using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.EntityFrameworkCore;
using WZExport.Data;
using WZExport.Models;
using System.IO;
using System.IO.Compression;
using System.Xml;
using System.Text;
using WZExport.Utilitys;

namespace WZExport.Pages.Wzs
{
    public class ExportModel : PageModel
    {
        private readonly WZContext _context;

        public ExportModel(WZContext context)
        {
            _context = context;
        }
        public IActionResult OnGet()
        {
            return Page();
        }

        [BindProperty]
        public string Type { get; set; }
        public readonly string _type1 = "导出文章";
        public readonly string _type2 = "导出元数据文章";
        static readonly string[] _image = { "jpg", "gif", "png", "bmp","jpeg" };
        static readonly string[] _flash = { "swf","avi","flash","mp4" };
        static readonly string[] _attach = { "ceb","doc","xls","rar","docx","pdf","zip","txt","xlsx","ppt","htm","cebx","pptx","dot" };

        public async Task<IActionResult> OnPostAsync()
        {
            string basePath = $"/temp/{nameof(Ptwd)}/{Type}/";
            string floderPath = $"{basePath}{DateTime.Now:yyyyMMdd}";
            if (Directory.Exists(floderPath) is false)
            {
                Directory.CreateDirectory(floderPath);
                if(Type==_type1) await CreateDefault(floderPath);
                else if (Type == _type2) await CreateYSJ(floderPath);
                DeleteEmptyFloder(floderPath);
                Replace(floderPath);
            }
            string zipfileName = $"{Type}-{DateTime.Now:yyyyMMddHHmmss}.zip";
            string zipFilePath = $"{basePath}{zipfileName}";           
            ZipFile.CreateFromDirectory(floderPath, zipFilePath);

            return File(System.IO.File.OpenRead(zipFilePath), "application/x-zip-compressed", zipfileName);
        }

        public async Task CreateDefault(string path)
        {
            string joinStr = "SELECT lm.Channelid,wz.DocID, " +
                                   " fj.Srcfile,fj.Fileext " +
                                   " from lm inner JOIN ptwd as wz ON lm.CHANNELID=wz.DOCCHANNEL LEFT JOIN fj on wz.DOCID=fj.APPDOCID";
            string wzStr = "SELECT Doctitle, Subdoctitle,Docauthor,Docsourcename,Doceditor," +
                                 " Dockeywords,Docabstract,Dochtmlcon,Crtime,Docpubtime " +
                                 " from  ptwd where DOCID={0} ";
            using var context = DatabaseService.Current.GetDbContext();
            var wzData = await context.SqlQueryAsync<Join>(joinStr);
            foreach (var wz in wzData)
            {
                var wzNew = context.SqlQuery<Join>(string.Format(wzStr, wz.DocID)).First();
                wz.Covert(wzNew);
            }
            CreateXml(path,wzData);
        }
        /// <summary>
        /// 元数据
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public async Task CreateYSJ(string path)
        {
            string joinStr = "SELECT lm.Channelid,wz.WCMMetaTablegovInfoID as DocID, " +
                                   " fj.Srcfile,fj.Fileext " +
                                   " from lm inner JOIN stqy as wz ON lm.CHANNELID=wz.ChannelId LEFT JOIN fj on wz.WCMMetaTablegovInfoID=fj.APPENDIXID";
            string wzStr = "SELECT Doctitle, title2 as Subdoctitle,CrUser as Docauthor,docsourcename as Docsourcename,CrUser as Doceditor," +
                                 " Dockeywords,CONTENT_GS as Docabstract,dochtmlcon as Dochtmlcon,Crtime,DATE_SC as Docpubtime,fbjg " +
                                 " from  stqy where WCMMetaTablegovInfoID={0} ";
            using var context = DatabaseService.Current.GetDbContext();
            var wzData = await context.SqlQueryAsync<Join>(joinStr);            
            foreach (var wz in wzData)
            {
                var wzNew = context.SqlQuery<Join>(string.Format(wzStr, wz.DocID)).First();
                wz.Covert(wzNew);
            }
            var dics = await context.Query<Dictionary>().ToListAsync();
            var pzDics = dics.Where(dic => dic.Type == 1);
            var jdDics = dics.Where(dic => dic.Type == 2);
            Action<int,Join,XmlDocument,XmlElement> action = (channelid, wz,doc,article) =>
            {
                var b_xxgk = doc.CreateElement("b_xxgk");
                b_xxgk.InnerText = UseTemp("1");
                var vc_number = doc.CreateElement("vc_number");
                vc_number.InnerText = UseTemp(pzDics.FirstOrDefault(dic=>dic.Key== channelid)?.Value??"");
                var vc_openmodel = doc.CreateElement("vc_openmodel");
                vc_openmodel.InnerText = UseTemp("主动公开");
                var vc_filenumber = doc.CreateElement("vc_filenumber");
                vc_filenumber.InnerText = UseTemp();
                var c_complatedate = doc.CreateElement("c_complatedate");
                c_complatedate.InnerText = UseTemp(wz.Docpubtime?.ToString("yyyy-MM-dd HH:mm:ss"));
                var vc_opentimelimit = doc.CreateElement("vc_opentimelimit");
                vc_opentimelimit.InnerText = UseTemp("长期公开"); 
                var vc_auditprogram = doc.CreateElement("vc_auditprogram");
                vc_auditprogram.InnerText = UseTemp("单位审核公开");
                var vc_ztflid = doc.CreateElement("vc_ztflid");
                vc_ztflid.InnerText = UseTemp();
                var vc_ztflname = doc.CreateElement("vc_ztflname");
                vc_ztflname.InnerText = UseTemp();
                var vc_serviceid = doc.CreateElement("vc_serviceid");
                vc_serviceid.InnerText = UseTemp();
                var vc_servicename = doc.CreateElement("vc_servicename");
                vc_servicename.InnerText = UseTemp();
                var vc_fbjg = doc.CreateElement("vc_fbjg");
                vc_fbjg.InnerText = UseTemp(wz.fbjg??"");
                var vc_service = doc.CreateElement("vc_service");
                vc_service.InnerText = UseTemp();
                var vc_area = doc.CreateElement("vc_area");
                vc_area.InnerText = UseTemp(jdDics.FirstOrDefault(dic => dic.Key == channelid)?.Value ?? "");
                var validend = doc.CreateElement("validend");
                validend.InnerText = UseTemp();
                article.AppendChild(b_xxgk);
                article.AppendChild(vc_number);
                article.AppendChild(vc_openmodel);
                article.AppendChild(vc_filenumber);
                article.AppendChild(c_complatedate);
                article.AppendChild(vc_opentimelimit);
                article.AppendChild(vc_auditprogram);
                article.AppendChild(vc_ztflid);
                article.AppendChild(vc_ztflname);
                article.AppendChild(vc_serviceid);
                article.AppendChild(vc_servicename);
                article.AppendChild(vc_fbjg);
                article.AppendChild(vc_service);
                article.AppendChild(vc_area);
                article.AppendChild(validend);
            };
            CreateXml(path, wzData, action);
            string UseTemp(string info = "")
            {
                return $"<![CDATA[{info}]]>";
            }
        }

