using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.ObjectModel;
using System.Reflection;
using System.Management.Automation;
using System.Management.Automation.Provider;




namespace Intel.Management.PSModule
{
    /// <summary>
    /// Base definition of an AmtDriveItem
    /// </summary>
    class DriveItem 
    {
        public class Comparer : IComparer<DriveItem>
        {
            public int Compare(DriveItem item1, DriveItem item2)
            {
                return string.Compare(item1.Name, item2.Name, true);
            }
        }

        protected string _name;
        protected object _value;
        protected DriveItem _parent;
        
        // defines an Empty Container
        protected static readonly Comparer _defaultComparer = new Comparer();
        protected static readonly string[] _defaultProperties = new string[0];

        public DriveItem(String name,string value)
        {
            _name = DecodeName(name);
            _value = value;
            _parent = null;
        }

        public DriveItem(String name,DriveItem parent)
        {
            _name = DecodeName(name);
            _value = string.Empty;
            _parent = parent;
        }
    
        public DriveItem(String name,object value,DriveItem parent)
        {
            _name = DecodeName(name);
            _value = value;
            _parent = parent;
        }

        public virtual void Clear()
        {
        }

        public void SetParent(DriveItem newParent)
        {
            _parent = newParent;
        }

        public virtual object GetReturnObject()
        {
            return new DirectoryItem(Name, Value, Properties);
        }

        public DriveItem GetRoot()
        {
            DriveItem parent = _parent;
            while (parent._parent != null)
                parent = parent._parent;

            return parent;
        }

        public virtual void RenameItem(string newName)
        {
            _name =newName;
        }

        public virtual void SetItem(object values, DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual object SetItemDynamicParameters()
        {
            return null;
        }

        public virtual void ClearItem(DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual object GetProperty(Collection<string> propList, DriveProvider provider)
        {
            LoadProperties(provider);
            return GetProperties(propList);
        }

        public virtual void SetProperty(PSObject propertyValue, DriveProvider provider)
        {
            SetProperties(propertyValue);
        }

        public virtual object ClearProperty(Collection<string> propList, DriveProvider providere)
        {
            throw new NotSupportedException();
        }

       

        public virtual void Invoke(DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual object InvokeDefaultActionDynamicParameters()
        {
            return null;
        }

        public virtual DriveItem NewItem(string name, string type, object newItem, DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual object NewItemDynamicParameters(string itemTypeName, object newItemValue)
        {
            return null;
        }

        public virtual void RemoveItem(DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual object GetContentWriterDynamicParameters()
        {
            return null;
        }

        public virtual IContentWriter GetContentWriter( DriveProvider provider)
        {
            throw new NotSupportedException();
        }


        public virtual object GetContentReaderDynamicParameters()
        {
            return null;
        }

        public virtual IContentReader GetContentReader(DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual void ClearContent(DriveProvider provider)
        {
            throw new NotSupportedException();
        }

        public virtual string[] Properties
        {
            get
            {
                return _defaultProperties;
            }
        }
     
        public virtual string Name
        {
            get 
            {
                return EncodeName(_name);
            }
        }

        public virtual object Value
        {
            get { return _value; }
        }


        public static string DecodeName(string name)
        {
          
            if (name.Equals("%00"))
                return string.Empty;

            return name.Replace("%5C", "\\").Replace("%2F", "/").Replace("%2A","*").Replace("%25", "%");
        }

        public static string EncodeName(string name)
        {
            if (name == null)
                return string.Empty;
            if (name.Equals(string.Empty))
                return "%00";

            return name.Replace("%", "%25").Replace("/", "%2F").Replace("\\", "%5C").Replace("*","%2A");
        }

    

        protected virtual void LoadProperties(DriveProvider provider)
        {
        }

        public virtual bool RemoveChildItem(DriveItem item)
        {
            return false;
        }


        public virtual void AddChildItem(DriveItem item)
        {
           
        }


     
        protected void SetProperties(PSObject propertyValue)
        {

            

            foreach (PSPropertyInfo propInfo in propertyValue.Properties)
            {
                PropertyInfo info = FindProperty(propInfo.Name, GetType().GetProperties());

                info.SetValue(this, propInfo.Value, null);
            }
        }

        protected PropertyInfo FindProperty(string name,PropertyInfo[] props)
        {
            PropertyInfo result = null;
            foreach (PropertyInfo info in props)
            {
                if (string.Compare(info.Name, name, true) == 0)
                {
                    result = info;
                    break;
                }
            }

            if (result == null)
                throw new PSArgumentException(
                    string.Format(Intel.Management.PSModule.Properties.Resources.PROPERTY_NOT_FOUND,
                    name,Name));

            return result;
        }

        protected object GetProperties(Collection<string> propList)
        {
            object result = null;
            
            if (propList.Count == 0)//write all properties
            {
                result = new PSObject();

                foreach (string propName in Properties)
                {
                    PropertyInfo info= GetType().GetProperty(propName);
         
                    ((PSObject)result).Properties.Add(
                        new PSNoteProperty(propName,info.GetValue(this, null)));
                }
            }
            else if (propList.Count == 1) //write the value of the one property
            {
                PropertyInfo info = FindProperty(propList[0], GetType().GetProperties());
                return  info.GetValue(this, null);
            }
            else // write the set of propeties
            {
                result = new PSObject();
                foreach (string propName in propList)
                {
                    PropertyInfo info = FindProperty(propList[0], GetType().GetProperties());

                    ((PSObject)result).Properties.Add(
                        new PSNoteProperty(propName, info.GetValue(this, null)));

                }
            }
            return result;
        }

       /* protected object GetProperties(IDictionary<string, object> props, Collection<string> propList)
        {
            object result = null;
            if (propList.Count == 0)
            {
                result = new PSObject();
                //write all the properties
                foreach (KeyValuePair<string, object> pair in props)
                {
                    ((PSObject)result).Properties.Add(
                        new PSNoteProperty(pair.Key, pair.Value));
                }
            }
            else if (propList.Count == 1)
            {
                result = props[propList[0]];
            }
            else
            {
                result = new PSObject();
                foreach (string propName in propList)
                {
                    ((PSObject)result).Properties.Add(
                        new PSNoteProperty(propName, props[propName]));

                }
            }
            return result;
        }*/
 
    }

}