Gigas002/GTiff2Tiles

using System.Xml.Serialization;
using GTiff2Tiles.Core.Coordinates;
using GTiff2Tiles.Core.Enums;
using GTiff2Tiles.Core.Images;
using GTiff2Tiles.Core.Localization;

namespace GTiff2Tiles.Core.TileMapResource;

/// <summary>
/// TileMap's TileSets
/// </summary>
[Serializable]
[XmlRoot(ElementName = "TileSets")]
public record TileSets
{
    #region Properties

    /// <summary>
    /// Collection of <see cref="TileSet"/>s
    /// </summary>
    [XmlElement(ElementName = "TileSet")]
    public HashSet<TileSet> TileSetCollection { get; }

    /// <summary>
    /// Tile's profile
    /// </summary>
    [XmlAttribute(AttributeName = "profile")]
    public string Profile { get; init; }

    #endregion

    #region Constructors

    /// <summary>
    /// Default constructor
    /// </summary>
    public TileSets() => TileSetCollection = new HashSet<TileSet>();

    /// <summary>
    /// Initialize a new tile sets
    /// </summary>
    /// <param name="tileSetCollection">Collection of <see cref="TileSet"/>s</param>
    /// <param name="profile">Tile's profle</param>
    public TileSets(IEnumerable<TileSet> tileSetCollection, string profile) => (TileSetCollection, Profile) = (tileSetCollection.ToHashSet(), profile);

    /// <summary>
    /// Initialize a new tile sets
    /// </summary>
    /// <param name="tileSetCollection">Collection of <see cref="TileSet"/>s</param>
    /// <param name="coordinateSystem">Tile's <see cref="CoordinateSystem"/></param>
    /// <exception cref="NotSupportedException"/>
    public TileSets(IEnumerable<TileSet> tileSetCollection, CoordinateSystem coordinateSystem)
    {
        TileSetCollection = tileSetCollection.ToHashSet();

        Profile = coordinateSystem switch
        {
            CoordinateSystem.Epsg4326 => "geodetic",
            CoordinateSystem.Epsg3857 => "mercator",
            _ => throw new NotSupportedException(string.Format(Strings.Culture, Strings.NotSupported,
                                                               coordinateSystem))
        };
    }

    #endregion

    #region Methods

    /// <summary>
    /// Generates collection of <see cref="TileSet"/>s
    /// </summary>
    /// <param name="minZ">Minimal zoom in collection</param>
    /// <param name="maxZ">Maximal zoom in collection</param>
    /// <param name="tileSize">Tile's size</param>
    /// <param name="coordinateSystem">Tile's coordinate system</param>
    /// <returns>Collection of <see cref="TileSet"/>s</returns>
    public static IEnumerable<TileSet> GenerateTileSetCollection(int minZ, int maxZ, Size tileSize, CoordinateSystem coordinateSystem)
    {
        for (int zoom = minZ; zoom <= maxZ; zoom++)
        {
            double resoultion = GeoCoordinate.Resolution(zoom, tileSize, coordinateSystem);

            yield return new($"{zoom}", resoultion, zoom);
        }
    }

    #endregion
}