// Copyright (C) Stichting Deltares 2021. All rights reserved.
//
// This file is part of the application DAM - UI.
//
// DAM - UI is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Xml.Serialization;
using Deltares.Dam.Data;
using Deltares.Standard;
using Deltares.Standard.Attributes;
using Deltares.Standard.EventPublisher;

namespace Deltares.Dam.Forms
{
    [Impact(Impact.None)]
    public class LocationJobSymbol : Symbol, IVisibleEnabled
    {
        private readonly Func<double, bool> bad = (f) => f <= 1.0 && f > 0;
        private readonly Func<double, bool> warning = (f) => f > 1.0 && f <= 1.05;
        private readonly Func<double, bool> good = (f) => f > 1.05 && f < 1.17;
        private readonly Func<double, bool> excellent = (f) => f >= 1.17 && f < DamGlobalConstants.NoRunValue;
        private readonly Func<double, bool> failed = (f) => double.IsNaN(f) || f <= 0;
        private readonly Func<double, bool> notCalculated = (f) => f >= DamGlobalConstants.NoRunValue;

        private int currentView = 0;
        private DateTime currentDateTime = DateTime.Today;
        private DateTime minDateTime = DateTime.Today;
        private DateTime maxDateTime = DateTime.Today;

        private string currentProfileName;
        private string currentScenarioName;
        private string currentCalculation;

        private DamProjectData damProjectData = null;
        private LocationJob currentLocationJob = null;

        public LocationJobSymbol()
        {
            RegisterColorAndLabel("f >= 1.17", Color.Lime, this.excellent);
            RegisterColorAndLabel("1.05 < f < 1.17", Color.Yellow, this.good);
            RegisterColorAndLabel("1.0 < f <= 1.05", Color.Orange, this.warning);
            RegisterColorAndLabel("f <= 1.0", Color.Red, this.bad);
            RegisterColorAndLabel("failed calculation", Color.White, this.failed);
            RegisterColorAndLabel("not yet calculated", Color.Gray, this.notCalculated);

            DataEventPublisher.OnAfterChange += DataEventPublisher_OnAfterChange;
        }

        private void DataEventPublisher_OnAfterChange(object sender, PublishEventArgs e)
        {
            if (sender == this.damProjectData)
            {
                DataEventPublisher.AfterChange(this);
            }
        }

        public LocationJob CurrentLocationJob
        {
            get { return currentLocationJob; }
        }

        public Image GetSymbol(object data, bool selected)
        {
            var locationJob = data as LocationJob;
            currentLocationJob = locationJob;
            if (locationJob != null)
            {
                var damProjectType = this.damProjectData.DamProjectType;

                if (damProjectType == DamProjectType.Calamity)
                {
                    if (!locationJob.HasLocationResults)
                        return GetImage(GetColor(DamGlobalConstants.NoRunValue), selected);

                    DateTime dateTime = this.CurrentDateTime;
                    TimeSerie timeSerie = locationJob.LocationResult.StabilityTimeSerie;
                    double value = timeSerie.GetValue(dateTime);
                    return GetImage(GetColor(value), selected);
                }                               
            }

            return GetImage(Color.Black, selected);
        }

        [XmlIgnore]
        public string CurrentProfileName
        {
            get { return this.currentProfileName; }
            set
            {
                DataEventPublisher.BeforeChange(this, "CurrentProfileName");
                this.currentProfileName = value;
                LocationJob.CurrentProfileName = value;
                DataEventPublisher.DataListModified(this.DamProjectData.LocationJobs);
                DataEventPublisher.AfterChange(this, "CurrentProfileName");
            }
        }

        [XmlIgnore]
        public string CurrentScenarioName
        {
            get { return this.currentScenarioName; }
            set
            {
                DataEventPublisher.BeforeChange(this, "CurrentScenarioName");
                this.currentScenarioName = value;
                LocationJob.CurrentScenarioName = value;
                DataEventPublisher.DataListModified(this.DamProjectData.LocationJobs);
                DataEventPublisher.AfterChange(this, "CurrentScenarioName");
            }
        }

        [XmlIgnore]
        public string CurrentCalculation
        {
            get { return this.currentCalculation; }
            set
            {
                DataEventPublisher.BeforeChange(this, "CurrentCalculation");
                this.currentCalculation = value;
                LocationJob.CurrentCalculation = value;
                DataEventPublisher.DataListModified(this.DamProjectData.LocationJobs);
                DataEventPublisher.AfterChange(this, "CurrentCalculation");
            }
        }

