using YD_Event.Application.Event.Dtos;
using YD_Event.Application.Project.Dtos;
using YD_Event.Core.Entities;
using YD_Event.Core.Enum;
using Easy.Core;
using SqlSugar;
using Mapster;

namespace YD_Event.Application.Event;

/// <summary>
/// 赛事管理服务
/// </summary>
public class EventService : BaseService<EventInfo>, ITransient
{
    private readonly ISqlSugarRepository<EventInfo> _repository;
    private readonly ISqlSugarRepository<EventUnit> _unitRepository;
    private readonly ISqlSugarRepository<SysProvince> _provinceRepository;
    private readonly ISqlSugarRepository<SysCity> _cityRepository;
    private readonly ISqlSugarRepository<SysDistrict> _districtRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Project> _projectRepository;
    private readonly ISqlSugarRepository<EventProject> _eventProjectRepository;
    private readonly ISqlSugarRepository<EventProjectGroup> _eventProjectGroupRepository;
    private readonly ISqlSugarRepository<ProjectGroup> _projectGroupRepository;
    private readonly ISqlSugarRepository<EventRegistrationLimit> _registrationLimitRepository;
    private readonly ISqlSugarRepository<EventProjectRegistrationLimit> _projectLimitRepository;
    private readonly ISqlSugarRepository<EventFeeConfig> _feeConfigRepository;
    private readonly ISqlSugarRepository<EventRegistration> _registrationRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Merchant> _merchantRepository;
    private readonly IIdGenerator _idGenerator;
    private readonly YD_Event.Application.Menu.SysMenuService _sysMenuService;
    private readonly YD_Event.Application.Auth.AuthManager _authManager;
    private readonly EventRuleSnapshotService _ruleSnapshotService;

    public EventService(
        ISqlSugarRepository<EventInfo> repository,
        ISqlSugarRepository<EventUnit> unitRepository,
        ISqlSugarRepository<SysProvince> provinceRepository,
        ISqlSugarRepository<SysCity> cityRepository,
        ISqlSugarRepository<SysDistrict> districtRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Project> projectRepository,
        ISqlSugarRepository<EventProject> eventProjectRepository,
        ISqlSugarRepository<EventProjectGroup> eventProjectGroupRepository,
        ISqlSugarRepository<ProjectGroup> projectGroupRepository,
        ISqlSugarRepository<EventRegistrationLimit> registrationLimitRepository,
        ISqlSugarRepository<EventProjectRegistrationLimit> projectLimitRepository,
        ISqlSugarRepository<EventFeeConfig> feeConfigRepository,
        ISqlSugarRepository<EventRegistration> registrationRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Merchant> merchantRepository,
        IIdGenerator idGenerator,
        YD_Event.Application.Menu.SysMenuService sysMenuService,
        YD_Event.Application.Auth.AuthManager authManager,
        EventRuleSnapshotService ruleSnapshotService) : base(repository)
    {
        _repository = repository;
        _unitRepository = unitRepository;
        _provinceRepository = provinceRepository;
        _cityRepository = cityRepository;
        _districtRepository = districtRepository;
        _projectRepository = projectRepository;
        _eventProjectRepository = eventProjectRepository;
        _eventProjectGroupRepository = eventProjectGroupRepository;
        _projectGroupRepository = projectGroupRepository;
        _registrationLimitRepository = registrationLimitRepository;
        _projectLimitRepository = projectLimitRepository;
        _feeConfigRepository = feeConfigRepository;
        _registrationRepository = registrationRepository;
        _merchantRepository = merchantRepository;
        _idGenerator = idGenerator;
        _sysMenuService = sysMenuService;
        _authManager = authManager;
        _ruleSnapshotService = ruleSnapshotService;
    }

    /// <summary>
    /// 分页查询赛事
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("分页查询赛事")]
    public async Task<PageResult<EventListOutput>> Page(EventQueryInput input)
    {
        var query = _repository.AsQueryable()
            .LeftJoin<EventFeeConfig>((x, f) => x.Id == f.EventId)
            .LeftJoin<YD_Event.Core.Entities.Merchant>((x, f, m) => x.MerchantId == m.Id)
            .WhereIF(!string.IsNullOrWhiteSpace(input.EventName), x => x.EventName.Contains(input.EventName))
            .WhereIF(input.EventType.HasValue, x => x.EventType == input.EventType)
            .WhereIF(input.ChargeMode.HasValue, x => x.ChargeMode == input.ChargeMode)
            .WhereIF(input.EventStatus.HasValue, x => x.EventStatus == input.EventStatus)
            .WhereIF(input.RegistrationStartTime.HasValue, x => x.RegistrationStartTime >= input.RegistrationStartTime)
            .WhereIF(input.RegistrationEndTime.HasValue, x => x.RegistrationEndTime <= input.RegistrationEndTime)
            .WhereIF(input.MatchStartTime.HasValue, x => x.MatchStartTime >= input.MatchStartTime)
            .WhereIF(input.MatchEndTime.HasValue, x => x.MatchEndTime <= input.MatchEndTime)
            .OrderByDescending(x => x.CreatedTime);

        // 数据权限过滤
        if (!_authManager.IsSuperAdmin)
        {
            // 检查全部数据权限
            var hasAllData = await _sysMenuService.CheckPermission("event:data:all");
            if (!hasAllData)
            {
                // 检查个人数据权限
                var hasPersonalData = await _sysMenuService.CheckPermission("event:data:personal");
                if (hasPersonalData)
                {
                    var userId = _authManager.UserId;
                    query = query.Where(x => x.CreatedUserId == userId);
                }
                else
                {
                    // 无权限，返回空
                    return new PageResult<EventListOutput>();
                }
            }
        }

        var resultQuery = query.OrderByDescending(x => x.CreatedTime)
            .Select((x, f, m) => new EventListOutput
            {
                Id = x.Id,
                EventName = x.EventName,
                CoverImage = x.CoverImage,
                EventType = x.EventType,
                RegistrationType = x.RegistrationType,
                ChargeMode = x.ChargeMode,
                MerchantName = m.MerchantName,
                EventStatus = x.EventStatus,
                RegistrationStartTime = x.RegistrationStartTime,
                RegistrationEndTime = x.RegistrationEndTime,
                MatchStartTime = x.MatchStartTime,
                MatchEndTime = x.MatchEndTime,
                QrCodeUrl = x.QrCodeUrl
            });

        return await resultQuery.ToPagedListAsync(input);
    }

    /// <summary>
    /// 获取赛事详情
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    [DisplayName("获取赛事详情")]
    public async Task<EventDetailOutput> GetDetail(long id)
    {
        var eventInfo = await _repository.GetByIdAsync(id);
        if (eventInfo == null) throw new InvalidOperationException("赛事不存在");

        var output = eventInfo.Adapt<EventDetailOutput>();

        // 检查是否有报名记录，决定是否可以编辑项目（有报名记录时不能编辑项目和组别）
        // 排除已取消（PaymentStatus = 4）和软删除的报名记录
        var hasRegistration = await _registrationRepository.IsAnyAsync(r =>
            r.EventId == id && !r.DeleteMark &&
            ((r.PaymentMethod == 2 && r.PaymentStatus == 1) || (r.PaymentMethod == 1 && (r.PaymentStatus == 0 || r.PaymentStatus == 1))));
        output.CanEditProject = !hasRegistration;

        // 1. 获取参与单位
        var units = await _unitRepository.GetListAsync(x => x.EventId == id);
        if (units.Any())
        {
            output.Units = units.OrderBy(x => x.Sort).Select(x => x.Adapt<EventUnitDto>()).ToList();
        }

