using System.Xml.Serialization;

namespace ShrlAlgo.RvKits.RvIndependent.MetroGauges.LandXMLData
{
    [XmlType("Units")]
    [Serializable]
    public class Units
    {
        public Units()
        {
            units = new List<Unit>();
        }

        [XmlIgnore]
        public Unit this[int index]
        {
            get
            {
                if (index < units.Count)
                {
                    return units[index];
                }

                throw new IndexOutOfRangeException();
            }
            set
            {
                if (index < units.Count)
                {
                    units[index] = value;
                    return;
                }

                if (index == units.Count)
                {
                    units.Add(value);
                    return;
                }

                throw new IndexOutOfRangeException();
            }
        }

        [XmlIgnore]
        public int Count => units.Count;

        [XmlIgnore]
        public bool IsReadOnly => false;

        [XmlElement("Metric", Type = typeof(Metric))]
        [XmlElement("Imperial", Type = typeof(Imperial))]
        public List<Unit> units { get; set; }

        public void Add(Unit item)
        {
            units.Add(item);
        }

        public void Clear()
        {
            units.Clear();
        }

        public bool Contains(Unit item)
        {
            return units.Contains(item);
        }

        public void CopyTo(Unit[] array, int arrayIndex)
        {
            units.CopyTo(array, arrayIndex);
        }

        public IEnumerator<Unit> GetEnumerator()
        {
            return units.GetEnumerator();
        }

        public int IndexOf(Unit item)
        {
            return units.IndexOf(item);
        }

        public void Insert(int index, Unit item)
        {
            units.Insert(index, item);
        }

        public bool Remove(Unit item)
        {
            return units.Remove(item);
        }

        public void RemoveAt(int index)
        {
            units.RemoveAt(index);
        }
    }
}