using AutoMapper;
using Microsoft.AspNetCore.Http;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using VOL.Business.IServices;
using VOL.Business.IServices.Norm;
using VOL.Business.IServices.School;
using VOL.Business.IServices.SportsHall;
using VOL.Business.Services.School;
using VOL.Core.CacheManager;
using VOL.Core.Extensions.AutofacManager;
using VOL.Core.ManageUser;
using VOL.Core.Utilities;
using VOL.Entity.DomainModels;
using VOL.Entity.Enum;
using VOL.Model;
using VOL.Model.IOT.Request;
using VOL.Model.School.Request;
using VOL.Model.School.Response;
using VOL.Model.SportsHall;
using VOL.System.IRepositories;
using VOL.System.Repositories;

namespace VOL.Business.Services.SportsHall
{
    /// <summary>
    /// 运动馆
    /// </summary>
    public class SportsHallService : ISportsHallService, IDependency
    {
        #region 初始化 
        private readonly IS_ClassRepository _classRepository;
        private readonly IS_GradeRepository _gradeRepository;
        private readonly IS_ClassAssocTeacherRepository _classAssocTeacherRepository;
        private readonly IS_StudentRepository _studentRepository;
        IN_HealthStandardsRepository _healthStandardsRepository;
        IN_SportsTestResultRepository _sportsTestResultRepository;

        [ActivatorUtilitiesConstructor]
        public SportsHallService(IS_ClassRepository classRepository,
                 IS_GradeRepository gradeRepository,
                 IS_ClassAssocTeacherRepository classAssocTeacherRepository,
                 IS_StudentRepository studentRepository,
                 IN_HealthStandardsRepository healthStandardsRepository,
                 IN_SportsTestResultRepository sportsTestResultRepository)
        {
            _classRepository = classRepository;
            _gradeRepository = gradeRepository;
            _classAssocTeacherRepository = classAssocTeacherRepository;
            _studentRepository = studentRepository;
            _healthStandardsRepository = healthStandardsRepository;
            _sportsTestResultRepository = sportsTestResultRepository;
        }
        #endregion

        /// <summary>
        /// 新增班级
        /// </summary>
        /// <param name="paramDto"></param>
        /// <returns></returns>
        public async Task AddClass(AddSportsHallClassParam paramDto)
        {
            var tenantId = UserContext.Current.TenantId;

            var grade = await _gradeRepository.FindAsIQueryable(x => x.GradeName == "运动馆").Select(x => new { x.Id, x.GradeName }).FirstAsync();

            var exist = await _classRepository.ExistsAsync(x => x.SchoolCode == tenantId && x.ClassName == paramDto.ClassName && x.GradeId == grade.Id);
            if (exist)
                throw new Exception("班级名称已存在");

            var classEntity = new S_Class()
            {
                GradeId = grade.Id,
                GradeName = grade.GradeName,
                ClassName = paramDto.ClassName,
                Creator = UserContext.Current.UserId,
                SchoolCode = UserContext.Current.TenantId,
                CreateDate = DateTime.Now
            };

            using (var transaction = _classRepository.DbContext.Database.BeginTransaction())
            {
                try
                {
                    await _classRepository.AddAsync(classEntity);
                    await _classRepository.SaveChangesAsync();

                    int classId = classEntity.Id;

                    var classAssocTeacherList = new List<S_ClassAssocTeacher>();

                    paramDto.TeacherIds.ForEach(x =>
                    {
                        classAssocTeacherList.Add(new S_ClassAssocTeacher()
                        {
                            ClassId = classId,
                            TeacherId = x,
                            Creator = UserContext.Current.UserId,
                            CreateDate = DateTime.Now,
                            Modifier = UserContext.Current.UserId,
                            ModifyDate = DateTime.Now,
                        });
                    });

                    await _classAssocTeacherRepository.AddRangeAsync(classAssocTeacherList);

                    var students = await _studentRepository.FindAsync(x => paramDto.studentNoList.Contains(x.StudentNo));

                    foreach (var student in students)
                    {
                        student.ClassId = classId;

                        int index = paramDto.studentNoList.IndexOf(student.StudentNo);

                        student.OrderNo = index >= 0 ? index + 1 : 0;
                    }

                    _studentRepository.UpdateRange(students);
                    await _studentRepository.SaveChangesAsync();


                    // 提交事务
                    transaction.Commit();
                }
                catch (Exception ex)
                {
                    // 发生错误，回滚事务
                    transaction.Rollback();
                    Console.WriteLine("事务回滚：" + ex.Message);
                }
            }
        }