        // 3. 获取区域名称和Code
        if (output.ProvinceId > 0)
        {
            var p = await _provinceRepository.GetFirstAsync(x => x.Id == output.ProvinceId);
            output.ProvinceCode = p?.ProvinceCode;
            output.ProvinceName = p?.ProvinceName;
        }
        if (output.CityId > 0)
        {
            var c = await _cityRepository.GetFirstAsync(x => x.Id == output.CityId);
            output.CityCode = c?.CityCode;
            output.CityName = c?.CityName;
        }
        if (output.DistrictId > 0)
        {
            var d = await _districtRepository.GetFirstAsync(x => x.Id == output.DistrictId);
            output.DistrictCode = d?.DistrictCode;
            output.DistrictName = d?.DistrictName;
        }

        // 4. 获取项目列表 (Step 3)
        var eventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == id);
        if (eventProjects.Any())
        {
            var eventProjectIds = eventProjects.Select(x => x.Id).ToList();
            var eventProjectGroups = await _eventProjectGroupRepository.GetListAsync(x => eventProjectIds.Contains(x.EventProjectId));
            var projectLimits = await _projectLimitRepository.GetListAsync(x => eventProjectIds.Contains(x.ProjectId));
            
            // 获取关联的原始项目信息
            var projectIds = eventProjects.Select(x => x.ProjectId).Distinct().ToList();
            var baseProjects = await _projectRepository.GetListAsync(x => projectIds.Contains(x.Id));
            var baseProjectGroups = await _projectGroupRepository.GetListAsync(x => projectIds.Contains(x.ProjectId));

            output.Projects = eventProjects.Select(ep => 
            {
                var baseProj = baseProjects.FirstOrDefault(p => p.Id == ep.ProjectId);
                var dto = new EventProjectInput
                {
                    Id = ep.Id,
                    ProjectId = ep.ProjectId,
                    GenderType = ep.GenderType,
                    Fee = ep.Price,
                    Name = baseProj?.Name,
                    ProjectTypeId = (long?)baseProj?.ProjectType,
                    DurationMinutes = baseProj?.DurationMinutes,
                    DurationSeconds = baseProj?.DurationSeconds,
                    // 填充完成人数相关字段
                    CompletionCountType = baseProj?.CompletionCountType ?? 0,
                    CompletionCount = baseProj?.CompletionCount,
                    CompletionCountMin = baseProj?.CompletionCountMin,
                    CompletionCountMax = baseProj?.CompletionCountMax
                };
                
                if (baseProj != null)
                {
                    dto.ProjectTypeName = baseProj.ProjectType.Description();
                    // 生成完成人数显示文本
                    if (baseProj.CompletionCountType == 0)
                    {
                        dto.CompletionCountDisplay = baseProj.CompletionCount > 0 ? $"{baseProj.CompletionCount}人" : "0人";
                    }
                    else
                    {
                        var min = baseProj.CompletionCountMin ?? 0;
                        var max = baseProj.CompletionCountMax ?? 0;
                        dto.CompletionCountDisplay = $"{min}-{max}人";
                    }
                }

                var epGroups = eventProjectGroups.Where(g => g.EventProjectId == ep.Id).ToList();
                dto.Groups = epGroups.Select(eg => 
                {
                    var baseGroup = baseProjectGroups.FirstOrDefault(bg => bg.Id == eg.ProjectGroupId);
                    return new EventProjectGroupInput
                    {
                        Id = eg.Id,
                        ProjectGroupId = eg.ProjectGroupId,
                        GroupName = eg.GroupName ?? baseGroup?.GroupName,
                        BirthDateStart = eg.BirthDateStart != DateTime.MinValue ? eg.BirthDateStart : baseGroup?.BirthDateStart,
                        BirthDateEnd = eg.BirthDateEnd != DateTime.MinValue ? eg.BirthDateEnd : baseGroup?.BirthDateEnd,
                        Gender = eg.Gender
                    };
                }).ToList();

                var limit = projectLimits.FirstOrDefault(l => l.ProjectId == ep.Id);
                if (limit != null) dto.LimitCount = limit.LimitCount;
                return dto;
            }).ToList();
        }

        // 5. 获取报名限制 (Step 3)
        var registrationLimit = await _registrationLimitRepository.GetFirstAsync(x => x.EventId == id);
        if (registrationLimit != null)
        {
            output.RegistrationLimit = registrationLimit.Adapt<EventRegistrationLimitInput>();
        }

        // 6. 获取费用配置 (Step 4)
        var feeConfig = await _feeConfigRepository.GetFirstAsync(x => x.EventId == id);
        if (feeConfig != null)
        {
            output.FeeConfig = feeConfig.Adapt<EventFeeConfigInput>();
            // 获取商户详情
            if (eventInfo.MerchantId.HasValue && eventInfo.MerchantId.Value > 0)
            {
                var merchant = await _merchantRepository.GetByIdAsync(eventInfo.MerchantId.Value);
                if (merchant != null)
                {
                    output.FeeConfig.MerchantName = merchant.MerchantName;
                    output.FeeConfig.CreditCode = merchant.CreditCode;
                    output.FeeConfig.BankName = merchant.BankName;
                    output.FeeConfig.AccountNumber = merchant.AccountNumber;
                    output.FeeConfig.MerchantId = merchant.Id;
                    output.FeeConfig.BusinessLicenseUrl = merchant.BusinessLicenseUrl;
                }
            }
            
            // 从 EventProject 表中读取项目价格并填充到 ProjectPrices
            if (eventProjects.Any())
            {
                output.FeeConfig.ProjectPrices = new Dictionary<long, decimal>();
                foreach (var ep in eventProjects)
                {
                    output.FeeConfig.ProjectPrices[ep.Id] = ep.Price;
                }
            }
        }

        // 7. 获取积分规则和退款规则快照，并赋值到原有的规则DTO中
        var pointsRuleSnapshot = await _ruleSnapshotService.GetPointsRuleSnapshot(id);
        var refundRuleSnapshots = await _ruleSnapshotService.GetRefundRuleSnapshot(id);

        if (pointsRuleSnapshot != null)
        {
            output.PointsRuleDetail = new PointsRuleDto
            {
                RuleName = pointsRuleSnapshot.RuleName,
                ParticipationPoints = pointsRuleSnapshot.ParticipationPoints,
                Remark = pointsRuleSnapshot.Remark,
                Details = pointsRuleSnapshot.Details.Select(d => new PointsRuleDetailDto
                {
                    StartRank = d.StartRank,
                    EndRank = d.EndRank,
                    Points = d.Points
                }).ToList()
            };
        }

        if (refundRuleSnapshots != null && refundRuleSnapshots.Any())
        {
            output.RefundRules = refundRuleSnapshots.Select(r => new RefundRuleDto
            {
                DayStart = r.DayStart,
                DayEnd = r.DayEnd,
                DeductPercentage = r.DeductPercentage,
                Remark = r.Remark
            }).ToList();
        }

        return output;
    }

    /// <summary>
    /// 验证赛事时间逻辑
    /// </summary>
    private void ValidateEventTime(DateTime registrationStartTime, DateTime registrationEndTime, 
        DateTime matchStartTime, DateTime matchEndTime)
    {
        if (registrationEndTime <= registrationStartTime)
        {
            throw Oops.Bah("报名结束时间必须晚于报名开始时间");
        }
        
        if (matchEndTime <= matchStartTime)
        {
            throw Oops.Bah("比赛结束时间必须晚于比赛开始时间");
        }
        
        if (matchStartTime <= registrationStartTime)
        {
            throw Oops.Bah("比赛开始时间必须晚于报名开始时间");
        }
        
        if (matchStartTime <= registrationEndTime)
        {
            throw Oops.Bah("比赛开始时间必须晚于报名结束时间");
        }
        
        if (matchEndTime <= registrationEndTime)
        {
            throw Oops.Bah("比赛结束时间必须晚于报名结束时间");
        }
    }

