using IES.ExamLib.Models;
using IES.ExamServer.DI;
using IES.ExamServer.DI.SignalRHost;
using IES.ExamServer.Filters;
using IES.ExamServer.Helper;
using IES.ExamServer.Helpers;
using IES.ExamServer.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Configuration;
using System.Linq.Expressions;
using System.Net.Http;
using System.Text.Json;
using System.Text.Json.Nodes;

namespace IES.ExamServer.Controllers
{
    [ApiController]
    [Route("manage")]
    public class ManageController:BaseController
    {
        private readonly IConfiguration _configuration;
        private readonly IHttpClientFactory _httpClientFactory;
        private readonly IMemoryCache _memoryCache;
        private readonly ILogger _logger;
        private readonly LiteDBFactory _liteDBFactory;
        private readonly DataCenterConnectionService _connectionService;
        private readonly int DelayMicro = 10;//微观数据延迟
        private readonly int DelayMacro = 100;//宏观数据延迟
        private readonly SignalRExamServerHub _signalRExamServerHub;
        public ManageController(LiteDBFactory liteDBFactory,ILogger logger, IConfiguration configuration,
            IHttpClientFactory httpClientFactory, IMemoryCache memoryCache, DataCenterConnectionService connectionService,SignalRExamServerHub signalRExamServerHub)
        {
            _logger = logger;
            _configuration=configuration;
            _httpClientFactory=httpClientFactory;
            _memoryCache=memoryCache;
            _liteDBFactory=liteDBFactory;
            _connectionService=connectionService;
            _signalRExamServerHub=signalRExamServerHub;
        }
        [HttpPost("download-package")]
        [AuthToken("admin","teacher")]
        public async Task<IActionResult> DownloadPackage(JsonNode json)
        {

            //C#.NET 6 后端与前端流式通信
            //https://www.doubao.com/chat/collection/687687510791426?type=Thread
            //下载日志记录：1.步骤，检查，2.获取描述信息，3.分类型，4下载文件，5.前端处理，6.返回结果 ， 正在下载...==> [INFO]https://www.doubao.com/chat/collection/687687510791426?type=Thread [Size=180kb] Ok...
            //进度条 展示下载文件总大小和已下载，末尾展示 文件总个数和已下载个数
            //https://cdnjs.cloudflare.com/ajax/libs/microsoft-signalr/8.0.7/signalr.min.js
            return Ok();
        }
        [HttpPost("check-short-code")]
        public async Task<IActionResult> CheckShortCode(JsonNode json)
        {
           
            string shortCode = $"{json["shortCode"]}";
            string evaluationId = $"{json["evaluationId"]}";
            string deviceId = $"{json["deviceId"]}";
            Expression<Func<EvaluationClient, bool>> predicate = x => true;

            if (!string.IsNullOrEmpty(shortCode))
            {
                var codePredicate = ExpressionHelper.Or<EvaluationClient>(
                    x => !string.IsNullOrWhiteSpace(x.shortCode) &&  x.shortCode == shortCode,
                    x => !string.IsNullOrWhiteSpace(x.password) &&  x.password == shortCode
                );
                predicate= predicate.And(codePredicate);
            }
            else {
                return Ok(new { code = 400,msg="必须输入开卷码" });
            }
            if (!string.IsNullOrWhiteSpace(evaluationId))
            {
                predicate= predicate.And(x => x.id!.Equals(evaluationId));
            }
            IEnumerable<EvaluationClient> evaluationClients = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().Find(predicate);
            EvaluationClient? evaluationLocal = null;
            EvaluationClient? evaluationCloud = null;
            if (evaluationClients.Count()>0)
            {
                evaluationLocal= evaluationClients.First();
            }
            //如果要访问中心，则需要教师登录联网。  
            var token = GetAuthTokenInfo();
            if (token.scope.Equals(ExamConstant.ScopeTeacher))
            {
                if (  _connectionService.dataCenterIsConnected)
                {
                    Teacher teacher=  _liteDBFactory.GetLiteDatabase().GetCollection<Teacher>().FindOne(x => x.id!.Equals(token.id));
                    string? CenterUrl = _configuration.GetValue<string>("ExamServer:CenterUrl");
                    var client = _httpClientFactory.CreateClient();
                    if (client.DefaultRequestHeaders.Contains(Constant._X_Auth_AuthToken)) 
                    {
                        client.DefaultRequestHeaders.Remove(Constant._X_Auth_AuthToken);
                    }
                    client.DefaultRequestHeaders.Add(Constant._X_Auth_AuthToken, teacher.x_auth_token);
                    HttpResponseMessage message = await client.PostAsJsonAsync($"{CenterUrl}/evaluation-sync/find-sync-info",new { shortCode, evaluationId });
                    if (message.IsSuccessStatusCode) 
                    {
                        string content = await message.Content.ReadAsStringAsync();
                        JsonNode? jsonNode =content.ToObject<JsonNode>();
                        if (jsonNode!=null) 
                        {
                            evaluationCloud=jsonNode["evaluation"]?.ToObject<EvaluationClient>(); 
                        }
                    }
                }
            }
            //数据，文件，页面 0 没有更新，1 有更新
            int data = 0,blob=0,webview=0, groupList=0, status=0;
            long dataSize = 0, blobSize=0 , webviewSize=0, studentCount=0;
            if (evaluationLocal== null && evaluationCloud==null)
            {
                //线上线下没有数据
                status=1;
                
