#region References
using Server.Commands;
using Server.Items;
using Server.Misc;
using Server.Mobiles;
using Server.Multis;
using Server.Network;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Xml;
#endregion

namespace Server.Accounting
{
    [PropertyObject]
    public class Account : IAccount, IComparable, IComparable<Account>
    {
        public static readonly TimeSpan YoungDuration = TimeSpan.FromHours(40.0);
        public static readonly TimeSpan InactiveDuration = TimeSpan.FromDays(180.0);
        public static readonly TimeSpan EmptyInactiveDuration = TimeSpan.FromDays(30.0);

        private static MD5CryptoServiceProvider m_MD5HashProvider;
        private static SHA1CryptoServiceProvider m_SHA1HashProvider;
        private static SHA512CryptoServiceProvider m_SHA512HashProvider;
        private static byte[] m_HashBuffer;

        public static void Configure()
        {
            CommandSystem.Register("ConvertCurrency", AccessLevel.Owner, ConvertCurrency);
        }

        private static void ConvertCurrency(CommandEventArgs e)
        {
            e.Mobile.SendMessage(
                "Converting All Banked Gold from {0} to {1}.  Please wait...",
                AccountGold.Enabled ? "checks and coins" : "account treasury",
                AccountGold.Enabled ? "account treasury" : "checks and coins");

            NetState.Pause();

            double found = 0.0, converted = 0.0;

            try
            {
                BankBox box;
                List<Gold> gold;
                List<BankCheck> checks;
                long share = 0, shared;
                int diff;

                foreach (Account a in Accounts.GetAccounts().OfType<Account>().Where(a => a.Count > 0))
                {
                    try
                    {
                        if (!AccountGold.Enabled)
                        {
                            share = (int)Math.Truncate((a.TotalCurrency / a.Count) * CurrencyThreshold);
                            found += a.TotalCurrency * CurrencyThreshold;
                        }

                        foreach (Mobile m in a.m_Mobiles.Where(m => m != null))
                        {
                            box = m.FindBankNoCreate();

                            if (box == null)
                            {
                                continue;
                            }

                            if (AccountGold.Enabled)
                            {
                                foreach (BankCheck o in checks = box.FindItemsByType<BankCheck>())
                                {
                                    found += o.Worth;

                                    if (!a.DepositGold(o.Worth))
                                    {
                                        break;
                                    }

                                    converted += o.Worth;
                                    o.Delete();
                                }

                                checks.Clear();
                                checks.TrimExcess();

                                foreach (Gold o in gold = box.FindItemsByType<Gold>())
                                {
                                    found += o.Amount;

                                    if (!a.DepositGold(o.Amount))
                                    {
                                        break;
                                    }

                                    converted += o.Amount;
                                    o.Delete();
                                }

                                gold.Clear();
                                gold.TrimExcess();
                            }
                            else
                            {
                                shared = share;

                                while (shared > 0)
                                {
                                    if (shared > 60000)
                                    {
                                        diff = (int)Math.Min(10000000, shared);

                                        if (a.WithdrawGold(diff))
                                        {
                                            box.DropItem(new BankCheck(diff));
                                        }
                                        else
                                        {
                                            break;
                                        }
                                    }
                                    else
                                    {
                                        diff = (int)Math.Min(60000, shared);

                                        if (a.WithdrawGold(diff))
                                        {
                                            box.DropItem(new Gold(diff));
                                        }
                                        else
                                        {
                                            break;
                                        }
                                    }

                                    converted += diff;
                                    shared -= diff;
                                }
                            }

                            box.UpdateTotals();
                        }
                    }
                    catch (Exception ex)
                    {
                        Diagnostics.ExceptionLogging.LogException(ex);
                    }
                }
            }
            catch (Exception ex)
            {
                Diagnostics.ExceptionLogging.LogException(ex);
            }

            NetState.Resume();

            e.Mobile.SendMessage("Operation complete: {0:#,0} of {1:#,0} Gold has been converted in total.", converted, found);
        }

        private readonly Mobile[] m_Mobiles;

        private AccessLevel m_AccessLevel;
        private List<AccountComment> m_Comments;
        private List<AccountTag> m_Tags;
        private TimeSpan m_TotalGameTime;
        private Timer m_YoungTimer;

        public Account(string username, string password)
        {
            Username = username;

            SetPassword(password);

            m_AccessLevel = AccessLevel.Player;

            Created = LastLogin = DateTime.UtcNow;
            m_TotalGameTime = TimeSpan.Zero;

            m_Mobiles = new Mobile[7];

            IPRestrictions = new string[0];
            LoginIPs = new IPAddress[0];

            Accounts.Add(this);
        }

        public Account(XmlElement node)
        {
            Username = Utility.GetText(node["username"], "empty");

            string plainPassword = Utility.GetText(node["password"], null);
            string MD5Password = Utility.GetText(node["cryptPassword"], null);
            string SHA1Password = Utility.GetText(node["newCryptPassword"], null);
            string SHA512Password = Utility.GetText(node["newSecureCryptPassword"], null);

            switch (AccountHandler.ProtectPasswords)
            {
                case PasswordProtection.None:
                    {
                        if (plainPassword != null)
                        {
                            SetPassword(plainPassword);
                        }
                        else if (SHA512Password != null)
                        {
                            _SHA512Password = SHA512Password;
                        }
                        else if (SHA1Password != null)
                        {
                            _SHA1Password = SHA1Password;
                        }
                        else if (MD5Password != null)
                        {
                            _MD5Password = MD5Password;
                        }
                        else
                        {
                            SetPassword("empty");
                        }

                        break;
                    }
                case PasswordProtection.Crypt:
                    {
                        if (MD5Password != null)
                        {
                            _MD5Password = MD5Password;
                        }
                        else if (plainPassword != null)
                        {
                            SetPassword(plainPassword);
                        }
                        else if (SHA1Password != null)
                        {
                            _SHA1Password = SHA1Password;
                        }
                        else if (SHA512Password != null)
                        {
                            _SHA512Password = SHA512Password;
                        }
                        else
                        {
                            SetPassword("empty");
                        }

                        break;
                    }
                case PasswordProtection.NewCrypt:
                    {
                        if (SHA1Password != null)
                        {
                            _SHA1Password = SHA1Password;
                        }
                        else if (plainPassword != null)
                        {
                            SetPassword(plainPassword);
                        }
                        else if (MD5Password != null)
                        {
                            _MD5Password = MD5Password;
                        }
                        else if (SHA512Password != null)
                        {
                            _SHA512Password = SHA512Password;
                        }
                        else
                        {
                            SetPassword("empty");
                        }