    /// <summary>
    /// 新增赛事
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [UnitOfWork]
    [DisplayName("新增赛事")]
    public async Task Add(AddEventInput input)
    {
        // 验证赛事时间逻辑
        ValidateEventTime(
            input.RegistrationStartTime, 
            input.RegistrationEndTime, 
            input.MatchStartTime, 
            input.MatchEndTime
        );
        
        // 从EventDetailOutput继承自AddEventInput，所以需要特殊处理一下
        // 先获取EventInfo，但先复制除了Id字段
        var provinceId = 0;
        var cityId = 0;
        var districtId = 0;
        
        // 先把输入中的regionIds当作Code处理
        if (input.ProvinceId > 0)
        {
            // 尝试通过Code找到对应的Id
            var p = await _provinceRepository.GetFirstAsync(x => x.ProvinceCode == input.ProvinceId.ToString());
            if (p != null) provinceId = (int)p.Id;
        }
        if (input.CityId > 0)
        {
            var c = await _cityRepository.GetFirstAsync(x => x.CityCode == input.CityId.ToString());
            if (c != null) cityId = (int)c.Id;
        }
        if (input.DistrictId > 0)
        {
            var d = await _districtRepository.GetFirstAsync(x => x.DistrictCode == input.DistrictId.ToString());
            if (d != null) districtId = (int)d.Id;
        }
        
        var eventInfo = input.Adapt<EventInfo>();
        eventInfo.ProvinceId = provinceId;
        eventInfo.CityId = cityId;
        eventInfo.DistrictId = districtId;
        
        eventInfo.Id = _idGenerator.NewLong();
        eventInfo.CreatedTime = DateTime.Now;
        eventInfo.Status = AvailabilityStatus.Enable;
        
        // 保存商户ID到EventInfo表
        if (input.FeeConfig != null)
        {
            eventInfo.MerchantId = input.FeeConfig.MerchantId;
        }
        
        // 自动生成二维码URL (模拟)
        eventInfo.QrCodeUrl = $"/pages/event/detail?id={eventInfo.Id}";
        
        var now = DateTime.Now;
        eventInfo.EventStatus = EventStatusUpdateService.CalculateEventStatus(eventInfo, now);

        // 保存规则快照
        await _ruleSnapshotService.SaveAllRuleSnapshots(eventInfo);

        await _repository.InsertAsync(eventInfo);

        // 1. 保存参与单位
        if (input.Units != null && input.Units.Any())
        {
            var units = input.Units.Select(u => {
                var entity = u.Adapt<EventUnit>();
                entity.Id = _idGenerator.NewLong();
                entity.EventId = eventInfo.Id;
                return entity;
            }).ToList();
            await _unitRepository.InsertRangeAsync(units);
        }

        // 2. 自定义字段 (JSON) - Already in eventInfo

        var projectFees = new List<ProjectFeeInput>();

        // 3. 保存项目信息 (Step 3)
        if (input.Projects != null && input.Projects.Any())
        {
            foreach (var projInput in input.Projects)
            {
                var eventProject = new EventProject
                {
                    Id = _idGenerator.NewLong(),
                    EventId = eventInfo.Id,
                    ProjectId = projInput.ProjectId,
                    GenderType = projInput.GenderType,
                    Price = projInput.Fee,
                    CreatedUserId = _authManager.UserId,
                    CreatedTime = DateTime.Now
                };
                await _eventProjectRepository.InsertAsync(eventProject);
                
                projectFees.Add(new ProjectFeeInput { ProjectId = eventProject.Id, Fee = projInput.Fee });

                // 保存项目分组
                if (projInput.Groups != null && projInput.Groups.Any())
                {
                    var groups = projInput.Groups.Select(g => 
                    {
                        var group = new EventProjectGroup
                        {
                            Id = _idGenerator.NewLong(),
                            EventId = eventInfo.Id,
                            EventProjectId = eventProject.Id,
                            ProjectId = projInput.ProjectId,
                            ProjectGroupId = g.ProjectGroupId,
                            GroupName = g.GroupName ?? "",
                            BirthDateStart = g.BirthDateStart ?? DateTime.MinValue,
                            BirthDateEnd = g.BirthDateEnd ?? DateTime.MinValue,
                            Gender = g.Gender ?? Gender.All,
                            CreatedUserId = _authManager.UserId,
                            CreatedTime = DateTime.Now
                        };
                        return group;
                    }).ToList();
                    await _eventProjectGroupRepository.InsertRangeAsync(groups);
                }

                // 保存项目报名限制 (Step 3 - Project Limit)
                if (projInput.LimitCount.HasValue)
                {
                    var projLimit = new EventProjectRegistrationLimit
                    {
                        Id = _idGenerator.NewLong(),
                        EventId = eventInfo.Id,
                        ProjectId = eventProject.Id,
                        LimitCount = projInput.LimitCount.Value,
                        CreatedUserId = _authManager.UserId,
                        CreatedTime = DateTime.Now
                    };
                    await _projectLimitRepository.InsertAsync(projLimit);
                }
            }
        }

        // 4. 保存报名限制 (Step 3 - Individual/Team Limit)
        if (input.RegistrationLimit != null)
        {
            var limit = input.RegistrationLimit.Adapt<EventRegistrationLimit>();
            limit.Id = _idGenerator.NewLong();
            limit.EventId = eventInfo.Id;
            await _registrationLimitRepository.InsertAsync(limit);
        }

        // 5. 保存费用配置 (Step 4)
        if (input.FeeConfig != null)
        {
            // 满足 SaveFeeConfig 的前置状态要求
            eventInfo.ProcessStatus = ProcessStatus.ProjectConfigCompleted;
            await _repository.UpdateAsync(eventInfo);

            var feeConfigInput = new SaveFeeConfigInput
            {
                EventId = eventInfo.Id,
                FeeConfig = input.FeeConfig,
                ProjectFees = projectFees
            };
            
            await SaveFeeConfig(feeConfigInput);
        }
    }

    /// <summary>
    /// 更新赛事
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [UnitOfWork]
    [DisplayName("更新赛事")]
    public async Task Update(UpdateEventInput input)
    {
        // 验证赛事时间逻辑
        ValidateEventTime(
            input.RegistrationStartTime, 
            input.RegistrationEndTime, 
            input.MatchStartTime, 
            input.MatchEndTime
        );
        
        var eventInfo = await _repository.GetByIdAsync(input.Id);
        if (eventInfo == null) throw new InvalidOperationException("赛事不存在");

        // 检查是否有报名记录：如果有人报名，检查是否修改了项目和组别（软删除和已取消的不算）
        var hasRegistration = await _registrationRepository.IsAnyAsync(x => x.EventId == input.Id && !x.DeleteMark && x.PaymentStatus != 4);
        if (hasRegistration)
        {
            var hasProjectOrGroupChange = await CheckIfProjectsOrGroupsChanged(input, eventInfo.Id);
            if (hasProjectOrGroupChange)
            {
                throw Oops.Bah("当前赛事已有人员报名，不允许修改项目信息");
            }
        }

