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

namespace Safedispatch_4_0
{
    public enum SortDirection
    {
        Ascending,
        Descending
    }

    public class VehicleComparer : IComparer
    {
        private SortDirection m_direction = SortDirection.Ascending;

        public VehicleComparer() : base() { }

        public VehicleComparer(SortDirection direction)
        {
            this.m_direction = direction;
        }

        int IComparer.Compare(object x, object y)
        {
            SMposition positionX = (SMposition)x;
            SMposition positionY = (SMposition)y;

            if (positionX == null && positionY == null)
            {
                return 0;
            }
            else if (positionX == null && positionY != null)
            {
                return (this.m_direction == SortDirection.Ascending) ? -1 : 1;
            }
            else if (positionX != null && positionY == null)
            {
                return (this.m_direction == SortDirection.Ascending) ? 1 : -1;
            }
            else
            {
                return (this.m_direction == SortDirection.Ascending) ?
                positionX.m_time.CompareTo(positionY.m_time) :
                positionY.m_time.CompareTo(positionX.m_time);
            }
        }
    }


    public class VehicleNameComparer : IComparer
    {

        private SortDirection m_direction = SortDirection.Ascending;

        public VehicleNameComparer() : base() { }

        public VehicleNameComparer(SortDirection direction)
        {
            this.m_direction = direction;
        }

        int IComparer.Compare(object x, object y)
        {

            String positionX = (String)x;
            String positionY = (String)y;

            if (positionX == null && positionY == null)
            {
                return 0;
            }
            else if (positionX == null && positionY != null)
            {
                return (this.m_direction == SortDirection.Ascending) ? -1 : 1;
            }
            else if (positionX != null && positionY == null)
            {
                return (this.m_direction == SortDirection.Ascending) ? 1 : -1;
            }
            else
            {
                return (this.m_direction == SortDirection.Ascending) ? positionX.CompareTo(positionY) : positionY.CompareTo(positionX);
            }
        }
    }

    public class PlaceComparer : IComparer
    {
        public PlaceComparer() : base() { }

        int IComparer.Compare(object x, object y)
        {

            Place X = x as Place;
            Place Y = y as Place;
            return String.Compare(X.type, Y.type);
        }
    }

    public class DefineSMSComparer : IComparer
    {
        public DefineSMSComparer() : base() { }

        int IComparer.Compare(object x, object y)
        {

            Zone_type X = x as Zone_type;
            Zone_type Y = y as Zone_type;
            return String.Compare(X.name,Y.name);         
        }
    }

    public class ZoneClassComparer : IComparer
    {
        public ZoneClassComparer() : base() { }

        int IComparer.Compare(object x, object y)
        {

            ZoneClass X = x as ZoneClass;
            ZoneClass Y = y as ZoneClass;
            return String.Compare(X.name, Y.name);
        }
    }

    public class VehandIDComparer : IComparer
    {
        public VehandIDComparer() : base() { }

        int IComparer.Compare(object x, object y)
        {
            VehandID X = x as VehandID;
            VehandID Y = y as VehandID;
            return String.Compare(X.Name, Y.Name);
        }
    }

    public class UserComparer : IComparer
    {
        public UserComparer() : base() { }

        int IComparer.Compare(object x, object y)
        {
            User X = x as User;
            User Y = y as User;
            return String.Compare(X.UserName, Y.UserName);
        }
    }
}