using DocumentFormat.OpenXml.Packaging;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using PdfSharpCore.Pdf;
using PdfSharpCore.Pdf.IO;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Linq;
using TEAMModelOS.SDK.Context.Configuration;
using TEAMModelOS.SDK.Context.Constant;
using TEAMModelOS.SDK.Context.Constant.Common;
using TEAMModelOS.SDK.Context.Exception;
using TEAMModelOS.SDK.Extension.DataResult.JsonRpcRequest;
using TEAMModelOS.SDK.Extension.DataResult.JsonRpcResponse;
using TEAMModelOS.SDK.Helper.Common.StringHelper;
using TEAMModelOS.SDK.Helper.Security.ShaHash;
using TEAMModelOS.SDK.Module.AzureBlob.Container;

namespace HiTeachCE.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class FileController
    {
        static XmlNamespaceManager xmlnsManager;

        static FileController()
        {

            xmlnsManager = new XmlNamespaceManager(new NameTable());
            xmlnsManager.AddNamespace("p", "http://schemas.openxmlformats.org/presentationml/2006/main");
            xmlnsManager.AddNamespace("a", "http://schemas.openxmlformats.org/drawingml/2006/main");
            xmlnsManager.AddNamespace("xsl", "http://www.w3.org/1999/XSL/Transform");
            xmlnsManager.AddNamespace("fo", "http://www.w3.org/1999/XSL/Format");
            xmlnsManager.AddNamespace("app", "http://schemas.openxmlformats.org/officeDocument/2006/extended-properties");
            xmlnsManager.AddNamespace("cp", "http://schemas.openxmlformats.org/package/2006/metadata/core-properties");
            xmlnsManager.AddNamespace("dc", "http://purl.org/dc/elements/1.1/");
            xmlnsManager.AddNamespace("dcterms", "http://purl.org/dc/terms/");
            xmlnsManager.AddNamespace("dcmitype", "http://purl.org/dc/dcmitype/");
            xmlnsManager.AddNamespace("rel", "http://schemas.openxmlformats.org/package/2006/relationships");
            xmlnsManager.AddNamespace("r", "http://schemas.openxmlformats.org/officeDocument/2006/relationships");
            xmlnsManager.AddNamespace("cus", "http://schemas.openxmlformats.org/officeDocument/2006/custom-properties");
            xmlnsManager.AddNamespace("vt", "http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes");
            xmlnsManager.AddNamespace("pic", "http://schemas.openxmlformats.org/drawingml/2006/picture");
            xmlnsManager.AddNamespace("dsp", "http://schemas.microsoft.com/office/drawing/2008/diagram");
            xmlnsManager.AddNamespace("dgm", "http://schemas.openxmlformats.org/drawingml/2006/diagram");
            xmlnsManager.AddNamespace("a14", "http://schemas.microsoft.com/office/drawing/2010/main");
            xmlnsManager.AddNamespace("m", "http://schemas.openxmlformats.org/officeDocument/2006/math");
            xmlnsManager.AddNamespace("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006");
            xmlnsManager.AddNamespace("p14", "http://schemas.microsoft.com/office/powerpoint/2010/main");
            xmlnsManager.AddNamespace("pkg", "http://schemas.microsoft.com/office/2006/xmlPackage");
            xmlnsManager.AddNamespace("p15", "http://schemas.microsoft.com/office/powerpoint/2012/main");
            xmlnsManager.AddNamespace("a16", "http://schemas.microsoft.com/office/drawing/2014/main");
            xmlnsManager.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
            xmlnsManager.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart");
            xmlnsManager.AddNamespace("c14", "http://schemas.microsoft.com/office/drawing/2007/8/2/chart");
            xmlnsManager.AddNamespace("c16", "http://schemas.microsoft.com/office/drawing/2014/chart");
            xmlnsManager.AddNamespace("cs", "http://schemas.microsoft.com/office/drawing/2012/chartStyle");
            xmlnsManager.AddNamespace("thm15", "http://schemas.microsoft.com/office/thememl/2012/main");
            xmlnsManager.AddNamespace("fn", "http://www.w3.org/2005/xpath-functions");
        }

         

