// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

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

namespace System.DirectoryServices.AccountManagement
{
    internal sealed class ExtensionHelper
    {
        internal ExtensionHelper(Principal p)
        {
            _p = p;
        }

        private readonly Principal _p;

        internal string RdnPrefix
        {
            get
            {
                DirectoryRdnPrefixAttribute[] MyAttribute =
                (DirectoryRdnPrefixAttribute[])Attribute.GetCustomAttributes(_p.GetType(), typeof(DirectoryRdnPrefixAttribute), false);

                if (MyAttribute == null)
                    return null;

                string defaultRdn = null;

                for (int i = 0; i < MyAttribute.Length; i++)
                {
                    if (MyAttribute[i].Context == null && null == defaultRdn)
                    {
                        defaultRdn = MyAttribute[i].RdnPrefix;
                    }
                    if (_p.ContextType == MyAttribute[i].Context)
                    {
                        return MyAttribute[i].RdnPrefix;
                    }
                }

                return defaultRdn;
            }
        }

        internal static string ReadStructuralObjectClass(Type principalType)
        {
            DirectoryObjectClassAttribute[] MyAttribute =
            (DirectoryObjectClassAttribute[])Attribute.GetCustomAttributes(principalType, typeof(DirectoryObjectClassAttribute), false);

            if (MyAttribute == null)
                return null;

            string defaultObjectClass = null;

            for (int i = 0; i < MyAttribute.Length; i++)
            {
                if (MyAttribute[i].Context == null && null == defaultObjectClass)
                {
                    defaultObjectClass = MyAttribute[i].ObjectClass;
                }
                /*
                if (p.ContextType == MyAttribute[i].Context)
                {
                    return MyAttribute[i].ObjectClass;
                }
                */
            }

            return defaultObjectClass;
        }

        internal string StructuralObjectClass
        {
            get
            {
                DirectoryObjectClassAttribute[] MyAttribute =
                (DirectoryObjectClassAttribute[])Attribute.GetCustomAttributes(_p.GetType(), typeof(DirectoryObjectClassAttribute), false);

                if (MyAttribute == null)
                    return null;

                string defaultObjectClass = null;

                for (int i = 0; i < MyAttribute.Length; i++)
                {
                    if (MyAttribute[i].Context == null && null == defaultObjectClass)
                    {
                        defaultObjectClass = MyAttribute[i].ObjectClass;
                    }
                    if (_p.ContextType == MyAttribute[i].Context)
                    {
                        return MyAttribute[i].ObjectClass;
                    }
                }

                return defaultObjectClass;
            }
        }
        /*
                internal string SchemaAttributeName(string propertyName)
                {
                    System.Reflection.PropertyInfo propInfo = this.GetType().GetProperty(propertyName);

                    if ( null == propInfo )
                        return null;

                    DirectoryPropertyAttribute[] MyAttribute = (DirectoryPropertyAttribute[])Attribute.GetCustomAttributes(propInfo, typeof(DirectoryPropertyAttribute));

                    if (MyAttribute == null)
                        return null;

                    string defaultAttribute = null;

                    for (int i = 0; i < MyAttribute.Length; i++)
                    {
                        if (MyAttribute[i].Context == null)
                        {
                            defaultAttribute = MyAttribute[i].SchemaAttributeName;
                        }
                        if (p.ContextType == MyAttribute[i].Context)
                        {
                            return MyAttribute[i].SchemaAttributeName;
                        }
                    }

                    return defaultAttribute;

                }
        */

    }
}