using YD_Event.Application.Event.Dtos;
using YD_Event.Core.Domain.Export;
using YD_Event.Core.Entities;
using YD_Event.Core.Extensions;
using MiniExcelLibs;
using SqlSugar;
using OfficeOpenXml;
using OfficeOpenXml.Style;
using System.Drawing;

namespace YD_Event.Application.Event;

/// <summary>
    /// 赛事编排服务
    /// </summary>
    public class EventArrangementService : BaseService<YD_Event.Core.Entities.Project>, ITransient
    {
        private readonly ISqlSugarRepository<EventProject> _eventProjectRepository;
        private readonly ISqlSugarRepository<YD_Event.Core.Entities.Project> _projectRepository;
        private readonly ISqlSugarRepository<ProjectGroup> _groupRepository;
        private readonly ISqlSugarRepository<EventRegistrationPerson> _personRepository;
        private readonly ISqlSugarRepository<EventRegistration> _registrationRepository;
        private readonly ISqlSugarRepository<EventInfo> _eventInfoRepository;
        private readonly ISqlSugarRepository<YD_Event.Core.Entities.AppUser> _appUserRepository;
        private readonly ISqlSugarRepository<MerchantCertification> _merchantCertificationRepository;

        public EventArrangementService(
            ISqlSugarRepository<EventProject> eventProjectRepository,
            ISqlSugarRepository<YD_Event.Core.Entities.Project> projectRepository,
            ISqlSugarRepository<ProjectGroup> groupRepository,
            ISqlSugarRepository<EventRegistrationPerson> personRepository,
            ISqlSugarRepository<EventRegistration> registrationRepository,
            ISqlSugarRepository<EventInfo> eventInfoRepository,
            ISqlSugarRepository<YD_Event.Core.Entities.AppUser> appUserRepository,
            ISqlSugarRepository<MerchantCertification> merchantCertificationRepository) : base(projectRepository)
        {
            _eventProjectRepository = eventProjectRepository;
            _projectRepository = projectRepository;
            _groupRepository = groupRepository;
            _personRepository = personRepository;
            _registrationRepository = registrationRepository;
            _eventInfoRepository = eventInfoRepository;
            _appUserRepository = appUserRepository;
            _merchantCertificationRepository = merchantCertificationRepository;
        }

    /// <summary>
    /// 格式化时长显示（符号格式：X'X"）
    /// </summary>
    private string FormatDurationSymbol(int totalSeconds)
    {
        if (totalSeconds <= 0)
        {
            return "0'0\"";
        }

        var hours = totalSeconds / 3600;
        var remainingSecondsAfterHours = totalSeconds % 3600;
        var minutes = remainingSecondsAfterHours / 60;
        var seconds = remainingSecondsAfterHours % 60;

        if (hours == 0)
        {
            if (seconds == 0)
            {
                return $"{minutes}'";
            }
            else
            {
                var paddedSeconds = seconds.ToString().PadLeft(2, '0');
                return $"{minutes}'{paddedSeconds}\"";
            }
        }
        else
        {
            var result = $"{hours}h";
            if (minutes > 0 || seconds > 0)
            {
                result += $"{minutes}'";
                if (seconds > 0)
                {
                    var paddedSeconds = seconds.ToString().PadLeft(2, '0');
                    result += $"{paddedSeconds}\"";
                }
            }
            return result;
        }
    }

    /// <summary>
    /// 获取编排项目列表
    /// </summary>
    [DisplayName("获取编排项目列表")]
    public async Task<List<ArrangementProjectListOutput>> GetList(long eventId)
    {
        var eventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == eventId);
        var projectIds = eventProjects.Select(x => x.ProjectId).Distinct().ToList();
        var projects = await _projectRepository.GetListAsync(x => projectIds.Contains(x.Id));

        // 按照 SortIndex 对 projects 排序
        var sortedProjects = projects.OrderBy(x => x.SortIndex).ToList();

        var groups = await _groupRepository.GetListAsync(x => projectIds.Contains(x.ProjectId));

