using DocumentFormat.OpenXml.Packaging;
using HtmlAgilityPack;
using Microsoft.AspNetCore.Http;
using OpenXmlPowerTools;
using System;
using System.Collections.Generic;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml.Linq;
using TEAMModelOS.Model.Core.Dtos;
using TEAMModelOS.Model.Core.Models;
using TEAMModelOS.Model.Evaluation.Dtos.Own;
using TEAMModelOS.Model.Evaluation.Models;
using TEAMModelOS.SDK.Context.Configuration;
using TEAMModelOS.SDK.Extension.DataResult.JsonRpcRequest;
using TEAMModelOS.SDK.Extension.SnowFlake;
using TEAMModelOS.SDK.Helper.Common.CollectionHelper;
using TEAMModelOS.SDK.Helper.Common.FileHelper;
using TEAMModelOS.SDK.Helper.Common.JsonHelper;
using TEAMModelOS.SDK.Helper.Common.StringHelper;
using TEAMModelOS.SDK.Helper.Network.HttpHelper;
using TEAMModelOS.SDK.Helper.Security.ShaHash;
using TEAMModelOS.SDK.Module.AzureBlob.Container;
using TEAMModelOS.SDK.Module.AzureBlob.Interfaces;
using TEAMModelOS.SDK.Module.AzureTable.Interfaces;
using TEAMModelOS.Service.Core.Implements;
using TEAMModelOS.Service.Evaluation.Interfaces;

namespace TEAMModelOS.Service.Evaluation.Implements
{
    public  class ImportExerciseService : BaseService, IImportExerciseService
    {

        public async Task<Dictionary<string, object>> UploadWord(IFormFile file)
        {

            Dictionary<string, object> resdict = new Dictionary<string, object>();
            string shaCode = ShaHashHelper.GetSHA1(file.OpenReadStream());
            long length = file.Length;
            Dictionary<string, object> dict = new Dictionary<string, object> { { "Sha1Code", shaCode } };
            List<AzureBlobModel> models = await FindListByDict<AzureBlobModel>(dict);
           
            if (models.IsNotEmpty())
            {
                resdict.Add("HtmlString", HttpHelper.HttpGet(models[0].BlobUrl));
                resdict.Add("Sha1Code", models[0].Sha1Code);
                return resdict;
            }
           
            string folder = BaseConfigModel.ContentRootPath + "/Upload/" + IdWorker.getInstance().NextId();
            System.IO.Directory.CreateDirectory(folder);
            var filePath = folder +"\\"+ file.FileName;
            using (var stream = new FileStream(filePath, FileMode.Create))
            {
                await file.CopyToAsync(stream);
            }
            var htmlInfo = ConvertDocxToHtml(filePath, folder);
            AzureBlobModel model = await azureBlobDBRepository.UploadPath(htmlInfo.blobPath);
            model.Sha1Code = shaCode;
            await Save<AzureBlobModel>(model);
            FileHelper.DeleteDirAndFiles(BaseConfigModel.ContentRootPath + "/Upload");
            resdict.Add("HtmlString", htmlInfo.htmlString);
            resdict.Add("Sha1Code", shaCode);
            return resdict;
        }

        public static dynamic ConvertDocxToHtml(string filePath ,string folder)
        {
            byte[] byteArray = File.ReadAllBytes(filePath);

            //byte[] bytes = new byte[stream.Length];
           
            using (MemoryStream memoryStream = new MemoryStream())
            {
                memoryStream.Write(byteArray, 0, byteArray.Length);
                using (WordprocessingDocument doc = WordprocessingDocument.Open(memoryStream, true))
                {
                    int imageCounter = 0;
                    WmlToHtmlConverterSettings settings = new WmlToHtmlConverterSettings()
                    {
                        PageTitle = "My Page Title",
                        AdditionalCss = "body { margin: 1cm auto; max-width: 20cm; padding: 0; }",