                        break;
                    }
                default: // PasswordProtection.NewSecureCrypt
                    {
                        if (SHA512Password != null)
                        {
                            _SHA512Password = SHA512Password;
                        }
                        else if (plainPassword != null)
                        {
                            SetPassword(plainPassword);
                        }
                        else if (SHA1Password != null)
                        {
                            _SHA1Password = SHA1Password;
                        }
                        else if (MD5Password != null)
                        {
                            _MD5Password = MD5Password;
                        }
                        else
                        {
                            SetPassword("empty");
                        }

                        break;
                    }
            }

            Enum.TryParse(Utility.GetText(node["accessLevel"], "Player"), true, out m_AccessLevel);

            Flags = Utility.GetXMLInt32(Utility.GetText(node["flags"], "0"), 0);
            Created = Utility.GetXMLDateTime(Utility.GetText(node["created"], null), DateTime.UtcNow);
            LastLogin = Utility.GetXMLDateTime(Utility.GetText(node["lastLogin"], null), DateTime.UtcNow);

            TotalCurrency = Utility.GetXMLDouble(Utility.GetText(node["totalCurrency"], "0"), 0);
            Sovereigns = Utility.GetXMLInt32(Utility.GetText(node["sovereigns"], "0"), 0);

            m_Mobiles = LoadMobiles(node);
            m_Comments = LoadComments(node);
            m_Tags = LoadTags(node);
            LoginIPs = LoadAddressList(node);
            IPRestrictions = LoadAccessCheck(node);

            foreach (Mobile m in m_Mobiles.Where(m => m != null))
            {
                m.Account = this;
            }

            TimeSpan totalGameTime = Utility.GetXMLTimeSpan(Utility.GetText(node["totalGameTime"], null), TimeSpan.Zero);

            if (totalGameTime == TimeSpan.Zero)
            {
                totalGameTime = m_Mobiles.OfType<PlayerMobile>().Aggregate(totalGameTime, (current, m) => current + m.GameTime);
            }

            m_TotalGameTime = totalGameTime;

            if (Young)
            {
                CheckYoung();
            }

            LoadSecureAccounts(node);

            Accounts.Add(this);
        }

        /// <summary>
        /// Deserializes a list of secure account balances, and converts it to a dictionary containing the account characters
        /// </summary>
        /// <param name="node"></param>
        public void LoadSecureAccounts(XmlElement node)
        {
            int[] list = new int[7];
            XmlElement chars = node["SecureAccounts"];

            if (chars != null)
            {
                foreach (XmlElement ele in chars.GetElementsByTagName("char"))
                {
                    try
                    {
                        int index = Utility.GetXMLInt32(Utility.GetAttribute(ele, "index", "0"), 0);
                        int balance = Utility.GetXMLInt32(Utility.GetText(ele, "0"), 0);

                        if (balance > 0 && index >= 0 && index < list.Length && index < m_Mobiles.Length)
                        {
                            if (SecureAccounts == null)
                                SecureAccounts = new Dictionary<Mobile, int>();

                            SecureAccounts[m_Mobiles[index]] = balance;
                        }
                    }
                    catch (Exception ex)
                    {
                        Diagnostics.ExceptionLogging.LogException(ex);
                    }
                }
            }
        }

        /// <summary>
        ///     Object detailing information about the hardware of the last person to log into this account
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public HardwareInfo HardwareInfo { get; set; }

        /// <summary>
        ///     List of IP addresses for restricted access. '*' wildcard supported. If the array contains zero entries, all IP
        ///     addresses are allowed.
        /// </summary>
        public string[] IPRestrictions { get; set; }

        /// <summary>
        ///     List of IP addresses which have successfully logged into this account.
        /// </summary>
        public IPAddress[] LoginIPs { get; set; }

        /// <summary>
        ///     List of account comments. Type of contained objects is AccountComment.
        /// </summary>
        public List<AccountComment> Comments => m_Comments ?? (m_Comments = new List<AccountComment>());

        /// <summary>
        ///     List of account tags. Type of contained objects is AccountTag.
        /// </summary>
        public List<AccountTag> Tags => m_Tags ?? (m_Tags = new List<AccountTag>());

        /// <summary>
        ///     Account password. Plain text. Case sensitive validation. May be null.
        /// </summary>
        public string PlainPassword { get; set; }

        /// <summary>
        ///     Account password. Hashed with MD5. May be null.
        /// </summary>
        public string _MD5Password { get; set; }

        /// <summary>
        ///     Account username and password hashed with SHA1. May be null.
        /// </summary>
        public string _SHA1Password { get; set; }

        /// <summary>
        ///     Account username and password hashed with SHA512. May be null.
        /// </summary>
        public string _SHA512Password { get; set; }

        /// <summary>
        ///     Internal bitfield of account flags. Consider using direct access properties (Banned, Young), or GetFlag/SetFlag
        ///     methods
        /// </summary>
        public int Flags { get; set; }

        /// <summary>
        ///     Gets or sets a flag indiciating if this account is banned.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public bool Banned
        {
            get
            {
                bool isBanned = GetFlag(0);

                if (!isBanned)
                {
                    return false;
                }

                DateTime banTime;
                TimeSpan banDuration;

                if (!GetBanTags(out banTime, out banDuration) || banDuration == TimeSpan.MaxValue ||
                    DateTime.UtcNow < (banTime + banDuration))
                {
                    return true;
                }

                SetUnspecifiedBan(null); // clear
                Banned = false;
                return false;
            }
            set { SetFlag(0, value); }
        }

        /// <summary>
        ///     Gets or sets a flag indicating if the characters created on this account will have the young status.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public bool Young
        {
            get { return !GetFlag(1); }
            set
            {
                SetFlag(1, !value);

                if (m_YoungTimer == null)
                {
                    return;
                }

                m_YoungTimer.Stop();
                m_YoungTimer = null;
            }
        }

        /// <summary>
        ///     The date and time of when this account was created.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator, true)]
        public DateTime Created { get; set; }

        [CommandProperty(AccessLevel.Administrator)]
        public TimeSpan Age => DateTime.UtcNow - Created;