        // 统计各组别报名人数（统计所有非取消状态的报名，并且只统计运动员
        var counts = await _personRepository.AsQueryable()
            .InnerJoin<EventRegistration>((p, r) => p.RegistrationId == r.Id)
            .Where((p, r) => r.EventId == eventId
                // 线上支付只显示已支付(1)，线下支付显示待审核(0)和已支付(1)
                && ((r.PaymentMethod == 2 && r.PaymentStatus == 1) || (r.PaymentMethod == 1 && (r.PaymentStatus == 0 || r.PaymentStatus == 1)))
                && !p.DeleteMark // 排除已删除的人员
                && p.PersonType == PersonType.Athlete) // 只统计运动员
            .GroupBy((p, r) => new { p.ProjectId, p.GroupName })
            .Select((p, r) => new { p.ProjectId, p.GroupName, Count = SqlFunc.AggregateCount(p.Id) })
            .ToListAsync();

        // 获取所有相关的人员和报名记录（用于统计团队数）
        var personWithTeam = await _personRepository.AsQueryable()
            .InnerJoin<EventRegistration>((p, r) => p.RegistrationId == r.Id)
            .Where((p, r) => r.EventId == eventId
                // 线上支付只显示已支付(1)，线下支付显示待审核(0)和已支付(1)
                && ((r.PaymentMethod == 2 && r.PaymentStatus == 1) || (r.PaymentMethod == 1 && (r.PaymentStatus == 0 || r.PaymentStatus == 1)))
                && !p.DeleteMark
                && p.PersonType == PersonType.Athlete
                && r.TeamName != null)
            .Select((p, r) => new { p.ProjectId, p.GroupName, r.TeamName, p.RegistrationItemId })
            .ToListAsync();

        // 在内存中统计团队数（增加 RegistrationItemId 作为分组条件，与 Preview 方法保持一致）
        var teamCounts = personWithTeam
            .GroupBy(x => new { x.ProjectId, x.GroupName, x.TeamName, x.RegistrationItemId })
            .GroupBy(g => new { g.Key.ProjectId, g.Key.GroupName })
            .Select(g => new { g.Key.ProjectId, g.Key.GroupName, Count = g.Count() })
            .ToList();

        var result = new List<ArrangementProjectListOutput>();
        // 按照排序后的项目顺序处理
        foreach (var proj in sortedProjects)
        {
            var eventProj = eventProjects.FirstOrDefault(x => x.ProjectId == proj.Id);
            if (eventProj == null) continue;

            var dto = new ArrangementProjectListOutput
            {
                ProjectId = eventProj.Id,
                ProjectName = proj.Name,
                ProjectType = proj.ProjectType.Description(),
                DurationSeconds = proj.GetTotalDurationInSeconds(),
                VenueCount = proj.VenueCount,
                SortIndex = proj.SortIndex,
                Groups = new List<ArrangementGroupDto>()
            };

            var projGroups = groups.Where(g => g.ProjectId == proj.Id).ToList();
            foreach (var group in projGroups)
            {
                int displayCount;
                if (proj.IsTeamProject())
                {
                    // 团队项目：显示团队数
                    var teamCountObj = teamCounts.FirstOrDefault(tc => tc.ProjectId == eventProj.Id && tc.GroupName == group.GroupName);
                    displayCount = teamCountObj?.Count ?? 0;
                }
                else
                {
                    // 个人项目：显示人数
                    var countObj = counts.FirstOrDefault(c => c.ProjectId == eventProj.Id && c.GroupName == group.GroupName);
                    displayCount = countObj?.Count ?? 0;
                }
                
                dto.Groups.Add(new ArrangementGroupDto
                {
                    GroupName = group.GroupName,
                    ParticipantCount = displayCount
                });
            }