                        FabricateCssClasses = true,
                        CssClassPrefix = "pt-",
                        RestrictToSupportedLanguages = false,
                        RestrictToSupportedNumberingFormats = false,
                        ImageHandler = imageInfo =>
                        {
                            ++imageCounter;
                            string extension = imageInfo.ContentType.Split('/')[1].ToLower();
                            ImageFormat imageFormat = null;
                            if (extension == "png") imageFormat = ImageFormat.Png;
                            else if (extension == "gif") imageFormat = ImageFormat.Gif;
                            else if (extension == "bmp") imageFormat = ImageFormat.Bmp;
                            else if (extension == "jpeg") imageFormat = ImageFormat.Jpeg;
                            else if (extension == "tiff")
                            {
                                extension = "gif";
                                imageFormat = ImageFormat.Gif;
                            }
                            else if (extension == "x-wmf")
                            {
                                extension = "wmf";
                                imageFormat = ImageFormat.Wmf;
                            }

                            if (imageFormat == null) return null;

                            string base64 = null;
                            try
                            {
                                using (MemoryStream ms = new MemoryStream())
                                {
                                    imageInfo.Bitmap.Save(ms, imageFormat);
                                    var ba = ms.ToArray();
                                    base64 = System.Convert.ToBase64String(ba);
                                }
                            }
                            catch (System.Runtime.InteropServices.ExternalException)
                            { return null; }

                            ImageFormat format = imageInfo.Bitmap.RawFormat;
                            ImageCodecInfo codec = ImageCodecInfo.GetImageDecoders()
                                                        .First(c => c.FormatID == format.Guid);
                            string mimeType = codec.MimeType;

                            string imageSource =
                                    string.Format("data:{0};base64,{1}", mimeType, base64);

                            XElement img = new XElement(Xhtml.img,
                                    new XAttribute(NoNamespace.src, imageSource),
                                    imageInfo.ImgStyleAttribute,
                                    imageInfo.AltText != null ?
                                        new XAttribute(NoNamespace.alt, imageInfo.AltText) : null);
                            return img;
                        }
                    };
                    // XElement html = HtmlConverter.ConvertToHtml(doc, settings);
                    // File.WriteAllText(@"E:\document\kk.html", html.ToStringNewLineOnAttributes());
                    XElement htmlElement = WmlToHtmlConverter.ConvertToHtml(doc, settings);
                    var htmls = new XDocument(new XDocumentType("html", null, null, null), htmlElement);
                    var htmlString = htmls.ToString(SaveOptions.DisableFormatting);
                    //引入MathJax插件
                    htmlString = htmlString + "<script type=\"text/javascript\" src=\"http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML\"></script>";
                    File.WriteAllText(folder+"/"+"index.html", htmlString);
                    return new  { htmlString ,blobPath= folder + "/" + "index.html" };
                };
            }
        }


        private static string SummaryTag = "【题文】";
        private static string AnswerTag = "【答案】";
        private static string AnalysisTag = "【解析】";
        private static string EndedTag = "【结束】";
        private static string Options = "ABCDEFGHIJ";
        private static string CompleteStart = "【";
        private static string CompleteEnd = "】";
        Dictionary<string, string> TestType = new Dictionary<string, string> {
            { "Single", "单选题|多选题" }, { "Multiple", "多选题|判断题" },
            { "Judge", "判断题|填空题" }, { "Complete", "填空题|主观题" },
            { "Subjective", "主观题|【完结】" } };
        //private readonly IAzureTableDBRepository azureTableDBRepository;
        private readonly IHttpContextAccessor httpContextAccessor;
        private readonly IAzureBlobDBRepository azureBlobDBRepository;

        public ImportExerciseService(IHttpContextAccessor _httpContextAccessor , IAzureBlobDBRepository _azureBlobDBRepository)
        {
            azureBlobDBRepository = _azureBlobDBRepository;
            httpContextAccessor = _httpContextAccessor;
        }


