using AutoMapper;
using Microsoft.EntityFrameworkCore;
using VOL.Entity.DomainModels.XinWei;
using VOL.Entity.Enum;
using YD_XinWei.Api.Context;
using YD_XinWei.Api.Services.Interface;
using YD_XinWei.Api.SmartSportsEntitys;
using YD_XinWei.Api.Utilities;
using YD_XinWei.Commons.Dto.Common;
using YD_XinWei.Commons.Dto.LargeScreen;
using YD_XinWei.Commons.Enum;
using YD_XinWei.Commons.MemoryCaches;

namespace YD_XinWei.Api.Services.Impl
{
    /// <summary>
    /// 大屏服务
    /// </summary>
    public class LargeScreenService : ILargeScreenService
    {
        public SmartSportsContext _sportsContext;
        private readonly IMapper _mapper;
        private readonly ICacheService _caching;

        /// <summary>
        /// 构造
        /// </summary>
        /// <param name="sportsContext"></param>
        /// <param name="mapper"></param>
        public LargeScreenService(SmartSportsContext sportsContext, IMapper mapper, ICacheService caching)
        {
            _sportsContext = sportsContext;
            _mapper = mapper;
            _caching = caching;
        }

        /// <summary>
        /// 获取项目列表
        /// </summary>
        /// <param name="orgId"></param>
        /// <returns></returns>
        public async Task<List<SportsProjectListDto>> SportsProjectList(int orgId)
        {
            var testingProjectKey = $"TestingProject_{orgId}";

            var res = _caching.Get<List<SportsProjectListDto>>(testingProjectKey);

            if (res == null || res.Count == 0)
            {
                res = await _sportsContext.XW_TestingProject.Where(x => x.OrgId == orgId)
                    .Select(x => new SportsProjectListDto()
                    {
                        ProjectId = x.ProjectId,
                        ProjectName = x.ProjectName,
                        CategoryValue = x.CategoryValue,
                        CategoryEnum = x.CategoryEnum,
                        Unit = ((SportsTestItemType)x.CategoryValue).GetUnit()
                    }).ToListAsync();
            }

            return res;
        }

        /// <summary>
        /// 项目成绩大屏数据
        /// </summary>
        /// <param name="orgId"></param>
        /// <returns></returns>
        public async Task<LargeScreenDto> ItemResultLargeScreenData(int orgId)
        {
            var res = new LargeScreenDto();

            var schoolKeyKey = $"School_{orgId}";

            var schoolCode = _caching.Get(schoolKeyKey);

            if (string.IsNullOrWhiteSpace(schoolCode))
            {
                schoolCode = await _sportsContext.School.Where(x => x.Id == orgId).Select(x => x.SchoolCode).FirstAsync();
                _caching.Add(schoolKeyKey, schoolCode);
            }

            var sportsTestDataKey = $"SportsTestData_{schoolCode}";
            var studentListKey = $"StudentList_{schoolCode}";

            var studentList = _caching.Get<List<StudentListDto>>(studentListKey);

            if (studentList == null || studentList.Count == 0)
            {
                studentList = await _sportsContext.Student.Where(x => x.SchoolCode == schoolCode).Select(x => new StudentListDto
                {
                    StudentNo = x.StudentNo,
                    Sex = x.Sex,
                    Photo = x.Photo ?? ""
                }).ToListAsync();
                _caching.AddObject(studentListKey, studentList, 3600);
            }

            res.BasicInfo.FemaleCount = studentList.Count(x => x.Sex == 2);
            res.BasicInfo.MaleCount = studentList.Count(x => x.Sex == 1);

            var sportsTestData = _caching.Get<List<SportsTestDataDto>>(sportsTestDataKey);

            if (sportsTestData == null || sportsTestData.Count == 0)
            {
                sportsTestData = await _sportsContext.SportsTestValue.Where(x => x.SchoolCode == schoolCode && x.DataSource == DataSource.XW)
                    .Select(x => new SportsTestDataDto()
                    {
                        SchoolCode = x.SchoolCode,
                        CategoryValue = x.CategoryValue,
                        ClassId = x.ClassId,
                        ClassName = x.ClassName,
                        GradeId = x.GradeId,
                        GradeName = x.GradeName,
                        TeacherId = x.TeacherId,
                        StudentNo = x.StudentNo,
                        StudentName = x.StudentName,
                        Sex = x.Sex,
                        ScoreTime = x.ScoreTime,
                        Height = x.Height,
                        Weight = x.Weight,
                        Value = x.Value,
                        Score = x.Score,
                        Rank = x.Rank
                    }).ToListAsync();
                _caching.AddObject(sportsTestDataKey, sportsTestData, 3600);
            }

