using IES.ExamLibrary.Models;
using IES.ExamServer.DI;
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.Hosting;
using Microsoft.VisualBasic;
using System;
using System.Text.Json.Nodes;
using System.Threading.Tasks;

namespace IES.ExamServer.Controllers
{
    [ApiController]
    [Route("student")]
    public class StudentController : BaseController
    {
        private readonly IConfiguration _configuration;
        private readonly IHttpClientFactory _httpClientFactory;
        private readonly IMemoryCache _memoryCache;
        private readonly ILogger<IndexController> _logger;
        private readonly CenterServiceConnectionService _connectionService;
        private readonly LiteDBFactory _liteDBFactory;
        private readonly DataQueue   _dataQueue;
        public StudentController(ILogger<IndexController> logger, IConfiguration configuration, IHttpClientFactory httpClientFactory,
         IMemoryCache memoryCache, CenterServiceConnectionService connectionService, LiteDBFactory liteDBFactory, DataQueue dataQueue)
        {
            _logger = logger;
            _configuration=configuration;
            _httpClientFactory=httpClientFactory;
            _memoryCache=memoryCache;
            _connectionService=connectionService;
            _liteDBFactory=liteDBFactory;
            _dataQueue=dataQueue;
        }
        /// <summary>
        ///  学生提交音乐作答
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("submit-music-ai-result")]
        [AuthToken("student")]
        public IActionResult SubmitMusicAIResult(JsonNode json) 
        {
            int finished = int.Parse($"{json["finished"]}");
            string evaluationId = $"{json["evaluationId"]}";
            string taskId = $"{json["taskId"]}";
            string questionId = $"{json["questionId"]}";
            long costTime = int.Parse($"{json["costTime"]}");
            string settingId = $"{json["settingId"]}";
            var token = GetAuthTokenInfo();
            EvaluationRoundSetting? setting = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationRoundSetting>().FindOne(x => x.id!.Equals(settingId) && evaluationId.Equals(x.evaluationId) && x.activate==1);
            EvaluationClient? evaluationClient = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().FindOne(x => evaluationId.Equals(x.id));
            if (evaluationClient!=null && setting!=null && setting.activate==1)
            {
                string resultId = ShaHashHelper.GetSHA1(evaluationId+_connectionService?.serverDevice?.school?.id+token.id);
                EvaluationStudentResult studentResult = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationStudentResult>()
                .FindOne(x => resultId.Equals(x.id) && token.id.Equals(x.studentId) && evaluationId.Equals(x.evaluationId));
                if (studentResult!=null)
                {
                    long now = DateTimeOffset.Now.ToUnixTimeMilliseconds();
                    //判断开始时间
                    if ((setting.startline>0 && setting.startline>now)|| evaluationClient.stime>now)
                    {
                        //未到开始时间
                        return Ok(new { msg = "未到开始时间。", code = 1 });
                    }

                    //判断截止时间
                    long deadline;
                    if (setting.countdownType==2)
                    {

                        deadline= studentResult.startTime+setting.countdown;
                    }
                    else
                    {
                        deadline= setting.startline+setting.countdown;

                    }
                    deadline+= 10*60*1000;//漂移10分钟，允许学生延迟提交，但是前端页面显示的截止时间是准的，时间一到，可自动提交。
                                          //已过截止时间
                                          //if ((deadline>0&&deadline<now)|| evaluationClient.etime<now)
                                          //{
                                          //    return Ok(new { msg = "已过截止时间。", code = 2 });
                                          //}    
                    if (!string.IsNullOrWhiteSpace(questionId)  && !string.IsNullOrWhiteSpace(taskId) && costTime>0)
                    {
                        var result = new EvaluationMusicAIResult()
                        {
                            id= ShaHashHelper.GetSHA1($"{evaluationId}{questionId}{taskId}{token.id}"),
                            taskId = taskId,
                            questionId = questionId,
                            costTime = costTime,
                            finished = finished,
                            submitTime = now,
                            questionName=!string.IsNullOrWhiteSpace(evaluationClient?.music?.questionName) ? evaluationClient.music.questionName : null,
                            evaluationId=evaluationId,
                            createTime=now,
                            pushed=0//强制重新推送
                        };
                        studentResult.musicAIResult= result;
                        if (_connectionService!.centerIsConnected)
                        {
                            result.pushed=1;
                            studentResult.musicAIResult.pushed=1;
                        }
                        _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationMusicAIResult>().Upsert(result);
                        _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationStudentResult>().Upsert(studentResult);
                        return Ok(new { code = 200, studentResult = studentResult, msg = "提交成功！" });
                    }
                    else
                    {
                        return Ok(new { msg = "提交失败，请检查参数。", code = 3 });
                    }
                }
                else
                {
                    return Ok(new { msg = "未找到该学生的作答信息。", code = 4 });
                }
            }
            else { 
                return Ok(new { msg = "未匹配到正则开考的评测。", code = 5 });
            }
          