            }
            else if (evaluationLocal!=null && evaluationCloud!=null) 
            {
                //线上线下有数据
                status = 2;
                if ((!string.IsNullOrWhiteSpace(evaluationLocal.blobHash) &&  !evaluationLocal.blobHash.Equals(evaluationCloud.blobHash))
                    ||(evaluationLocal.blobTime<evaluationCloud.blobTime) 
                    ||(evaluationLocal.blobCount!= evaluationCloud.blobCount)
                    ||(evaluationLocal.blobSize!= evaluationCloud.blobSize))
                {
                    blob=1;
                    blobSize=evaluationCloud.blobSize;
                }
                if ((evaluationLocal.dataTime<evaluationCloud.dataTime)
                    ||(evaluationLocal.dataSize!=evaluationCloud.dataSize)
                    ||(evaluationLocal.paperCount!= evaluationCloud.paperCount)
                    )
                {
                    data=1;
                    dataSize=evaluationCloud.dataSize;
                }
                if ((evaluationLocal.webviewCount!=evaluationCloud.webviewCount)
                    ||(evaluationLocal.webviewSize!= evaluationCloud.webviewSize)
                    ||(evaluationLocal.webviewTime!= evaluationCloud.webviewTime)
                    ||(!string.IsNullOrWhiteSpace(evaluationLocal.webviewPath)&&  !evaluationLocal.webviewPath.Equals(evaluationCloud.webviewPath)))
                {
                    webview=1;
                    webviewSize=evaluationCloud.webviewSize;
                }
                if ((evaluationLocal.studentCount!= evaluationCloud.studentCount)||(!$"{evaluationLocal.grouplistHash}".Equals(evaluationCloud.grouplistHash)))  
                {
                    groupList=1;
                    studentCount=evaluationCloud.studentCount;
                }
            }
            else if (evaluationLocal!=null && evaluationCloud==null)
            {
                //线下有数据，线上没有数据,可能没联网。
                status = 3;
            }
            else if (evaluationLocal==null && evaluationCloud!=null)
            {
                //线下没有数据，线上有数据
                evaluationLocal= evaluationCloud;
                blob=1;
                data=1;
                webview=1;
                groupList=1;
                blobSize=evaluationCloud.blobSize;
                dataSize=evaluationCloud.dataSize;
                webviewSize=evaluationCloud.webviewSize;
                studentCount=evaluationCloud.studentCount;
                status = 4;
                _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().Insert(evaluationLocal);
            }
            List<string> file_error = new List<string>();
            if (evaluationLocal!=null)
            {