        [XmlIgnore]
        public DateTime CurrentDateTime
        {
            get { return currentDateTime; }
            set
            {
                DataEventPublisher.BeforeChange(this, "CurrentDateTime");
                this.currentDateTime = value;
                this.UpdateView();
                LocationJob.CurrentTime = value;
                DataEventPublisher.DataListModified(this.DamProjectData.LocationJobs);
                DataEventPublisher.AfterChange(this, "CurrentDateTime");
            }
        }

        [XmlIgnore]
        public int CurrentView
        {
            get { return currentView; }
            set
            {
                DataEventPublisher.BeforeChange(this, "CurrentView");
                currentView = value;
                this.UpdateCurrentDateTime();
                DataEventPublisher.AfterChange(this, "CurrentView");
            }
        }

        public DamProjectData DamProjectData
        {
            get { return damProjectData; }
            set
            {
                damProjectData = value;
                DataEventPublisher.AfterChange(this, "DamProjectData");
            }
        }

        private void UpdateCurrentDateTime()
        {
            TimeSpan span = maxDateTime - minDateTime;
            if (span.TotalSeconds >= 0)
            {
                CurrentDateTime = minDateTime.AddSeconds(this.currentView * span.TotalSeconds / 100);
            }
        }

        private void UpdateView()
        {
            TimeSpan span = maxDateTime - minDateTime;
            TimeSpan spanUntilView = currentDateTime - minDateTime;

            if (span.TotalSeconds == 0)
            {
                this.currentView = 0;
            }
            else
            {
                this.currentView = Convert.ToInt32(100 * spanUntilView.TotalSeconds / span.TotalSeconds);

                this.currentView = Math.Max(0, this.currentView);
                this.currentView = Math.Min(100, this.currentView);
            }
        }

        public void Update(IEnumerable<LocationJob> locationJobs)
        {
            this.minDateTime = DateTime.MaxValue;
            this.maxDateTime = DateTime.MinValue;
            //Todo Why is this timeserie part of ..Symbol and not part of LocationJob itself
            foreach (LocationJob locationJob in locationJobs)
            {
                if (locationJob.LocationResult != null)
                {
                    foreach (TimeSerieEntry entry in locationJob.LocationResult.StabilityTimeSerie.Entries)
                    {
                        if (entry.DateTime < minDateTime)
                        {
                            minDateTime = entry.DateTime;
                        }

                        if (entry.DateTime > maxDateTime)
                        {
                            maxDateTime = entry.DateTime;
                        }
                    }
                    if (locationJob.LocationResult.StabilityTimeSerie.Entries.Count == 0 && locationJob.WaterLevelTimeSerie != null)
                    {
                        foreach (TimeSerieEntry entry in locationJob.WaterLevelTimeSerie.Entries)
                        {
                            if (entry.DateTime < minDateTime)
                            {
                                minDateTime = entry.DateTime;
                            }

                            if (entry.DateTime > maxDateTime)
                            {
                                maxDateTime = entry.DateTime;
                            }
                        }
                    }
                }
            }

            this.UpdateCurrentDateTime();
        }

        #region IVisibleEnabled Members

        public bool IsVisible(string property)
        {
            if (this.damProjectData != null)
            {
                switch (property)
                {
                    case "CurrentView": 
                    case "CurrentDateTime":
                        return this.DamProjectData.DamProjectType == DamProjectType.Calamity;                        
                    case "CurrentProfileName": return false;
                    case "CurrentScenarioName": return false;
                    case "CurrentCalculation": return false; 
                       
                    default: 
                        return true;
                }
            }

            return true;
        }

        public bool IsEnabled(string property)
        {
            if (this.damProjectData != null)
            {
                switch (property)
                {
                    case "CurrentView":
                    case "CurrentDateTime":
                        return this.DamProjectData != null && this.DamProjectData.DamProjectType == DamProjectType.Calamity &&
                            this.DamProjectData.LocationJobs != null && this.DamProjectData.LocationJobs.Count > 0;                        
                    case "CurrentProfileName": return false;
                    case "CurrentScenarioName": return false;
                    case "CurrentCalculation": return false; 
                    default:
                        return true;
                }
            }
            return true;
        }

        #endregion
    }
}