        /// <summary>
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        [HttpPost("upload")]
        [RequestSizeLimit(102_400_000_00)] //最大10000m左右
        public async Task<BaseJosnRPCResponse> upload([FromForm] IFormFile file)
        {
            //if (!IsImage(file.OpenReadStream())) {
            //    throw new BizException("请上传图片类型的文件！", 2);
            //}
             
            JsonRPCResponseBuilder responseBuilder = new JsonRPCResponseBuilder();
            string filname = ShaHashHelper.GetSHA1(file.OpenReadStream());
            string extension = System.IO.Path.GetExtension(file.FileName).ToLower();
            // Dictionary<string, object> model = await fileService.UploadDocument(file);
            string path = BaseConfigModel.ContentRootPath + "/Avatar/" + filname + extension;
            if (System.IO.File.Exists(path) == false)
            {
                using (var stream = new FileStream(path, FileMode.Create))
                {
                    await file.CopyToAsync(stream);
                }
            }
            var url = "https://cdhabook.teammodel.cn/avatar/" + filname + extension;
            return responseBuilder.Data(url).build();
           
        }
        [HttpPost("uploadBase64")]
        public async Task<BaseJosnRPCResponse> BlobSaveBase64(JosnRPCRequest<string> files)
        {
            string filname = ShaHashHelper.GetSHA1(files.@params);
            JsonRPCResponseBuilder responseBuilder = new JsonRPCResponseBuilder();
            string[] strs = files.@params.Split(',');
            string fileExt = StringHelper.SubMidString(strs[0], ":", ";");
            if (ContentTypeDict.extdict.TryGetValue(fileExt, out string ext))
            {
                fileExt = ext;
            }
            else
            {
                //解决多种扩展名不能获取的
                string[] sp = StringHelper.SubMidString(strs[0], "/", ";").Split("-");
                fileExt = sp[sp.Length - 1];
                sp = fileExt.Split("+");
                fileExt = "." + sp[sp.Length - 1];
            }
            string path = BaseConfigModel.ContentRootPath + "/Avatar/" + filname + fileExt;
            if (System.IO.File.Exists(path) == false)
            {
                FileStream fs = new FileStream(path, FileMode.Create);
                BinaryWriter bw = new BinaryWriter(fs);
                bw.Write(Convert.FromBase64String(strs[1]));
                bw.Close();
                fs.Close();
            }
            var url = "https://cdhabook.teammodel.cn/avatar/" + filname + fileExt;
            return responseBuilder.Data(url).build();
        }

        /// <summary>
        /// docUrl
        /// folder
        /// shaCode
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        [HttpPost("uploadDocument")]
        [RequestSizeLimit(102_400_000_00)] //最大10000m左右
        public async Task<BaseJosnRPCResponse> UploadDocument([FromForm] IFormFile file)
        {
           
            Dictionary<string, object> resdict = new Dictionary<string, object>();
            string contentRootPath = BaseConfigModel.ContentRootPath;
            JsonRPCResponseBuilder responseBuilder = new JsonRPCResponseBuilder();
            XmlDocument xmlDocument = new XmlDocument();
            string path = contentRootPath + "/OfficeFile/";
            string filname = ShaHashHelper.GetSHA1(file.OpenReadStream());
            string extension = System.IO.Path.GetExtension(file.FileName).ToLower();
            if (extension.Equals(".ppt") || extension.Equals(".doc") || extension.Equals(".pptx") || extension.Equals(".docx"))
            {
                if (System.IO.File.Exists(path + filname + ".pdf") == false)
                {
                    //Console.WriteLine(filname + " Not Exists!");
                    //if (extension.Equals(".ppt") || extension.Equals(".doc") || extension.Equals(".pptx") || extension.Equals(".docx"))
                    //{

                    //}
                    //else
                    //{
                    //    throw new BizException("file type does not support!", 500);
                    //}
                    if (extension.Equals(".pptx"))
                    {
                        using (PresentationDocument presentationDocument = PresentationDocument.Open(file.OpenReadStream(), false))
                        {
                            if (presentationDocument == null)
                            {
                                throw new ArgumentNullException("presentationDocument");
                            }

                            XDocument xdoc = presentationDocument.ToFlatOpcDocument();

                            xmlDocument.LoadXml(xdoc.ToString());