                await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file, 
                    new MessageContent {dataId=evaluationLocal.id,dataName=evaluationLocal.name,messageType=Constant._Message_type_message, status=0, content="开始检查评测信息文件.." });
                //校验本地文件数据
                string packagePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "package");
                if (!Directory.Exists(packagePath))
                    Directory.CreateDirectory(packagePath);
                string evaluationPath = Path.Combine(packagePath, evaluationLocal.id!);
               // await Task.Delay(DelayMacro);
                int msg_status = Constant._Message_status_info;
                string path_evaluation = Path.Combine(evaluationPath, "evaluation.json");
                if (!System.IO.File.Exists(path_evaluation))
                {
                    file_error.Add("evaluation");
                    msg_status=Constant._Message_status_error;
                }
                else 
                {
                    msg_status=Constant._Message_status_success;
                    //string jsonData =  await System.IO.File.ReadAllTextAsync(path_evaluation);
                    //EvaluationClient? evaluationFile =jsonData.ToObject<EvaluationClient>();
                    //if (evaluationFile!=null)
                    //{
                    //    if (evaluationFile.dataSize==evaluationLocal.dataSize )
                    //    {
                    //        file_error.Add("evaluation");
                    //        msg_status=Constant._Message_status_error;
                    //    }
                    //    else
                    //    {
                    //        msg_status=Constant._Message_status_success;
                    //    }
                    //}
                    //else
                    //{
                    //    file_error.Add("evaluation");
                    //    msg_status=Constant._Message_status_error;
                    //}
                }
                //数据格式:  [消息][信息/错误/警告][15:43]=>[开始检查评测信息文件...]
                //数据格式:  [检查][成功/失败][15:43]=>[评测数据文件：/wwwroot/package/623a9fe6-5445-0938-ff77-aeb80066ef27/evaluation.json]
                //数据格式:  [下载][成功/失败][15:43]=>[评测数据文件：/wwwroot/package/623a9fe6-5445-0938-ff77-aeb80066ef27/evaluation.json][1024kb][15ms]
                await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file, 
                    new MessageContent { dataId=evaluationLocal.id, dataName=evaluationLocal.name, messageType= Constant._Message_type_check, status=msg_status,content=$"评测数据文件：{path_evaluation}" });
                //await Task.Delay(DelayMacro);
                string path_groupList = Path.Combine(evaluationPath, "groupList.json");
                msg_status =Constant._Message_status_info;
                if (!System.IO.File.Exists(path_groupList))
                {
                    file_error.Add("groupList");
                    msg_status=Constant._Message_status_error;
                }
                else
                {
                    msg_status=Constant._Message_status_success;
                }
                await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file, 
                    new MessageContent { dataId=evaluationLocal.id, dataName=evaluationLocal.name, messageType= Constant._Message_type_check, status=msg_status, content=$"评测名单文件：{path_groupList}" });
                //await Task.Delay(DelayMacro);
                string path_source = Path.Combine(evaluationPath, "source.json");
                msg_status = Constant._Message_status_info;
                if (!System.IO.File.Exists(path_source))
                {
                    file_error.Add("source");
                    msg_status=Constant._Message_status_error;
                }
                else
                {
                    msg_status=Constant._Message_status_success;
                }
                await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file,
                    new MessageContent { dataId=evaluationLocal.id, dataName=evaluationLocal.name, messageType= Constant._Message_type_check, status=msg_status, content=$"评测原始数据：{path_source}" });
               // await Task.Delay(DelayMacro);
                msg_status =Constant._Message_status_info;
                try {

                    string evaluation_str = await System.IO.File.ReadAllTextAsync(path_evaluation);
                    JsonNode? evaluation_data = evaluation_str.ToObject<JsonNode>(); 
                    
                    if (evaluation_data!=null) 
                    {
                        EvaluationClient? evaluationClient = evaluation_data["evaluationClient"]?.ToObject<EvaluationClient>(); 
                        if (evaluationClient!=null) 
                        {
                            if ((!string.IsNullOrWhiteSpace(evaluationLocal.blobHash) && evaluationLocal.blobHash.Equals(evaluationClient.blobHash))
                                &&(evaluationLocal.blobTime==evaluationClient.blobTime)
                                &&(evaluationLocal.blobCount== evaluationClient.blobCount)
                                &&(evaluationLocal.blobSize== evaluationClient.blobSize)&& (evaluationLocal.dataTime==evaluationClient.dataTime)
                                &&(evaluationLocal.dataSize==evaluationClient.dataSize)&&(evaluationLocal.webviewCount==evaluationClient.webviewCount)
                                &&(evaluationLocal.webviewSize== evaluationClient.webviewSize)
                                &&(evaluationLocal.webviewTime== evaluationClient.webviewTime)
                                &&(!string.IsNullOrWhiteSpace(evaluationLocal.webviewPath)&&  evaluationLocal.webviewPath.Equals(evaluationClient.webviewPath)))
                            {
                                msg_status=1;
                            }
                            else
                            {
                                msg_status=Constant._Message_status_error;
                            }
                            await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file,
                                new MessageContent { dataId=evaluationLocal.id, dataName=evaluationLocal.name, messageType=Constant._Message_type_message, status=msg_status, content="校验本地数据文件..." });
                        }

