  }
}