        // 将前端传过来的Code转换为对应的Id
        var provinceId = eventInfo.ProvinceId;
        var cityId = eventInfo.CityId;
        var districtId = eventInfo.DistrictId;
        
        if (input.ProvinceId > 0)
        {
            var p = await _provinceRepository.GetFirstAsync(x => x.ProvinceCode == input.ProvinceId.ToString());
            if (p != null) provinceId = (int)p.Id;
        }
        if (input.CityId > 0)
        {
            var c = await _cityRepository.GetFirstAsync(x => x.CityCode == input.CityId.ToString());
            if (c != null) cityId = (int)c.Id;
        }
        if (input.DistrictId > 0)
        {
            var d = await _districtRepository.GetFirstAsync(x => x.DistrictCode == input.DistrictId.ToString());
            if (d != null) districtId = (int)d.Id;
        }
        
        input.Adapt(eventInfo);
        eventInfo.ProvinceId = provinceId;
        eventInfo.CityId = cityId;
        eventInfo.DistrictId = districtId;
        
        // 保存商户ID到EventInfo表
        if (input.FeeConfig != null)
        {
            eventInfo.MerchantId = input.FeeConfig.MerchantId;
        }
        
        eventInfo.UpdatedTime = DateTime.Now;
        
        // 更新状态逻辑
        var now = DateTime.Now;
        eventInfo.EventStatus = EventStatusUpdateService.CalculateEventStatus(eventInfo, now);

        // 保存规则快照
        await _ruleSnapshotService.SaveAllRuleSnapshots(eventInfo);

        await _repository.UpdateAsync(eventInfo);

        // 1. 更新参与单位 - 软删旧数据避免历史关联丢失
        await _unitRepository.SoftDeleteAsync(x => x.EventId == input.Id);
        if (input.Units != null && input.Units.Any())
        {
            var units = input.Units.Select(u => {
                var entity = u.Adapt<EventUnit>();
                entity.Id = _idGenerator.NewLong();
                entity.EventId = eventInfo.Id;
                return entity;
            }).ToList();
            await _unitRepository.InsertRangeAsync(units);
        }

        // 2. 更新自定义字段 (JSON) - Updated in eventInfo

        var projectFees = new List<ProjectFeeInput>();

        // 3. 更新项目信息
        if (hasRegistration)
        {
            // 有报名记录的情况下，只允许修改项目价格和限报
            var oldEventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == input.Id && !x.DeleteMark);
            var oldProjectDict = oldEventProjects.ToDictionary(x => x.ProjectId);

            if (input.Projects != null && input.Projects.Any())
            {
                foreach (var projInput in input.Projects)
                {
                    if (oldProjectDict.ContainsKey(projInput.ProjectId))
                    {
                        var eventProject = oldProjectDict[projInput.ProjectId];
                        
                        // 只更新项目价格
                        eventProject.Price = projInput.Fee;
                        eventProject.UpdatedTime = DateTime.Now;
                        await _eventProjectRepository.UpdateAsync(eventProject);
                        
                        projectFees.Add(new ProjectFeeInput { ProjectId = eventProject.Id, Fee = projInput.Fee });

                        // 更新项目限报
                        var oldLimit = await _projectLimitRepository.GetFirstAsync(x => x.ProjectId == eventProject.Id && !x.DeleteMark);

                        if (projInput.LimitCount.HasValue)
                        {
                            if (oldLimit != null)
                            {
                                oldLimit.LimitCount = projInput.LimitCount.Value;
                                oldLimit.UpdatedTime = DateTime.Now;
                                await _projectLimitRepository.UpdateAsync(oldLimit);
                            }
                            else
                            {
                                var projLimit = new EventProjectRegistrationLimit
                                {
                                    Id = _idGenerator.NewLong(),
                                    EventId = eventInfo.Id,
                                    ProjectId = eventProject.Id,
                                    LimitCount = projInput.LimitCount.Value,
                                    CreatedUserId = _authManager.UserId,
                                    CreatedTime = DateTime.Now
                                };
                                await _projectLimitRepository.InsertAsync(projLimit);
                            }
                        }
                        else if (oldLimit != null)
                        {
                            await _projectLimitRepository.SoftDeleteAsync(x => x.Id == oldLimit.Id);
                        }
                    }
                }
            }
        }
        else
        {
            // 没有报名记录的情况下，全量更新项目信息
            var oldEventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == input.Id && !x.DeleteMark);
            var oldProjectDict = oldEventProjects.ToDictionary(x => x.ProjectId);
            var oldEventProjectIds = oldEventProjects.Select(x => x.Id).ToList();

            if (input.Projects != null && input.Projects.Any())
            {
                var newProjectIds = new List<long>();

                foreach (var projInput in input.Projects)
                {
                    EventProject eventProject;

                    if (oldProjectDict.ContainsKey(projInput.ProjectId))
                    {
                        // 更新现有项目
                        eventProject = oldProjectDict[projInput.ProjectId];
                        eventProject.GenderType = projInput.GenderType;
                        eventProject.Price = projInput.Fee;
                        eventProject.UpdatedTime = DateTime.Now;
                        await _eventProjectRepository.UpdateAsync(eventProject);
                        newProjectIds.Add(eventProject.Id);
                    }
                    else
                    {
                        // 新增项目
                        eventProject = new EventProject
                        {
                            Id = _idGenerator.NewLong(),
                            EventId = eventInfo.Id,
                            ProjectId = projInput.ProjectId,
                            GenderType = projInput.GenderType,
                            Price = projInput.Fee,
                            CreatedUserId = _authManager.UserId,
                            CreatedTime = DateTime.Now
                        };
                        await _eventProjectRepository.InsertAsync(eventProject);
                        newProjectIds.Add(eventProject.Id);
                    }

                    projectFees.Add(new ProjectFeeInput { ProjectId = eventProject.Id, Fee = projInput.Fee });

                    // 处理项目分组
                    var oldGroups = await _eventProjectGroupRepository.GetListAsync(x => x.EventProjectId == eventProject.Id && !x.DeleteMark);
                    var oldGroupDict = BuildExistingGroupMap(oldGroups);
                    var newGroupIds = new List<long>();

                    if (projInput.Groups != null && projInput.Groups.Any())
                    {
                        foreach (var groupInput in projInput.Groups)
                        {
                            EventProjectGroup group;

                            if (oldGroupDict.ContainsKey(groupInput.ProjectGroupId))
                            {
                                // 更新现有分组
                                group = oldGroupDict[groupInput.ProjectGroupId];
                                group.GroupName = groupInput.GroupName ?? "";
                                group.BirthDateStart = groupInput.BirthDateStart ?? DateTime.MinValue;
                                group.BirthDateEnd = groupInput.BirthDateEnd ?? DateTime.MinValue;
                                group.Gender = groupInput.Gender ?? Gender.All;
                                group.UpdatedTime = DateTime.Now;
                                await _eventProjectGroupRepository.UpdateAsync(group);
                                newGroupIds.Add(group.Id);
                            }
                            else
                            {
                                // 新增分组
                                group = new EventProjectGroup
                                {
                                    Id = _idGenerator.NewLong(),
                                    EventId = eventInfo.Id,
                                    EventProjectId = eventProject.Id,
                                    ProjectId = projInput.ProjectId,
                                    ProjectGroupId = groupInput.ProjectGroupId,
                                    GroupName = groupInput.GroupName ?? "",
                                    BirthDateStart = groupInput.BirthDateStart ?? DateTime.MinValue,
                                    BirthDateEnd = groupInput.BirthDateEnd ?? DateTime.MinValue,
                                    Gender = groupInput.Gender ?? Gender.All,
                                    CreatedUserId = _authManager.UserId,
                                    CreatedTime = DateTime.Now
                                };
                                await _eventProjectGroupRepository.InsertAsync(group);
                                newGroupIds.Add(group.Id);
                            }
                        }
                    }

