using FreeRedis;
using Microsoft.Extensions.DependencyModel;
using SqlSugar;
using SqlSugar.IOC;
using System.Reflection;
using System.Runtime.Loader;
using System.Text;
using System.Threading.Tasks;
using VideoAnalysisCore.AICore.SherpaOnnx;
using VideoAnalysisCore.Enum;
using VideoAnalysisCore.Model.Dto;
using Whisper.net;

namespace VideoAnalysisCore.Common
{

    /// <summary>
    /// 程序 公共变量
    /// </summary>
    public static class AppCommon
    {
        /// <summary>
        /// 应用有效程序集
        /// </summary>
        public static readonly IEnumerable<Assembly> Assemblies;
        /// <summary>
        /// 主库数据库表类型
        /// </summary>
        public static readonly IEnumerable<Type> DbMatserType;
        static AppCommon()
        {
            try
            {

                Assemblies = ExpandFunction.GetAssemblies();
                var assembliesType = Assemblies.Where(s => s.FullName.Contains("VideoAnalysis")).SelectMany(s => s.ExportedTypes
                    .Where(u => !u.IsInterface && !u.IsAbstract && u.IsClass && u.IsDefined(typeof(SugarTable), false)));
                DbMatserType = assembliesType;
            }
            catch
            {
            }
                //.Where(u => !u.IsDefined(typeof(SplitTableAttribute), false))
                //.Where(u => !typeof(Model.DataCenterYH.IDataCenterYHModel).IsAssignableFrom(u))
                //.Where(u => !u.IsSubclassOf(typeof(YQ_BaseEntity)));
        }

        /// <summary>
        /// 程序配置
        /// </summary>
        public static AppConfig Config = new AppConfig();
        /// <summary>
        /// ServiceProvider
        /// </summary>
        public static IServiceProvider? Services;
        /// <summary>
        /// 文件下载路径
        /// </summary>
        public static string TaskCachedFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "TaskCachedFile");

        /// <summary>
        /// 模型地址
        /// </summary>
        public static string AIModelFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "AICore", "_Static");


    }

    /// <summary>
    /// 拓展函数
    /// </summary>
    public static class ExpandFunction 
    {

        /// <summary>
        /// 获取应用有效程序集
        /// </summary>
        /// <returns>IEnumerable</returns>
        public static List<Assembly> GetAssemblies()
        {
            // 获取当前解决方案的所有程序集 
            var assembliesStr = DependencyContext.Default.RuntimeLibraries
            .Where(u => !u.Name.StartsWith(nameof(Microsoft))
                && !u.Name.StartsWith(nameof(System))
                 && !u.Name.StartsWith("netstandard")
                 && (u.Type == "project"));

            var assemblies = assembliesStr.Select(a => AssemblyLoadContext.Default.LoadFromAssemblyName(new AssemblyName(a.Name))).ToList();
            var assemblies1 = Assembly.GetEntryAssembly().GetReferencedAssemblies().Where(x => x.Name.StartsWith("App.") || x.Name.StartsWith("UserCenter."))
                .Select(a => AssemblyLoadContext.Default.LoadFromAssemblyName(new AssemblyName(a.Name))).ToList();
            foreach (var item in assemblies1)
            {
                if (!assemblies.Contains(item))
                    assemblies.Add(item);
            }
            return assemblies;
        }
        /// <summary>
        /// 获取Task处理后的 说话人字幕
        /// </summary>
        public static TotalCaptionsDto GetSpeakerCaptions(string task)
        {
            var captionsArr = RedisExpand.Redis.HMGet<SegmentData[]>(RedisExpandKey.Task(task), "Captions").FirstOrDefault();
            var speakerArr = RedisExpand.Redis.HMGet<OfflineSpeakerRes[]>(RedisExpandKey.Task(task), "Speaker").FirstOrDefault();
            if (captionsArr is null || captionsArr.Length == 0
                || speakerArr is null || speakerArr.Length == 0)
                throw new Exception("音频解析数据异常");
            // 教师说话人Id
            var techerId = speakerArr.GroupBy(s=>s.SpeakerIndex).Select(s => (s.Key,s.Sum(x=>x.Total)))
                .OrderByDescending(s=>s.Item2).First().Key;
            var teacherSpeaking = 0m;
            var studentSpeaking = 0m;
            var results = new Dictionary<SegmentData, List<int>>();
            foreach (var segment in captionsArr)
            {
                var spList = new List<int>();
                foreach (var speakerRes in speakerArr)
                {
                    if ((double)speakerRes.Start > segment.End.TotalSeconds)
                        break;
                    if (segment.Start.TotalSeconds <= (double)speakerRes.End 
                        && segment.End.TotalSeconds >= (double)speakerRes.Start)
                    {
                        if (speakerRes.SpeakerIndex == techerId)
                            teacherSpeaking += speakerRes.Total;
                        else
                            studentSpeaking += speakerRes.Total;
                        spList.Add(speakerRes.SpeakerIndex);
                        break;
                    }
                }
                results.Add(segment, spList);
            }
            //拼接 提示词字幕源
            var stringBuilder = new StringBuilder();
            foreach (var item in results)
                stringBuilder.Append($"{item.Value.First()}:{item.Key.Start.TotalSeconds}:{item.Key.End.TotalSeconds}:{item.Key.Text},");

