using System;
using System.Collections.Generic;
namespace ln.http.resources
{
    public abstract class ObjectBase
    {
        string name;
        public ObjectBase Container { get; private set; }

        Dictionary<string, ObjectBase> children = new Dictionary<string, ObjectBase>();

        public ObjectBase(string name)
        {
            this.name = name;
        }

        public void Add(ObjectBase child)
        {
            if (children.ContainsKey(child.Name))
                throw new ArgumentException(String.Format("Container already has child with name {0}",child.Name));

            children.Add(child.Name, child);
        }
        public void Remove(ObjectBase child)
        {
            if (child.Container != this)
                throw new ArgumentException("Can't remove child of other container");

            children.Remove(child.Name);
        }
        public bool Contains(string name)
        {
            return children.ContainsKey(name);
        }
        public bool Contains(ObjectBase child)
        {
            return children.ContainsValue(child);
        }

        public IEnumerable<ObjectBase> Children
        {
            get => this.children.Values;
        }

        public String Name {
            get { return this.name; }
            set { 
                if (Container != null)
                {
                    if (Container.Contains(value))
                        throw new ArgumentException("Owning container already has a child with that name");

                    Container.children.Remove(this.name);
                    this.name = value;
                    Container.children.Add(this.name, this);
                }
            }
        }

        public ObjectBase this[string name]
        {
            get
            {
                return children[name];
            }
        }



    }
}