                    // 软删除不再存在的分组
                    var groupsToDelete = oldGroups.Where(g => !newGroupIds.Contains(g.Id)).Select(g => g.Id).ToList();
                    if (groupsToDelete.Any())
                    {
                        await _eventProjectGroupRepository.SoftDeleteAsync(x => groupsToDelete.Contains(x.Id));
                    }

                    // 处理项目限制
                    var oldLimit = await _projectLimitRepository.GetFirstAsync(x => x.ProjectId == eventProject.Id && !x.DeleteMark);

                    if (projInput.LimitCount.HasValue)
                    {
                        if (oldLimit != null)
                        {
                            // 更新现有限制
                            oldLimit.LimitCount = projInput.LimitCount.Value;
                            oldLimit.UpdatedTime = DateTime.Now;
                            await _projectLimitRepository.UpdateAsync(oldLimit);
                        }
                        else
                        {
                            // 新增限制
                            var projLimit = new EventProjectRegistrationLimit
                            {
                                Id = _idGenerator.NewLong(),
                                EventId = eventInfo.Id,
                                ProjectId = eventProject.Id,
                                LimitCount = projInput.LimitCount.Value,
                                CreatedUserId = _authManager.UserId,
                                CreatedTime = DateTime.Now
                            };
                            await _projectLimitRepository.InsertAsync(projLimit);
                        }
                    }
                    else if (oldLimit != null)
                    {
                        // 删除限制
                        await _projectLimitRepository.SoftDeleteAsync(x => x.Id == oldLimit.Id);
                    }
                }

                // 软删除不再存在的项目
                var projectsToDelete = oldEventProjects.Where(ep => !newProjectIds.Contains(ep.Id)).Select(ep => ep.Id).ToList();
                if (projectsToDelete.Any())
                {
                    await _eventProjectGroupRepository.SoftDeleteAsync(x => projectsToDelete.Contains(x.EventProjectId));
                    await _projectLimitRepository.SoftDeleteAsync(x => projectsToDelete.Contains(x.ProjectId));
                    await _eventProjectRepository.SoftDeleteAsync(x => projectsToDelete.Contains(x.Id));
                }
            }
            else
            {
                // 删除所有项目
                if (oldEventProjectIds.Any())
                {
                    await _eventProjectGroupRepository.SoftDeleteAsync(x => oldEventProjectIds.Contains(x.EventProjectId));
                    await _projectLimitRepository.SoftDeleteAsync(x => oldEventProjectIds.Contains(x.ProjectId));
                    await _eventProjectRepository.SoftDeleteAsync(x => oldEventProjectIds.Contains(x.Id));
                }
            }
        }

        // 4. 更新报名限制 - 软删旧数据避免历史关联丢失
        await _registrationLimitRepository.SoftDeleteAsync(x => x.EventId == input.Id);
        if (input.RegistrationLimit != null)
        {
            var limit = input.RegistrationLimit.Adapt<EventRegistrationLimit>();
            limit.Id = _idGenerator.NewLong();
            limit.EventId = eventInfo.Id;
            await _registrationLimitRepository.InsertAsync(limit);
        }

        // 5. 更新费用配置
        if (input.FeeConfig != null)
        {
            // 满足 SaveFeeConfig 的前置状态要求
            if (eventInfo.ProcessStatus < ProcessStatus.ProjectConfigCompleted)
            {
                eventInfo.ProcessStatus = ProcessStatus.ProjectConfigCompleted;
                await _repository.UpdateAsync(eventInfo);
            }

            var feeConfigInput = new SaveFeeConfigInput
            {
                EventId = eventInfo.Id,
                FeeConfig = input.FeeConfig,
                ProjectFees = projectFees
            };
            
            await SaveFeeConfig(feeConfigInput);
        }
    }

    /// <summary>
    /// 检查项目或组别是否有变化
    /// </summary>
    private async Task<bool> CheckIfProjectsOrGroupsChanged(UpdateEventInput input, long eventId)
    {
        var oldEventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == eventId && !x.DeleteMark);
        
        // 检查项目数量是否变化
        if ((input.Projects == null || !input.Projects.Any()) && oldEventProjects.Any())
        {
            return true; // 删除了所有项目
        }
        
        if (input.Projects != null && input.Projects.Count() != oldEventProjects.Count)
        {
            return true; // 项目数量有变化
        }

        // 如果都有项目，继续比较每个项目
        if (input.Projects != null && input.Projects.Any())
        {
            var oldProjectDict = oldEventProjects.ToDictionary(x => x.ProjectId);
            
            foreach (var inputProj in input.Projects)
            {
                // 检查是否有新的项目
                if (!oldProjectDict.ContainsKey(inputProj.ProjectId))
                {
                    return true;
                }

                var oldProj = oldProjectDict[inputProj.ProjectId];
                
                // 检查项目的基本信息是否变化
                if (oldProj.GenderType != inputProj.GenderType)
                {
                    return true;
                }
                
                // 检查组别是否变化
                var oldGroups = await _eventProjectGroupRepository.GetListAsync(x => x.EventProjectId == oldProj.Id && !x.DeleteMark);
                
                if ((inputProj.Groups == null || !inputProj.Groups.Any()) && oldGroups.Any())
                {
                    return true; // 删除了所有组别
                }
                
                if (inputProj.Groups != null && inputProj.Groups.Count() != oldGroups.Count)
                {
                    return true; // 组别数量有变化
                }
                
                if (inputProj.Groups != null && inputProj.Groups.Any())
                {
                    var oldGroupDict = BuildExistingGroupMap(oldGroups);
                    
                    foreach (var inputGroup in inputProj.Groups)
                    {
                        // 检查是否有新的组别
                        if (!oldGroupDict.ContainsKey(inputGroup.ProjectGroupId))
                        {
                            return true;
                        }
                        
                        var oldGroup = oldGroupDict[inputGroup.ProjectGroupId];
                        
                        // 检查组别的基本信息是否变化
                        if (oldGroup.GroupName != inputGroup.GroupName ||
                            oldGroup.BirthDateStart != (inputGroup.BirthDateStart ?? DateTime.MinValue) ||
                            oldGroup.BirthDateEnd != (inputGroup.BirthDateEnd ?? DateTime.MinValue) ||
                            oldGroup.Gender != (inputGroup.Gender ?? Gender.All))
                        {
                            return true;
                        }
                    }
                }
            }
        }
        
        return false;
    }

    /// <summary>
    /// 导出赛事
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("导出赛事")]
    public async Task<byte[]> Export(EventExportInput input)
    {
        var query = _repository.AsQueryable()
            .LeftJoin<EventFeeConfig>((e, f) => e.Id == f.EventId)
            .LeftJoin<YD_Event.Core.Entities.Merchant>((e, f, m) => e.MerchantId == m.Id)
            .WhereIF(!string.IsNullOrWhiteSpace(input.EventName), e => e.EventName.Contains(input.EventName))
            .WhereIF(input.EventType.HasValue, e => e.EventType == input.EventType)
            .WhereIF(input.ChargeMode.HasValue, e => e.ChargeMode == input.ChargeMode)
            .WhereIF(input.EventStatus.HasValue, e => e.EventStatus == input.EventStatus)
            .WhereIF(input.RegistrationStartTime.HasValue, e => e.RegistrationStartTime >= input.RegistrationStartTime)
            .WhereIF(input.RegistrationEndTime.HasValue, e => e.RegistrationEndTime <= input.RegistrationEndTime)
            .WhereIF(input.MatchStartTime.HasValue, e => e.MatchStartTime >= input.MatchStartTime)
            .WhereIF(input.MatchEndTime.HasValue, e => e.MatchEndTime <= input.MatchEndTime)
            .Select((e, f, m) => new EventExportData
            {
                Id = e.Id,
                EventName = e.EventName,
                EventType = e.EventType,
                ChargeMode = e.ChargeMode,
                RegistrationType = e.RegistrationType,
                EventStatus = e.EventStatus,
                RegistrationStartTime = e.RegistrationStartTime,
                RegistrationEndTime = e.RegistrationEndTime,
                MaterialUploadEndTime = e.MaterialUploadEndTime,
                MatchStartTime = e.MatchStartTime,
                MatchEndTime = e.MatchEndTime,
                DetailAddress = e.DetailAddress,
                MerchantName = m.MerchantName
            });

        var list = await query.ToListAsync();
        var eventIds = list.Select(x => x.Id).ToList();
        var units = await _unitRepository.GetListAsync(x => eventIds.Contains(x.EventId));
        
