// Copyright (C) Stichting Deltares 2017. 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.Linq;
using System.Windows.Forms;
using Core.Common.Base;
using Core.Common.Controls.Views;
using Ringtoets.Common.Data.Calculation;
using Ringtoets.Common.Data.IllustrationPoints;

namespace Ringtoets.Common.Forms.Views
{
    /// <summary>
    /// This class is a view for presenting <see cref="TopLevelFaultTreeIllustrationPoint"/> objects
    /// (as part of a <see cref="GeneralResult{T}"/>).
    /// </summary>
    public partial class GeneralResultFaultTreeIllustrationPointView : UserControl, IView
    {
        private readonly Observer calculationObserver;
        private GeneralResult<TopLevelFaultTreeIllustrationPoint> data;

        /// <summary>
        /// Creates a new instance of <see cref="GeneralResultFaultTreeIllustrationPointView"/>.
        /// </summary>
        /// <param name="calculation">The calculation that owns the data of the view.</param>
        public GeneralResultFaultTreeIllustrationPointView(ICalculation calculation)
        {
            InitializeComponent();

            calculationObserver = new Observer(UpdateIllustrationPointsControl)
            {
                Observable = calculation
            };
        }

        public object Data
        {
            get
            {
                return data;
            }
            set
            {
                data = value as GeneralResult<TopLevelFaultTreeIllustrationPoint>;

                UpdateIllustrationPointsControl();
            }
        }

        protected override void Dispose(bool disposing)
        {
            calculationObserver.Dispose();

            if (disposing)
            {
                components?.Dispose();
            }

            base.Dispose(disposing);
        }

        private void UpdateIllustrationPointsControl()
        {
            illustrationPointsControl.Data = GetIllustrationPointControlItems();
        }

        private IEnumerable<IllustrationPointControlItem> GetIllustrationPointControlItems()
        {
            return data?.TopLevelIllustrationPoints.Select(topLevelFaultTreeIllustrationPoint =>
            {
                IllustrationPointBase illustrationPoint = topLevelFaultTreeIllustrationPoint.FaultTreeNodeRoot.Data;

                return new IllustrationPointControlItem(topLevelFaultTreeIllustrationPoint,
                                                        topLevelFaultTreeIllustrationPoint.WindDirection.Name,
                                                        topLevelFaultTreeIllustrationPoint.ClosingSituation,
                                                        GetStochasts(illustrationPoint),
                                                        illustrationPoint.Beta);
            });
        }

        private static IEnumerable<Stochast> GetStochasts(IllustrationPointBase illustrationPoint)
        {
            var faultTreeIllustrationPoint = illustrationPoint as FaultTreeIllustrationPoint;
            if (faultTreeIllustrationPoint != null)
            {
                return faultTreeIllustrationPoint.Stochasts;
            }

            var subMechanismIllustrationPoint = illustrationPoint as SubMechanismIllustrationPoint;
            if (subMechanismIllustrationPoint != null)
            {
                return subMechanismIllustrationPoint.Stochasts;
            }

            return null;
        }
    }
}