// 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.Linq;
using Core.Common.Base.Geometry;
using Core.Common.Geometry;
using Core.Components.Gis.Data;
using Core.Components.Gis.Features;
using Core.Components.Gis.Geometries;
using Ringtoets.Common.Data.AssessmentSection;
using Ringtoets.Common.Data.DikeProfiles;
using Ringtoets.Common.Data.FailureMechanism;
using Ringtoets.HydraRing.Data;

namespace Ringtoets.Common.Forms.Views
{
    /// <summary>
    /// Factory for creating arrays of <see cref="MapFeature"/> to use in <see cref="MapData"/>
    /// (created via <see cref="RingtoetsMapDataFactory"/>).
    /// </summary>
    public static class RingtoetsMapDataFeaturesFactory
    {
        /// <summary>
        /// Create reference line features based on the provided <paramref name="referenceLine"/>.
        /// </summary>
        /// <param name="referenceLine">The <see cref="ReferenceLine"/> to create the reference line features for.</param>
        /// <returns>An array of features or an empty array when <paramref name="referenceLine"/> is <c>null</c>.</returns>
        public static MapFeature[] CreateReferenceLineFeatures(ReferenceLine referenceLine)
        {
            return referenceLine != null
                       ? GetMapFeatures(referenceLine.Points)
                       : new MapFeature[0];
        }

        /// <summary>
        /// Create hydraulic boundary database location features based on the provided <paramref name="hydraulicBoundaryDatabase"/>.
        /// </summary>
        /// <param name="hydraulicBoundaryDatabase">The <see cref="HydraulicBoundaryDatabase"/> to create the location features for.</param>
        /// <returns>An array of features or an empty array when <paramref name="hydraulicBoundaryDatabase"/> is <c>null</c>.</returns>
        public static MapFeature[] CreateHydraulicBoundaryDatabaseFeatures(HydraulicBoundaryDatabase hydraulicBoundaryDatabase)
        {
            return hydraulicBoundaryDatabase != null
                       ? GetMapFeatures(hydraulicBoundaryDatabase.Locations.Select(l => l.Location))
                       : new MapFeature[0];
        }

        /// <summary>
        /// Create section features based on the provided <paramref name="sections"/>.
        /// </summary>
        /// <param name="sections">The collection of <see cref="FailureMechanismSection"/> to create the section features for.</param>
        /// <returns>An array of features or an empty array when <paramref name="sections"/> is <c>null</c> or empty.</returns>
        public static MapFeature[] CreateFailureMechanismSectionFeatures(IEnumerable<FailureMechanismSection> sections)
        {
            return sections != null && sections.Any()
                       ? new[]
                       {
                           new MapFeature(sections.Select(section => new MapGeometry(new[]
                           {
                               section.Points.Select(p => new Point2D(p.X, p.Y))
                           })))
                       }
                       : new MapFeature[0];
        }

        /// <summary>
        /// Create section start point features based on the provided <paramref name="sections"/>.
        /// </summary>
        /// <param name="sections">The collection of <see cref="FailureMechanismSection"/> to create the section start point features for.</param>
        /// <returns>An array of features or an empty array when <paramref name="sections"/> is <c>null</c> or empty.</returns>
        public static MapFeature[] CreateFailureMechanismSectionStartPointFeatures(IEnumerable<FailureMechanismSection> sections)
        {
            return sections != null && sections.Any()
                       ? GetMapFeatures(sections.Select(sl => sl.GetStart()))
                       : new MapFeature[0];
        }

        /// <summary>
        /// Create section end point features based on the provided <paramref name="sections"/>.
        /// </summary>
        /// <param name="sections">The collection of <see cref="FailureMechanismSection"/> to create the section end point features for.</param>
        /// <returns>An array of features or an empty array when <paramref name="sections"/> is <c>null</c> or empty.</returns>
        public static MapFeature[] CreateFailureMechanismSectionEndPointFeatures(IEnumerable<FailureMechanismSection> sections)
        {
            return sections != null && sections.Any()
                       ? GetMapFeatures(sections.Select(sl => sl.GetLast()))
                       : new MapFeature[0];
        }

        /// <summary>
        /// Create features for the foreshore and dike geometry of the <paramref name="dikeProfiles"/>.
        /// </summary>
        /// <param name="dikeProfiles">The profiles to create features for.</param>
        /// <returns>An array of features or an empty array when <paramref name="dikeProfiles"/> is <c>null</c> or empty.</returns>
        public static MapFeature[] CreateDikeProfilesFeatures(IEnumerable<DikeProfile> dikeProfiles)
        {
            return dikeProfiles != null && dikeProfiles.Any()
                       ? new[]
                       {
                           new MapFeature(dikeProfiles.Select(dp => new MapGeometry(GetWorldPoints(dp.ForeshoreProfile)))),
                           new MapFeature(dikeProfiles.Select(dp => new MapGeometry(GetWorldPoints(dp)))), 
                       }
                       : new MapFeature[0];
        }

        private static IEnumerable<IEnumerable<Point2D>> GetWorldPoints(DikeProfile dikeProfile)
        {
            return new[]
            {
                AdvancedMath2D.FromXToXY(
                dikeProfile.DikeGeometry.Select(p => p.Point.X).ToArray(), 
                dikeProfile.WorldReferencePoint, 
                dikeProfile.X0,
                dikeProfile.Orientation)
            };
        }

        private static IEnumerable<IEnumerable<Point2D>> GetWorldPoints(ForeshoreProfile foreshoreProfile)
        {
            return new[]
            {
                AdvancedMath2D.FromXToXY(
                foreshoreProfile.Geometry.Select(p => p.X).ToArray(), 
                foreshoreProfile.WorldReferencePoint, 
                foreshoreProfile.X0,
                foreshoreProfile.Orientation)
            };
        }

        private static MapFeature[] GetMapFeatures(IEnumerable<Point2D> points)
        {
            return new[]
            {
                new MapFeature(new[]
                {
                    new MapGeometry(new[]
                    {
                        points
                    })
                })
            };
        }
    }
}