        // 使用 EPPlus 进行导出
        OfficeOpenXml.ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
        using var package = new OfficeOpenXml.ExcelPackage();
        var worksheet = package.Workbook.Worksheets.Add("赛事列表");
        
        // 定义所有可用的列
        var allColumns = new List<(string Header, Func<EventExportData, string> GetValue)>
        {
            ("赛事名称", item => item.EventName ?? ""),
            ("赛事类型", item => GetEnumDescription(item.EventType)),
            ("收费模式", item => GetEnumDescription(item.ChargeMode)),
            ("收款商户", item => item.MerchantName ?? ""),
            ("报名方式", item => GetEnumDescription(item.RegistrationType)),
            ("赛事状态", item => GetEnumDescription(item.EventStatus)),
            ("报名起止时间", item => $"{item.RegistrationStartTime:yyyy-MM-dd HH:mm} - {item.RegistrationEndTime:yyyy-MM-dd HH:mm}"),
            ("上传素材截至时间", item => item.MaterialUploadEndTime.HasValue ? item.MaterialUploadEndTime.Value.ToString("yyyy-MM-dd HH:mm") : ""),
            ("比赛起止时间", item => $"{item.MatchStartTime:yyyy-MM-dd HH:mm} - {item.MatchEndTime:yyyy-MM-dd HH:mm}"),
            ("赛事地址", item => item.DetailAddress ?? ""),
            ("主办单位", item => ""), // 后面填充
            ("承办单位", item => ""), // 后面填充
            ("协办单位", item => ""), // 后面填充
            ("赞助单位", item => "")  // 后面填充
        };
        
        // 确定要导出的列
        var selectedFields = input.ExportFields ?? new List<string>();
        bool exportAll = selectedFields.Count == 0;
        
        var columnsToExport = allColumns
            .Where(col => exportAll || selectedFields.Contains(col.Header))
            .ToList();
        
        if (columnsToExport.Count == 0)
        {
            columnsToExport = allColumns;
        }
        
        // 写入表头
        for (int i = 0; i < columnsToExport.Count; i++)
        {
            worksheet.Cells[1, i + 1].Value = columnsToExport[i].Header;
        }
        
        // 设置表头样式
        using (var headerRange = worksheet.Cells[1, 1, 1, columnsToExport.Count])
        {
            headerRange.Style.Font.Bold = true;
            headerRange.Style.Font.Size = 11;
            headerRange.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
            headerRange.Style.VerticalAlignment = OfficeOpenXml.Style.ExcelVerticalAlignment.Center;
            headerRange.Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
            headerRange.Style.Fill.BackgroundColor.SetColor(System.Drawing.Color.LightBlue);
        }
        
        // 写入数据行
        for (int rowIndex = 0; rowIndex < list.Count; rowIndex++)
        {
            var item = list[rowIndex];
            var eventUnits = units.Where(u => u.EventId == item.Id).ToList();
            var hostNames = string.Join(",", eventUnits.Where(u => u.UnitType == UnitType.Host).Select(u => u.UnitName));
            var organizerNames = string.Join(",", eventUnits.Where(u => u.UnitType == UnitType.Organizer).Select(u => u.UnitName));
            var coOrganizerNames = string.Join(",", eventUnits.Where(u => u.UnitType == UnitType.CoOrganizer).Select(u => u.UnitName));
            var sponsorNames = string.Join(",", eventUnits.Where(u => u.UnitType == UnitType.Sponsor).Select(u => u.UnitName));
            
            for (int colIndex = 0; colIndex < columnsToExport.Count; colIndex++)
            {
                var column = columnsToExport[colIndex];
                string cellValue = column.GetValue(item);
                
                // 补充参与单位数据
                if (column.Header == "主办单位") cellValue = hostNames;
                else if (column.Header == "承办单位") cellValue = organizerNames;
                else if (column.Header == "协办单位") cellValue = coOrganizerNames;
                else if (column.Header == "赞助单位") cellValue = sponsorNames;
                
                worksheet.Cells[rowIndex + 2, colIndex + 1].Value = cellValue;
            }
        }
        
        // 自动调整列宽
        worksheet.Cells[worksheet.Dimension.Address].AutoFitColumns();
        
        return await package.GetAsByteArrayAsync();
    }
    
    /// <summary>
    /// 获取枚举描述
    /// </summary>
    private string GetEnumDescription(object enumValue)
    {
        if (enumValue == null) return "";
        var type = enumValue.GetType();
        if (!type.IsEnum) return enumValue.ToString();
        
        var fieldInfo = type.GetField(enumValue.ToString());
        if (fieldInfo == null) return enumValue.ToString();
        
        var descriptionAttribute = (System.ComponentModel.DescriptionAttribute)
            System.Attribute.GetCustomAttribute(fieldInfo, typeof(System.ComponentModel.DescriptionAttribute));
        
        return descriptionAttribute != null ? descriptionAttribute.Description : enumValue.ToString();
    }

    /// <summary>
    /// 删除赛事
    /// </summary>
    /// <param name="dto"></param>
    /// <returns></returns>
    [DisplayName("删除赛事")]
    public override async Task Delete(KeyDto dto)
    {
        // 检查是否有报名记录（排除已取消和软删除的）
        if (await _registrationRepository.IsAnyAsync(x => x.EventId == dto.Id && !x.DeleteMark && x.PaymentStatus != 4))
        {
            throw new InvalidOperationException("已有人员报名此赛事，暂不支持删除");
        }

        // 软删除 EventInfo
        await base.Delete(dto);
        // 关联表物理删除或保留？通常保留。如果需要清理：
        // await _unitRepository.DeleteAsync(x => x.EventId == dto.Id);
    }

    /// <summary>
    /// 阶段1：保存基本信息
    /// </summary>
    /// <param name="input"></param>
    /// <returns>EventId</returns>
    [UnitOfWork]
    [DisplayName("保存基本信息")]
    public async Task<long> SaveBasicInfo(SaveBasicInfoInput input)
    {
        // 验证赛事时间逻辑
        ValidateEventTime(
            input.RegistrationStartTime, 
            input.RegistrationEndTime, 
            input.MatchStartTime, 
            input.MatchEndTime
        );
        
        EventInfo eventInfo;
        if (input.EventId.HasValue && input.EventId.Value > 0)
        {
            eventInfo = await _repository.GetByIdAsync(input.EventId.Value);
            if (eventInfo == null) throw new InvalidOperationException("赛事不存在");
            input.Adapt(eventInfo);
            eventInfo.UpdatedTime = DateTime.Now;
            
            // 保存规则快照
            await _ruleSnapshotService.SaveAllRuleSnapshots(eventInfo);
        }
        else
        {
            eventInfo = input.Adapt<EventInfo>();
            eventInfo.Id = _idGenerator.NewLong();
            eventInfo.CreatedTime = DateTime.Now;
            eventInfo.Status = AvailabilityStatus.Enable; // 默认启用
            eventInfo.ProcessStatus = ProcessStatus.BasicInfoCompleted;
            
