using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Net;
using System.Timers;
using Dicom.Imaging;
using DicomTool.Model;
using DicomTool.Utils;

namespace DicomTool
{
    internal class Program
    {
        // 设置循环间隔时间为10分钟
        private const int intervalInMinutes = 60;
        // PACS 共享文件访问
        private const string UserName = "XBDLISUser";
        private const string Password = "BlueFlag.Lis!@#";
        // DCM文件下载存放路径
        private static readonly string DcmPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DicomFiles/");
        private static readonly string EcgPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "EcgFiles/"); 

        private const string ConnectionString = @"Data Source=200.200.200.71;Initial Catalog=peisdb;User ID=sa;Password=wVJeC28@eY*&F#5NGL^eYC3m;";
         
        private static void Main(string[] args)
        {
            Console.WriteLine($"【启动】{DateTime.Now:yyyy-MM-dd HH:mm}");
            // 创建一个 Timer 实例
            var timer = new Timer();
            try
            {
                DownEcgFtpImage(); 

                Console.ReadKey();
                timer.Interval = intervalInMinutes * 60 * 1000;
                // 设置为 true，使得 Timer 每隔设定的间隔时间自动触发一次 Elapsed 事件
                timer.AutoReset = true;
                // 绑定 Elapsed 事件处理程序
                timer.Elapsed += Timer_Elapsed;
                // 启动 Timer
                timer.Start();
                // 阻止控制台程序退出
                Console.ReadKey();
                // 停止 Timer
                timer.Stop();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                timer.Stop();
            }

            Console.WriteLine($"【停止】{DateTime.Now:yyyy-MM-dd HH:mm}");
            Console.ReadKey();
        }

        /// <summary>
        /// 定时执行任务
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void Timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            Console.WriteLine($@"执行-{DateTime.Now:yyyy-MM-dd HH:mm}"); 
            DownEcgFtpImage();
        }
        
        public static void DownEcgFtpImage()
        {
            Console.WriteLine("-----------------------------------");
            Console.WriteLine($"【ECG-START】{DateTime.Now:yyyy-MM-dd HH:mm}");
            var files = DAOHelp.GetDataBySQL<ReportEcg>
                ($@"SELECT id,ReportUrl FROM Report_GSEXD WHERE ReportUrl is not null  and ReportData is null");
            Console.WriteLine("[ECG-ReportCount]" + files.Count);
            if (files.Count == 0)
                return;
            var name = "TJ_HXECG";
            var password = "123456";
            if (!Directory.Exists(EcgPath))
            {
                Directory.CreateDirectory(EcgPath);
            } 
            DownloadFtpFile(files, name, password, EcgPath);
            UploadEcgImg(EcgPath, files.Select(s => s.ID.ToString()).ToList());
            Console.WriteLine("ECG 下载完毕");
            Console.WriteLine($"【ECG-END】{DateTime.Now:yyyy-MM-dd HH:mm}");
            Console.WriteLine("-----------------------------------");
        }

        /// <summary>
        /// 1、将ecg图片发送到服务器
        /// </summary>
        public static void UploadEcgImg(string folderPath, List<string> idList)
        {
            var i = 0;
            // 建立数据库连接
            using (var connection = new SqlConnection(ConnectionString))
            {
                // 遍历文件路径并输出
                foreach (var id in idList)
                {
                    var jpgFilePath = Path.Combine(folderPath, id + ".jpg");
                    try
                    {
                        if (!File.Exists(jpgFilePath))
                        {
                            Console.WriteLine(id + "NotFound" + jpgFilePath);
                            continue;
                        }

                        // 加载JPG图片
                        using (var image = Image.FromFile(jpgFilePath))
                        {
                            // 创建内存流
                            using (MemoryStream memoryStream = new MemoryStream())
                            {
                                // 将图像保存到内存流中，指定图像格式为JPEG
                                image.Save(memoryStream, ImageFormat.Jpeg);
                                // 将内存流中的数据复制到字节数组
                                var imgBytes = memoryStream.ToArray();
                                //上传
                                {
                                    connection.Open();
                                    // 创建插入记录的 SQL 查询
                                    string updateEcgRpt =
                                        @"update Report_GSEXD set ReportData=@ReportData where id=@ID";
                                    // 创建命令对象
                                    using (var command = new SqlCommand(updateEcgRpt, connection))
                                    {
                                        // 设置参数值
                                        command.Parameters.AddWithValue("@ReportData", imgBytes);
                                        command.Parameters.AddWithValue("@ID", id);
                                        Console.WriteLine($@"【上传】{id}.jpg");
                                        // 执行插入操作
                                        command.ExecuteNonQuery();
                                        i++;
                                    }

                                    connection.Close();
                                }
                            }
                        }

                        File.Delete(jpgFilePath);
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(id + "-" + e.Message);
                    }
                }
            }

            Console.WriteLine($@"【上传成功】{i}");
        }

        /// <summary>
        /// 下载ECG图片
        /// </summary>
        /// <param name="ftpUriList"></param>
        /// <param name="username"></param>
        /// <param name="password"></param>
        /// <param name="localFilePath"></param>
        public static void DownloadFtpFile(List<ReportEcg> ftpUriList, string username, string password, string localFilePath)
        {
            // 确保本地文件路径是目录
            if (!Directory.Exists(localFilePath))
            {
                Directory.CreateDirectory(localFilePath);
            }

            foreach (var reportEcg in ftpUriList)
            {
                // 创建 FtpWebRequest 对象
                try
                {
                    var request = (FtpWebRequest)WebRequest.Create(reportEcg.ReportUrl);
                    request.Method = WebRequestMethods.Ftp.DownloadFile;
                    request.Credentials = new NetworkCredential(username, password);
                    // 获取响应并读取数据
                    var response = (FtpWebResponse)request.GetResponse();
                    var responseStream = response.GetResponseStream();

                    // 获取文件名
                    // string fileName = Path.GetFileName(new Uri(reportEcg.ReportUrl).LocalPath);
                    var fileName = reportEcg.ID + ".jpg";
                    Console.WriteLine("【下载】" + reportEcg.ID + ".jpg");
                    var localFileFullPath = Path.Combine(localFilePath, fileName);
                    // 将 FTP 文件内容写入本地文件
                    using (FileStream fileStream = new FileStream(localFileFullPath, FileMode.Create, FileAccess.Write))
                    {
                        byte[] buffer = new byte[4096];
                        int bytesRead;
                        while ((bytesRead = responseStream.Read(buffer, 0, buffer.Length)) != 0)
                        {
                            fileStream.Write(buffer, 0, bytesRead);
                        }
                    }
                    responseStream.Close();
                    response.Close();
                }
                catch (WebException ex)
                {
                    // 处理异常，例如打印错误信息
                    Console.WriteLine("Download failed for " + reportEcg + ": " + ex.Message);
                    continue;
                }
            }
        }
    }
}