using FFMpegCore;
using SpineViewer.Utils;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SpineViewer.Spine.SpineExporter
{
    /// <summary>
    /// MP4 导出参数
    /// </summary>
    public class WebpExporter : FFmpegVideoExporter
    {
        public WebpExporter()
        {
            FPS = 24;
        }

        public override string Format => "webp";

        public override string Suffix => ".webp";

        /// <summary>
        /// 编码器
        /// </summary>
        public string Codec { get; set; } = "libwebp_anim";

        /// <summary>
        /// 是否无损
        /// </summary>
        public bool Lossless { get; set; } = false;

        /// <summary>
        /// 质量
        /// </summary>
        public int Quality { get => quality; set => quality = Math.Clamp(value, 0, 100); }
        private int quality = 75;

        /// <summary>
        /// 像素格式
        /// </summary>
        public string PixelFormat { get; set; } = "yuva420p";

        /// <summary>
        /// 循环次数, 0 无限循环, 取值范围 [0, 65535]
        /// </summary>
        public int Loop { get => loop; set => loop = Math.Clamp(value, 0, 65535); }
        private int loop = 0;

        public override string FileNameNoteSuffix => $"{Codec}_{Quality}_{PixelFormat}";

        public override void SetOutputOptions(FFMpegArgumentOptions options)
        {
            base.SetOutputOptions(options);
            options.WithVideoCodec(Codec).ForcePixelFormat(PixelFormat).WithCustomArgument($"-lossless {(Lossless ? 1 : 0)} -quality {Quality} -loop {Loop}");
        }
    }

    public class WebpExporterProperty(WebpExporter exporter) : FFmpegVideoExporterProperty(exporter)
    {
        [Browsable(false)]
        public override WebpExporter Exporter => (WebpExporter)base.Exporter;

        /// <summary>
        /// 编码器
        /// </summary>
        [StringEnumConverter.StandardValues("libwebp_anim", "libwebp", Customizable = true)]
        [TypeConverter(typeof(StringEnumConverter))]
        [Category("[3] 格式参数"), DisplayName("编码器"), Description("-c:v, 要使用的编码器")]
        public string Codec { get => Exporter.Codec; set => Exporter.Codec = value; }

        /// <summary>
        /// 是否无损
        /// </summary>
        [Category("[3] 格式参数"), DisplayName("无损"), Description("-lossless, 0 表示有损, 1 表示无损")]
        public bool Lossless { get => Exporter.Lossless; set => Exporter.Lossless = value; }

        /// <summary>
        /// CRF
        /// </summary>
        [Category("[3] 格式参数"), DisplayName("质量"), Description("-quality, 取值范围 0-100, 默认值 75")]
        public int Quality { get => Exporter.Quality; set => Exporter.Quality = value; }

        /// <summary>
        /// 像素格式
        /// </summary>
        [StringEnumConverter.StandardValues("yuv420p", "yuva420p", Customizable = true)]
        [TypeConverter(typeof(StringEnumConverter))]
        [Category("[3] 格式参数"), DisplayName("像素格式"), Description("-pix_fmt, 要使用的像素格式")]
        public string PixelFormat { get => Exporter.PixelFormat; set => Exporter.PixelFormat = value; }

        /// <summary>
        /// 透明度阈值
        /// </summary>
        [Category("[3] 格式参数"), DisplayName("循环次数"), Description("-loop, 循环次数, 0 无限循环, 取值范围 [0, 65535]")]
        public int Loop { get => Exporter.Loop; set => Exporter.Loop = value; }
    }
}