        public async Task<List<ExerciseDto>> AnalyzeWordAsync(DocInfoDto dict, string Lang)
        {
            List<ContentVerify> contents = await this.FindListByKey<ContentVerify>("DigestCode", dict.ShaCode);
            string html;
            if (contents.IsNotEmpty())
            {
                html = contents[0].Content;
            }
            else
            {
                string Word2html = BaseConfigModel.Configuration["HaBookAuth:Word2html"];
                JosnRPCRequest<DocInfoDto> request = new JosnRPCRequest<DocInfoDto>();
                request.@params = dict;
                string jsondata = MessagePackHelper.ObjectToJson(request);
                html = await HttpHelper.HttpPostAsync(Word2html, jsondata);
                ContentVerify content = new ContentVerify { RowKey = dict.ShaCode, PartitionKey = Lang, AlgorithmType = "Sha1", Content = html, DigestCode = dict.ShaCode };
                await this.SaveOrUpdate<ContentVerify>(content);
            }

            //String url = "https://teammodelstorage.blob.core.chinacloudapi.cn/teammodelcontest/20190517/%E6%A8%A1%E6%9D%BF%E6%A0%B7%E4%BE%8B.doc";


            Dictionary<string, string> TestInType = new Dictionary<string, string>();
            html = html.Replace("\t", " ").Replace("<span>", "").Replace("</span>", "");
            //去除class
            string classpattern = "class=\"([^\"]*)\"";
            html = Regex.Replace(html, classpattern, "");
            string pattern = "<span([^>]{0,})>";
            html = Regex.Replace(html, pattern, "");
            foreach (string key in TestType.Keys)
            {
                string[] tags = TestType[key].Split("|");
                string RegexStr = tags[0] + "([\\s\\S]*?)" + tags[1];
                Match mt = Regex.Match(html, RegexStr);
                TestInType.Add(key, mt.Value);
            }

            List<ExerciseDto> tests = new List<ExerciseDto>();
            ///解析几种题型的题目
            foreach (string key in TestInType.Keys)
            {
                switch (key)
                {
                    case "Single":
                        List<ExerciseDto> exercisesSingle = SingleConvert(key, TestInType[key]);
                        tests.AddRange(exercisesSingle); break;
                    case "Multiple":
                        List<ExerciseDto> exercisesMultiple = MultipleConvert(key, TestInType[key]);
                        tests.AddRange(exercisesMultiple); break;
                    case "Judge":
                        List<ExerciseDto> exercisesJudge = JudgeConvert(key, TestInType[key]);
                        tests.AddRange(exercisesJudge); break;
                    case "Complete":
                        List<ExerciseDto> exercisesComplete = CompleteConvert(key, TestInType[key]);
                        tests.AddRange(exercisesComplete); break;
                    case "Subjective":
                        List<ExerciseDto> exercisesSubjective = SubjectiveConvert(key, TestInType[key]);
                        tests.AddRange(exercisesSubjective); break;
                    default: break;
                }
            }
            SaveExercise(tests, Lang);
            return tests;
        }


        public async void SaveExercise(List<ExerciseDto> exercises, string Lang)
        {
            string tmdid = "";
            List<string> ids = HttpContextHelper.GetLoginUser(httpContextAccessor, "id");
            if (ids.IsNotEmpty())
            {
                tmdid = ids[0];
            }
            List<ExerciseVerify> exerciseVerifies = new List<ExerciseVerify>();
            exercises.ForEach(x =>
            {
                ExerciseVerify exercise0 = new ExerciseVerify { TeamModelId = tmdid, RowKey = x.ShaCode, Type = 0, PartitionKey = Lang, Content = x.Question, SummaryCode = x.ShaCode, Status = 1 };
                exerciseVerifies.Add(exercise0);
                if (x.Option.IsNotEmpty())
                {
                    string opt = MessagePackHelper.ObjectToJson(x.Option);
                    ExerciseVerify exercise1 = new ExerciseVerify { TeamModelId = tmdid, RowKey = x.ShaCode + "-" + ShaHashHelper.GetSHA1(opt), Type = 1, PartitionKey = Lang, Content = opt, SummaryCode = x.ShaCode, Status = 1 };
                    exerciseVerifies.Add(exercise1);
                }
                if (x.Answer.IsNotEmpty())
                {
                    string ans = MessagePackHelper.ObjectToJson(x.Answer);
                    ExerciseVerify exercise2 = new ExerciseVerify { TeamModelId = tmdid, RowKey = x.ShaCode + "-" + ShaHashHelper.GetSHA1(ans), Type = 2, PartitionKey = Lang, Content = ans, SummaryCode = x.ShaCode, Status = 1 };
                    exerciseVerifies.Add(exercise2);
                }
                ExerciseVerify exercise3 = new ExerciseVerify { TeamModelId = tmdid, RowKey = x.ShaCode + "-" + ShaHashHelper.GetSHA1(x.Explain), Type = 3, PartitionKey = Lang, Content = x.Explain, SummaryCode = x.ShaCode, Status = 1 };
                exerciseVerifies.Add(exercise3);
            });
            await this.SaveOrUpdateAll(exerciseVerifies);
        }