            // 初始状态计算
            var now = DateTime.Now;
            eventInfo.EventStatus = EventStatusUpdateService.CalculateEventStatus(eventInfo, now);

            // 保存规则快照
            await _ruleSnapshotService.SaveAllRuleSnapshots(eventInfo);

            await _repository.InsertAsync(eventInfo);
        }

        // 更新状态
        if (eventInfo.ProcessStatus == ProcessStatus.NotStarted)
        {
            eventInfo.ProcessStatus = ProcessStatus.BasicInfoCompleted;
        }
        
        await _repository.UpdateAsync(eventInfo);
        return eventInfo.Id;
    }

    /// <summary>
    /// 阶段2：保存参与单位
    /// </summary>
    /// <param name="input"></param>
    [UnitOfWork]
    [DisplayName("保存参与单位")]
    public async Task SaveUnits(SaveUnitsInput input)
    {
        var eventInfo = await _repository.GetByIdAsync(input.EventId);
        if (eventInfo == null) throw new InvalidOperationException("赛事不存在");

        if (eventInfo.ProcessStatus < ProcessStatus.BasicInfoCompleted)
        {
            throw new InvalidOperationException("请先完成基本信息配置");
        }

        // 全量更新单位 - 软删旧数据避免历史关联丢失
        await _unitRepository.SoftDeleteAsync(x => x.EventId == input.EventId);
        
        if (input.Units != null && input.Units.Any())
        {
            var units = input.Units.Select(u => {
                var entity = u.Adapt<EventUnit>();
                entity.Id = _idGenerator.NewLong();
                entity.EventId = input.EventId;
                return entity;
            }).ToList();
            await _unitRepository.InsertRangeAsync(units);
        }

        // 更新流程状态
        if (eventInfo.ProcessStatus < ProcessStatus.ParticipantsCompleted)
        {
            eventInfo.ProcessStatus = ProcessStatus.ParticipantsCompleted;
            await _repository.UpdateAsync(eventInfo);
        }
    }

    /// <summary>
    /// 阶段3：保存项目与限报配置
    /// </summary>
    /// <param name="input"></param>
    [UnitOfWork]
    [DisplayName("保存项目与限报配置")]
    public async Task SaveProjects(SaveProjectsInput input)
    {
        var eventInfo = await _repository.GetByIdAsync(input.EventId);
        if (eventInfo == null) throw new InvalidOperationException("赛事不存在");

        if (eventInfo.ProcessStatus < ProcessStatus.ParticipantsCompleted)
        {
            throw new InvalidOperationException("请先完成参与单位配置");
        }

        // 检查是否有报名记录：如果有人报名，检查是否修改了项目和组别（软删除的不算）
        var hasRegistration = await _registrationRepository.IsAnyAsync(x => x.EventId == input.EventId && !x.DeleteMark);
        if (hasRegistration)
        {
            var oldEventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == input.EventId && !x.DeleteMark);
            var oldProjectDict = oldEventProjects.ToDictionary(x => x.ProjectId);
            var oldProjectIds = oldEventProjects.Select(x => x.ProjectId).ToList();
            var newProjectIds = input.Projects?.Select(p => p.ProjectId).ToList() ?? new List<long>();

            // 检查是否新增或删除了项目
            if (newProjectIds.Except(oldProjectIds).Any() || oldProjectIds.Except(newProjectIds).Any())
            {
                throw Oops.Bah("当前赛事已有人员报名，不允许修改项目信息");
            }

            // 检查每个项目的组别是否有变化
            foreach (var projInput in input.Projects ?? new List<EventProjectInput>())
            {
                if (oldProjectDict.ContainsKey(projInput.ProjectId))
                {
                    var oldProj = oldProjectDict[projInput.ProjectId];

                    // 检查项目基本信息是否变化
                    if (oldProj.GenderType != projInput.GenderType)
                    {
                        throw Oops.Bah("当前赛事已有人员报名，不允许修改项目信息");
                    }

                    // 检查组别是否变化
                    var oldGroups = await _eventProjectGroupRepository.GetListAsync(x => x.EventProjectId == oldProj.Id && !x.DeleteMark);
                    var oldGroupIds = oldGroups.Select(g => g.ProjectGroupId).ToList();
                    var newGroupIds = projInput.Groups?.Select(g => g.ProjectGroupId).ToList() ?? new List<long>();

                    if (newGroupIds.Except(oldGroupIds).Any() || oldGroupIds.Except(newGroupIds).Any())
                    {
                        throw Oops.Bah("当前赛事已有人员报名，不允许修改项目信息");
                    }

                    // 检查组别的基本信息是否变化
                    foreach (var groupInput in projInput.Groups ?? new List<EventProjectGroupInput>())
                    {
                        var oldGroup = oldGroups.FirstOrDefault(g => g.ProjectGroupId == groupInput.ProjectGroupId);
                        if (oldGroup != null)
                        {
                            if (oldGroup.GroupName != (groupInput.GroupName ?? "") ||
                                oldGroup.BirthDateStart != (groupInput.BirthDateStart ?? DateTime.MinValue) ||
                                oldGroup.BirthDateEnd != (groupInput.BirthDateEnd ?? DateTime.MinValue) ||
                                oldGroup.Gender != (groupInput.Gender ?? Gender.All))
                            {
                                throw Oops.Bah("当前赛事已有人员报名，不允许修改项目信息");
                            }
                        }
                    }
                }
            }

            // 有报名记录的情况下，只允许修改项目价格和限报
            foreach (var projInput in input.Projects ?? new List<EventProjectInput>())
            {
                if (oldProjectDict.ContainsKey(projInput.ProjectId))
                {
                    var eventProject = oldProjectDict[projInput.ProjectId];

                    // 只更新项目价格
                    eventProject.Price = projInput.Fee;
                    eventProject.UpdatedTime = DateTime.Now;
                    await _eventProjectRepository.UpdateAsync(eventProject);

                    // 更新项目限报
                    var oldLimit = await _projectLimitRepository.GetFirstAsync(x => x.ProjectId == eventProject.Id && !x.DeleteMark);

                    if (projInput.LimitCount.HasValue)
                    {
                        if (oldLimit != null)
                        {
                            oldLimit.LimitCount = projInput.LimitCount.Value;
                            oldLimit.UpdatedTime = DateTime.Now;
                            await _projectLimitRepository.UpdateAsync(oldLimit);
                        }
                        else
                        {
                            var projLimit = new EventProjectRegistrationLimit
                            {
                                Id = _idGenerator.NewLong(),
                                EventId = input.EventId,
                                ProjectId = eventProject.Id,
                                LimitCount = projInput.LimitCount.Value,
                                CreatedUserId = _authManager.UserId,
                                CreatedTime = DateTime.Now
                            };
                            await _projectLimitRepository.InsertAsync(projLimit);
                        }
                    }
                    else if (oldLimit != null)
                    {
                        await _projectLimitRepository.SoftDeleteAsync(x => x.Id == oldLimit.Id);
                    }
                }
            }
        }
        else
        {
                // 没有报名记录的情况下，全量更新项目信息
            var oldEventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == input.EventId && !x.DeleteMark);
            var oldProjectDict = oldEventProjects.ToDictionary(x => x.ProjectId);
            var oldEventProjectIds = oldEventProjects.Select(x => x.Id).ToList();