        /// <summary>
        /// 更新班级
        /// </summary>
        /// <param name="paramDto"></param>
        /// <returns></returns>
        public async Task ModifyClass(ModifySportsHallClassParam paramDto)
        {
            var tenantId = UserContext.Current.TenantId;
            var classModel = await _classRepository.FindAsyncFirst(x => x.Id == paramDto.ClassId);

            var grade = await _gradeRepository.FindAsIQueryable(x => x.GradeName == "运动馆").Select(x => new { x.Id, x.GradeName }).FirstAsync();

            if (classModel == null)
                throw new ArgumentNullException("未找到要更新得数据");
            var exist = await _classRepository.ExistsAsync(
                x => x.SchoolCode == tenantId
                    && x.ClassName == paramDto.ClassName
                    && x.GradeId == grade.Id
                    && x.Id != paramDto.ClassId);
            if (exist)
                throw new Exception("班级名称已存在");


            classModel.ClassName = paramDto.ClassName;
            using (var transaction = _classRepository.DbContext.Database.BeginTransaction())
            {
                try
                {
                    _classRepository.Update(classModel);

                    var teacherList = await _classAssocTeacherRepository.FindAsync(x => x.ClassId == paramDto.ClassId);
                    _classAssocTeacherRepository.DbContext.RemoveRange(teacherList);

                    var classAssocTeacherList = new List<S_ClassAssocTeacher>();

                    paramDto.TeacherIds.ForEach(x =>
                    {
                        classAssocTeacherList.Add(new S_ClassAssocTeacher()
                        {
                            ClassId = paramDto.ClassId,
                            TeacherId = x,
                            Creator = UserContext.Current.UserId,
                            CreateDate = DateTime.Now,
                            Modifier = UserContext.Current.UserId,
                            ModifyDate = DateTime.Now,
                        });
                    });

                    await _classAssocTeacherRepository.AddRangeAsync(classAssocTeacherList);

                    var oldStudents = await _studentRepository.FindAsync(x => x.ClassId == classModel.Id);
                    var newStudents = await _studentRepository.FindAsync(x => paramDto.studentNoList.Contains(x.StudentNo));

                    var allStudents = oldStudents.UnionBy(newStudents, s => s.Id).ToList();

                    foreach (var student in allStudents)
                    {
                        if (paramDto.studentNoList.Contains(student.StudentNo))
                        {
                            student.ClassId = classModel.Id;
                            student.OrderNo = paramDto.studentNoList.IndexOf(student.StudentNo) + 1;
                        }
                        else
                        {
                            student.ClassId = 0;
                            student.OrderNo = 0;
                        }
                    }

                    _studentRepository.UpdateRange(allStudents);
                    await _classRepository.SaveChangesAsync();

                    transaction.Commit();
                }
                catch (Exception ex)
                {
                    // 发生错误，回滚事务
                    transaction.Rollback();
                    Console.WriteLine("事务回滚：" + ex.Message);
                }
            }
        }

        /// <summary>
        /// 导入运动馆学生体测成绩
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task SportsHallImportStudentsTestData(IFormFile file)
        {
            if (file == null || file.Length <= 0)
                throw new Exception("操作失败");

            List<SportsHallImportStudentsTestDataParam> dataObjects;

            using (var fileStream = file.OpenReadStream())
            {
                dataObjects = Tool.ConvertExcelToList<SportsHallImportStudentsTestDataParam>(fileStream);
            }

            var studentNos = dataObjects.Select(x => x.StudentNo).Distinct().ToList();

            // 用一个查询一次性获取所有学生信息
            var students = await (from s in _studentRepository.DbContext.Set<S_Student>()
                                  join c in _studentRepository.DbContext.Set<S_Class>() on s.ClassId equals c.Id
                                  join g in _studentRepository.DbContext.Set<S_Grade>() on c.GradeId equals g.Id
                                  where c.SchoolCode.Equals(UserContext.Current.TenantId)
                                  select new
                                  {
                                      s.Id,
                                      s.Age,
                                      s.ClassId,
                                      c.ClassName,
                                      s.StudentName,
                                      GradeId = g.Id,
                                      g.GradeName,
                                      s.Sex,
                                      s.StudentNo
                                  }).ToListAsync();