            // 根据项目类型计算总时长
            int venueCount = proj.VenueCount > 0 ? proj.VenueCount : 1;
            
            // 重新计算总参与人数（用于后续判断）
            int totalParticipants = 0;
            foreach (var group in projGroups)
            {
                var countObj = counts.FirstOrDefault(c => c.ProjectId == eventProj.Id && c.GroupName == group.GroupName);
                totalParticipants += countObj?.Count ?? 0;
            }
            
            int totalTeams = 0;

            // 如果是团队项目，计算团队总数
            if (proj.IsTeamProject())
            {
                totalTeams = teamCounts
                    .Where(tc => tc.ProjectId == eventProj.Id)
                    .Sum(tc => tc.Count);
            }

            // 检查是否有有效参与者：个人项目检查报名人数，团队项目检查团队数
            bool hasValidParticipants;
            if (proj.IsTeamProject())
            {
                hasValidParticipants = totalTeams > 0;
            }
            else
            {
                hasValidParticipants = totalParticipants > 0;
            }

            // 如果没有有效参与者，跳过这个项目
            if (!hasValidParticipants)
            {
                continue;
            }

            int totalDurationSeconds;
            if (proj.IsTeamProject())
            {
                // 团队项目：(队伍数 ÷ 场地数) × 项目时长
                int teamCount = totalTeams > 0 ? totalTeams : 1;
                int rounds = (int)Math.Ceiling((double)teamCount / venueCount);
                totalDurationSeconds = rounds * proj.GetTotalDurationInSeconds();
            }
            else
            {
                // 个人项目：(报名人数 ÷ 场地数) × 项目时长
                int participantCount = totalParticipants > 0 ? totalParticipants : 1;
                int rounds = (int)Math.Ceiling((double)participantCount / venueCount);
                totalDurationSeconds = rounds * proj.GetTotalDurationInSeconds();
            }

            // 设置总时长秒数和分钟数
            dto.TotalDurationSeconds = totalDurationSeconds;
            dto.TotalDurationMinutes = (int)Math.Ceiling((double)totalDurationSeconds / 60);
            dto.TotalTeams = totalTeams;

            result.Add(dto);
        }
        return result;
    }

    /// <summary>
    /// 更新编排设置
    /// </summary>
    [UnitOfWork]
    [DisplayName("更新编排设置")]
    public async Task Update(ArrangementUpdateInput input)
    {
        var eventProjectIds = input.Settings.Select(x => x.ProjectId).ToList();
        var eventProjects = await _eventProjectRepository.GetListAsync(x => eventProjectIds.Contains(x.Id));

        foreach (var setting in input.Settings)
        {
            var ep = eventProjects.FirstOrDefault(x => x.Id == setting.ProjectId);
            if (ep != null)
            {
                var project = await _projectRepository.GetByIdAsync(ep.ProjectId);
                if (project != null)
                {
                    project.VenueCount = setting.VenueCount;
                    project.SortIndex = setting.SortIndex;
                    await _projectRepository.UpdateAsync(project);
                }
            }
        }
    }

    /// <summary>
    /// 编排预览
    /// </summary>
    [DisplayName("编排预览")]
    public async Task<List<ArrangementPreviewOutput>> Preview(long eventId)
    {
        // 1. 获取项目列表和统计数据
        var eventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == eventId);
        var projectIds = eventProjects.Select(x => x.ProjectId).Distinct().ToList();
        var projects = await _projectRepository.GetListAsync(x => projectIds.Contains(x.Id));

        // 按照 SortIndex 对 projects 排序
        var sortedProjects = projects.OrderBy(x => x.SortIndex).ToList();
        var groups = await _groupRepository.GetListAsync(x => projectIds.Contains(x.ProjectId));

