// Copyright (c) 2023 schick Informatik
// Description: Container model for shipcall related info
//

using BreCalClient.misc.Api;
using BreCalClient.misc.Model;
using System;
using System.Collections.Generic;

namespace BreCalClient
{

    /// <summary>
    /// Container model to aggregate separate models for the Shipcall control data binding
    /// </summary>
    public class ShipcallControlModel
    {

        #region Enumerations

        public enum TrafficLightMode
        {
            OFF,
            GREEN,
            YELLOW,
            RED,
            RED_YELLOW,
            ALL
        };

        [Flags]
        public enum StatusFlags
        {
            RED,
            GREEN,
            YELLOW,
            BLINK_1,
            BLINK_2
        };

        #endregion

        #region Properties

        public Shipcall? Shipcall { get; set; }

        public Ship? Ship { get; set; }

        public string? Berth { get; set; }

        internal Dictionary<ParticipantType, ParticipantAssignment> AssignedParticipants { get; } = new();

        public List<Times> Times { get; set; } = new();

        public DateTime? Eta
        {
            get
            {
                Times? agencyTimes = this.GetTimesForParticipantType(ParticipantType.AGENCY);
                if((agencyTimes != null) && (agencyTimes.EtaBerth != null))
                    return agencyTimes.EtaBerth;
                return Shipcall?.Eta;
            }
        }

        public DateTime? Etd
        {
            get
            {
                Times? agencyTimes = this.GetTimesForParticipantType(Extensions.ParticipantType.AGENCY);
                if ((agencyTimes != null) && (agencyTimes.EtdBerth != null))
                    return agencyTimes.EtdBerth;
                return Shipcall?.Etd;
            }
        }

        public TrafficLightMode LightMode
        {
            get
            {
                TrafficLightMode tlm = TrafficLightMode.OFF;

                if (this.Shipcall != null)
                {
                    if(this.Shipcall.Evaluation.HasValue)
                    {
                        tlm = (TrafficLightMode)this.Shipcall.Evaluation;
                    }
                }
                return tlm;
            }
        }

        public string Title
        {
            get
            {
                if (this.Shipcall == null) return "";
                Extensions.TypeEnum callType = (Extensions.TypeEnum) this.Shipcall.Type;
                return string.Format("{0} {1}", callType, this.Ship?.Name);
            }
        }

        #endregion

        #region public methods

        public void AssignParticipants()
        {
            this.AssignedParticipants.Clear();
            if (Shipcall != null)
            {
                foreach (ParticipantAssignment participantAssignment in Shipcall.Participants)
                {
                    AssignedParticipants[(ParticipantType)participantAssignment.Type] = participantAssignment;
                }
            }
        }

        internal Times? GetTimesForParticipantType(ParticipantType type)
        {

            if (AssignedParticipants.ContainsKey(type)) {
                int participantId = AssignedParticipants[type].ParticipantId;
                foreach (Times times in this.Times)
                {
                    if ((times.ParticipantId == participantId) && (times.ParticipantType == (int) type))
                        return times;
                }
                if(type == ParticipantType.AGENCY)
                {
                    // if I am BSMD and no agency entry was found this means we are editing the agency entry
                    if(App.Participant.Type == (int) ParticipantType.BSMD)
                    {
                        foreach(Times times in this.Times)
                        {
                            if ((times.ParticipantId == App.Participant.Id) && (times.ParticipantType == (int) ParticipantType.AGENCY))
                                return times;
                        }
                    }
                }
            }
            return null;
        }

        public bool ContainsRemarkText(string text)
        {
            if(Shipcall != null)
            {
                foreach(Times times in this.Times)
                {
                    if (times.Remarks == null) continue;
                    if(times.Remarks.Contains(text)) return true;
                }

            }
            return false;
        }

        public string? GetBerthText(Times times)
        {
            string? berthText = null;
            if ((BreCalLists.Berths != null) && times.BerthId.HasValue && (this.Shipcall?.Type != ShipcallType.Shifting))
            {
                Berth? berth = BreCalLists.AllBerths.Find((x) => x.Id == times.BerthId);
                berthText = berth?.Name;
            }

            if ((berthText == null) && (times.ParticipantType != ParticipantType.TERMINAL))
            {
                if (this.Shipcall?.Type == ShipcallType.Arrival)
                {
                    Berth? berth = BreCalLists.AllBerths?.Find((x) => x.Id == this.Shipcall?.ArrivalBerthId);
                    berthText = berth?.Name;
                }
                else
                {
                    Berth? berth = BreCalLists.AllBerths?.Find((x) => x.Id == this.Shipcall?.DepartureBerthId);
                    berthText = berth?.Name;
                }
            }

            return berthText;
        }


        /// <summary>
        /// After closing the edit shipcall or edit agency dialogs, the times assignments may have changed.
        /// This function updates the assignments for existing times records accordingly and saves them.
        /// </summary>
        /// <param name="_api">API reference to PUT eidted times</param>
        internal async void UpdateTimesAssignments(DefaultApi _api)
        {
            foreach (ParticipantType participantType in this.AssignedParticipants.Keys)
            {
                Times? times = this.GetTimesForParticipantType(participantType);
                if(times == null) continue;
                if(times.ParticipantId != this.AssignedParticipants[participantType].ParticipantId)
                {
                    times.ParticipantId = this.AssignedParticipants[participantType].ParticipantId;
                    await _api.TimesPutAsync(times);
                }
            }

            // if somebody just removed an assignment it is gone fom AssignedParticipants, but there is still a
            // times record left which must be removed

            List<Times> deleteTimes = new();
            foreach (Times times in this.Times)
            {
                bool foundTimes = false;
                foreach (ParticipantAssignment pa in this.AssignedParticipants.Values)
                {
                    if((pa.ParticipantId == times.ParticipantId) && (pa.Type == times.ParticipantType))
                    {
                        foundTimes = true;
                        break;
                    }
                }
                if (!foundTimes)
                {
                    deleteTimes.Add(times);
                }
            }

            foreach(Times times in deleteTimes)
            {
                _api.TimesDelete(times.Id);
                this.Times.Remove(times);
            }
        }

        #endregion

        #region helper

        internal Participant? GetParticipantForType(Extensions.ParticipantType participantType)
        {
            if(AssignedParticipants.ContainsKey(participantType) && BreCalLists.ParticipantLookupDict.ContainsKey(AssignedParticipants[participantType].ParticipantId))
                return BreCalLists.ParticipantLookupDict[AssignedParticipants[participantType].ParticipantId];

            return null;
        }

        private bool IsFlagSet(StatusFlags flag)
        {
            if(this.Shipcall == null) return false;
            return (this.Shipcall.Flags & (int) flag) != 0;
        }

        #endregion

    }
}