using System.Collections.Generic;
using SixLabors.ImageSharp.Formats;
using SixLabors.ImageSharp.Formats.Bmp;
using SixLabors.ImageSharp.Formats.Gif;
using SixLabors.ImageSharp.Formats.Jpeg;
using SixLabors.ImageSharp.Formats.Pbm;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.Formats.Tga;
using SixLabors.ImageSharp.Formats.Tiff;
using SixLabors.ImageSharp.Formats.Webp;

namespace Dpz.Core.Web.Library
{
    public class DefaultFormat : IImageFormat
    {
        private readonly IImageFormat _imageFormat = null;

        public DefaultFormat(string type)
        {
            type = type?.ToLower() ?? "";
            switch (type)
            {
                case "bmp":
                    _imageFormat = BmpFormat.Instance;
                    break;
                case "gif":
                    _imageFormat = GifFormat.Instance;
                    break;
                case "jpeg":
                case "jpg":
                    _imageFormat = JpegFormat.Instance;
                    break;
                case "png":
                    _imageFormat = PngFormat.Instance;
                    break;
                case "pbm":
                    _imageFormat = PbmFormat.Instance;
                    break;
                case "webp":
                    _imageFormat = WebpFormat.Instance;
                    break;
                case "tga":
                    _imageFormat = TgaFormat.Instance;
                    break;
                case "tiff":
                    _imageFormat = TiffFormat.Instance;
                    break;
            }
        }

        public string Name => _imageFormat?.Name ?? "";

        public string DefaultMimeType => _imageFormat?.DefaultMimeType ?? "image/*";

        public IEnumerable<string> MimeTypes => _imageFormat?.MimeTypes ?? new List<string>();
        public IEnumerable<string> FileExtensions => _imageFormat?.FileExtensions ?? new List<string>();
    }
}