        /// <summary>
        ///     Gets or sets the date and time when this account was last accessed.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public DateTime LastLogin { get; set; }

        /// <summary>
        ///     An account is considered inactive based upon LastLogin and InactiveDuration.  If the account is empty, it is based
        ///     upon EmptyInactiveDuration
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public bool Inactive
        {
            get
            {
                if (AccessLevel >= AccessLevel.Counselor)
                {
                    return false;
                }

                TimeSpan inactiveLength = DateTime.UtcNow - LastLogin;

                return inactiveLength > (Count == 0 ? EmptyInactiveDuration : InactiveDuration);
            }
        }

        /// <summary>
        ///     Gets the total game time of this account, also considering the game time of characters
        ///     that have been deleted.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public TimeSpan TotalGameTime
        {
            get
            {
                var online = m_Mobiles.OfType<PlayerMobile>().FirstOrDefault(pm => pm.NetState != null);

                if (online != null)
                {
                    return m_TotalGameTime + (DateTime.UtcNow - online.SessionStart);
                }

                return m_TotalGameTime;
            }
        }

        /// <summary>
        ///     Account username. Case insensitive validation.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator, true)]
        public string Username { get; set; }

        /// <summary>
        ///     Account email address. Case insensitive validation.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator, true)]
        public string Email { get; set; }

        /// <summary>
        ///     Initial AccessLevel for new characters created on this account.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator, AccessLevel.Owner)]
        public AccessLevel AccessLevel { get { return m_AccessLevel; } set { m_AccessLevel = value; } }

        /// <summary>
        ///     Gets the current number of characters on this account.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public int Count
        {
            get
            {
                int count = 0;

                for (int i = 0; i < Length; ++i)
                {
                    if (this[i] != null)
                    {
                        ++count;
                    }
                }

                return count;
            }
        }

        /// <summary>
        ///     Gets the maximum amount of characters allowed to be created on this account. Values other than 1, 5, 6, or 7 are
        ///     not supported by the client.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public int Limit => (Siege.SiegeShard ? Siege.CharacterSlots : 7);

        /// <summary>
        ///     Gets the maxmimum amount of characters that this account can hold.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public int Length => m_Mobiles.Length;

        /// <summary>
        ///     Gets or sets the character at a specified index for this account.
        ///     Out of bound index values are handled; null returned for get, ignored for set.
        /// </summary>
        public Mobile this[int index]
        {
            get
            {
                if (index < 0 || index >= m_Mobiles.Length)
                {
                    return null;
                }

                Mobile m = m_Mobiles[index];

                if (m == null || !m.Deleted)
                {
                    return m;
                }

                m.Account = null;
                m_Mobiles[index] = null;
                return null;
            }
            set
            {
                if (index < 0 || index >= m_Mobiles.Length)
                {
                    return;
                }

                if (m_Mobiles[index] != null)
                {
                    m_Mobiles[index].Account = null;
                }

                m_Mobiles[index] = value;

                if (m_Mobiles[index] != null)
                {
                    m_Mobiles[index].Account = this;
                }
            }
        }

        /// <summary>
        ///     Deletes the account, all characters of the account, and all houses of those characters
        /// </summary>
        public void Delete()
        {
            for (int i = 0; i < Length; ++i)
            {
                Mobile m = this[i];

                if (m == null)
                {
                    continue;
                }

                List<BaseHouse> list = BaseHouse.GetHouses(m);

                foreach (BaseHouse h in list)
                {
                    h.Delete();
                }

                ColUtility.Free(list);

                m.Delete();

                m.Account = null;
                m_Mobiles[i] = null;
            }

            if (LoginIPs.Length != 0 && AccountHandler.IPTable.ContainsKey(LoginIPs[0]))
            {
                --AccountHandler.IPTable[LoginIPs[0]];
            }

            Accounts.Remove(Username);
        }

        public void SetPassword(string plainPassword)
        {
            switch (AccountHandler.ProtectPasswords)
            {
                case PasswordProtection.None:
                    {
                        PlainPassword = plainPassword;
                        _MD5Password = null;
                        _SHA1Password = null;
                        _SHA512Password = null;
                    }
                    break;
                case PasswordProtection.Crypt:
                    {
                        PlainPassword = null;
                        _MD5Password = HashMD5(plainPassword);
                        _SHA1Password = null;
                        _SHA512Password = null;
                    }
                    break;
                case PasswordProtection.NewCrypt:
                    {
                        PlainPassword = null;
                        _MD5Password = null;
                        _SHA1Password = HashSHA1(Username + plainPassword);
                        _SHA512Password = null;
                    }
                    break;
                default: // PasswordProtection.NewSecureCrypt
                    {
                        PlainPassword = null;
                        _MD5Password = null;
                        _SHA1Password = null;
                        _SHA512Password = HashSHA512(Username + plainPassword);
                    }
                    break;
            }
        }

        public bool CheckPassword(string plainPassword)
        {
            bool ok;
            PasswordProtection curProt;

            if (PlainPassword != null)
            {
                ok = (PlainPassword == plainPassword);
                curProt = PasswordProtection.None;
            }
            else if (_MD5Password != null)
            {
                ok = (_MD5Password == HashMD5(plainPassword));
                curProt = PasswordProtection.Crypt;
            }
            else if (_SHA1Password != null)
            {
                ok = (_SHA1Password == HashSHA1(Username + plainPassword));
                curProt = PasswordProtection.NewCrypt;
            }
            else
            {
                ok = (_SHA512Password == HashSHA512(Username + plainPassword));
                curProt = PasswordProtection.NewSecureCrypt;
            }

            if (ok && curProt != AccountHandler.ProtectPasswords)
            {
                SetPassword(plainPassword);
            }

            return ok;
        }

        public int CompareTo(IAccount other)
        {
            if (other == null)
            {
                return 1;
            }

            return string.Compare(Username, other.Username, StringComparison.Ordinal);
        }

        public int CompareTo(object obj)
        {
            if (obj is Account)
            {
                return CompareTo((Account)obj);
            }

            throw new ArgumentException();
        }

        public int CompareTo(Account other)
        {
            if (other == null)
            {
                return 1;
            }

            return string.Compare(Username, other.Username, StringComparison.Ordinal);
        }

        public static string HashMD5(string phrase)
        {
            if (m_MD5HashProvider == null)
            {
                m_MD5HashProvider = new MD5CryptoServiceProvider();
            }