        // 统计各组别报名人数
        var counts = await _personRepository.AsQueryable()
            .InnerJoin<EventRegistration>((p, r) => p.RegistrationId == r.Id)
            .Where((p, r) => r.EventId == eventId
                // 线上支付只显示已支付(1)，线下支付显示待审核(0)和已支付(1)
                && ((r.PaymentMethod == 2 && r.PaymentStatus == 1) || (r.PaymentMethod == 1 && (r.PaymentStatus == 0 || r.PaymentStatus == 1)))
                && !p.DeleteMark
                && p.PersonType == PersonType.Athlete)
            .GroupBy((p, r) => new { p.ProjectId, p.GroupName })
            .Select((p, r) => new { p.ProjectId, p.GroupName, Count = SqlFunc.AggregateCount(p.Id) })
            .ToListAsync();

        // 获取团队数
        var personWithTeam = await _personRepository.AsQueryable()
            .InnerJoin<EventRegistration>((p, r) => p.RegistrationId == r.Id)
            .Where((p, r) => r.EventId == eventId
                // 线上支付只显示已支付(1)，线下支付显示待审核(0)和已支付(1)
                && ((r.PaymentMethod == 2 && r.PaymentStatus == 1) || (r.PaymentMethod == 1 && (r.PaymentStatus == 0 || r.PaymentStatus == 1)))
                && !p.DeleteMark
                && p.PersonType == PersonType.Athlete
                && r.TeamName != null)
            .Select((p, r) => new { p.ProjectId, p.GroupName, r.TeamName, p.RegistrationItemId })
            .ToListAsync();

        var teamCounts = personWithTeam
            .GroupBy(x => new { x.ProjectId, x.GroupName, x.TeamName, x.RegistrationItemId })
            .GroupBy(g => new { g.Key.ProjectId, g.Key.GroupName })
            .Select(g => new { g.Key.ProjectId, g.Key.GroupName, Count = g.Count() })
            .ToList();

        var result = new List<ArrangementPreviewOutput>();

        // 2. 生成排期 - 按照排序后的项目顺序处理
        foreach (var proj in sortedProjects)
        {
            var eventProj = eventProjects.FirstOrDefault(x => x.ProjectId == proj.Id);
            if (eventProj == null) continue;

            int venueCount = proj.VenueCount > 0 ? proj.VenueCount : 1;

            // 计算项目总时长（在查询前计算，避免在SQL中使用C#方法）
            int projTotalDuration = proj.GetTotalDurationInSeconds();
            
            // 第一步：先查询主要数据和相关的 MerchantCertificationId
            var basicPersons = await _personRepository.AsQueryable()
                .InnerJoin<EventRegistration>((p, r) => p.RegistrationId == r.Id)
                .Where((p, r) => p.ProjectId == eventProj.Id
                    // 线上支付只显示已支付(1)，线下支付显示待审核(0)和已支付(1)
                    && ((r.PaymentMethod == 2 && r.PaymentStatus == 1) || (r.PaymentMethod == 1 && (r.PaymentStatus == 0 || r.PaymentStatus == 1)))
                    && !p.DeleteMark
                    && p.PersonType == PersonType.Athlete)
                .OrderBy(p => p.GroupName)
                .OrderBy(p => p.Id)
                .Select((p, r) => new {
                    Id = p.Id,
                    RegistrationItemId = p.RegistrationItemId,
                    p.UserId,
                    p.Name,
                    p.GroupName,
                    r.TeamName,
                    r.MerchantCertificationId,
                    Duration = projTotalDuration
                })
                .ToListAsync();

            // 第二步：收集所有需要查询的 MerchantCertificationId
            var merchantCertIds = basicPersons
                .Where(x => x.MerchantCertificationId.HasValue)
                .Select(x => x.MerchantCertificationId.Value)
                .Distinct()
                .ToList();

            // 第三步：批量查询 MerchantCertification
            Dictionary<long, MerchantCertification> merchantDict = new Dictionary<long, MerchantCertification>();
            if (merchantCertIds.Any())
            {
                var merchants = await _merchantCertificationRepository.GetListAsync(x => merchantCertIds.Contains(x.Id));
                merchantDict = merchants.ToDictionary(x => x.Id, x => x);
            }

