using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace UniversalEditor.ObjectModels.SourceCode.CodeElements
{
    public class CodeEnumerationValue
    {
        public class CodeEnumerationValueCollection
            : System.Collections.ObjectModel.Collection<CodeEnumerationValue>
        {
            public CodeEnumerationValue Add(string name)
            {
                return Add(name, null);
            }
            public CodeEnumerationValue Add(string name, int? value)
            {
                CodeEnumerationValue cev = new CodeEnumerationValue();
                cev.parent = this;
                cev.Name = name;
                if (value != null)
                {
                    cev.Value = value.Value;
                    cev.IsValueDefined = true;
                }
                else
                {
                    cev.IsValueDefined = false;
                }
                Add(cev);
                return cev;
            }
        }

        private CodeEnumerationValueCollection parent = null;

        private string mvarName = String.Empty;
        public string Name { get { return mvarName; } set { mvarName = value; } }

        private bool mvarIsValueDefined = false;
        public bool IsValueDefined { get { return mvarIsValueDefined; } set { mvarIsValueDefined = value; } }

        private int mvarValue = 0;
        public int Value
        {
            get
            {
                if (mvarIsValueDefined) return mvarValue;
                if (parent != null)
                {
                    if (!parent.Contains(this)) throw new InvalidOperationException("not contained in a collection of enums and doesn't have a value set");

                    int index = parent.IndexOf(this) - 1;
                    if (index >= 0) return (parent[index].Value + 1);
                }
                return 0;
            }
            set { mvarValue = value; }
        }
    }
	public class CodeEnumerationElement : CodeElement, INamedCodeElement, IAccessModifiableCodeElement
	{
		public CodeEnumerationElement(string name = null)
		{
			if (name == null)
				name = String.Empty;
			mvarName = name;
		}

        private string mvarName = String.Empty;
        public string Name { get { return mvarName; } set { mvarName = value; } }

        public string GetFullName(string separator = ".")
        {
            return CodeElement.GetFullName(this, separator);
        }

        private CodeEnumerationValue.CodeEnumerationValueCollection mvarValues = new CodeEnumerationValue.CodeEnumerationValueCollection();
        public CodeEnumerationValue.CodeEnumerationValueCollection Values
		{
			get { return mvarValues; }
		}

		private CodeAccessModifiers mvarAccessModifiers = CodeAccessModifiers.None;
		public CodeAccessModifiers AccessModifiers { get { return mvarAccessModifiers; } set { mvarAccessModifiers = value; } }
	}
}