            if (m_HashBuffer == null)
            {
                m_HashBuffer = new byte[256];
            }

            int length = Encoding.ASCII.GetBytes(phrase, 0, phrase.Length > 256 ? 256 : phrase.Length, m_HashBuffer, 0);
            byte[] hashed = m_MD5HashProvider.ComputeHash(m_HashBuffer, 0, length);

            return BitConverter.ToString(hashed);
        }

        public static string HashSHA1(string phrase)
        {
            if (m_SHA1HashProvider == null)
            {
                m_SHA1HashProvider = new SHA1CryptoServiceProvider();
            }

            if (m_HashBuffer == null)
            {
                m_HashBuffer = new byte[256];
            }

            int length = Encoding.ASCII.GetBytes(phrase, 0, phrase.Length > 256 ? 256 : phrase.Length, m_HashBuffer, 0);
            byte[] hashed = m_SHA1HashProvider.ComputeHash(m_HashBuffer, 0, length);

            return BitConverter.ToString(hashed);
        }

        public static string HashSHA512(string phrase)
        {
            if (m_SHA512HashProvider == null)
            {
                m_SHA512HashProvider = new SHA512CryptoServiceProvider();
            }

            if (m_HashBuffer == null)
            {
                m_HashBuffer = new byte[256];
            }

            int length = Encoding.ASCII.GetBytes(phrase, 0, phrase.Length > 256 ? 256 : phrase.Length, m_HashBuffer, 0);
            byte[] hashed = m_SHA512HashProvider.ComputeHash(m_HashBuffer, 0, length);

            return BitConverter.ToString(hashed);
        }

        public static void Initialize()
        {
            EventSink.Connected += EventSink_Connected;
            EventSink.Disconnected += EventSink_Disconnected;
            EventSink.Login += EventSink_Login;
        }

        /// <summary>
        ///     Deserializes a list of string values from an xml element. Null values are not added to the list.
        /// </summary>
        /// <param name="node">The XmlElement from which to deserialize.</param>
        /// <returns>String list. Value will never be null.</returns>
        public static string[] LoadAccessCheck(XmlElement node)
        {
            string[] stringList;
            XmlElement accessCheck = node["accessCheck"];

            if (accessCheck != null)
            {
                stringList =
                    accessCheck.GetElementsByTagName("ip")
                               .Cast<XmlElement>()
                               .Select(ip => Utility.GetText(ip, null))
                               .Where(text => text != null)
                               .ToArray();
            }
            else
            {
                stringList = new string[0];
            }

            return stringList;
        }

        /// <summary>
        ///     Deserializes a list of IPAddress values from an xml element.
        /// </summary>
        /// <param name="node">The XmlElement from which to deserialize.</param>
        /// <returns>Address list. Value will never be null.</returns>
        public static IPAddress[] LoadAddressList(XmlElement node)
        {
            IPAddress[] list;
            XmlElement addressList = node["addressList"];

            if (addressList != null)
            {
                int count = Utility.GetXMLInt32(Utility.GetAttribute(addressList, "count", "0"), 0);

                list = new IPAddress[count];

                count = 0;

                foreach (XmlElement ip in addressList.GetElementsByTagName("ip").Cast<XmlElement>().Where(ip => count < list.Length))
                {
                    IPAddress address;

                    if (!IPAddress.TryParse(Utility.GetText(ip, null), out address))
                    {
                        continue;
                    }

                    list[count] = Utility.Intern(address);
                    count++;
                }

                if (count == list.Length)
                {
                    return list;
                }

                IPAddress[] old = list;
                list = new IPAddress[count];

                for (int i = 0; i < count && i < old.Length; ++i)
                {
                    list[i] = old[i];
                }
            }
            else
            {
                list = new IPAddress[0];
            }

            return list;
        }

        /// <summary>
        ///     Deserializes a list of Mobile instances from an xml element.
        /// </summary>
        /// <param name="node">The XmlElement instance from which to deserialize.</param>
        /// <returns>Mobile list. Value will never be null.</returns>
        public static Mobile[] LoadMobiles(XmlElement node)
        {
            Mobile[] list = new Mobile[7];
            XmlElement chars = node["chars"];

            //int length = Accounts.GetInt32( Accounts.GetAttribute( chars, "length", "6" ), 6 );
            //list = new Mobile[length];
            //Above is legacy, no longer used

            if (chars == null)
            {
                return list;
            }

            foreach (XmlElement ele in chars.GetElementsByTagName("char"))
            {
                try
                {
                    int index = Utility.GetXMLInt32(Utility.GetAttribute(ele, "index", "0"), 0);
                    int serial = Utility.GetXMLInt32(Utility.GetText(ele, "0"), 0);

                    if (index >= 0 && index < list.Length)
                    {
                        list[index] = World.FindMobile(serial);
                    }
                }
                catch (Exception e)
                {
                    Diagnostics.ExceptionLogging.LogException(e);
                }
            }

            return list;
        }

        /// <summary>
        ///     Deserializes a list of AccountComment instances from an xml element.
        /// </summary>
        /// <param name="node">The XmlElement from which to deserialize.</param>
        /// <returns>Comment list. Value will never be null.</returns>
        public static List<AccountComment> LoadComments(XmlElement node)
        {
            XmlElement comments = node["comments"];

            if (comments == null)
            {
                return null;
            }

            List<AccountComment> list = new List<AccountComment>();

            foreach (XmlElement comment in comments.GetElementsByTagName("comment"))
            {
                try
                {
                    list.Add(new AccountComment(comment));
                }
                catch (Exception e)
                {
                    Diagnostics.ExceptionLogging.LogException(e);
                }
            }

            return list;
        }

        /// <summary>
        ///     Deserializes a list of AccountTag instances from an xml element.
        /// </summary>
        /// <param name="node">The XmlElement from which to deserialize.</param>
        /// <returns>Tag list. Value will never be null.</returns>
        public static List<AccountTag> LoadTags(XmlElement node)
        {
            XmlElement tags = node["tags"];

            if (tags == null)
            {
                return null;
            }

            List<AccountTag> list = new List<AccountTag>();

            foreach (XmlElement tag in tags.GetElementsByTagName("tag"))
            {
                try
                {
                    list.Add(new AccountTag(tag));
                }
                catch (Exception e)
                {
                    Diagnostics.ExceptionLogging.LogException(e);
                }
            }

            return list;
        }

        /// <summary>
        ///     Gets the value of a specific flag in the Flags bitfield.
        /// </summary>
        /// <param name="index">The zero-based flag index.</param>
        public bool GetFlag(int index)
        {
            return (Flags & (1 << index)) != 0;
        }