            // 第四步：在内存中合并数据
            var persons = basicPersons.Select(bp => new {
                bp.Id,
                bp.RegistrationItemId,
                bp.UserId,
                bp.Name,
                bp.GroupName,
                bp.TeamName,
                MerchantName = bp.MerchantCertificationId.HasValue && merchantDict.ContainsKey(bp.MerchantCertificationId.Value) 
                    ? merchantDict[bp.MerchantCertificationId.Value].MerchantName 
                    : null,
                AuditStatus = bp.MerchantCertificationId.HasValue && merchantDict.ContainsKey(bp.MerchantCertificationId.Value) 
                    ? merchantDict[bp.MerchantCertificationId.Value].AuditStatus 
                    : (AuditStatus?)null,
                bp.Duration
            }).ToList();

            if (!persons.Any()) continue;

            // 计算项目总时长
            int totalParticipants = 0;
            var projGroups = groups.Where(g => g.ProjectId == proj.Id).ToList();
            foreach (var group in projGroups)
            {
                var countObj = counts.FirstOrDefault(c => c.ProjectId == eventProj.Id && c.GroupName == group.GroupName);
                totalParticipants += countObj?.Count ?? 0;
            }

            int totalTeams = 0;
            if (proj.IsTeamProject())
            {
                totalTeams = teamCounts
                    .Where(tc => tc.ProjectId == eventProj.Id)
                    .Sum(tc => tc.Count);
            }

            int projectTotalDurationSeconds;
            if (proj.IsTeamProject())
            {
                int teamCount = totalTeams > 0 ? totalTeams : 1;
                int rounds = (int)Math.Ceiling((double)teamCount / venueCount);
                projectTotalDurationSeconds = rounds * proj.GetTotalDurationInSeconds();
            }
            else
            {
                int participantCount = totalParticipants > 0 ? totalParticipants : 1;
                int rounds = (int)Math.Ceiling((double)participantCount / venueCount);
                projectTotalDurationSeconds = rounds * proj.GetTotalDurationInSeconds();
            }

            string projectTotalDuration = FormatDurationSymbol(projectTotalDurationSeconds);

            // 分组逻辑
            int currentRound = 1;
            int currentVenue = 1;

            if (proj.IsTeamProject())
            {
                // 团队项目：按团队分组，同一团队的运动员姓名用逗号分隔
                // 增加 RegistrationItemId 作为分组条件，确保同一条报名记录的多个小组被正确区分
                var teamsGroup = persons
                    .GroupBy(p => new { p.GroupName, p.TeamName, p.RegistrationItemId })
                    .OrderBy(g => g.Key.GroupName)
                    .ThenBy(g => g.Key.TeamName)
                    .ThenBy(g => g.Key.RegistrationItemId);

                foreach (var teamGroup in teamsGroup)
                {
                    var athleteNames = teamGroup.Select(p => p.Name).Distinct().OrderBy(n => n).ToList();
                    string combinedAthleteNames = string.Join(", ", athleteNames);

                    // 获取团队中第一个人的认证信息作为团队单位信息
                    var firstPerson = teamGroup.First();
                    string displayUnitName = GetDisplayUnitName(firstPerson);

                    result.Add(new ArrangementPreviewOutput
                    {
                        RegistrationItemId = firstPerson.RegistrationItemId, // 团队项目保持使用 EventRegistrationItem.Id
                        TimeRange = $"{proj.GetTotalDurationInSeconds()}''",
                        ProjectName = proj.Name,
                        ProjectType = proj.ProjectType.Description(),
                        GroupName = teamGroup.Key.GroupName,
                        TeamName = teamGroup.Key.TeamName,
                        AthleteName = combinedAthleteNames,
                        UnitName = displayUnitName,
                        SessionIndex = currentRound,
                        VenueIndex = currentVenue,
                        ProjectTotalDurationSeconds = projectTotalDurationSeconds,
                        ProjectTotalDuration = projectTotalDuration
                    });