        public static List<ExerciseDto> SingleConvert(string TypeKey, string testHtml)
        {
            List<ExerciseDto> testInfos = OptionProcess(TypeKey, testHtml);
            return testInfos;
        }
        public static List<ExerciseDto> MultipleConvert(string TypeKey, string testHtml)
        {
            List<ExerciseDto> testInfos = OptionProcess(TypeKey, testHtml);
            return testInfos;
        }
        public static List<ExerciseDto> JudgeConvert(string TypeKey, string testHtml)
        {
            List<ExerciseDto> testInfos = OptionProcess(TypeKey, testHtml);
            return testInfos;
        }
        public static List<ExerciseDto> CompleteConvert(string TypeKey, string testHtml)
        {
            List<ExerciseDto> testInfos = CompleteProcess(TypeKey, testHtml);
            return testInfos;
        }
        public static List<ExerciseDto> SubjectiveConvert(string TypeKey, string testHtml)
        {
            List<string> tests = ConvertTest(testHtml);
            List<ExerciseDto> testInfos = ConvertTestInfo(tests, TypeKey);

            foreach (ExerciseDto testInfo in testInfos)
            {
                testInfo.Question = testInfo.Question.Replace(AnalysisTag, "").Replace(SummaryTag, "").Replace(AnswerTag, "");
                testInfo.Question = HtmlHelper.DoUselessTag(testInfo.Question);
                StringBuilder textImg = new StringBuilder(HtmlHelper.DoTextImg(testInfo.Question));
                testInfo.ShaCode = ShaHashHelper.GetSHA1(textImg.ToString());
                for (int i = 0; i < testInfo.Answer.Count; i++)
                {
                    testInfo.Answer[i] = testInfo.Answer[i].Replace(AnswerTag, "").Replace(AnalysisTag, "");
                    testInfo.Answer[i] = HtmlHelper.DoUselessTag(testInfo.Answer[i]);
                }
                testInfo.Explain = testInfo.Explain.Replace(AnalysisTag, "").Replace(EndedTag, "");
                testInfo.Explain = HtmlHelper.DoUselessTag(testInfo.Explain);
            }
            return testInfos;
        }


        public static List<ExerciseDto> CompleteProcess(string TypeKey, string testHtml)
        {
            List<string> tests = ConvertTest(testHtml);
            List<ExerciseDto> testInfos = ConvertTestInfo(tests, TypeKey);
            HtmlDocument doc = new HtmlDocument();
            foreach (ExerciseDto testInfo in testInfos)
            {
                List<string> ans = new List<string>();
                testInfo.Question = testInfo.Question.Replace(AnalysisTag, "").Replace(SummaryTag, "").Replace(AnswerTag, "");
                string regRex = CompleteStart + "([\\s\\S]*?)" + CompleteEnd;
                List<ReplaceDto> replaces = new List<ReplaceDto>();
                var m = Regex.Match(testInfo.Question, regRex);
                int index = 1;
                while (m.Success)
                {
                    string an = m.Groups[1].ToString();
                    doc.LoadHtml(an);
                    string anstr = doc.DocumentNode.InnerText;
                    string nbsp = "";
                    int length = System.Text.Encoding.Default.GetBytes(anstr).Length;
                    for (int i = 0; i < length * 3; i++)
                    {
                        nbsp += "&nbsp;";
                    }
                    ReplaceDto replaceDto = new ReplaceDto { oldstr = "【" + an + "】", newstr = "<underline data=\"" + index + "\"><u>" + nbsp + "</u></underline>" };
                    replaces.Add(replaceDto);
                    ans.Add(an);
                    m = m.NextMatch();
                    index++;
                }
                string textImg = testInfo.Question;
                //消除答案
                foreach (ReplaceDto replace in replaces)
                {
                    testInfo.Question = testInfo.Question.Replace(replace.oldstr, replace.newstr);
                    testInfo.Question = HtmlHelper.DoUselessTag(testInfo.Question);
                    //只要题干文字和图片 
                    //不加underline标记
                    textImg = testInfo.Question.Replace(replace.oldstr, "");