        /// <summary>
        ///     Sets the value of a specific flag in the Flags bitfield.
        /// </summary>
        /// <param name="index">The zero-based flag index.</param>
        /// <param name="value">The value to set.</param>
        public void SetFlag(int index, bool value)
        {
            if (value)
            {
                Flags |= (1 << index);
            }
            else
            {
                Flags &= ~(1 << index);
            }
        }

        /// <summary>
        ///     Adds a new tag to this account. This method does not check for duplicate names.
        /// </summary>
        /// <param name="name">New tag name.</param>
        /// <param name="value">New tag value.</param>
        public void AddTag(string name, string value)
        {
            Tags.Add(new AccountTag(name, value));
        }

        /// <summary>
        ///     Removes all tags with the specified name from this account.
        /// </summary>
        /// <param name="name">Tag name to remove.</param>
        public void RemoveTag(string name)
        {
            for (int i = Tags.Count - 1; i >= 0; --i)
            {
                if (i >= Tags.Count)
                {
                    continue;
                }

                AccountTag tag = Tags[i];

                if (tag.Name == name)
                {
                    Tags.RemoveAt(i);
                }
            }
        }

        /// <summary>
        ///     Modifies an existing tag or adds a new tag if no tag exists.
        /// </summary>
        /// <param name="name">Tag name.</param>
        /// <param name="value">Tag value.</param>
        public void SetTag(string name, string value)
        {
            var tag = Tags.FirstOrDefault(t => t.Name == name);

            if (tag != null)
            {
                tag.Value = value;
            }
            else
            {
                AddTag(name, value);
            }
        }

        /// <summary>
        ///     Gets the value of a tag -or- null if there are no tags with the specified name.
        /// </summary>
        /// <param name="name">Name of the desired tag value.</param>
        public string GetTag(string name)
        {
            return Tags.Where(tag => tag.Name == name).Select(tag => tag.Value).FirstOrDefault();
        }

        public void SetUnspecifiedBan(Mobile from)
        {
            SetBanTags(from, DateTime.MinValue, TimeSpan.Zero);
        }

        public void SetBanTags(Mobile from, DateTime banTime, TimeSpan banDuration)
        {
            if (from == null)
            {
                RemoveTag("BanDealer");
            }
            else
            {
                SetTag("BanDealer", from.ToString());
            }

            if (banTime == DateTime.MinValue)
            {
                RemoveTag("BanTime");
            }
            else
            {
                SetTag("BanTime", XmlConvert.ToString(banTime, XmlDateTimeSerializationMode.Utc));
            }

            if (banDuration == TimeSpan.Zero)
            {
                RemoveTag("BanDuration");
            }
            else
            {
                SetTag("BanDuration", banDuration.ToString());
            }
        }

        public bool GetBanTags(out DateTime banTime, out TimeSpan banDuration)
        {
            string tagTime = GetTag("BanTime");
            string tagDuration = GetTag("BanDuration");

            banTime = tagTime != null ? Utility.GetXMLDateTime(tagTime, DateTime.MinValue) : DateTime.MinValue;

            if (tagDuration == "Infinite")
            {
                banDuration = TimeSpan.MaxValue;
            }
            else if (tagDuration != null)
            {
                banDuration = Utility.ToTimeSpan(tagDuration);
            }
            else
            {
                banDuration = TimeSpan.Zero;
            }

            return banTime != DateTime.MinValue && banDuration != TimeSpan.Zero;
        }

        public void RemoveYoungStatus(int message)
        {
            Young = false;

            foreach (PlayerMobile m in m_Mobiles.OfType<PlayerMobile>().Where(m => m.Young))
            {
                m.Young = false;

                if (m.NetState == null)
                {
                    continue;
                }

                if (message > 0)
                {
                    m.SendLocalizedMessage(message);
                }

                m.SendLocalizedMessage(1019039);
                // You are no longer considered a young player of Ultima Online, and are no longer subject to the limitations and benefits of being in that caste.
            }
        }

        public void CheckYoung()
        {
            if (TotalGameTime >= YoungDuration)
            {
                RemoveYoungStatus(1019038);
                // You are old enough to be considered an adult, and have outgrown your status as a young player!
            }
        }

        /// <summary>
        ///     Checks if a specific NetState is allowed access to this account.
        /// </summary>
        /// <param name="ns">NetState instance to check.</param>
        /// <returns>True if allowed, false if not.</returns>
        public bool HasAccess(NetState ns)
        {
            return (ns != null && HasAccess(ns.Address));
        }

        public bool HasAccess(IPAddress ipAddress)
        {
            AccessLevel level = AccountHandler.LockdownLevel;

            if (level >= AccessLevel.Counselor)
            {
                bool hasAccess = false;

                if (m_AccessLevel >= level)
                {
                    hasAccess = true;
                }
                else
                {
                    for (int i = 0; !hasAccess && i < Length; ++i)
                    {
                        Mobile m = this[i];

                        if (m != null && m.AccessLevel >= level)
                        {
                            hasAccess = true;
                        }
                    }
                }

                if (!hasAccess)
                {
                    return false;
                }
            }

            bool accessAllowed = IPRestrictions.Length == 0 || IPLimiter.IsExempt(ipAddress);

            for (int i = 0; !accessAllowed && i < IPRestrictions.Length; ++i)
            {
                accessAllowed = Utility.IPMatch(IPRestrictions[i], ipAddress);
            }

            return accessAllowed;
        }

        /// <summary>
        ///     Records the IP address of 'ns' in its 'LoginIPs' list.
        /// </summary>
        /// <param name="ns">NetState instance to record.</param>
        public void LogAccess(NetState ns)
        {
            if (ns != null)
            {
                LogAccess(ns.Address);
            }
        }

        public void LogAccess(IPAddress ipAddress)
        {
            if (IPLimiter.IsExempt(ipAddress))
            {
                return;
            }

            if (LoginIPs.Length == 0)
            {
                if (AccountHandler.IPTable.ContainsKey(ipAddress))
                {
                    AccountHandler.IPTable[ipAddress]++;
                }
                else
                {
                    AccountHandler.IPTable[ipAddress] = 1;
                }
            }

            bool contains = false;

            for (int i = 0; !contains && i < LoginIPs.Length; ++i)
            {
                contains = LoginIPs[i].Equals(ipAddress);
            }

            if (contains)
            {
                return;
            }

            IPAddress[] old = LoginIPs;
            LoginIPs = new IPAddress[old.Length + 1];

            for (int i = 0; i < old.Length; ++i)
            {
                LoginIPs[i] = old[i];
            }