        }
        /// <summary>
        ///  学生提交科目作答
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("submit-subject-result")]
        [AuthToken("student")]
        public async Task<IActionResult> SubmitSubjectResult(JsonNode json)
        {
            List<List<string>>? answers = json["answer"]?.ToObject<List<List<string>>>();
            string evaluationId = $"{json["evaluationId"]}";
            string examId = $"{json["examId"]}";
            string subjectId = $"{json["subjectId"]}";
            string paperId = $"{json["paperId"]}";
            long costTime = int.Parse($"{json["costTime"]}");
            string settingId = $"{json["settingId"]}";
            var token = GetAuthTokenInfo();
            EvaluationRoundSetting? setting = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationRoundSetting>().FindOne(x => x.id!.Equals(settingId) && evaluationId.Equals(x.evaluationId) && x.activate==1);
            EvaluationClient? evaluationClient = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().FindOne(x=>evaluationId.Equals(x.id));
            if (evaluationClient!=null && setting!=null && setting.activate==1)
            {
                string resultId = ShaHashHelper.GetSHA1(evaluationId+_connectionService?.serverDevice?.school?.id+token.id);
                EvaluationStudentResult studentResult = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationStudentResult>()
                .FindOne(x => resultId.Equals(x.id) && token.id.Equals(x.studentId) && evaluationId.Equals(x.evaluationId));
                if (studentResult!=null)
                {
                    long now = DateTimeOffset.Now.ToUnixTimeMilliseconds();
                    //判断开始时间
                    if ((setting.startline>0 && setting.startline>now)|| evaluationClient.stime>now)
                    {
                        //未到开始时间
                        return Ok(new { msg = "未到开始时间。", code = 1 });
                    }

                    //判断截止时间
                    long deadline;
                    if (setting.countdownType==2)
                    {

                        deadline= studentResult.startTime+setting.countdown;
                    }
                    else
                    {
                        deadline= setting.startline+setting.countdown;

                    }
                    deadline+= 10*60*1000;//漂移10分钟，允许学生延迟提交，但是前端页面显示的截止时间是准的，时间一到，可自动提交。
                    //已过截止时间
                    //if ((deadline>0&&deadline<now)|| evaluationClient.etime<now)
                    //{
                       
                    //    return Ok(new { msg = "已过截止时间。", code = 2 });
                    //}
                    if (!string.IsNullOrWhiteSpace(subjectId)  && !string.IsNullOrWhiteSpace(examId) && !string.IsNullOrWhiteSpace(paperId))
                    {
                       
                        if (answers!.IsNotEmpty())
                        {
                            var subjectExams= evaluationClient.subjects.FindAll(x => examId.Equals(x.examId)&& subjectId.Equals(x.subjectId));
                            var papers= subjectExams.FirstOrDefault()?.papers.FindAll(x => paperId.Equals(x.paperId));
                            if (papers.IsNotEmpty())
                            {
                                if (answers!.Count()!=papers!.First()?.questionCount) 
                                {
                                    return Ok(new { msg = "提交的答案数量与试卷题目数量不匹配。", code = 5 });
                                }
                            }
                            string subjectResultId = ShaHashHelper.GetSHA1(evaluationClient.id+examId+subjectId+token.id);
                            var subjectResult = studentResult.subjectResults.Where(x => subjectResultId.Equals(x.id) &&  subjectId.Equals(x.subjectId)
                                    && examId.Equals(x.examId) && paperId.Equals(x.paperId)).FirstOrDefault();
                            EvaluationSubjectResult result = new EvaluationSubjectResult()
                            {
                                id = subjectResultId,
                                evaluationId = evaluationId,
                                examId = examId,
                                examName = subjectResult?.examName,
                                subjectId = subjectId,
                                subjectName = subjectResult?.subjectName,
                                paperId =paperId,
                                paperName = subjectResult?.paperName,
                                createTime=now,
                                finished=1,
                                costTime=costTime,
                                submitTime=now,
                                answers=answers,
                                questionCount=papers.IsNotEmpty() ? papers!.First().questionCount : 0,
                                pushed=0//强制重新推送
                            };
                            if (subjectResult!=null)
                            {
                                subjectResult.answers=answers;
                                subjectResult.finished=1;
                                subjectResult.costTime=costTime;
                                subjectResult.submitTime=now;
                                subjectResult.pushed=0;//强制重新推送
                            }
                            else 
                            {
                                studentResult.subjectResults.Add(result);
                            }
                           