            // 将学生信息存入字典，快速查找
            var studentsDict = students.ToDictionary(x => x.StudentNo);

            var entityList = new List<N_SportsTestValue>();

            foreach (var data in dataObjects)
            {
                if (!studentsDict.TryGetValue(data.StudentNo, out var student))
                {
                    throw new Exception($"未找到此编号为{data.StudentNo}的学生");
                }

                var timeNow = Convert.ToDateTime(data.ScoreTime);

                // 为每个学生添加多条体测数据
                if (data.BMIValue > 0)
                    entityList.Add(await AddSportsHallEnumStudentsTestData(data, SportsTestItemType.BMI, student, data.GradeId, timeNow));

                if (data.Sit_And_ReachValue > 0)
                    entityList.Add(await AddSportsHallEnumStudentsTestData(data, SportsTestItemType.Sit_And_Reach, student, data.GradeId, timeNow));

                if (data.VitalCapacityValue > 0)
                    entityList.Add(await AddSportsHallEnumStudentsTestData(data, SportsTestItemType.VitalCapacity, student, data.GradeId, timeNow));

                if (data.OneMinuteJumpRopeValue > 0)
                    entityList.Add(await AddSportsHallEnumStudentsTestData(data, SportsTestItemType.OneMinuteJumpRope, student, data.GradeId, timeNow));

                if (data.One_Minute_Sit_UpValue > 0)
                    entityList.Add(await AddSportsHallEnumStudentsTestData(data, SportsTestItemType.One_Minute_Sit_Up, student, data.GradeId, timeNow));

                if (data.StandingLongJumpValue > 0)
                    entityList.Add(await AddSportsHallEnumStudentsTestData(data, SportsTestItemType.StandingLongJump, student, data.GradeId, timeNow));
            }

            // 批量添加数据
            await _sportsTestResultRepository.AddRangeAsync(entityList);

            // 一次性保存所有修改
            await _sportsTestResultRepository.SaveChangesAsync();
        }

        public async Task<N_SportsTestValue> AddSportsHallEnumStudentsTestData(SportsHallImportStudentsTestDataParam data, SportsTestItemType type, dynamic student, int gradeId, DateTime timeNow)
        {
            var entity = new N_SportsTestValue
            {
                TeacherId = 0,
                TeacherName = "",
                DataSource = DataSource.IOT,
                ScoreTime = timeNow,
                GradeId = student.GradeId,
                ClassId = student.ClassId,
                GradeName = student.GradeName,
                ClassName = student.ClassName,
                SchoolCode = UserContext.Current.TenantId,
                Sex = student.Sex,
                StudentNo = data.StudentNo,
                StudentName = student.StudentName,
                Creator = UserContext.Current.UserId,
                CreateDate = timeNow,
                IsDisplay = false
            };

            SexType sexType = student.Sex;

            string sex = sexType == SexType.Male ? "男" : "女";

            string typeStr = type.ToString();

            // 根据测试项目类型设置对应的值
            if (type == SportsTestItemType.BMI)
            {
                entity.Value = data.BMIValue;

                // 根据测试项目查找标准
                var standard = await _healthStandardsRepository.FindFirstAsync(x =>
                    x.CategoryEnum.Equals(typeStr) &&
                    x.GradeId == gradeId &&
                    x.Sex == sexType &&
                    data.BMIValue >= x.MinValue &&
                    data.BMIValue < x.MaxValue
                );

                if (standard != null)
                {
                    entity.Score = standard.Score;
                    entity.Rank = standard.Rank;
                }

            }
            else if (type == SportsTestItemType.Sit_And_Reach)
            {
                entity.Value = data.Sit_And_ReachValue;

                // 根据测试项目查找标准
                var standard = await _healthStandardsRepository.FindFirstAsync(x =>
                    x.CategoryEnum.Equals(typeStr) &&
                    x.GradeId == gradeId &&
                    x.Sex == sexType &&
                    data.Sit_And_ReachValue >= x.MinValue &&
                    data.Sit_And_ReachValue < x.MaxValue
                );

                if (standard != null)
                {
                    entity.Score = standard.Score;
                    entity.Rank = standard.Rank;
                }
            }
            else if (type == SportsTestItemType.VitalCapacity)
            {
                entity.Value = data.VitalCapacityValue;

                // 根据测试项目查找标准
                var standard = await _healthStandardsRepository.FindFirstAsync(x =>
                    x.CategoryEnum.Equals(typeStr) &&
                    x.GradeId == gradeId &&
                    x.Sex == sexType &&
                    data.VitalCapacityValue >= x.MinValue &&
                    data.VitalCapacityValue < x.MaxValue
                );

                if (standard != null)
                {
                    entity.Score = standard.Score;
                    entity.Rank = standard.Rank;
                }
            }

            else if (type == SportsTestItemType.OneMinuteJumpRope)
            {
                entity.Value = data.OneMinuteJumpRopeValue;