            var bestScoreData = sportsTestData
                .GroupBy(x => x.StudentNo)
                .Select(g => g.OrderByDescending(x => x.Score).First())
                .ToList();

            var projectResults = bestScoreData
                .GroupBy(x => x.CategoryValue)
                .Select(g => new ItemDataDto
                {
                    CategoryValue = g.Key,
                    // 优良率计算：分数 > 80 的人数 ÷ 总人数
                    ExcellentRate = g.Count(x => x.Score > 80) * 100.0 / Math.Max(g.Count(), 1),

                    // 男生前十名
                    MaleRankList = g.Where(x => x.Sex == 1)
                                    .OrderByDescending(x => x.Value)
                                    .Take(10)
                                    .Select((x, index) => new StudentScoreRankingDto
                                    {
                                        Rank = index + 1,
                                        StudentNo = x.StudentNo,
                                        StudentName = x.StudentName,
                                        Value = x.Value
                                    }).ToList(),

                    // 女生前十名
                    FemaleRankList = g.Where(x => x.Sex == 2)
                                      .OrderByDescending(x => x.Value)
                                      .Take(10)
                                      .Select((x, index) => new StudentScoreRankingDto
                                      {
                                          Rank = index + 1,
                                          StudentNo = x.StudentNo,
                                          StudentName = x.StudentName,
                                          Value = x.Value
                                      }).ToList()
                })
                .ToList();

            res.ItemDatalist = projectResults;


            var classListKey = $"ClassList_{schoolCode}";

            var classList = _caching.Get<List<S_Class>>(classListKey);

            if (classList == null || classList.Count == 0)
            {
                classList = await _sportsContext.Class.Where(x => x.SchoolCode == schoolCode).ToListAsync();
                _caching.AddObject(classListKey, classList, 3600);
            }

            var classRankingList = sportsTestData
                .GroupBy(x => new { x.ClassId })
                .Select(g => new ClassSportsRankingDto
                {
                    ClassId = g.Key.ClassId,
                    ClassName = classList.Where(c => c.Id == g.Key.ClassId).Select(x => $"{x.GradeName}-{x.ClassName}").FirstOrDefault() ?? "",
                    Count = g.Count()
                })
                .OrderByDescending(x => x.Count)
                .Take(5)
                .Select((x, index) =>
                {
                    x.Rank = index + 1;
                    return x;
                })
                .ToList();

            res.ClassSportsRankList = classRankingList;

            var testingProjectKey = $"TestingProject_{orgId}";

            var testingProjects = _caching.Get<List<SportsProjectListDto>>(testingProjectKey) ?? new List<SportsProjectListDto>();
            var projectNameDict = testingProjects.ToDictionary(t => t.CategoryValue, t => t.ProjectName);

            var studentPhotoDict = studentList.Where(s => !string.IsNullOrEmpty(s.StudentNo)).ToDictionary(s => s.StudentNo, s => s.Photo ?? string.Empty);

            var latestPerStudent = sportsTestData
                .GroupBy(x => x.StudentNo)
                .Select(g => g.OrderByDescending(x => x.ScoreTime).First())
                .ToList();

            var realTimeResults = latestPerStudent
                 .OrderByDescending(x => x.ScoreTime)
                 .Take(50)
                 .Select(x => new ItemRealTimeResultDto
                 {
                     StudentNo = x.StudentNo,
                     StudentName = x.StudentName,
                     Photo = studentPhotoDict.TryGetValue(x.StudentNo, out var photo) ? photo : string.Empty,
                     GradeAndClassName = $"{x.GradeName}-{x.ClassName}",
                     ProjectName = projectNameDict.TryGetValue(x.CategoryValue, out var projectName) ? projectName : string.Empty,
                     Value = x.Value,
                     Score = x.Score,
                     Rank = x.Rank ?? "不及格",
                     ScoreTime = x.ScoreTime.ToString("yyyy-MM-dd HH:mm:ss")
                 })
                 .ToList();

            res.ItemRealTimeResultList = realTimeResults;

            return res;
        }
    }
}