// Copyright (c) 2023 schick Informatik
// Description: some helpers
//

using BreCalClient.misc.Model;
using System;
using System.ComponentModel;

namespace BreCalClient
{
    public static class Extensions
    {

        #region Enum

        /// <summary>
        /// Copied from models clunky I know
        /// </summary>
        [Flags]
        public enum ParticipantType
        {
            [Description("not assigned")]
            NONE = 0,
            [Description("BSMD")]
            BSMD = 1,
            [Description("Terminal")]
            TERMINAL = 2,
            [Description("Flusslotsen")]
            PILOT = 4,
            [Description("Agentur")]
            AGENCY = 8,
            [Description("Festmacher")]
            MOORING = 16,
            [Description("Hafenamt")]
            PORT_ADMINISTRATION = 32,
            [Description("Schlepper")]
            TUG = 64,
        }

        /// <summary>
        /// Custom participant flags
        /// </summary>
        [Flags]
        public enum ParticipantFlag
        {
            [Description("allow BSMD initial info")]
            ALLOW_BSMD = 1,
        }

        public enum SortOrder
        {
            SHIP_NAME,
            ETA_ETD,
            MODIFIED
        }

        #endregion

        #region public helper

        public static bool IsTooFar(this DateTime datetime)
        {
            return datetime > DateTime.Now.AddYears(1);
        }

        public static bool IsTooFar(this DateTime? datetime)
        {
            if (datetime == null) return false;
            return datetime > DateTime.Now.AddYears(1);
        }

        public static bool IsTooOld(this DateTime? datetime)
        {
            if (datetime == null) return false;
            {
                return datetime < DateTime.Now.AddDays(-1);
            }
        }

        public static bool IsTypeFlagSet(this Participant participant, ParticipantType flag)
        {
            return (participant.Type & (uint)flag) != 0;
        }

        public static bool IsFlagSet(this Participant participant, ParticipantFlag flag)
        {
            return (participant.Flags & (uint)flag) != 0;
        }

        public static string Truncate(this string value, int maxLength)
        {
            if (string.IsNullOrEmpty(value)) return value;
            return value.Length <= maxLength ? value : value[..maxLength];
        }

        public static string TruncateDots(this string value, int maxLength)
        {
            if(string.IsNullOrEmpty(value)) return value;
            if (value.Length <= maxLength) return value;
            if (value.Length > (maxLength + 1))
            {
                int i = maxLength - 2;
                for (; (i > 0) && !(char.IsWhiteSpace(value[i])); i--) ; // try to put the "..." at a word break
                return value.Substring(0, i) + " ...";
            }
            return value[..maxLength];
        }

        public static string DisplayTime(this Times times, bool isArrival)
        {
            if (isArrival)
            {
                if(times.ParticipantType == (int) ParticipantType.TERMINAL)
                {
                    if(times.OperationsStart.HasValue)
                    {
                        string result = times.OperationsStart.Value.ToString("dd.MM.yyyy HH:mm");
                        if (times.EtaIntervalEnd.HasValue) result = times.OperationsStart.Value.ToString("d.M. HH:mm") + " - " + times.EtaIntervalEnd.Value.ToString("d.M. HH:mm");
                        return result;
                    }
                    else
                    {
                        return "- / -";
                    }
                }
                else
                {
                    if(times.EtaBerth.HasValue)
                    {
                        string result = times.EtaBerth.Value.ToString("dd.MM.yyyy HH:mm");
                        if (times.EtaIntervalEnd.HasValue) result = times.EtaBerth.Value.ToString("d.M. HH:mm") + " - " + times.EtaIntervalEnd.Value.ToString("d.M. HH:mm");
                        return result;
                    }
                    else
                    {
                        return "- / -";
                    }
                }
            }
            else
            {
                if (times.ParticipantType == (int)ParticipantType.TERMINAL)
                {
                    if(times.OperationsEnd.HasValue)
                    {
                        string result = times.OperationsEnd.Value.ToString("dd.MM.yyyy HH:mm");
                        if (times.EtdIntervalEnd.HasValue) result = times.OperationsEnd.Value.ToString("d.M. HH:mm") + " - " + times.EtdIntervalEnd.Value.ToString("d.M. HH:mm");
                        return result;
                    }
                    else
                    {
                        return "- / -";
                    }
                }
                else
                {
                    if(times.EtdBerth.HasValue)
                    {
                        string result = times.EtdBerth.Value.ToString("dd.MM.yyyy HH:mm");
                        if (times.EtdIntervalEnd.HasValue) result = times.EtdBerth.Value.ToString("d.M. HH:mm") + " - " + times.EtdIntervalEnd.Value.ToString("d.M. HH:mm");
                        return result;
                    }
                    else
                    {
                        return "- / -";
                    }
                }
            }
        }

        #endregion

    }
}