using System;

namespace shiplib
{
    public class Battery : ComponentBase, IEnergyComponent
    {
        [SecondaryStatusMax]
        public readonly double Capacity;
        public readonly double ChargePerSecond;

        [SecondaryStatus]
        public double CurrentCharge;

        public Battery(double capacity, double chargePerSecond /*TODO hex placement ?*/)
        {
            this.Capacity = capacity;
            this.ChargePerSecond = chargePerSecond;
        }

        #region IEnergyComponent
        public EnergyTickOrder Order { get { return EnergyTickOrder.Battery; } }

        public void Tick(EnergySupply supply, double dt)
        {
            if (CurrentCharge == Capacity)
                return;
            double available = supply.TakeAtMostFromAvailable(ChargePerSecond*dt);
            CurrentCharge += available;
            CurrentCharge = Math.Min(CurrentCharge, Capacity);
        }
        #endregion

        public double TakeAtMost(double requestedEnergy)
        {
            double taken = Math.Min(CurrentCharge, requestedEnergy);
            CurrentCharge -= taken;
            return taken;
        }
    }

    class BatteryFactory : IComponentFactory, IBatteryInfo, IComponentInfo, IBuildableComponent
    {

        public double Capacity { get; set; }

        public double ChargePerSecond { get; set; }

        public string Name { get { return "Battery"; } }

        public string Description { get { return "Stores energy."; } }

        public System.Collections.Generic.IEnumerable<HexCoord> Placement { get { return  HexCoord.OneZeroHex; } }

        public ComponentCategory Category { get { return ComponentCategory.Energy; } }

        public double Cost { get { return 100; } }

        public double Weight { get { return 100; } }

        public IComponent Build()
        {
            return new Battery(Capacity, ChargePerSecond);
        }
    }
}