            LoginIPs[old.Length] = ipAddress;
        }

        /// <summary>
        ///     Checks if a specific NetState is allowed access to this account. If true, the NetState IPAddress is added to the
        ///     address list.
        /// </summary>
        /// <param name="ns">NetState instance to check.</param>
        /// <returns>True if allowed, false if not.</returns>
        public bool CheckAccess(NetState ns)
        {
            return (ns != null && CheckAccess(ns.Address));
        }

        public bool CheckAccess(IPAddress ipAddress)
        {
            bool hasAccess = HasAccess(ipAddress);

            if (hasAccess)
            {
                LogAccess(ipAddress);
            }

            return hasAccess;
        }

        /// <summary>
        ///     Serializes this Account instance to an XmlTextWriter.
        /// </summary>
        /// <param name="xml">The XmlTextWriter instance from which to serialize.</param>
        public void Save(XmlTextWriter xml)
        {
            xml.WriteStartElement("account");

            xml.WriteStartElement("username");
            xml.WriteString(Username);
            xml.WriteEndElement();

            if (PlainPassword != null)
            {
                xml.WriteStartElement("password");
                xml.WriteString(PlainPassword);
                xml.WriteEndElement();
            }

            if (_MD5Password != null)
            {
                xml.WriteStartElement("cryptPassword");
                xml.WriteString(_MD5Password);
                xml.WriteEndElement();
            }

            if (_SHA1Password != null)
            {
                xml.WriteStartElement("newCryptPassword");
                xml.WriteString(_SHA1Password);
                xml.WriteEndElement();
            }

            if (_SHA512Password != null)
            {
                xml.WriteStartElement("newSecureCryptPassword");
                xml.WriteString(_SHA512Password);
                xml.WriteEndElement();
            }

            if (m_AccessLevel >= AccessLevel.Counselor)
            {
                xml.WriteStartElement("accessLevel");
                xml.WriteString(m_AccessLevel.ToString());
                xml.WriteEndElement();
            }

            if (Flags != 0)
            {
                xml.WriteStartElement("flags");
                xml.WriteString(XmlConvert.ToString(Flags));
                xml.WriteEndElement();
            }

            xml.WriteStartElement("created");
            xml.WriteString(XmlConvert.ToString(Created, XmlDateTimeSerializationMode.Utc));
            xml.WriteEndElement();

            xml.WriteStartElement("lastLogin");
            xml.WriteString(XmlConvert.ToString(LastLogin, XmlDateTimeSerializationMode.Utc));
            xml.WriteEndElement();

            xml.WriteStartElement("totalGameTime");
            xml.WriteString(XmlConvert.ToString(TotalGameTime));
            xml.WriteEndElement();

            xml.WriteStartElement("chars");

            for (int i = 0; i < m_Mobiles.Length; ++i)
            {
                Mobile m = m_Mobiles[i];

                if (m != null && !m.Deleted)
                {
                    xml.WriteStartElement("char");
                    xml.WriteAttributeString("index", i.ToString());
                    xml.WriteString(m.Serial.Value.ToString());
                    xml.WriteEndElement();
                }
            }

            xml.WriteEndElement();

            if (m_Comments != null && m_Comments.Count > 0)
            {
                xml.WriteStartElement("comments");

                foreach (AccountComment c in m_Comments)
                {
                    c.Save(xml);
                }

                xml.WriteEndElement();
            }

            if (m_Tags != null && m_Tags.Count > 0)
            {
                xml.WriteStartElement("tags");

                foreach (AccountTag t in m_Tags)
                {
                    t.Save(xml);
                }

                xml.WriteEndElement();
            }

            if (LoginIPs.Length > 0)
            {
                xml.WriteStartElement("addressList");

                xml.WriteAttributeString("count", LoginIPs.Length.ToString());

                foreach (IPAddress ip in LoginIPs)
                {
                    xml.WriteStartElement("ip");
                    xml.WriteString(ip.ToString());
                    xml.WriteEndElement();
                }

                xml.WriteEndElement();
            }

            if (IPRestrictions.Length > 0)
            {
                xml.WriteStartElement("accessCheck");

                foreach (string ip in IPRestrictions)
                {
                    xml.WriteStartElement("ip");
                    xml.WriteString(ip);
                    xml.WriteEndElement();
                }

                xml.WriteEndElement();
            }

            xml.WriteStartElement("totalCurrency");
            xml.WriteString(XmlConvert.ToString(TotalCurrency));
            xml.WriteEndElement();

            xml.WriteStartElement("sovereigns");
            xml.WriteString(XmlConvert.ToString(Sovereigns));
            xml.WriteEndElement();

            if (SecureAccounts != null)
            {
                xml.WriteStartElement("SecureAccounts");

                for (int i = 0; i < m_Mobiles.Length; ++i)
                {
                    Mobile m = m_Mobiles[i];
                    int balance = GetSecureAccountAmount(m);

                    if (m != null && !m.Deleted && balance > 0)
                    {
                        xml.WriteStartElement("char");
                        xml.WriteAttributeString("index", i.ToString());
                        xml.WriteString(balance.ToString());
                        xml.WriteEndElement();
                    }
                }

                xml.WriteEndElement();
            }

            xml.WriteEndElement();
        }

        public override string ToString()
        {
            return Username;
        }

        private static void EventSink_Connected(ConnectedEventArgs e)
        {
            Account acc = e.Mobile.Account as Account;

            if (acc == null)
            {
                return;
            }

            if (!acc.Young || acc.m_YoungTimer != null)
            {
                return;
            }

            acc.m_YoungTimer = new YoungTimer(acc);
            acc.m_YoungTimer.Start();
        }

        private static void EventSink_Disconnected(DisconnectedEventArgs e)
        {
            Account acc = e.Mobile.Account as Account;

            if (acc == null)
            {
                return;
            }

            if (acc.m_YoungTimer != null)
            {
                acc.m_YoungTimer.Stop();
                acc.m_YoungTimer = null;
            }