                }
                textImg = HtmlHelper.DoTextImg(textImg);
                testInfo.ShaCode = ShaHashHelper.GetSHA1(textImg);
                //处理解析
                testInfo.Explain = testInfo.Explain.Replace(AnalysisTag, "").Replace(EndedTag, "");
                testInfo.Explain = HtmlHelper.DoUselessTag(testInfo.Explain);
                testInfo.Answer.AddRange(ans);
            }
            return testInfos;
        }

        /// <summary>
        /// 选择题处理
        /// </summary>
        /// <param name="TypeKey"></param>
        /// <param name="testHtml"></param>
        /// <returns></returns>
        public static List<ExerciseDto> OptionProcess(string TypeKey, string testHtml)
        {
            //处理 \t
            List<string> tests = ConvertTest(testHtml);
            string[] optionsKeys = Options.Select(s => s.ToString()).ToArray();
            List<ExerciseDto> testInfos = ConvertTestInfo(tests, TypeKey);
            foreach (ExerciseDto testInfo in testInfos)
            {
                string optsRgex = optionsKeys[0] + "(\\．|\\.|\\、|\\:|\\：)([\\s\\S]*?)" + AnswerTag;
                string optsHtml = Regex.Match(testInfo.Question, optsRgex).Value;
                //HtmlDocument doc = new HtmlDocument();
                //doc.LoadHtml(optsHtml);
                //optsHtml = doc.DocumentNode.InnerText;
                //处理选项
                StringBuilder textImg = new StringBuilder();
                for (int i = 0; i < optionsKeys.Length - 1; i++)
                {
                    string optRgex = optionsKeys[i] + "(\\．|\\.|\\、|\\:|\\：)([\\s\\S]*?)" + optionsKeys[i + 1] + "(\\．|\\.|\\、|\\:|\\：)";
                    string optHtml = Regex.Match(optsHtml, optRgex).Value;
                    if (!string.IsNullOrEmpty(optHtml))
                    {
                        optHtml = optHtml.Substring(2, optHtml.Length - 4);
                        optHtml = HtmlHelper.DoUselessTag(optHtml);
                        textImg.Append(HtmlHelper.DoTextImg(optHtml));
                        testInfo.Option.Add(new CodeValue { Code = optionsKeys[i], Value = optHtml });
                        //testInfo.Option.Add(new Dictionary<string, string> { { "code", optionsKeys[i] },{ "value", optHtml } });
                        //testInfo.Option.TryAdd(optionsKeys[i], optHtml);
                    }
                    else
                    {
                        optRgex = optionsKeys[i] + "(\\．|\\.|\\、|\\:|\\：)([\\s\\S]*?)" + AnswerTag;
                        optHtml = Regex.Match(optsHtml, optRgex).Value;
                        if (!string.IsNullOrEmpty(optHtml))
                        {
                            optHtml = optHtml.Substring(2, optHtml.Length - 6);
                            optHtml = HtmlHelper.DoUselessTag(optHtml);
                            textImg.Append(HtmlHelper.DoTextImg(optHtml));
                            testInfo.Option.Add(new CodeValue { Code = optionsKeys[i], Value = optHtml });
                            //testInfo.Option.Add(new Dictionary<string, string> { { "code", optionsKeys[i] }, { "value", optHtml } });
                            //testInfo.Option.TryAdd(optionsKeys[i], optHtml);
                        }
                    }
                }
                //处理题干
                testInfo.Question = testInfo.Question.Replace(optsHtml, "").Replace(SummaryTag, "").Replace(AnswerTag, "");
                testInfo.Question = HtmlHelper.DoUselessTag(testInfo.Question);
                textImg.Append(HtmlHelper.DoTextImg(testInfo.Question));
                testInfo.ShaCode = ShaHashHelper.GetSHA1(textImg.ToString());
                List<string> answers = testInfo.Answer;
                HashSet<string> ans = new HashSet<string>();
                //处理答案
                for (int i = 0; i < answers.Count; i++)
                {
                    string Answer = answers[i].Replace(AnswerTag, "").Replace(AnalysisTag, "").TrimStart().TrimEnd();
                    Answer.Select(s => s.ToString()).ToList().ForEach(x =>
                    {
                        ans.Add(x);
                    });
                }
                testInfo.Answer = ans.ToList();
                //处理解析
                testInfo.Explain = testInfo.Explain.Replace(AnalysisTag, "").Replace(EndedTag, "");
                testInfo.Explain = HtmlHelper.DoUselessTag(testInfo.Explain);
            }
            return testInfos;
        }



