namespace OpenTraffic.Model.Simulator.RouteAssigner
{
    using System;
    using System.Collections.Generic;
    using System.Text;
    using OpenTraffic.Model.Route;

    [Serializable]
    public class ShortestPath : Logit
    {
        public ShortestPath()
            : base(-1, true)
        {
        }

        public override Object Clone()
        {
            return new ShortestPath();
        }

        protected override void FillInRoute(Vehicle v)
        {
            if (v != null)
            {
                if (v.trafficRoute == null)
                {
                    base.FillInRoute(v);
                    return;
                }

                List<RouteContainer> routes = RoutesLookup[v.Origin][v.Destination];
                double costMin = double.PositiveInfinity;
                TrafficRoute route = null;
                foreach (RouteContainer rc in routes)
                {

                    TrafficRoute r = rc.GetShortestRoute(v.StartTime, v.routeClass, inResult);

                    // xxx can be removed
                    if (r.Allowed(v.routeClass))
                    {
                        double cost = v.routeClass.CalculateCost(r, inResult, v.StartTime);
                        if (cost < costMin)
                        {
                            route = r;
                            costMin = cost;
                        }
                    }
                }
                v.trafficRoute = route;
            }
        }

        public override string ToString()
        {
            return "Shortest";
        }
    }
}