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

namespace LuaInterface
{
    /*
     * Wrapper class for Lua tables
     *
     * Author: Fabio Mascarenhas
     * Version: 1.0
     */
    public class LuaTable : LuaBase
    {
        //internal int _Reference;
        //private Lua _Interpreter;
        public LuaTable(int reference, LuaState interpreter)
        {
            _Reference = reference;
            _Interpreter = interpreter;
        }

        //bool disposed = false;
        //~LuaTable()
        //{
        //    Dispose(false);
        //}

        //public void Dispose()
        //{
        //    Dispose(true);
        //    GC.SuppressFinalize(this);
        //}

        //public virtual void Dispose(bool disposeManagedResources)
        //{
        //    if (!this.disposed)
        //    {
        //        if (disposeManagedResources)
        //        {
        //            if (_Reference != 0)
        //                _Interpreter.dispose(_Reference);
        //        }

        //        disposed = true;
        //    }
        //}
        //~LuaTable()
        //{
        //    _Interpreter.dispose(_Reference);
        //}
        /*
         * Indexer for string fields of the table
         */
        public object this[string field]
        {
            get
            {
                return _Interpreter.getObject(_Reference, field);
            }
            set
            {
                _Interpreter.setObject(_Reference, field, value);
            }
        }
        /*
         * Indexer for numeric fields of the table
         */
        public object this[object field]
        {
            get
            {
                return _Interpreter.getObject(_Reference, field);
            }
            set
            {
                _Interpreter.setObject(_Reference, field, value);
            }
        }


        public System.Collections.IDictionaryEnumerator GetEnumerator()
        {
            return _Interpreter.GetTableDict(this).GetEnumerator();
        }

        public ICollection Keys
        {
            get { return _Interpreter.GetTableDict(this).Keys; }
        }

        public ICollection Values
        {
            get { return _Interpreter.GetTableDict(this).Values; }
        }
		
		public void SetMetaTable(LuaTable metaTable)
		{
			push(_Interpreter.L);
			metaTable.push(_Interpreter.L);
			LuaDLL.lua_setmetatable(_Interpreter.L, -2);
			LuaDLL.lua_pop(_Interpreter.L, 1);
		}

        /*
         * Gets an string fields of a table ignoring its metatable,
         * if it exists
         */
        internal object rawget(string field)
        {
            return _Interpreter.rawGetObject(_Reference, field);
        }

        internal object rawgetFunction(string field)
        {
            object obj = _Interpreter.rawGetObject(_Reference, field);

            if (obj is LuaCSFunction)
                return new LuaFunction((LuaCSFunction)obj, _Interpreter);
            else
                return obj;
        }

        /*
         * Pushes this table into the Lua stack
         */
        public void push(IntPtr luaState)
        {
            LuaDLL.lua_getref(luaState, _Reference);
        }
        public override string ToString()
        {
            return "table";
        }
        //public override bool Equals(object o)
        //{
        //    if (o is LuaTable)
        //    {
        //        LuaTable l = (LuaTable)o;
        //        return _Interpreter.compareRef(l._Reference, _Reference);
        //    }
        //    else return false;
        //}
        //public override int GetHashCode()
        //{
        //    return _Reference;
        //}
    }
}