// Copyright (C) Stichting Deltares 2025. 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.Linq;
using Deltares.Geometry;
using Deltares.Geotechnics.SurfaceLines;

namespace Deltares.Dam.Data;

/// <summary>
/// Exception class for DikeCoordinateSystemConverter
/// </summary>
public class DikeCoordinateSystemConverterException : Exception
{
    public DikeCoordinateSystemConverterException(string message)
        : base(message) {}
}

/// <summary>
/// class for converting dike object coordinates from global to local system
/// </summary>
public class DikeCoordinateSystemConverter
{
    public void CreateLocalXZObjects(Dike dike)
    {
        ThrowIfInvalidDike(dike);
        foreach (Location location in dike.Locations.Where(x => null != x.SurfaceLine2))
        {
            // This can obviously only be done when SurfaceLine is available
            // In unit test situations sometimes the surfaceline is not defined
            ThrowIfAlreadyConvertedToLocalCoordinates(location.AreLocalXZObjectsCreated, $"Location {location.Name}");
            var coordinateSystemConverter = new CoordinateSystemConverter();
            coordinateSystemConverter.DefineGlobalXYZBasedOnLine(location.SurfaceLine2.Geometry);
            SurfaceLine2 localSurfaceLine = location.SurfaceLine2.FullDeepClone();
            coordinateSystemConverter.ConvertGlobalXYZToLocalXZ(localSurfaceLine.Geometry);

            if (location.LocalXZSurfaceLine2 != null)
            {
                location.LocalXZSurfaceLine2.Dispose();
            }

            location.LocalXZSurfaceLine2 = localSurfaceLine;
            location.AreLocalXZObjectsCreated = true;
        }
    }

    /// <summary>
    /// Validate dike and throw exception if not valid
    /// </summary>
    /// <param name="dike"></param>
    private static void ThrowIfInvalidDike(Dike dike)
    {
        try
        {
            dike.Validate();
        }
        catch (Exception exception)
        {
            throw new DikeCoordinateSystemConverterException(exception.Message);
        }
    }

    /// <summary>
    /// Throws exception if surfaceline already has been converted
    /// </summary>
    /// <param name="dike"></param>
    private static void ThrowIfAlreadyConvertedToLocalCoordinates(bool isConvertedToLocalCoordinates, string objectDescription)
    {
        if (isConvertedToLocalCoordinates)
        {
            throw new DikeCoordinateSystemConverterException($"{objectDescription} has already been converted from global to local coordinates");
        }
    }
}