            //todo 分析上课时间段情况 分析 独立学习 小组合作 随堂练习等情况

            return new TotalCaptionsDto
            {
                StudentSpeaking = studentSpeaking,
                TeacherSpeaking = teacherSpeaking,
                Captions = stringBuilder.ToString(),
                TimeBase = results.Select(s=>new TimeBase() 
                {
                    Start = s.Key.Start.TotalSeconds,
                    End = s.Key.End.TotalSeconds,
                    Type = s.Value.Count == 1 && s.Value.First() == techerId 
                        ? TimeBaseTypeEnum.教师讲授
                        : TimeBaseTypeEnum.互动交流
                })
            };
        }
        /// <summary>
        /// 转化枚举
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        public static T? ToEnum<T>(this object data) where T : struct, System.Enum
        {
            if (data is null || string.IsNullOrEmpty(data?.ToString()))
                return null;
            return System.Enum.Parse<T>(data.ToString());
        }
        /// <summary>
        /// 转化本地缓存目录
        /// </summary>
        /// <param name="taskId">任务id</param>
        /// <returns></returns>
        public static string LocalPath(this string taskId)
        {
            return Path.Combine(AppCommon.TaskCachedFile, taskId);
        }

    }

    /// <summary>
    /// ffmpeg配置
    /// </summary>
    public class KIMIConfig
    {
        /// <summary>
        /// kimi请求 公开的服务地址
        /// </summary>
        public string Host { get; set; } = string.Empty;
        /// <summary>
        /// api的密钥
        /// </summary>
        public string ApiKey { get; set; } = string.Empty;
    }
    /// <summary>
    /// 文本模型 配置
    /// </summary>
    public class ChatGptConfig
    {
        /// <summary>
        /// KIMI
        /// <para></para>
        /// </summary>
        public KIMIConfig KIMI { get; set; } = new KIMIConfig();
    }

    /// <summary>
    /// ffmpeg配置
    /// </summary>
    public class FFmpegConfig
    {
        /// <summary>
        /// 音频切片时间段
        /// <para>0不切片</para>
        /// </summary>
        public int TimeSlice { get; set; } = 0; 
    }
    /// <summary>
    /// Whisper配置
    /// </summary>
    public class WhisperConfig 
    {
        /// <summary>
        /// 模型名称
        /// </summary>
        public string ModelName { get; set; } = string.Empty;

    }
    /// <summary>
    /// redis配置
    /// </summary>
    public class RedisConfig
    {
        /// <summary>
        /// redis连接字符串
        /// </summary>
        public string ConnectionString { get; set; } = string.Empty;
    }

    public class DBConfig
    {
        /// <summary>
        /// 主库链接
        /// </summary>
        public string ConnectionString { get; set; }=string.Empty;
        /// <summary>
        /// 数据库类型
        /// </summary>
        public IocDbType SqlType { get; set; }
        /// <summary>
        /// 启动时更新表结构
        /// </summary>
        public bool UpdateTable { get; set; }

    }
    /// <summary>
    /// 应用程序配置
    /// </summary>
    public class AppConfig
    {
        /// <summary>
        /// redis
        /// </summary>
        public RedisConfig Redis { get; set; } = new RedisConfig();
        /// <summary>
        /// Whisper AI
        /// </summary>
        public WhisperConfig Whisper { get; set; } = new WhisperConfig();
        /// <summary>
        /// FFmpeg
        /// </summary>
        public FFmpegConfig FFmpeg { get; set; } = new FFmpegConfig();
        /// <summary>
        /// ChatGpt
        /// </summary>
        public ChatGptConfig ChatGpt { get; set; } = new ChatGptConfig();
        /// <summary>
        /// 数据库配置
        /// </summary>
        public DBConfig DB { get; set; } = new DBConfig();

    }
}