                            if (_connectionService!.centerIsConnected)
                            {
                                result.pushed=1;
                                if (subjectResult!=null)
                                {
                                    subjectResult!.pushed=1;
                                }
                               await _dataQueue.TryAddAsync(new SubjectPushData(result, studentResult));
                            }
                            _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationSubjectResult>().Upsert(result);
                            _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationStudentResult>().Upsert(studentResult);
                           
                        }
                       
                    }
                    return Ok(new { code = 200, studentResult = studentResult, msg = "提交成功！" });
                }
                else { 
                    return Ok(new { msg = "未找到该学生的作答信息。", code = 4});
                }

            }
            else 
            {
                return Ok(new { msg = "未匹配到正则开考的评测。", code = 3 });
            }
           

           
        }



        /// <summary>
        /// 获取学生当前考试的作答信息。
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("load-evaluation-result")]
        [AuthToken("student")]
        public IActionResult LoadEvaluationResult(JsonNode json)
        {
            string evaluationId = $"{json["evaluationId"]}";
            var token = GetAuthTokenInfo();//6af32bbd-144e-4366-8bc0-61ba4c85677c
            string resultId = ShaHashHelper.GetSHA1(evaluationId+_connectionService?.serverDevice?.school?.id+token.id);
            string? scoolId = _connectionService?.serverDevice?.school?.id;
            EvaluationStudentResult studentResult = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationStudentResult>()
                .FindOne(x=> resultId.Equals(x.id) && !string.IsNullOrWhiteSpace(x.schoolId) &&  x.schoolId.Equals(scoolId)&& token.id.Equals(x.studentId) && evaluationId.Equals(x.evaluationId));
            if (studentResult!=null)
            {
                //标记开始作答
                if (studentResult.finished<1)
                {
                    studentResult.finished=1;
                }
                if (studentResult.startTime<=0) 
                {
                    studentResult.startTime=DateTimeOffset.Now.ToUnixTimeMilliseconds();
                }
                _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationStudentResult>().Update(studentResult);
                return Ok(new { code = 200, studentResult = studentResult });
            }
            else { 
                return Ok(new { msg = "未找到该学生的作答信息。", code = 404});
            }
        }

        /// <summary>
        /// 登录
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("login")]
        public IActionResult Login(JsonNode json) 
        {
            string studentId = $"{json["studentId"]}";
            string studentName = $"{json["studentName"]}";
            string evaluationId = $"{json["evaluationId"]}";
            string settingId = $"{json["settingId"]}";
            EvaluationRoundSetting? setting = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationRoundSetting>().FindOne(x => x.id!.Equals(settingId) && evaluationId.Equals(x.evaluationId) && x.activate==1);
            EvaluationClient? evaluationClient = null;
            if (setting!=null)
            {
                evaluationClient = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().FindOne(x => x.id!.Equals(setting.evaluationId));
                if (evaluationClient!=null)
                {
                    //检查是否在作答时间内
                    (code, msg)=  CheckActivate(evaluationClient, setting);
                    if (code==200)
                    {
                        long time = DateTimeOffset.Now.ToUnixTimeMilliseconds();
                        _memoryCache.TryGetValue(Constant._KeyServerDevice, out ServerDevice? server);
                        School? school = null;
                        ///获取名单文件，解析信息，应该在设置开考轮次的时候进行解析，并放在数据库中，并且在此时看是否是需要 分配试卷，还是在登录的时候获取试卷。
                        if (server!=null)
                        {
                            school = server.school;
                        }
                        EvaluationMember? member = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationMember>().FindOne(x => studentId.Equals(x.id)&& studentName.Equals(x.name));
                        if (member!=null)
                        {
                            if (evaluationId.Equals(member.evaluationId))
                            {
                                string x_auth_token = JwtAuthExtension.CreateAuthToken("www.teammodel.cn", studentId, studentName, picture: string.Empty, ExamConstant.JwtSecretKey, ExamConstant.ScopeStudent, 8, schoolID: school?.id, new string[] { "student" },expire: 1, year: member.year);
                                return Ok(new { code = 200, x_auth_token = x_auth_token });
                            }
                            else
                            {
                                return Ok(new { msg = "当前考试未添加该学生！", code = 7 });
                            }

