using FFmpeg.NET.Events;
using FFmpeg.NET;
using VideoAnalysisCore.AICore.SherpaOnnx;
using VideoAnalysisCore.Common;
using System.Threading.Tasks;
using static System.Runtime.InteropServices.JavaScript.JSType;
using System.Xml.Linq;
using System.Runtime.InteropServices;

namespace VideoAnalysisCore.AICore.FFMPGE
{
    /// <summary>
    /// Ffmpeg处理程序
    /// </summary>
    public class FFMPGEHandle
    {
        /// <summary>
        /// 
        /// </summary>
        public static string FFmpegPath = RuntimeInformation.IsOSPlatform(OSPlatform.Linux)
                    ? $"/usr/bin/ffmpeg"
                    : Path.Combine(AppCommon.AIModelFile, "ffmpeg.exe");
        /// <summary>
        /// 音频转码为 wav_16k
        /// </summary>
        /// <param name="task">任务id</param>
        /// <returns></returns>
        public static async Task Audio2WAV16KAsync(string task)
        {
            var filePath = RedisExpand.Redis.HGet(RedisExpandKey.Task(task), "LocalMediaPath");
            if (string.IsNullOrEmpty(filePath))
                throw new Exception($"任务id[{task}] 无效");

            // 打开输入文件
            var inputFile = new InputFile(filePath);
            var outputFile = new OutputFile(Path.Combine(task.LocalPath(), Path.GetFileNameWithoutExtension(filePath) + ".wav"));
            var ffmpeg = new Engine(FFmpegPath);

            ffmpeg.Progress += OnProgress;
            ffmpeg.Data += OnData;
            ffmpeg.Complete += OnComplete;
            ffmpeg.Error += (sender, e) =>
            {
                throw new Exception($"[{e.Input.Name} => {e.Output.Name}]: 错误: {e.Exception.Message}");
            };

            var conversionOptions = new ConversionOptions
            {
                ExtraArguments = "-ar 16000 -ac 1"
                //+ (AppCommon.AppSetting.FFmpeg.TimeSlice == 0
                //?string.Empty
                //: $"-f segment -reset_timestamps 1 -segment_time {AppCommon.AppSetting.FFmpeg.TimeSlice}")
            };

            var res = await ffmpeg.ConvertAsync(inputFile, outputFile, conversionOptions);
            //加入下一队列
            RedisExpand.InsertChannel(Enum.RedisChannelEnum.ParsingCaptions, task);

        }
        private static void OnProgress(object sender, ConversionProgressEventArgs e)
        {
            Console.WriteLine("[{0} => {1}]", e.Input.MetaData.FileInfo.Name, e.Output.Name);
            Console.WriteLine("比特率: {0}", e.Bitrate);
            Console.WriteLine("Fps: {0}", e.Fps);
            Console.WriteLine("基本框架: {0}", e.Frame);
            Console.WriteLine("处理持续时间: {0}", e.ProcessedDuration);
            Console.WriteLine("Size: {0} kb", e.SizeKb);
            Console.WriteLine("总持续时间: {0}\n", e.TotalDuration);
        }

        private static void OnData(object sender, ConversionDataEventArgs e)
        {
            Console.WriteLine(e.Data);
        }

        private static void OnComplete(object sender, ConversionCompleteEventArgs e)
        {
            Console.WriteLine("转换完成=>" + e.Output.Name);
        }
    }
}