using Furion;
using GDZZ.Core.Entity;
using GDZZ.Core;
using Microsoft.AspNetCore.Http;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Yitter.IdGenerator;

namespace GDZZ.Application.Help
{
    public static class Utils
    {

        //自定义进制(0、O没有加入,容易混淆；同时排除X,用X补位)
        private static char[] r = new char[] { 'Q', 'W', 'E', '8', 'A', 'S', '2', 'D', 'Z', '9', 'C', '7', 'P', '5', 'I', 'K', '3', 'M', 'J', 'U', 'F', 'R', '4', 'V', 'Y', 'L', 'T', 'N', '6', 'B', 'G', 'H' };
        //不能与自定义进制有重复
        private static char b = 'X';
        //进制长度
        private static int binLen = r.Length;
        //生成的邀请码长度
        private static int length = 6;

        static Random random = new Random();
        /// <summary>
        /// 
        /// </summary>
        /// <param name="date"></param>
        /// <returns></returns>
        public static bool ShowHelp(DateTime date)
        {
            bool isTheDay = false;
            //判断日期是否是当天
            DateTime time = DateTime.Now;//当天
            DateTime time2 = new DateTime(time.Year, time.Month, time.Day);//当天的零时零分
            DateTime time3 = time.AddDays(1);//后一天
            DateTime time4 = new DateTime(time3.Year, time3.Month, time3.Day);//后一天的零时零分

            if (date > time2 && date < time4)
            {
                isTheDay = true;
            }
            else
            {
                isTheDay = false;
            }
            return isTheDay;
        }



        /// <summary>
        /// 根据ID生成六位随机邀请码
        /// </summary>
        /// <param name="id">用户id</param>
        /// <returns>返回6位邀请码</returns>
        public static string Encode(long id)
        {
            char[] buf = new char[32];
            int charPos = 32;

            while ((id / binLen) > 0)
            {
                int ind = (int)(id % binLen);
                buf[--charPos] = r[ind];
                id /= binLen;
            }
            buf[--charPos] = r[(int)(id % binLen)];
            String str = new String(buf, charPos, (32 - charPos));
            //不够长度的自动随机补全
            if (str.Length < length)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append(b);
                Random rnd = new Random();
                for (int i = 1; i < length - str.Length; i++)
                {
                    sb.Append(r[rnd.Next(binLen)]);
                }
                str += sb.ToString();
            }
            return str;
        }

        public static long NextLong(long minValue, long maxValue)
        {
            byte[] buffer = new byte[8];
            random.NextBytes(buffer);
            long result = BitConverter.ToInt64(buffer, 0);
            return (Math.Abs(result % (maxValue - minValue)) + minValue);
        }

        public static string stringToUnicode(string s)
        {
            if (!containsEmoji(s))
                return s;

            string str = "";
            for (int i = 0; i < s.Length; i++)
            {
                int ch = (int)s[i];
                if (ch > 255)
                {
                    str += "\\u" + String.Format("{0:X}", ch);
                }
                else
                {
                    str += s[i].ToString();
                }
            }
            return str;
        }

        public static bool containsEmoji(String str)
        {
            int len = str.Length;
            for (int i = 0; i < len; i++)
            {
                if (isEmojiCharacter(str[i]))
                {
                    return true;
                }
            }
            return false;
        }

        public static bool isEmojiCharacter(char codePoint)
        {
            return !((codePoint == 0x0) || (codePoint == 0x9) || (codePoint == 0xA)
                    || (codePoint == 0xD)
                    || ((codePoint >= 0x20) && (codePoint <= 0xD7FF))
                    || ((codePoint >= 0xE000) && (codePoint <= 0xFFFD))
                    || ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF)));
        }


        /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="file"></param>
        /// <param name="pathType"></param>
        /// <param name="fileLocation"></param>
        /// <returns></returns>
        public static async Task<LiveFileOutput> UploadFile(IFormFile file, string pathType, FileLocation fileLocation)
        {
            var fileSizeKb = (long)(file.Length / 1024.0); // 文件大小KB
            var originalFilename = file.FileName; // 文件原始名称
            var fileSuffix = Path.GetExtension(file.FileName).ToLower(); // 文件后缀

            // 先存库获取Id
            var id = YitIdHelper.NextId();
            var newFile = new SysFile
            {
                Id = id,
                FileLocation = (int)FileLocation.LOCAL,
                FileBucket = FileLocation.LOCAL.ToString(),
                FileObjectName = $"{YitIdHelper.NextId()}{fileSuffix}",
                FileOriginName = originalFilename,
                FileSuffix = fileSuffix.TrimStart('.'),
                FileSizeKb = fileSizeKb.ToString(),
                FilePath = pathType
            };
            newFile = await App.GetService<ISqlSugarClient>().Insertable(newFile).ExecuteReturnEntityAsync();

            var finalName = newFile.FileObjectName; // 生成文件的最终名称   
            if (fileLocation == FileLocation.LOCAL) // 本地存储
            {
                var filePath = Path.Combine(App.WebHostEnvironment.WebRootPath, pathType);
                if (!Directory.Exists(filePath))
                    Directory.CreateDirectory(filePath);
                using (var stream = File.Create(Path.Combine(filePath, finalName)))
                {
                    await file.CopyToAsync(stream);
                }
            }
            else if (fileLocation == FileLocation.ALIYUN) // 阿里云OSS
            {
                var filePath = pathType + finalName;
                OSSClientUtil.DeletefileCode(filePath);

                var stream = file.OpenReadStream();
                OSSClientUtil.PushMedia(stream, filePath);
            }
            newFile.FileObjectName = finalName;
            return new LiveFileOutput() { Id = finalName, FileUrl = "/" + pathType + "/" + finalName }; // 返回文件唯一标识
        }


    }
}