            PlayerMobile m = e.Mobile as PlayerMobile;

            if (m != null)
            {
                acc.m_TotalGameTime += DateTime.UtcNow - m.SessionStart;
            }
        }

        private static void EventSink_Login(LoginEventArgs e)
        {
            PlayerMobile m = e.Mobile as PlayerMobile;

            if (m == null)
            {
                return;
            }

            Account acc = m.Account as Account;

            if (acc == null)
            {
                return;
            }

            if (!m.Young || !acc.Young)
            {
                return;
            }

            TimeSpan ts = YoungDuration - acc.TotalGameTime;
            int hours = Math.Max((int)ts.TotalHours, 0);

            m.SendAsciiMessage(
                "You will enjoy the benefits and relatively safe status of a young player for {0} more hour{1}.",
                hours,
                hours != 1 ? "s" : "");
        }

        private class YoungTimer : Timer
        {
            private readonly Account _Account;

            public YoungTimer(Account account)
                : base(TimeSpan.FromMinutes(1.0), TimeSpan.FromMinutes(1.0))
            {
                _Account = account;

                Priority = TimerPriority.FiveSeconds;
            }

            protected override void OnTick()
            {
                _Account.CheckYoung();
            }
        }

        #region Gold Account
        /// <summary>
        ///     This amount specifies the value at which point Gold turns to Platinum.
        ///     By default, when 1,000,000,000 Gold is accumulated, it will transform
        ///     into 1 Platinum.
        /// </summary>
        public static int CurrencyThreshold
        {
            get { return AccountGold.CurrencyThreshold; }
            set { AccountGold.CurrencyThreshold = value; }
        }

        /// <summary>
        ///     This amount represents the total amount of currency owned by the player.
        ///     It is cumulative of both Gold and Platinum, the absolute total amount of
        ///     Gold owned by the player can be found by multiplying this value by the
        ///     CurrencyThreshold value.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator, true)]
        public double TotalCurrency { get; private set; }

        /// <summary>
        ///     This amount represents the current amount of Gold owned by the player.
        ///     The value does not include the value of Platinum and ranges from
        ///     0 to 999,999,999 by default.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public int TotalGold => (int)Math.Floor((TotalCurrency - Math.Truncate(TotalCurrency)) * Math.Max(1.0, CurrencyThreshold));

        /// <summary>
        ///     This amount represents the current amount of Platinum owned by the player.
        ///     The value does not include the value of Gold and ranges from
        ///     0 to 2,147,483,647 by default.
        ///     One Platinum represents the value of CurrencyThreshold in Gold.
        /// </summary>
        [CommandProperty(AccessLevel.Administrator)]
        public int TotalPlat => (int)Math.Truncate(TotalCurrency);

        /// <summary>
        ///     Attempts to deposit the given amount of Gold and Platinum into this account.
        /// </summary>
        /// <param name="amount">Amount to deposit.</param>
        /// <returns>True if successful, false if amount given is less than or equal to zero.</returns>
        public bool DepositCurrency(double amount)
        {
            if (amount <= 0)
            {
                return false;
            }

            double oldAmount = TotalCurrency;
            TotalCurrency += amount;

            EventSink.InvokeAccountGoldChange(new AccountGoldChangeEventArgs(this, oldAmount, TotalCurrency));

            return true;
        }

        /// <summary>
        ///     Attempts to deposit the given amount of Gold into this account.
        ///     If the given amount is greater than the CurrencyThreshold,
        ///     Platinum will be deposited to offset the difference.
        /// </summary>
        /// <param name="amount">Amount to deposit.</param>
        /// <returns>True if successful, false if amount given is less than or equal to zero.</returns>
        public bool DepositGold(int amount)
        {
            return DepositCurrency(amount / Math.Max(1.0, CurrencyThreshold));
        }

        /// <summary>
        ///     Attempts to deposit the given amount of Gold into this account.
        ///     If the given amount is greater than the CurrencyThreshold,
        ///     Platinum will be deposited to offset the difference.
        /// </summary>
        /// <param name="amount">Amount to deposit.</param>
        /// <returns>True if successful, false if amount given is less than or equal to zero.</returns>
        public bool DepositGold(long amount)
        {
            return DepositCurrency(amount / Math.Max(1.0, CurrencyThreshold));
        }

        /// <summary>
        ///     Attempts to deposit the given amount of Platinum into this account.
        /// </summary>
        /// <param name="amount">Amount to deposit.</param>
        /// <returns>True if successful, false if amount given is less than or equal to zero.</returns>
        public bool DepositPlat(int amount)
        {
            return DepositCurrency(amount);
        }

        /// <summary>
        ///     Attempts to deposit the given amount of Platinum into this account.
        /// </summary>
        /// <param name="amount">Amount to deposit.</param>
        /// <returns>True if successful, false if amount given is less than or equal to zero.</returns>
        public bool DepositPlat(long amount)
        {
            return DepositCurrency(amount);
        }

        /// <summary>
        ///     Attempts to withdraw the given amount of Platinum and Gold from this account.
        /// </summary>
        /// <param name="amount">Amount to withdraw.</param>
        /// <returns>True if successful, false if balance was too low.</returns>
        public bool WithdrawCurrency(double amount)
        {
            if (amount <= 0)
            {
                return true;
            }

            if (amount > TotalCurrency)
            {
                return false;
            }

            double oldAmount = TotalCurrency;
            TotalCurrency -= amount;

            EventSink.InvokeAccountGoldChange(new AccountGoldChangeEventArgs(this, oldAmount, TotalCurrency));
            return true;
        }

        /// <summary>
        ///     Attempts to withdraw the given amount of Gold from this account.
        ///     If the given amount is greater than the CurrencyThreshold,
        ///     Platinum will be withdrawn to offset the difference.
        /// </summary>
        /// <param name="amount">Amount to withdraw.</param>
        /// <returns>True if successful, false if balance was too low.</returns>
        public bool WithdrawGold(int amount)
        {
            return WithdrawCurrency(amount / Math.Max(1.0, CurrencyThreshold));
        }

        /// <summary>
        ///     Attempts to withdraw the given amount of Gold from this account.
        ///     If the given amount is greater than the CurrencyThreshold,
        ///     Platinum will be withdrawn to offset the difference.
        /// </summary>
        /// <param name="amount">Amount to withdraw.</param>
        /// <returns>True if successful, false if balance was too low.</returns>
        public bool WithdrawGold(long amount)
        {
            return WithdrawCurrency(amount / Math.Max(1.0, CurrencyThreshold));
        }

