using Common;
using iTextSharp.text;
using iTextSharp.text.pdf;
using LisPacsDataUpload.Models.Report;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Security.Cryptography.X509Certificates;


namespace LisPacsDataUpload.business
{
    /// <summary>
    /// pdf 工具类 
    /// </summary>
    public class PdfUtils
    {
        /// <summary>
        /// 根据lis版本获取请求生成pdf报告的参数   0中联老版lis 1 中联新版lis  2  专业版临生免  10 标准服务老版lis 11标准服务新版lis  3 三方lis  
        /// </summary>
        /// <returns></returns>
        public static string getPdfParamByLisVersion(int lisVersion, string reportNumber,string bbid,string yzid)
        {

            string dicLis = AppDomain.CurrentDomain.BaseDirectory + "Lis\\";
            if (!Directory.Exists(dicLis))
            {
                Directory.CreateDirectory(dicLis);
            }
            string path = dicLis + "LIS" + bbid+ ".pdf";
            Paramater paramter = new Paramater
            {
                RePortCode = reportNumber,
                PdfPath = $"pdf={path}",
                InvokeType = 4
            };
            if (lisVersion==0)
            {
                //老版lis

                /* Select Distinct 'ZLCISBILL' || Trim(To_Char(b.编号, '00000')) || '-2' 报表编号, a.相关id, d.id 标本id
  From 病人医嘱记录 A,检验标本记录 d, 病历文件列表 B, 病历单据应用 C
  Where a.诊疗项目id = c.诊疗项目id And a.病人来源 = c.应用场合 And c.病历文件id = b.Id And a.Id = :id and a.相关id = d.医嘱id*/
                paramter.ZlSysCode = 100;
                paramter.Params.Add(new SubParameter { Param = $"医嘱id={yzid}" });
                paramter.Params.Add(new SubParameter { Param = $"标本id={bbid}" });
                string strJson = JsonConvert.SerializeObject(paramter);
                LogHelper.Info("strJson==" + strJson);
                if (!Init())
                {
                    LogHelper.Info("Init初始化异常");
                    return "Init初始化异常";
                }
                //生成pdf成功
                if (OutPdf(strJson))
                {
                    return path;
                }

            }
            else if (lisVersion == 1)
            {
                paramter.ZlSysCode = 2500;
                paramter.Params.Add(new SubParameter { Param = $"标本id={bbid}" });
                // 新版lis
                /* Select distinct 'ZLLISBILL00' || Decode(b.病人来源, 2, c.住院单据, 3, c.体检单据, 4, c.院外单据, c.门诊单据) || '-2' 报表编号, a.Id 标本id
 From 检验报告记录 A, 检验申请组合 B, 检验仪器记录 C
 Where  a.Id = b.标本id And a.仪器id = c.Id And b.医嘱id = :id*/
                string strJson= JsonConvert.SerializeObject(paramter);
                LogHelper.Info("strJson=="+ strJson);
                if (!Init())
                {
                    LogHelper.Info("Init初始化异常");
                    return "Init初始化异常";
                }
                //生成pdf成功
                if (OutPdf(strJson))
                {
                    return path;
                }
            }
            else if (lisVersion == 2)
            {
                //专业版临生免
                string sql_zlhr = @"select standard_url from 互认配置表";
                DataTable dt_lis = OracleHelper<object>.RunQueryDS(sql_zlhr);
                string standard_url = dt_lis.Rows[0]["standard_url"].ToString();

                string jsonTemplate = "{\"input\":{\"req_info\":{\"rpt_id\":\"{rpt_id}\",\"rpt_type\":\"0\"},\"head\":{\"bizno\":\"S4021\",\"sysno\":\"zlhr\",\"tarno\":\"ZLHIS\",\"time\":\"{time}\",\"action_no\":\"{action_no}\"}}}";
                // 使用字符串插值替换占位符
                string data = jsonTemplate
                    .Replace("{rpt_id}", bbid)
                    .Replace("{time}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"))
                    .Replace("{action_no}", Guid.NewGuid().ToString());
               string responseString = Tools.WSDataToZlsoftInterface(standard_url, data);