                        }
                        else
                        {
                           return Ok(new { msg = "学者账号和姓名不匹配！", code = 1 });
                        }

                    }
                    else { 
                        return Ok(new { msg = msg, code = code });
                    }
                }
                else { 
                    return Ok(new { msg = "未找到考试设置。", code = 6 });
                }
            }
            else { 
                return Ok(new { msg = "未找到考试设置。", code = 2 });
            }
        }
        /// <summary>
        /// 学生端获取激活的考试
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [HttpPost("get-activate-evaluation")]
        public   IActionResult GetActivateEvaluation(JsonNode json) 
        {
            //  _connectionService.serverDevice.school.id?

            try
            {
                IEnumerable<EvaluationRoundSetting>? settings = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationRoundSetting>().Find(x =>x.activate==1 );
                if (settings != null && settings.Count() > 0) 
                {
                    if (settings.Count()>1)
                    {
                        msg="有多个正在开考的评测，请监考教师重新设置开考评测。";
                        code=2;
                    }
                    else 
                    {
                        EvaluationRoundSetting? setting = settings.First(); ;

                        EvaluationClient evaluationClient = _liteDBFactory.GetLiteDatabase().GetCollection<EvaluationClient>().FindOne(x => x.id ==setting.evaluationId);
                        if (evaluationClient!=null)
                        {
                            (code ,msg)= CheckActivate(evaluationClient, setting);
                            var anonymousObject = new Dictionary<string, object?>();
                            var properties = evaluationClient.GetType().GetProperties();
                            foreach (var property in properties)
                            {
                                if (!property.Name.Equals("shortCode") && !property.Name.Equals("openCode"))
                                {
                                    anonymousObject[property.Name] = property.GetValue(evaluationClient);
                                }
                            }
                            return Ok(new { evaluationClient = anonymousObject, code = code, msg = msg, setting });
                        }
                        else 
                        {
                            msg="未找到评测信息。";
                            code=6;
                        }
                        //foreach (var subject in evaluationClient.subjects)
                        //{
                        //    foreach (var paper in subject.papers)
                        //    {
                        //        paper.blob=$"package/{evaluationClient.id}/papers/{paper.paperId}";
                        //    }
                        //}
                      
                    }
                }
                else
                {
                    msg="暂无正在开考的评测";
                    code=1;
                }
            }
            catch (Exception ex) { }
            return Ok(new { msg ,code});
        }

        private (int code, string msg) CheckActivate(EvaluationClient evaluationClient, EvaluationRoundSetting setting)
        {
            code = 200;
            if (evaluationClient.scope!.Equals("school"))
            {
                if (!evaluationClient!.ownerId!.Equals($"{_connectionService.serverDevice?.school?.id}"))
                {
                    msg="授权学校与评测归属学校不一致。";
                    code=3;
                }
            }
            //当前时间
            long now = DateTimeOffset.Now.ToUnixTimeMilliseconds();
            //if (setting.countdownType>0)
            //{
               
            //}
            //else
            //{
               
            //}
            if ((setting.startline>0 &&setting.startline>now) || evaluationClient.stime>now)
            {
                msg="评测暂未开始。";
                code=4;
            }
            if ((setting.deadline>0 && setting.deadline<now)|| evaluationClient.etime<now)
            {
                msg="评测已经结束。";
                code=5;
            }
            return (code, msg);
        }
       
    }
}