        public static List<ExerciseDto> ConvertTestInfo(List<string> tests, string TypeKey)
        {
            List<ExerciseDto> testInfos = new List<ExerciseDto>();
            foreach (string html in tests)
            {
                Dictionary<string, string> regex = new Dictionary<string, string>();
                Dictionary<string, string> question = new Dictionary<string, string> { { "Summary", SummaryTag + "|" + AnswerTag }, { "Answer", AnswerTag + "|" + AnalysisTag }, { "Analysis", AnalysisTag + "|" + EndedTag } };
                Dictionary<string, string> compquestion = new Dictionary<string, string> { { "Summary", SummaryTag + "|" + AnalysisTag }, { "Analysis", AnalysisTag + "|" + EndedTag } };
                ExerciseDto test = new ExerciseDto();
                test.Type = TypeKey;
                List<string> keys = new List<string>();
                if (TypeKey.Equals("Complete"))
                {
                    keys = compquestion.Keys.ToList();
                    regex = compquestion;
                }
                else
                {
                    keys = question.Keys.ToList();
                    regex = question;
                }
                foreach (string key in keys)
                {
                    string[] tags = regex[key].Split("|");
                    string RegexStr = tags[0] + "([\\s\\S]*?)" + tags[1];
                    Match mt = Regex.Match(html, RegexStr);
                    switch (key)
                    {
                        case "Summary":
                            test.Question = mt.Value; break;
                        case "Answer":
                            string Answer = mt.Value;
                            ///单选或多选,判断答案 脱html标签
                            if (TypeKey.Equals("Single") || TypeKey.Equals("Multiple") || TypeKey.Equals("Judge"))
                            {
                                HtmlDocument doc = new HtmlDocument();
                                doc.LoadHtml(mt.Value);
                                Answer = doc.DocumentNode.InnerText;
                            }
                            test.Answer = new List<string>() { Answer }; break;
                        case "Analysis":
                            test.Explain = mt.Value; break;
                        default: break;
                    }
                }
                testInfos.Add(test);
            }
            return testInfos;
        }
        public static List<string> ConvertTest(string testHtml)
        {
            string start = SummaryTag;
            string end = EndedTag;
            List<string> tests = new List<string>();
            while (testHtml.IndexOf(start) > 0)
            {
                int indexStart = testHtml.IndexOf(start);
                int indexEnd = testHtml.IndexOf(end);
                string test = testHtml.Substring(indexStart, indexEnd - indexStart + start.Length);
                tests.Add(test);
                testHtml = testHtml.Substring(indexEnd + end.Length);
            }
            return tests;
        }
    }
    class ReplaceDto
    {
        public string oldstr { get; set; }
        public string newstr { get; set; }
    }
}