// Copyright (C) Stichting Deltares 2024. All rights reserved.
// 
// This file is part of the Dam Engine.
// 
// The Dam Engine is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
// 
// You should have received a copy of the GNU Affero 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 Deltares.DamEngine.Data.General;
using Deltares.DamEngine.Data.General.PlLines;

namespace Deltares.DamEngine.Calculators.PlLinesCreator;

/// <summary>
/// This class is responsible for creating a PL line where the coordinates are sorted on x. 
/// No logic will be applied on how the PL is constructed. Just a simple data structure with an 
/// insert method to insert new points.
/// </summary>
internal class PlLineConstructor
{
    readonly IDictionary<double, PlLinePoint> line = new SortedDictionary<double, PlLinePoint>();

    /// <summary>
    /// Inserts the specified point.
    /// </summary>
    /// <remarks>The point will be inserted in the line based on the X value</remarks>
    /// <param name="point">The point.</param>
    public void Insert(PlLinePoint point)
    {
        if (line.ContainsKey(point.X))
        {
            line[point.X] = point;
        }
        else
        {
            line.Add(point.X, point);
        }
    }

    /// <summary>
    /// Inserts the specified point.
    /// </summary>
    /// <remarks>The point will be inserted in the line based on the X value</remarks>
    /// <param name="x">The x.</param>
    /// <param name="z">The z.</param>
    public void Insert(double x, double z)
    {
        Insert(new PlLinePoint(x, z));
    }

    public double GetLastZ()
    {
        return line[line.Keys.Max()].Z;
    }

    /// <summary>
    /// Gets the PL line from the internal constructed line.
    /// </summary>
    public PlLine CreatePlLine(PlLineType type)
    {
        var plLine = new PlLine
        {
            PlLineType = type
        };
        foreach (KeyValuePair<double, PlLinePoint> kvp in line)
        {
            plLine.Points.Add(kvp.Value);
        }

        return plLine;
    }
}