                        List<EvaluationExam>? evaluationExams = evaluation_data["evaluationExams"]?.ToObject<List<EvaluationExam>>();
                        if (evaluationExams.IsNotEmpty()) 
                        {
                            string path_papers = Path.Combine(evaluationPath, "papers");
                            var papers_files = FileHelper.ListAllFiles(path_papers);
                            foreach (var evaluationExam in evaluationExams!)
                            {

                                int paperIndex = 0;
                                foreach (var paper in evaluationExam.papers) 
                                {
                                    paperIndex++;
                                    List<MessageContent> contents = new List<MessageContent>();
                                    int paper_error_count = 0;
                                    foreach (var blobInfo in paper.blobs)
                                    {
                                        msg_status=Constant._Message_status_info;
                                        if (!string.IsNullOrWhiteSpace(blobInfo.path))
                                        {
                                           
                                            var file = papers_files.Find(x => x.Contains(blobInfo.path));
                                            if (file!=null)
                                            {
                                                msg_status=1;
                                                msg_status=Constant._Message_status_success;
                                            }
                                            else {
                                                msg_status=Constant._Message_status_error;
                                                paper_error_count++;
                                            }

                                        }
                                        else {
                                            msg_status=Constant._Message_status_warning; ;
                                            paper_error_count++;
                                        }
                                        contents.Add(new MessageContent {
                                            dataId=evaluationLocal.id,
                                            dataName=evaluationLocal.name,
                                            messageType=Constant._Message_type_check, status=msg_status, content=$"试卷文件信息：{paper.paperName}" });
                                    }
                                    int paper_msg_status = Constant. _Message_status_info;
                                    if (paper_error_count>0)
                                    {
                                        paper_msg_status=Constant._Message_status_error;
                                    }
                                    else {
                                        paper_msg_status=Constant._Message_status_success;
                                    }
                                    await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file, 
                                        new MessageContent {
                                            dataId=evaluationLocal.id,
                                            dataName=evaluationLocal.name,
                                            messageType=Constant._Message_type_message,
                                            status=paper_msg_status,
                                            content=$"试卷名称：[{paperIndex}]{evaluationExam.examName}-{evaluationExam.subjectName}-{paper.paperName}\r\n文件数量：{paper.blobs.Count()}，检测成功数量:{contents.Count(x => x.status==Constant._Message_status_success)}，检测异常数量{contents.Count(x => x.status==Constant._Message_status_error)}",
                                            contents=contents
                                        });
                                }
                            }
                        }
                    }
                }
                catch (Exception e) { 
                
                }
                //检测参考名单
                await _signalRExamServerHub.SendMessage(deviceId, Constant._Message_grant_type_check_file, 
                    new MessageContent {
                        dataId=evaluationLocal.id,
                        dataName=evaluationLocal.name,
                        messageType=Constant._Message_type_message, status=0, content="提取评测数据文件..." });
            }
            return Ok(new {code=200, evaluation= evaluationLocal,data,blob,webview,dataSize,blobSize,webviewSize,status ,groupList,studentCount});
        }

        /// <summary>
        /// 激活考试
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("activate-evaluation")]
        public IActionResult ActivateEvaluation(JsonNode json)
        {
            string id = $"{json["id"]}";
            string shortCode = $"{json["shortCode"]}";
            if (!string.IsNullOrWhiteSpace(id) && !string.IsNullOrWhiteSpace(shortCode)) 
            {
                EvaluationClient evaluationClient = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().FindOne(x => x.id!.Equals(id) && !string.IsNullOrWhiteSpace(x.shortCode) && x.shortCode.Equals(shortCode));
                if (evaluationClient != null)
                {

                }
            }
            return Ok();
        }
        /// <summary>
        /// 加载本地的活动列表
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("list-local-evaluation")]
        public IActionResult ListLocalEvaluation(JsonNode json) 
        {

            IEnumerable<EvaluationClient> evaluationClients = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().FindAll().OrderByDescending(x=>x.activate).ThenByDescending(x=>x.stime);
            var result = evaluationClients.Select(client =>
            {
                var properties = client.GetType().GetProperties();
                var anonymousObject = new Dictionary<string, object?>();
                foreach (var property in properties)
                {
                    if (!property.Name .Equals("password")  && !property.Name.Equals("shortCode"))
                    {
                        anonymousObject[property.Name] = property.GetValue(client);
                    }
                }
                return anonymousObject;
            });
            return Ok(new {code=200, evaluation= result });
        }
    }
}