        private void CreateXml(string path,List<Join> wzData,Action<int,Join,XmlDocument,XmlElement> action=null)
        {
            var wzGroupData = wzData.GroupBy(data => data.Channelid).Select(gpData => new { Channelid = gpData.Key, wzs = gpData.AsEnumerable() });
            var lms = _context.Lm.AsEnumerable();
            var parentLms = lms.Where(lm => lm.Parentid == 0).OrderByDescending(lm => lm.Chnlorder);
            foreach (var parentLm in parentLms)
            {
                FindSon(parentLm, path);
            }
            void FindSon(Lm parentLm, string lmPath)
            {
                var sonLms = lms.Where(lm => lm.Parentid == parentLm.Channelid).OrderByDescending(lm => lm.Chnlorder);
                var currentFilePath = $"{lmPath}/{parentLm.Chnldesc}";
                WriteWZXml(parentLm, currentFilePath);
                if (sonLms.Count() > 0)
                {
                    // parentLm.Childrens = sonLms;
                    if (Directory.Exists(currentFilePath) is false) Directory.CreateDirectory(currentFilePath);
                    foreach (var sonLm in sonLms)
                    {
                        FindSon(sonLm, currentFilePath);
                    }
                }
            }
            void WriteWZXml(Lm lm, string lmPath)
            {
                var wzs = wzGroupData.FirstOrDefault(wzGp => wzGp.Channelid == lm.Channelid)?.wzs?.Reverse();
                if (wzs is null) return;
                if (Directory.Exists(lmPath) is false) Directory.CreateDirectory(lmPath);
                const int onceNumber = 100;
                GetNumberOfCycle(out int cs, out int ys);
                for (int i = 1; i <= cs; i++)
                {
                    XmlDocument doc = new XmlDocument();
                    var docDec = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
                    var book = doc.CreateElement("book");
                    doc.AppendChild(docDec);
                    doc.AppendChild(book);
                    var edition = doc.CreateElement("edition");
                    edition.InnerText = "1.0";
                    var edition1 = doc.CreateElement("edition");
                    edition1.InnerText = "1.0";
                    var copyright = doc.CreateElement("copyright");
                    copyright.InnerText = "大汉网络";
                    book.AppendChild(edition);
                    book.AppendChild(edition1);
                    book.AppendChild(copyright);
                    var wzOfCycle = (i == cs ? wzs.TakeLast(ys) : wzs.Skip((i - 1) * onceNumber).Take(onceNumber));
                    foreach (var wz in wzOfCycle)
                    {
                        var article = doc.CreateElement("article");
                        book.AppendChild(article);
                        var title = doc.CreateElement("title");
                        title.InnerText = UseTemp(wz.Doctitle);
                        var caption = doc.CreateElement("caption");
                        caption.InnerText = UseTemp(wz.Subdoctitle);
                        var leadtitle = doc.CreateElement("leadtitle");
                        leadtitle.InnerText = UseTemp();
                        var linktitle = doc.CreateElement("linktitle");
                        linktitle.InnerText = UseTemp();
                        var href = doc.CreateElement("href");
                        href.InnerText = UseTemp();
                        var author = doc.CreateElement("author");
                        author.InnerText = UseTemp(wz.Docauthor);
                        var source = doc.CreateElement("source");
                        source.InnerText = UseTemp(wz.Docsourcename);
                        var userid = doc.CreateElement("userid");
                        userid.InnerText = UseTemp();
                        var editor = doc.CreateElement("editor");
                        editor.InnerText = UseTemp(wz.Doceditor);
                        var keyword = doc.CreateElement("keyword");
                        keyword.InnerText = UseTemp(wz.Dockeywords);
                        var classname = doc.CreateElement("classname");
                        classname.InnerText = UseTemp();
                        var describe = doc.CreateElement("describe");
                        describe.InnerText = UseTemp(wz.Docabstract);
                        var text = doc.CreateElement("text");
                        text.InnerText = UseTemp(wz.Dochtmlcon);
                        var datetime = doc.CreateElement("datetime");
                        datetime.InnerText = UseTemp(wz.Crtime?.ToString("yyyy-MM-dd HH:mm:ss"));
                        var deploytime = doc.CreateElement("deploytime");
                        deploytime.InnerText = UseTemp(wz.Docpubtime?.ToString("yyyy-MM-dd HH:mm:ss"));
                        var image = doc.CreateElement("image");
                        image.InnerText = UseTemp(IdentifyFileExt(wz.Srcfile, wz.Fileext, nameof(_image)));
                        var flash = doc.CreateElement("flash");
                        flash.InnerText = UseTemp(IdentifyFileExt(wz.Srcfile, wz.Fileext, nameof(_flash)));
                        var media = doc.CreateElement("media");
                        media.InnerText = UseTemp();
                        var attach = doc.CreateElement("attach");
                        attach.InnerText = UseTemp(IdentifyFileExt(wz.Srcfile, wz.Fileext, nameof(_attach)));
                        article.AppendChild(title);
                        article.AppendChild(caption);
                        article.AppendChild(leadtitle);
                        article.AppendChild(linktitle);
                        article.AppendChild(href);
                        article.AppendChild(author);
                        article.AppendChild(source);
                        article.AppendChild(userid);
                        article.AppendChild(edition);
                        article.AppendChild(keyword);
                        article.AppendChild(classname);
                        article.AppendChild(describe);
                        article.AppendChild(text);
                        article.AppendChild(datetime);
                        article.AppendChild(deploytime);
                        article.AppendChild(image);
                        article.AppendChild(flash);
                        article.AppendChild(media);
                        article.AppendChild(attach);
                        action?.Invoke(lm.Channelid,wz,doc,article);
                    }
                    doc.Save($"{lmPath}/{lm.Chnldesc}-文章-{i}.xml");
                }