                            XmlNodeList xmlNodeList = xmlDocument.SelectNodes(@"//mc:Fallback", xmlnsManager);
                            foreach (XmlNode nodeChild in xmlNodeList)
                            {
                                nodeChild.ParentNode.RemoveChild(nodeChild);
                            }
                            XmlNodeList xmlNodeListMp4 = xmlDocument.SelectNodes(@"//pkg:part[@pkg:contentType='video/mp4']", xmlnsManager);
                            XmlDocument document = new XmlDocument();
                            foreach (XmlNode nodeChild in xmlNodeListMp4)
                            {
                                throw new BizException("Please delete the video!/请删除视频再重新上传！", 1001);
                            }
                            XmlNodeList xmlNodeListMp3 = xmlDocument.SelectNodes(@"//pkg:part[@pkg:contentType='audio/mpeg']", xmlnsManager);
                            foreach (XmlNode nodeChild in xmlNodeListMp3)
                            {
                                throw new BizException("Please delete the audio!/请删除音频再重新上传！", 1001);
                            }
                            var node = xmlDocument.Clone().OuterXml;
                            XDocument xdocs = XDocument.Parse(node);
                            presentationDocument.Dispose();
                            using (PresentationDocument presentationDocumen1t = PresentationDocument.FromFlatOpcDocument(xdocs))
                            {
                                presentationDocumen1t.SaveAs(path + filname + ".pptx");
                                presentationDocumen1t.Dispose();
                            }
                        }
                        OnWork(path + filname + ".pptx");
                    }
                    else
                    {
                        Stream sourceStream = file.OpenReadStream();
                        OnWork(sourceStream, path + filname + extension);
                    }
                }
                //else { Console.WriteLine(filname + " Exists!"); }
            }
            else if (extension.Equals(".pdf"))
            {
                if (System.IO.File.Exists(path + filname + ".pdf") == false)
                {
                    //// pdf
                    string pathpdf = path + filname + ".pdf";
                    using (var stream = new FileStream(pathpdf, FileMode.Create))
                    {
                        await file.CopyToAsync(stream);
                    }
                    /////
                }
            }
            else {
                throw new BizException("不支持的文件类型！",2);
            }
            PdfDocument inputDocument = PdfSharpCore.Pdf.IO.PdfReader.Open(path + filname + ".pdf", PdfDocumentOpenMode.Import);
            int count = inputDocument.PageCount;
            int limit = BaseConfigModel.Configuration.GetSection("PDFLimit").Get<int>();
            if (count > limit)
            {
                throw new BizException("PDF file cannot exceed " + limit + " pages!", 500);
            }
            //await ProcessPDF(file, resdict);
            resdict.Add("page", count);
            resdict.Add("type", "pdf");
            resdict.Add("model", new AzureBlobModel()
            {
                Folder = "OfficeFile",
                Sha1Code = filname,
                BlobUrl = "http://cdhabook.teammodel.cn/pdf/" + filname + ".pdf",
                ContentType = "application/pdf",
                ContentDisposition = "form-data; name=\"file\"; filename=\"" + filname + ".pdf\"",
                Length = inputDocument.FileSize,
                Name = "file",
                FileName = filname + ".pdf",
                RealName = "OfficeFile/" + filname + ".pdf",
                UploadTime = DateTime.Now.ToUniversalTime().Ticks - 621355968000000000,
                Extension = "pdf"
            });
            return responseBuilder.Data(resdict).build();
        }

        private bool SaveToFile(Stream stream, string path)
        {
            try
            {
                byte[] sourceBuffer = new Byte[stream.Length];
                stream.Read(sourceBuffer, 0, sourceBuffer.Length);
                stream.Seek(0, SeekOrigin.Begin);

                using (FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write))
                {
                    fs.Write(sourceBuffer, 0, sourceBuffer.Length);
                    fs.Close();
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("读取PPT源文件到本地失败：" + ex.Message);
                return false;
            }
            return true;
        }
        public bool OnWork(Stream stream, string path)
        {

