downkyi/DownKyi.Core/BiliApi/Models/Json/SubtitleJson.cs

using Newtonsoft.Json;
using System;
using System.Collections.Generic;

namespace DownKyi.Core.BiliApi.Models.Json
{
    public class SubtitleJson : BaseModel
    {
        [JsonProperty("font_size")]
        public float FontSize { get; set; }
        [JsonProperty("font_color")]
        public string FontColor { get; set; }
        [JsonProperty("background_alpha")]
        public float BackgroundAlpha { get; set; }
        [JsonProperty("background_color")]
        public string BackgroundColor { get; set; }
        [JsonProperty("Stroke")]
        public string Stroke { get; set; }
        [JsonProperty("body")]
        public List<Subtitle> Body { get; set; }

        /// <summary>
        /// srt格式字幕
        /// </summary>
        /// <returns></returns>
        public string ToSubRip()
        {
            string subRip = string.Empty;
            for (int i = 0; i < Body.Count; i++)
            {
                subRip += $"{i + 1}\n";
                subRip += $"{Second2hms(Body[i].From)} --> {Second2hms(Body[i].To)}\n";
                subRip += $"{Body[i].Content}\n";
                subRip += "\n";
            }

            return subRip;
        }

        /// <summary>
        /// 秒数转 时:分:秒 格式
        /// </summary>
        /// <param name="seconds"></param>
        /// <returns></returns>
        private static string Second2hms(float seconds)
        {
            if (seconds < 0)
            {
                return "00:00:00,000";
            }

            int i = (int)Math.Floor(seconds / 1.0);
            int dec = (int)(Math.Round(seconds % 1.0f, 2) * 100);
            if (dec >= 100)
            {
                dec = 99;
            }

            int min = (int)Math.Floor(i / 60.0);
            int second = (int)(i % 60.0f);

            int hour = (int)Math.Floor(min / 60.0);
            min = (int)Math.Floor(min % 60.0f);

            return $"{hour:D2}:{min:D2}:{second:D2},{dec:D3}";
        }

    }
}