                // 根据测试项目查找标准
                var standard = await _healthStandardsRepository.FindFirstAsync(x =>
                    x.CategoryEnum.Equals(typeStr) &&
                    x.GradeId == gradeId &&
                    x.Sex == sexType &&
                    data.OneMinuteJumpRopeValue >= x.MinValue &&
                    data.OneMinuteJumpRopeValue < x.MaxValue
                );

                if (standard != null)
                {
                    entity.Score = standard.Score;
                    entity.Rank = standard.Rank;
                }
            }
            else if (type == SportsTestItemType.One_Minute_Sit_Up)
            {
                entity.Value = data.One_Minute_Sit_UpValue;

                // 根据测试项目查找标准
                var standard = await _healthStandardsRepository.FindFirstAsync(x =>
                    x.CategoryEnum.Equals(typeStr) &&
                    x.GradeId == gradeId &&
                    x.Sex == sexType &&
                    data.One_Minute_Sit_UpValue >= x.MinValue &&
                    data.One_Minute_Sit_UpValue < x.MaxValue
                );

                if (standard != null)
                {
                    entity.Score = standard.Score;
                    entity.Rank = standard.Rank;
                }
            }

            else if (type == SportsTestItemType.StandingLongJump)
            {
                entity.Value = data.StandingLongJumpValue;

                // 根据测试项目查找标准
                var standard = await _healthStandardsRepository.FindFirstAsync(x =>
                    x.CategoryEnum.Equals(typeStr) &&
                    x.GradeId == gradeId &&
                    x.Sex == sexType &&
                    data.StandingLongJumpValue >= x.MinValue &&
                    data.StandingLongJumpValue < x.MaxValue
                );

                if (standard != null)
                {
                    entity.Score = standard.Score;
                    entity.Rank = standard.Rank;
                }
            }

            entity.CategoryEnum = type.ToString();
            entity.CategoryValue = (int)type;

            return entity;
        }

        /// <summary>
        /// 运动馆体测成绩分页列表
        /// </summary>
        /// <param name="paramDto"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task<PageDataDto<SportsHallStudentsTestModel>> GetSportsHallStudentsTestPageList(SportsHallStudentsTestParam paramDto)
        {
            var res = new PageDataDto<SportsHallStudentsTestModel>();

            var query = _sportsTestResultRepository.DbContext.Set<N_SportsTestValue>()
                .Where(s => s.SchoolCode == UserContext.Current.TenantId);

            // 条件过滤
            if (paramDto.StartTime.HasValue)
                query = query.Where(x => x.CreateDate >= paramDto.StartTime.Value);

            if (paramDto.EndTime.HasValue)
                query = query.Where(x => x.CreateDate <= paramDto.EndTime.Value);

            if (paramDto.ClassId.HasValue)
                query = query.Where(x => x.ClassId == paramDto.ClassId.Value);

            if (paramDto.Sex.HasValue)
                query = query.Where(x => (int)x.Sex == paramDto.Sex);

            if (!string.IsNullOrWhiteSpace(paramDto.ResultLevel))
                query = query.Where(x => x.Rank == paramDto.ResultLevel);

            // ✅ 正确分组（去掉 Id）
            var groupedQuery = query.GroupBy(x => new
            {
                x.StudentNo,
                x.StudentName,
                x.Sex,
                x.ClassName,
                x.GradeName,
                x.ScoreTime,
                x.IsDisplay
            });

            res.Total = await groupedQuery.CountAsync();

            var list = await groupedQuery
                .Select(g => new SportsHallStudentsTestModel
                {
                    // 👉 可以取组内任意一条的Id
                    Id = g.Max(x => x.Id),

                    StudentNo = g.Key.StudentNo,
                    StudentName = g.Key.StudentName,
                    SexName = g.Key.Sex.GetDescription(),

                    GradeAndClass = g.Key.GradeName + " " + g.Key.ClassName,

                    ScoreTime = g.Key.ScoreTime,
                    IsDisplay = g.Key.IsDisplay,

                    // 👇 pivot（用 Max 比 FirstOrDefault 更稳）
                    BMIValue = g.Where(x => x.CategoryValue == (int)SportsTestItemType.BMI)
                                .Max(x => (float?)x.Value) ?? 0,