                ZlsoftOutVO zlsoftOutVO =  JsonConvert.DeserializeObject<ZlsoftOutVO>(responseString);

                if (!"A".Equals(zlsoftOutVO.input.ack_info.exe_status))
                {
                    return zlsoftOutVO.input.ack_info.err_msg;
                }
                return zlsoftOutVO.input.file_info.rpt_content;
            }
            else if(lisVersion == 3)
            {
                // 三方lis
                string three_sql = @"select pdfUrl from three_lis_pdf where yzid ='" + bbid+"'";
                LogHelper.Info("three_sql  "+ three_sql);
                List<string> pdfs = SqlServerHelper.GetPdfUrlList(three_sql);
                if (pdfs != null && pdfs.Count()>0)
                {
                    GetPdfFromJpgList(pdfs, path);
                    return path;
                }
                return "三方lispdf报告获取失败";
            }
            else if (lisVersion == 10)
            {
                // 三方lis

                if (DownloadPdf2(reportNumber, path))
                {
                    return path;
                };
                return "标准服务lispdf报告获取失败";
            }
            return "失败";
        }


        public static void GetPdfFromJpg(string jpgUrl,string pdfUrl)
        {
            LogHelper.Info("开始从jpg转换pdf");
            //string jpgFilePath = "path_to_your_jpg.jpg";
            //string pdfFilePath = "output.pdf";

            using (FileStream fs = new FileStream(pdfUrl, FileMode.Create))
            {
                // 创建一个文档对象
                Document document = new Document();
                // 创建一个 PDF 写入器，将文档写入文件流
                PdfWriter writer = PdfWriter.GetInstance(document, fs);

                document.Open();

                // 创建一个图像对象并加载 JPG 文件
                Image image = Image.GetInstance(jpgUrl);
                // 设置图像在 PDF 中的尺寸（可以根据需要调整）
                image.ScaleToFit(document.PageSize.Width - 20, document.PageSize.Height - 20);

                // 将图像添加到 PDF 文档中
                document.Add(image);
                document.Close();
            }
            LogHelper.Info("JPG 转换为 PDF 成功！");
        }

        public static void GetPdfFromJpgList(List<string> jpgUrls, string pdfUrl)
        {
            LogHelper.Info("开始从jpg列表转换pdf");
            using (FileStream fs = new FileStream(pdfUrl, FileMode.Create))
            {
                // 创建一个文档对象
                Document document = new Document();
                // 创建一个 PDF 写入器，将文档写入文件流
                PdfWriter writer = PdfWriter.GetInstance(document, fs);
                document.Open();
                foreach (string jpgUrl in jpgUrls)
                {
                    try
                    {
                        LogHelper.Info("三方pdfUrl="+ jpgUrl);
                        // 创建一个图像对象并加载 JPG 文件
                        Image image = Image.GetInstance(jpgUrl);
                        // 设置图像在 PDF 中的尺寸（可以根据需要调整）
                        // 这里为了保持图片比例，我们先获取图片的原始尺寸
                        float imgWidth = image.ScaledWidth;
                        float imgHeight = image.ScaledHeight;

                        // 根据需要调整图片大小，这里以A4纸大小减去边距为例
                        float pdfWidth = document.PageSize.Width - 20;
                        float pdfHeight = document.PageSize.Height - 20;

                        // 根据宽度或高度调整图片大小，保持比例
                        float scaleFactor = Math.Min(pdfWidth / imgWidth, pdfHeight / imgHeight);
                        image.ScaleAbsolute(imgWidth * scaleFactor, imgHeight * scaleFactor);