        /// <summary>
        ///     Attempts to withdraw the given amount of Platinum from this account.
        /// </summary>
        /// <param name="amount">Amount to withdraw.</param>
        /// <returns>True if successful, false if balance was too low.</returns>
        public bool WithdrawPlat(int amount)
        {
            return WithdrawCurrency(amount);
        }

        /// <summary>
        ///     Attempts to withdraw the given amount of Platinum from this account.
        /// </summary>
        /// <param name="amount">Amount to withdraw.</param>
        /// <returns>True if successful, false if balance was too low.</returns>
        public bool WithdrawPlat(long amount)
        {
            return WithdrawCurrency(amount);
        }

        /// <summary>
        ///     Gets the total balance of Gold for this account.
        /// </summary>
        /// <param name="gold">Gold value, Platinum exclusive</param>
        /// <param name="totalGold">Gold value, Platinum inclusive</param>
        public void GetGoldBalance(out int gold, out double totalGold)
        {
            gold = TotalGold;
            totalGold = TotalCurrency * Math.Max(1.0, CurrencyThreshold);
        }

        /// <summary>
        ///     Gets the total balance of Gold for this account.
        /// </summary>
        /// <param name="gold">Gold value, Platinum exclusive</param>
        /// <param name="totalGold">Gold value, Platinum inclusive</param>
        public void GetGoldBalance(out long gold, out double totalGold)
        {
            gold = TotalGold;
            totalGold = TotalCurrency * Math.Max(1.0, CurrencyThreshold);
        }

        /// <summary>
        ///     Gets the total balance of Platinum for this account.
        /// </summary>
        /// <param name="plat">Platinum value, Gold exclusive</param>
        /// <param name="totalPlat">Platinum value, Gold inclusive</param>
        public void GetPlatBalance(out int plat, out double totalPlat)
        {
            plat = TotalPlat;
            totalPlat = TotalCurrency;
        }

        /// <summary>
        ///     Gets the total balance of Platinum for this account.
        /// </summary>
        /// <param name="plat">Platinum value, Gold exclusive</param>
        /// <param name="totalPlat">Platinum value, Gold inclusive</param>
        public void GetPlatBalance(out long plat, out double totalPlat)
        {
            plat = TotalPlat;
            totalPlat = TotalCurrency;
        }

        /// <summary>
        ///     Gets the total balance of Gold and Platinum for this account.
        /// </summary>
        /// <param name="gold">Gold value, Platinum exclusive</param>
        /// <param name="totalGold">Gold value, Platinum inclusive</param>
        /// <param name="plat">Platinum value, Gold exclusive</param>
        /// <param name="totalPlat">Platinum value, Gold inclusive</param>
        public void GetBalance(out int gold, out double totalGold, out int plat, out double totalPlat)
        {
            GetGoldBalance(out gold, out totalGold);
            GetPlatBalance(out plat, out totalPlat);
        }

        /// <summary>
        ///     Gets the total balance of Gold and Platinum for this account.
        /// </summary>
        /// <param name="gold">Gold value, Platinum exclusive</param>
        /// <param name="totalGold">Gold value, Platinum inclusive</param>
        /// <param name="plat">Platinum value, Gold exclusive</param>
        /// <param name="totalPlat">Platinum value, Gold inclusive</param>
        public void GetBalance(out long gold, out double totalGold, out long plat, out double totalPlat)
        {
            GetGoldBalance(out gold, out totalGold);
            GetPlatBalance(out plat, out totalPlat);
        }

        public bool HasGoldBalance(double amount)
        {
            long gold;
            double totalGold;

            GetGoldBalance(out gold, out totalGold);

            return amount <= totalGold;
        }

        public bool HasPlatBalance(double amount)
        {
            long plat;
            double totalPlat;

            GetPlatBalance(out plat, out totalPlat);

            return amount <= totalPlat;
        }
        #endregion

        #region Secure Account
        public Dictionary<Mobile, int> SecureAccounts;

        public static readonly int MaxSecureAmount = 100000000;

        public int GetSecureAccountAmount(Mobile m)
        {
            for (int i = 0; i < Length; i++)
            {
                Mobile mob = m_Mobiles[i];

                if (mob == null)
                    continue;

                if (mob == m)
                {
                    if (SecureAccounts != null && SecureAccounts.ContainsKey(m))
                        return SecureAccounts[m];
                }
            }

            return 0;
        }

        public bool DepositToSecure(Mobile m, int amount)
        {
            for (int i = 0; i < Length; i++)
            {
                Mobile mob = m_Mobiles[i];

                if (mob == null)
                    continue;

                if (mob == m)
                {
                    if (SecureAccounts == null)
                        SecureAccounts = new Dictionary<Mobile, int>();

                    if (!SecureAccounts.ContainsKey(m))
                        SecureAccounts[m] = Math.Min(MaxSecureAmount, amount);
                    else
                        SecureAccounts[m] = Math.Min(MaxSecureAmount, SecureAccounts[m] + amount);

                    return true;
                }
            }

            return false;
        }

        public bool WithdrawFromSecure(Mobile m, int amount)
        {
            for (int i = 0; i < Length; i++)
            {
                Mobile mob = m_Mobiles[i];

                if (mob == null)
                    continue;

                if (m == mob)
                {
                    if (SecureAccounts == null || !SecureAccounts.ContainsKey(m) || SecureAccounts[m] < amount)
                        return false;

                    SecureAccounts[m] -= amount;

                    return true;
                }
            }

            return false;
        }
        #endregion

        #region Sovereigns
        /// <summary>
        ///     Sovereigns which can be used at the shard owners disposal. On EA, they are used for curerncy with the Ultima Store
        /// </summary>
        [CommandProperty(AccessLevel.Administrator, true)]
        public int Sovereigns { get; private set; }

        public void SetSovereigns(int amount)
        {
            Sovereigns = amount;
        }

        public bool DepositSovereigns(int amount)
        {
            if (amount <= 0)
            {
                return false;
            }

            Sovereigns += amount;
            return true;
        }

        public bool WithdrawSovereigns(int amount)
        {
            if (amount <= 0)
            {
                return true;
            }

            if (amount > Sovereigns)
            {
                return false;
            }

            Sovereigns -= amount;
            return true;
        }
        #endregion
    }
}