using System;
using System.Collections.Generic;
using System.Xml;
using System.Reflection;

namespace IoCContainer
{
    public class IoCContainer
    {
        private static IDictionary<String,object> beans = new Dictionary<String, object>();
        private static IDictionary<Type, object> typeInstances = new Dictionary<Type, object>();

        public IoCContainer(String xml)
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(xml);
            doc.Normalize();
            XmlNodeList nodeList = doc.GetElementsByTagName("bean");
            for (int nodeCnt = 0; nodeCnt < nodeList.Count; nodeCnt++)
            {
                String nodeClass = null;
                String nodeID = null;
                String attName = null;
                String attVal = null;
                String attRef = null;

                XmlNode auxNode = nodeList[nodeCnt];
                XmlAttributeCollection auxNodeAttributes = auxNode.Attributes;

                for(int attCnt = 0; attCnt < auxNodeAttributes.Count; attCnt++)
                {
                    if(auxNodeAttributes[attCnt].Equals("id"))
                    {
                        nodeID = auxNodeAttributes[attCnt].ToString();
                    }
                    if(auxNodeAttributes[attCnt].Equals("class"))
                    {
                        nodeClass = auxNodeAttributes[attCnt].ToString();
                    }
                }

                Object obj = Activator.CreateInstance(Type.GetType(nodeClass));

                for(int childNodeCnt = 0; childNodeCnt < auxNode.ChildNodes.Count; childNodeCnt++)
                {
                    XmlNode auxChildNode = auxNode.ChildNodes[childNodeCnt];
                    XmlAttributeCollection auxChildNodeAttributes = auxChildNode.Attributes;
                    for(int attCnt = 0; attCnt < auxChildNodeAttributes.Count; attCnt++)
                    {
                        if (auxChildNodeAttributes[attCnt].Equals("value"))
                        {
                            attVal = auxChildNodeAttributes[attCnt].ToString();
                        }
                        if (auxChildNodeAttributes[attCnt].Equals("name"))
                        {
                            attName = auxChildNodeAttributes[attCnt].ToString();
                        }
                        if (auxChildNodeAttributes[attCnt].Equals("ref"))
                        {
                            attRef = auxChildNodeAttributes[attCnt].ToString();
                        }
                    }
                    FieldInfo field = obj.GetType().GetRuntimeField(attName);
                    field.SetValue(obj, attVal);

                    beans.Add(nodeID, obj);
                }
            }


        }
    }
}