                    currentVenue++;
                    if (currentVenue > venueCount)
                    {
                        currentVenue = 1;
                        currentRound++;
                    }
                }
            }
            else
            {
                // 个人项目：根据认证状态显示单位信息
                foreach (var person in persons)
                {
                    string displayUnitName = GetDisplayUnitName(person);

                    result.Add(new ArrangementPreviewOutput
                    {
                        RegistrationItemId = person.Id, // 个人项目使用 EventRegistrationPerson.Id
                        TimeRange = $"{proj.GetTotalDurationInSeconds()}''",
                        ProjectName = proj.Name,
                        ProjectType = proj.ProjectType.Description(),
                        GroupName = person.GroupName,
                        TeamName = person.TeamName,
                        AthleteName = person.Name,
                        UnitName = displayUnitName,
                        SessionIndex = currentRound,
                        VenueIndex = currentVenue,
                        ProjectTotalDurationSeconds = projectTotalDurationSeconds,
                        ProjectTotalDuration = projectTotalDuration
                    });

                    currentVenue++;
                    if (currentVenue > venueCount)
                    {
                        currentVenue = 1;
                        currentRound++;
                    }
                }
            }
        }
        
        return result;
    }

    /// <summary>
    /// 根据单位认证状态获取显示的单位名称
    /// </summary>
    private string GetDisplayUnitName<T>(T personData) where T : class
    {
        // 使用反射获取属性值
        var merchantNameProp = personData.GetType().GetProperty("MerchantName");
        var auditStatusProp = personData.GetType().GetProperty("AuditStatus");
        var teamNameProp = personData.GetType().GetProperty("TeamName");

        string? merchantName = merchantNameProp?.GetValue(personData) as string;
        var auditStatusValue = auditStatusProp?.GetValue(personData);
        AuditStatus? auditStatus = null;
        
        if (auditStatusValue != null && auditStatusValue is AuditStatus status)
        {
            auditStatus = status;
        }
        
        string? teamName = teamNameProp?.GetValue(personData) as string;

        // 优先使用认证通过的单位名称
        if (!string.IsNullOrEmpty(merchantName) && auditStatus == AuditStatus.Pass)
        {
            return merchantName;
        }

        // 如果没有认证或认证未通过，使用团队名称
        return teamName ?? "";
    }
    
    /// <summary>
    /// 导出编排
    /// </summary>
    [DisplayName("导出编排")]
    public async Task<byte[]> Export(long eventId)
    {
        var eventInfo = await _eventInfoRepository.GetFirstAsync(x => x.Id == eventId);
        var data = await Preview(eventId);
        
        var exporter = new ArrangementExporter(data, eventInfo);
        return await exporter.ExportAsync();
    }

    /// <summary>
    /// 编排导出器
    /// </summary>
    private class ArrangementExporter : ExcelExportBase
    {
        private readonly List<ArrangementPreviewOutput> _data;
        private readonly EventInfo _eventInfo;

        public ArrangementExporter(List<ArrangementPreviewOutput> data, EventInfo eventInfo)
        {
            _data = data ?? new List<ArrangementPreviewOutput>();
            _eventInfo = eventInfo;
        }

        public override async Task<byte[]> ExportAsync()
        {
            CreateWorksheet("编排表");

            // 第一行：赛事标题（合并单元格 A1:I1）
            var titleColor = Color.FromArgb(255, 217, 179);
            SetMergeTitle(_eventInfo?.EventName ?? "赛事编排表", 1, 1, 1, 9, titleColor, 14);

            // 第二行：列标题
            var headers = new[] { "报名ID", "时间", "参赛项目", "参赛组别", "参赛队伍", "运动员姓名", "单位", "场次", "场地" };
            var headerColor = Color.FromArgb(204, 255, 204);
            SetHeaders(headers, 2, headerColor, 11);

