/*
 * Copyright (c) 2005-2006 Erik Tigerholm <eriktigerholm@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

namespace OpenTraffic.Model.SignalPlans
{
    using System;
    using System.Collections.Generic;
    using System.Xml.Serialization;

    [XmlInclude(typeof(Fixed))]
    [Serializable]
    public abstract class SignalPlan
    {
        [XmlElement(ElementName = "Id")]
        public string Id { get; set; }

        [XmlElement(ElementName = "Name")]
        public string Name { get; set; }

        [XmlAttribute(AttributeName = "CycleTime")]
        public float CycleTime { get; set; }

        [XmlAttribute(AttributeName = "CycleOffset")]
        public float CycleOffset { get; set; }

        [XmlIgnore]
        public int NumberOfStages
        {
            get { return Stages.Count; }
        }

        public TimeSlice Active { get; set; }

        public List<SignalStage> Stages { get; set; }

        protected SignalPlan()
        {
            Stages = new List<SignalStage>();
        }

        protected SignalPlan(string id, string name, float cycleTime, float cycleOffset, TimeSlice active)
        {
            CycleTime = cycleTime;
            CycleOffset = cycleOffset;
            Active = active;
            this.Name = name;
            this.Id = id;
            Stages = new List<SignalStage>();
        }

        public abstract void BlockTurns(float t);

        public override string ToString()
        {
            return Id + " - " + Name;
        }

        public bool IsActive(float time)
        {
            if (Active.StartTime < Active.StopTime)
            {
                if (time > Active.StartTime && time < Active.StopTime)
                {
                    return true;
                }
            }
            else
            {
                if (time < Active.StartTime || time > Active.StopTime)
                {
                    return true;
                }
            }
            return false;
        }

        public bool InvolvesNode(IntersectionNode n)
        {
            foreach (SignalStage st in Stages)
            {
                if (st.InvolvesNode(n)) return true;
            }
            return false;
        }

        protected int GetStage(float time)
        {
            float t = (time - CycleOffset) % CycleTime;
            float tTot = 0;
            for (int i = 0; i < Stages.Count; i++)
            {
                tTot += Stages[i].Duration;
                if (tTot >= t) return i;
            }
            return 0;
        }
    }
}