                        // 将图像添加到 PDF 文档中
                        document.Add(image);
                        // 添加一个空行以分隔图片（可选）
                        document.Add(new Paragraph(string.Empty));
                        document.NewPage(); // 如果需要在每张图片后添加新页，则使用此行
                    }
                    catch (Exception ex)
                    {
                        LogHelper.Error(ex ,"无法加载图片"+jpgUrl);
                    }
                }
                document.Close();
            }
            LogHelper.Info("JPG 列表转换为 PDF 成功！");
        }


        public static string GeneratePdf(int lisVersion, string reportNumber, string bbid, string yzid)
        {
            string pdfUrl = getPdfParamByLisVersion(lisVersion, reportNumber, bbid, yzid);
            LogHelper.Info("GeneratePdf==" + pdfUrl);
            return pdfUrl;
        }


        private static bool AcceptAllCertificates(object sender, X509Certificate certificate, X509Chain chain,
            bool sslPolicyErrors)
        {
            return true;
        }

        public static bool DownloadPdf(string pdfUrl, string localFilePath)
        {
            // 忽略证书验证

            try
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(pdfUrl);
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                if (response.StatusCode == HttpStatusCode.OK)
                {
                    using (Stream responseStream = response.GetResponseStream())
                    {
                        using (FileStream fileStream = new FileStream(localFilePath, FileMode.Create))
                        {
                            byte[] buffer = new byte[1024*10];
                            int bytesRead;
                            while ((bytesRead = responseStream.Read(buffer, 0, buffer.Length)) > 0)
                            {
                                fileStream.Write(buffer, 0, bytesRead);
                            }
                        }
                    }
                    return true;
                }
                else
                {
                    LogHelper.Info($"下载失败，状态码: {response.StatusCode}");
                    return false;
                }
            }
            catch (Exception ex)
            {
                LogHelper.Info($"下载过程中出现错误: {ex.Message}");
                return false;
            }
        }



        public static bool DownloadPdf2(string pdfUrl, string localFilePath)
        {

            using (WebClient client = new WebClient())
            {
                try
                {
                    client.DownloadFile(pdfUrl, localFilePath);
                    LogHelper.Info("文件下载成功！");
                    return true;
                }
                catch (Exception ex)
                {
                    LogHelper.Info($"文件下载失败：{ex.Message}");
                    return false;
                }
            }
        }

        static object Instance = null;
        public static bool Init()
        {
            if (Instance != null )
            {
                return true;
            }
            
            var para = JsonConvert.SerializeObject(new UserLogin
            {
                UserName = ConfigurationManager.AppSettings["UserName"],
                PassWord = ConfigurationManager.AppSettings["PasWord"],
                Server = ConfigurationManager.AppSettings["Server"]
            });
            LogHelper.Info("初始化入参" + para);
            string strReval = string.Empty;
            try
            {
                Process.GetProcessesByName("zlgyReport").ToList().ForEach(x => x.Kill());
            }
            catch (Exception ex) {
                LogHelper.Info("进程结束异常" + ex.Message); }
            var type = Type.GetTypeFromProgID("zlgyReport.clsGyReport");
            Instance = Activator.CreateInstance(type);
            ParameterModifier modifier = new ParameterModifier(2);
            modifier[1] = true;
            var result = type.InvokeMember("Init", BindingFlags.Default | BindingFlags.InvokeMethod, null, Instance, new object[] { para, strReval },
                    new ParameterModifier[] { modifier },
                    null,
                    new string[] { "strJson", "strResult" });
            LogHelper.Info("出参:" + strReval);
            LogHelper.Info("返回：" + result.ToString());
            return (bool)result;
        }

        public static bool OutPdf(string para)
        {
            var type = Type.GetTypeFromProgID("zlgyReport.clsGyReport");
            ParameterModifier modifier = new ParameterModifier(2);
            modifier[1] = true;
            string strReval = string.Empty;
            var result = type.InvokeMember("ReportOpen", BindingFlags.Default | BindingFlags.InvokeMethod, null, Instance, new object[] { para, strReval },
                    new ParameterModifier[] { modifier },
                    null,
                    new string[] { "strJson", "strResult" });
            LogHelper.Info("出参:" + strReval);
            LogHelper.Info("返回：" + result.ToString());
            return (bool)result;
        }

        public class UserLogin
        {
            public string UserName { get; set; }
            public string PassWord { get; set; }
            public string Server { get; set; }
        }

    }
}