                    VitalCapacityValue = g.Where(x => x.CategoryValue == (int)SportsTestItemType.VitalCapacity)
                                .Max(x => (float?)x.Value) ?? 0,

                    Sit_And_ReachValue = g.Where(x => x.CategoryValue == (int)SportsTestItemType.Sit_And_Reach)
                                .Max(x => (float?)x.Value) ?? 0,

                    OneMinuteJumpRopeValue = g.Where(x => x.CategoryValue == (int)SportsTestItemType.OneMinuteJumpRope)
                                .Max(x => (int?)x.Value) ?? 0,

                    One_Minute_Sit_UpValue = g.Where(x => x.CategoryValue == (int)SportsTestItemType.One_Minute_Sit_Up)
                                .Max(x => (int?)x.Value) ?? 0,

                    StandingLongJumpValue = g.Where(x => x.CategoryValue == (int)SportsTestItemType.StandingLongJump)
                                .Max(x => (float?)x.Value) ?? 0
                })
                .OrderByDescending(x => x.ScoreTime)
                .Skip((paramDto.PageIndex - 1) * paramDto.PageSize)
                .Take(paramDto.PageSize)
                .ToListAsync();

            res.Datas = list;

            return res;
        }

        /// <summary>
        /// 成绩推送
        /// </summary>
        /// <param name="paramDto"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task ScorePush(SportsHallStudentsTestParam paramDto)
        {
            var sql = new StringBuilder();
            sql.Append("UPDATE N_SportsTestValue SET IsDisplay = 1 WHERE SchoolCode = {0} ");

            var parameters = new List<object>
            {
                UserContext.Current.TenantId
            };

            if (paramDto.StartTime.HasValue)
            {
                sql.Append(" AND CreateDate >= {1} ");
                parameters.Add(paramDto.StartTime.Value);
            }

            if (paramDto.EndTime.HasValue)
            {
                sql.Append(" AND CreateDate <= {2} ");
                parameters.Add(paramDto.EndTime.Value);
            }

            if (paramDto.ClassId > 0)
            {
                sql.Append(" AND ClassId = {3} ");
                parameters.Add(paramDto.ClassId.Value);
            }

            if (paramDto.Sex > 0)
            {
                sql.Append(" AND Sex = {4} ");
                parameters.Add(paramDto.Sex.Value);
            }

            if (!string.IsNullOrWhiteSpace(paramDto.ResultLevel))
            {
                sql.Append(" AND Rank = {5} ");
                parameters.Add(paramDto.ResultLevel);
            }

            await _sportsTestResultRepository.DbContext.Database
                .ExecuteSqlRawAsync(sql.ToString(), parameters.ToArray());
        }

        /// <summary>
        /// 成绩修成
        /// </summary>
        /// <param name="paramDto"></param>
        /// <returns></returns>
        public async Task ScoreUpdate(SportsHallStudentsTestDataUpdateParam paramDto)
        {
            // 获取该学生每个项目的最新一条记录
            var list = await _sportsTestResultRepository.DbContext.Set<N_SportsTestValue>()
                .Where(s => s.SchoolCode == "202506170049" && s.StudentNo == paramDto.StudentNo)
                .GroupBy(x => x.CategoryValue)
                .Select(g => g.OrderByDescending(x => x.ScoreTime).FirstOrDefault())
                .ToListAsync();

            if (list == null || !list.Any())
                return; 

            foreach (var entity in list)
            {
                switch (entity.CategoryValue)
                {
                    case (int)SportsTestItemType.BMI:
                        entity.Value = paramDto.BMIValue;
                        break;
                    case (int)SportsTestItemType.VitalCapacity:
                        entity.Value = paramDto.VitalCapacityValue;
                        break;
                    case (int)SportsTestItemType.Sit_And_Reach:
                        entity.Value = paramDto.Sit_And_ReachValue;
                        break;
                    case (int)SportsTestItemType.OneMinuteJumpRope:
                        entity.Value = paramDto.OneMinuteJumpRopeValue;
                        break;
                    case (int)SportsTestItemType.One_Minute_Sit_Up:
                        entity.Value = paramDto.One_Minute_Sit_UpValue;
                        break;
                    case (int)SportsTestItemType.StandingLongJump:
                        entity.Value = paramDto.StandingLongJumpValue;
                        break;
                }
            }

            _sportsTestResultRepository.UpdateRange(list);

            await _sportsTestResultRepository.DbContext.SaveChangesAsync();
        }
    }
}