            string sourcePath = string.Empty;
            string destPath = string.Empty;
            try
            {
                //if (FileInfo == null)
                //    return false;
                // Stream sourceStream = FileInfo.OpenReadStream();
                //   string filename = FileInfo.FileName;
                //  string extension = System.IO.Path.GetExtension(FileInfo.FileName);
                // sourcePath = System.IO.Path.Combine(Directory.GetCurrentDirectory(), filename + extension);
                //destPath = System.IO.Path.Combine(Directory.GetCurrentDirectory(), string.Format("{0}.pdf", filename));

                if (!SaveToFile(stream, path))
                {
                    return false;
                }
                var psi = new ProcessStartInfo("libreoffice", string.Format(" --headless --invisible --convert-to pdf {0} --outdir /www/apps/HiTeachCE/OfficeFile/", path)) { RedirectStandardOutput = true };
                Console.WriteLine(path);
                //  psi = new ProcessStartInfo("pptx2pdf ", "/www/apps/pptx2pdf/OfficeFile/5e4df6b8-6fbf-4de0-9c94-8de4b5604e45.pptx") { RedirectStandardOutput = true };
                // 启动
                var proc = Process.Start(psi);
                if (proc == null)
                {
                    Console.WriteLine("不能执行.");
                    return false;
                }
                else
                {
                    Console.WriteLine("-------------开始执行--------------");
                    //开始读取
                    using (var sr = proc.StandardOutput)
                    {
                        while (!sr.EndOfStream)
                        {
                            Console.WriteLine(sr.ReadLine());
                        }
                        if (!proc.HasExited)
                        {
                            proc.Kill();
                        }
                    }
                    Console.WriteLine("---------------执行完成------------------");
                    Console.WriteLine($"退出代码 ： {proc.ExitCode}");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return false;
            }
            finally
            {
                //if (System.IO. File.Exists(destPath))
                //{
                //    var destFileInfo = UploadFile(destPath, string.Format("{0}.pdf", Path.GetFileNameWithoutExtension( FileInfo.FileName)));
                //}
                //if (System.IO.File.Exists(destPath))
                //{
                //    System.IO.File.Delete(destPath);
                //}
            }
            return true;
        }
        public bool OnWork(string path)
        {

            //     string sourcePath = string.Empty;
            //  string destPath = string.Empty;
            try
            {
                //if (FileInfo == null)
                //    return false;
                // Stream sourceStream = FileInfo.OpenReadStream();
                //   string filename = FileInfo.FileName;
                //  string extension = System.IO.Path.GetExtension(FileInfo.FileName);
                // sourcePath = System.IO.Path.Combine(Directory.GetCurrentDirectory(), filename + extension);
                //destPath = System.IO.Path.Combine(Directory.GetCurrentDirectory(), string.Format("{0}.pdf", filename));

                //if (!SaveToFile(sourceStream, sourcePath))
                //    return false;
                var psi = new ProcessStartInfo("libreoffice", string.Format(" --headless --invisible --convert-to pdf {0} --outdir /www/apps/HiTeachCE/OfficeFile/", path)) { RedirectStandardOutput = true };
                Console.WriteLine(path);
                //  psi = new ProcessStartInfo("pptx2pdf ", "/www/apps/pptx2pdf/OfficeFile/5e4df6b8-6fbf-4de0-9c94-8de4b5604e45.pptx") { RedirectStandardOutput = true };
                // 启动
                var proc = Process.Start(psi);
                if (proc == null)
                {
                    Console.WriteLine("不能执行.");
                    return false;
                }
                else
                {
                    Console.WriteLine("-------------开始执行--------------");
                    //开始读取
                    using (var sr = proc.StandardOutput)
                    {
                        while (!sr.EndOfStream)
                        {
                            Console.WriteLine(sr.ReadLine());
                        }
                        if (!proc.HasExited)
                        {
                            proc.Kill();
                        }
                    }
                    Console.WriteLine("---------------执行完成------------------");
                    Console.WriteLine($"退出代码 ： {proc.ExitCode}");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return false;
            }
            finally
            {
                //if (System.IO. File.Exists(destPath))
                //{
                //    var destFileInfo = UploadFile(destPath, string.Format("{0}.pdf", Path.GetFileNameWithoutExtension( FileInfo.FileName)));
                //}
                //if (System.IO.File.Exists(destPath))
                //{
                //    System.IO.File.Delete(destPath);
                //}
            }
            return true;
        }
    }
}