            // 设置第1列为文本格式，防止科学计数法显示
            for (int r = 3; r <= _data.Count + 2; r++)
            {
                Worksheet.Cells[r, 1].Style.Numberformat.Format = "@"; // @符号表示文本格式
            }

            // 填充数据行
            var alternateBgColor = Color.FromArgb(240, 255, 240);
            
            // 按项目分组处理，合并时间列（时间列现在是第2列）
            string currentProjectName = null;
            int projectStartRow = 0;
            
            for (int i = 0; i < _data.Count; i++)
            {
                var item = _data[i];
                int rowIndex = i + 3;

                // 如果是新项目或最后一行，合并前面的项目时间列
                if (currentProjectName != item.ProjectName)
                {
                    // 如果不是第一个项目，合并前一个项目的时间列
                    if (currentProjectName != null && projectStartRow > 0 && i - 1 >= 0)
                    {
                        int mergeEndRow = (i - 1) + 3;
                        if (mergeEndRow > projectStartRow)
                        {
                            var range = Worksheet.Cells[projectStartRow, 2, mergeEndRow, 2];
                            range.Merge = true;
                            // 设置时间列居中对齐
                            for (int r = projectStartRow; r <= mergeEndRow; r++)
                            {
                                Worksheet.Cells[r, 2].Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
                                Worksheet.Cells[r, 2].Style.VerticalAlignment = ExcelVerticalAlignment.Center;
                            }
                        }
                    }
                    
                    currentProjectName = item.ProjectName;
                    projectStartRow = rowIndex;
                    
                    // 设置项目总时长
                    Worksheet.Cells[rowIndex, 2].Value = item.ProjectTotalDuration ?? "";
                }
                else
                {
                    // 同一项目的其他行不设置时间值（合并后会自动应用）
                }

                // 设置所有单元格值，确保没有 null 值
                // 将报名项目唯一码转换为字符串格式，防止科学计数法
                Worksheet.Cells[rowIndex, 1].Value = item.RegistrationItemId.ToString();
                Worksheet.Cells[rowIndex, 3].Value = item.ProjectName ?? "";
                Worksheet.Cells[rowIndex, 4].Value = item.GroupName ?? "";
                Worksheet.Cells[rowIndex, 5].Value = item.TeamName ?? "";
                Worksheet.Cells[rowIndex, 6].Value = item.AthleteName ?? "";
                Worksheet.Cells[rowIndex, 7].Value = item.UnitName ?? "";
                Worksheet.Cells[rowIndex, 8].Value = item.SessionIndex;
                Worksheet.Cells[rowIndex, 9].Value = item.VenueIndex;

                SetDataRowStyle(rowIndex, 9, alternateBgColor, i % 2 == 1);
            }

            // 处理最后一个项目的合并
            if (currentProjectName != null && projectStartRow > 0 && _data.Count > 0)
            {
                int mergeEndRow = (_data.Count - 1) + 3;
                if (mergeEndRow > projectStartRow)
                {
                    var range = Worksheet.Cells[projectStartRow, 2, mergeEndRow, 2];
                    range.Merge = true;
                    // 设置时间列居中对齐
                    for (int r = projectStartRow; r <= mergeEndRow; r++)
                    {
                        Worksheet.Cells[r, 2].Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
                        Worksheet.Cells[r, 2].Style.VerticalAlignment = ExcelVerticalAlignment.Center;
                    }
                }
            }

            // 设置列宽
            var widths = new double[] { 12, 12, 18, 15, 25, 15, 20, 8, 8 };
            SetColumnWidths(widths);

            // 设置行高
            SetRowHeight(1, 30);
            SetRowHeight(2, 25);

            // 冻结首行和首列
            FreezePanes(3, 1);

            return await GetAsByteArrayAsync();
        }
    }
}