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

using System.Collections;

namespace System.DirectoryServices.ActiveDirectory
{
    public class ReplicationConnectionCollection : ReadOnlyCollectionBase
    {
        internal ReplicationConnectionCollection() { }

        public ReplicationConnection this[int index] => (ReplicationConnection)InnerList[index]!;

        public bool Contains(ReplicationConnection connection)
        {
            if (connection == null)
                throw new ArgumentNullException(nameof(connection));

            if (!connection.existingConnection)
                throw new InvalidOperationException(SR.Format(SR.ConnectionNotCommitted, connection.Name));

            string? dn = (string?)PropertyManager.GetPropertyValue(connection.context, connection.cachedDirectoryEntry, PropertyManager.DistinguishedName);

            for (int i = 0; i < InnerList.Count; i++)
            {
                ReplicationConnection tmp = (ReplicationConnection)InnerList[i]!;
                string? tmpDn = (string?)PropertyManager.GetPropertyValue(tmp.context, tmp.cachedDirectoryEntry, PropertyManager.DistinguishedName);

                if (Utils.Compare(tmpDn, dn) == 0)
                {
                    return true;
                }
            }
            return false;
        }

        public int IndexOf(ReplicationConnection connection)
        {
            if (connection == null)
                throw new ArgumentNullException(nameof(connection));

            if (!connection.existingConnection)
                throw new InvalidOperationException(SR.Format(SR.ConnectionNotCommitted, connection.Name));

            string? dn = (string?)PropertyManager.GetPropertyValue(connection.context, connection.cachedDirectoryEntry, PropertyManager.DistinguishedName);

            for (int i = 0; i < InnerList.Count; i++)
            {
                ReplicationConnection tmp = (ReplicationConnection)InnerList[i]!;
                string? tmpDn = (string?)PropertyManager.GetPropertyValue(tmp.context, tmp.cachedDirectoryEntry, PropertyManager.DistinguishedName);

                if (Utils.Compare(tmpDn, dn) == 0)
                {
                    return i;
                }
            }
            return -1;
        }

        public void CopyTo(ReplicationConnection[] connections, int index)
        {
            InnerList.CopyTo(connections, index);
        }

        internal int Add(ReplicationConnection value) => InnerList.Add(value);
    }
}