                string UseTemp(string info = "")
                {
                    return $"<![CDATA[{info}]]>";
                }
                string IdentifyFileExt(string file, string ext, string type)
                {
                    file = $"/picture/old/{file}";
                    if (_image.Contains(ext) && type == nameof(_image)) return file;
                    else if (_flash.Contains(ext) && type == nameof(_flash)) return file;
                    else if (_attach.Contains(ext) && type == nameof(_attach)) return file;
                    //else if (type == nameof(_attach)) return file;
                    else return "";
                }
                void GetNumberOfCycle(out int cs, out int ys)
                {
                    int count = wzs.Count();

                    if (count == 0)
                    {
                        cs = 0;
                        ys = 0;
                    }
                    else if (count <= onceNumber)
                    {
                        cs = 1;
                        ys = count;
                    }
                    else
                    {
                        ys = count % onceNumber;
                        cs = ((count - ys) / onceNumber) + 1;
                    }
                }
            }
        }
        private void DeleteEmptyFloder(string path)
        {
            var floders = Directory.GetDirectories(path);
            foreach (string floder in floders)
            {
                var hasFile = Directory.GetFileSystemEntries(floder, "*.xml", SearchOption.AllDirectories).Count()>0;
                if (hasFile is false) Directory.Delete(floder,true);
                else DeleteEmptyFloder(floder);
            }         
        }
        private void Replace(string path)
        {
            var files = Directory.GetFileSystemEntries(path, "*.xml", SearchOption.AllDirectories);
            foreach (var filePath in files)
            {
                String xmlStr = "";
                using (StreamReader reader = new StreamReader(filePath, Encoding.UTF8))
                {
                    xmlStr = reader.ReadToEnd();
                }

                xmlStr = xmlStr.Replace("&lt;", "<")
                               .Replace("&gt;", ">")
                               .Replace("&amp;", "&")
                               .Replace("src=\"W", "src=\"/picture/old/W");
                using StreamWriter readTxt = new StreamWriter(filePath, false, Encoding.UTF8);
                readTxt.Write(xmlStr);
            }
         
        }
    }
}