// Copyright (C) Stichting Deltares 2016. All rights reserved.
//
// This file is part of Ringtoets.
//
// Ringtoets 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.Collections.Generic;
using System.Windows.Forms;
using Core.Common.Base;
using Core.Components.Gis.Data;
using Core.Components.Gis.Forms;
using Ringtoets.Common.Data.AssessmentSection;
using Ringtoets.Common.Data.FailureMechanism;
using Ringtoets.Common.Data.Hydraulics;
using Ringtoets.Common.Forms.PresentationObjects;

namespace Ringtoets.Common.Forms.Views
{
    /// <summary>
    /// This class is a view showing map data for a failure mechanism.
    /// </summary>
    public partial class FailureMechanismView<T> : UserControl, IMapView where T : IFailureMechanism
    {
        private const string defaultMapDataCollectionName = "-";

        private readonly Observer failureMechanismObserver;
        private readonly Observer assessmentSectionObserver;
        private readonly Observer hydraulicBoundaryDatabaseObserver;

        private readonly MapDataCollection mapDataCollection;
        private readonly MapLineData referenceLineMapData;
        private readonly MapLineData sectionsMapData;
        private readonly MapPointData sectionsStartPointMapData;
        private readonly MapPointData sectionsEndPointMapData;
        private readonly MapPointData hydraulicBoundaryLocationsMapData;

        private FailureMechanismContext<T> data;

        /// <summary>
        /// Creates a new instance of <see cref="FailureMechanismView{T}"/>.
        /// </summary>
        public FailureMechanismView()
        {
            InitializeComponent();

            failureMechanismObserver = new Observer(UpdateMapData);
            assessmentSectionObserver = new Observer(() =>
            {
                if (!ReferenceEquals(hydraulicBoundaryDatabaseObserver.Observable, data.Parent.HydraulicBoundaryDatabase))
                {
                    hydraulicBoundaryDatabaseObserver.Observable = data.Parent.HydraulicBoundaryDatabase;
                }

                UpdateMapData();
            });
            hydraulicBoundaryDatabaseObserver = new Observer(UpdateMapData);

            mapDataCollection = new MapDataCollection(defaultMapDataCollectionName);
            referenceLineMapData = RingtoetsMapDataFactory.CreateReferenceLineMapData();
            hydraulicBoundaryLocationsMapData = RingtoetsMapDataFactory.CreateHydraulicBoundaryLocationsMapData();
            sectionsMapData = RingtoetsMapDataFactory.CreateFailureMechanismSectionsMapData();
            sectionsStartPointMapData = RingtoetsMapDataFactory.CreateFailureMechanismSectionsStartPointMapData();
            sectionsEndPointMapData = RingtoetsMapDataFactory.CreateFailureMechanismSectionsEndPointMapData();

            mapDataCollection.Add(referenceLineMapData);
            mapDataCollection.Add(sectionsMapData);
            mapDataCollection.Add(sectionsStartPointMapData);
            mapDataCollection.Add(sectionsEndPointMapData);
            mapDataCollection.Add(hydraulicBoundaryLocationsMapData);
        }

        public object Data
        {
            get
            {
                return data;
            }
            set
            {
                data = value as FailureMechanismContext<T>;

                if (data == null)
                {
                    failureMechanismObserver.Observable = null;
                    assessmentSectionObserver.Observable = null;
                    hydraulicBoundaryDatabaseObserver.Observable = null;

                    mapDataCollection.Name = defaultMapDataCollectionName;

                    Map.Data = null;
                    Map.BackgroundMapData = null;
                }
                else
                {
                    failureMechanismObserver.Observable = data.WrappedData;
                    assessmentSectionObserver.Observable = data.Parent;

                    mapDataCollection.Name = data.WrappedData.Name;
                    hydraulicBoundaryDatabaseObserver.Observable = data.Parent.HydraulicBoundaryDatabase;

                    SetMapDataFeatures();

                    Map.Data = mapDataCollection;
                    Map.BackgroundMapData = data.Parent.BackgroundMapData;
                }
            }
        }

        public IMapControl Map
        {
            get
            {
                return mapControl;
            }
        }

        protected override void Dispose(bool disposing)
        {
            failureMechanismObserver.Dispose();
            assessmentSectionObserver.Dispose();
            hydraulicBoundaryDatabaseObserver.Dispose();

            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        private void UpdateMapData()
        {
            SetMapDataFeatures();

            referenceLineMapData.NotifyObservers();
            sectionsMapData.NotifyObservers();
            sectionsStartPointMapData.NotifyObservers();
            sectionsEndPointMapData.NotifyObservers();
            hydraulicBoundaryLocationsMapData.NotifyObservers();
        }

        private void SetMapDataFeatures()
        {
            ReferenceLine referenceLine = data.Parent.ReferenceLine;
            HydraulicBoundaryDatabase hydraulicBoundaryDatabase = data.Parent.HydraulicBoundaryDatabase;
            IEnumerable<FailureMechanismSection> failureMechanismSections = data.WrappedData.Sections;

            referenceLineMapData.Features = RingtoetsMapDataFeaturesFactory.CreateReferenceLineFeatures(referenceLine, data.Parent.Id, data.Parent.Name);
            sectionsMapData.Features = RingtoetsMapDataFeaturesFactory.CreateFailureMechanismSectionFeatures(failureMechanismSections);
            sectionsStartPointMapData.Features = RingtoetsMapDataFeaturesFactory.CreateFailureMechanismSectionStartPointFeatures(failureMechanismSections);
            sectionsEndPointMapData.Features = RingtoetsMapDataFeaturesFactory.CreateFailureMechanismSectionEndPointFeatures(failureMechanismSections);
            hydraulicBoundaryLocationsMapData.Features = RingtoetsMapDataFeaturesFactory.CreateHydraulicBoundaryDatabaseFeatures(hydraulicBoundaryDatabase);
        }
    }
}