            // 处理输入的项目
            if (input.Projects != null && input.Projects.Any())
            {
                var newProjectIds = new List<long>();

                foreach (var projInput in input.Projects)
                {
                    EventProject eventProject;

                    if (oldProjectDict.ContainsKey(projInput.ProjectId))
                    {
                        // 更新现有项目
                        eventProject = oldProjectDict[projInput.ProjectId];
                        eventProject.GenderType = projInput.GenderType;
                        eventProject.Price = projInput.Fee;
                        eventProject.UpdatedTime = DateTime.Now;
                        await _eventProjectRepository.UpdateAsync(eventProject);
                        newProjectIds.Add(eventProject.Id);
                    }
                    else
                    {
                        // 新增项目
                        eventProject = new EventProject
                        {
                            Id = _idGenerator.NewLong(),
                            EventId = input.EventId,
                            ProjectId = projInput.ProjectId,
                            GenderType = projInput.GenderType,
                            Price = projInput.Fee,
                            CreatedUserId = _authManager.UserId,
                            CreatedTime = DateTime.Now
                        };
                        await _eventProjectRepository.InsertAsync(eventProject);
                        newProjectIds.Add(eventProject.Id);
                    }

                    // 处理项目分组
                    var oldGroups = await _eventProjectGroupRepository.GetListAsync(x => x.EventProjectId == eventProject.Id && !x.DeleteMark);
                    var oldGroupDict = BuildExistingGroupMap(oldGroups);
                    var newGroupIds = new List<long>();

                    if (projInput.Groups != null && projInput.Groups.Any())
                    {
                        foreach (var groupInput in projInput.Groups)
                        {
                            EventProjectGroup group;

                            if (oldGroupDict.ContainsKey(groupInput.ProjectGroupId))
                            {
                                // 更新现有分组
                                group = oldGroupDict[groupInput.ProjectGroupId];
                                group.GroupName = groupInput.GroupName ?? "";
                                group.BirthDateStart = groupInput.BirthDateStart ?? DateTime.MinValue;
                                group.BirthDateEnd = groupInput.BirthDateEnd ?? DateTime.MinValue;
                                group.Gender = groupInput.Gender ?? Gender.All;
                                group.UpdatedTime = DateTime.Now;
                                await _eventProjectGroupRepository.UpdateAsync(group);
                                newGroupIds.Add(group.Id);
                            }
                            else
                            {
                                // 新增分组
                                group = new EventProjectGroup
                                {
                                    Id = _idGenerator.NewLong(),
                                    EventId = input.EventId,
                                    EventProjectId = eventProject.Id,
                                    ProjectId = projInput.ProjectId,
                                    ProjectGroupId = groupInput.ProjectGroupId,
                                    GroupName = groupInput.GroupName ?? "",
                                    BirthDateStart = groupInput.BirthDateStart ?? DateTime.MinValue,
                                    BirthDateEnd = groupInput.BirthDateEnd ?? DateTime.MinValue,
                                    Gender = groupInput.Gender ?? Gender.All,
                                    CreatedUserId = _authManager.UserId,
                                    CreatedTime = DateTime.Now
                                };
                                await _eventProjectGroupRepository.InsertAsync(group);
                                newGroupIds.Add(group.Id);
                            }
                        }
                    }

                    // 软删除不再存在的分组
                    var groupsToDelete = oldGroups.Where(g => !newGroupIds.Contains(g.Id)).Select(g => g.Id).ToList();
                    if (groupsToDelete.Any())
                    {
                        await _eventProjectGroupRepository.SoftDeleteAsync(x => groupsToDelete.Contains(x.Id));
                    }

                    // 处理项目限制
                    var oldLimit = await _projectLimitRepository.GetFirstAsync(x => x.ProjectId == eventProject.Id && !x.DeleteMark);

                    if (projInput.LimitCount.HasValue)
                    {
                        if (oldLimit != null)
                        {
                            // 更新现有限制
                            oldLimit.LimitCount = projInput.LimitCount.Value;
                            oldLimit.UpdatedTime = DateTime.Now;
                            await _projectLimitRepository.UpdateAsync(oldLimit);
                        }
                        else
                        {
                            // 新增限制
                            var projLimit = new EventProjectRegistrationLimit
                            {
                                Id = _idGenerator.NewLong(),
                                EventId = input.EventId,
                                ProjectId = eventProject.Id,
                                LimitCount = projInput.LimitCount.Value,
                                CreatedUserId = _authManager.UserId,
                                CreatedTime = DateTime.Now
                            };
                            await _projectLimitRepository.InsertAsync(projLimit);
                        }
                    }
                    else if (oldLimit != null)
                    {
                        // 删除限制
                        await _projectLimitRepository.SoftDeleteAsync(x => x.Id == oldLimit.Id);
                    }
                }

                // 软删除不再存在的项目
                var projectsToDelete = oldEventProjects.Where(ep => !newProjectIds.Contains(ep.Id)).Select(ep => ep.Id).ToList();
                if (projectsToDelete.Any())
                {
                    await _eventProjectGroupRepository.SoftDeleteAsync(x => projectsToDelete.Contains(x.EventProjectId));
                    await _projectLimitRepository.SoftDeleteAsync(x => projectsToDelete.Contains(x.ProjectId));
                    await _eventProjectRepository.SoftDeleteAsync(x => projectsToDelete.Contains(x.Id));
                }
            }
            else
            {
                // 删除所有项目
                if (oldEventProjectIds.Any())
                {
                    await _eventProjectGroupRepository.SoftDeleteAsync(x => oldEventProjectIds.Contains(x.EventProjectId));
                    await _projectLimitRepository.SoftDeleteAsync(x => oldEventProjectIds.Contains(x.ProjectId));
                    await _eventProjectRepository.SoftDeleteAsync(x => oldEventProjectIds.Contains(x.Id));
                }
            }
        }

        // 2. 更新报名限制 - 软删旧数据避免历史关联丢失
        await _registrationLimitRepository.SoftDeleteAsync(x => x.EventId == input.EventId);
        if (input.RegistrationLimit != null)
        {
            var limit = input.RegistrationLimit.Adapt<EventRegistrationLimit>();
            limit.Id = _idGenerator.NewLong();
            limit.EventId = input.EventId;
            await _registrationLimitRepository.InsertAsync(limit);
        }

        // 更新流程状态
        if (eventInfo.ProcessStatus < ProcessStatus.ProjectConfigCompleted)
        {
            eventInfo.ProcessStatus = ProcessStatus.ProjectConfigCompleted;
            await _repository.UpdateAsync(eventInfo);
        }
    }

    /// <summary>
    /// 阶段4：保存费用与账户配置
    /// </summary>
    /// <param name="input"></param>
    /// <returns>二维码URL</returns>
    [UnitOfWork]
    [DisplayName("保存费用与账户配置")]
    public async Task<string> SaveFeeConfig(SaveFeeConfigInput input)
    {
        var eventInfo = await _repository.GetByIdAsync(input.EventId);
        if (eventInfo == null) throw new InvalidOperationException("赛事不存在");

        if (eventInfo.ProcessStatus < ProcessStatus.ProjectConfigCompleted)
        {
            throw new InvalidOperationException("请先完成项目配置");
        }

        // 验证非免费模式下的必填参数
        if (input.FeeConfig != null && input.FeeConfig.ChargeMode != ChargeMode.Free)
        {
            // 验证收款商户
            if (!input.FeeConfig.MerchantId.HasValue || input.FeeConfig.MerchantId.Value <= 0)
            {
                throw new InvalidOperationException("收费模式为非免费时，必须选择收款商户");
            }

            // 验证定价（赛事）和单价（赛事）模式下的价格
            if (input.FeeConfig.ChargeMode == ChargeMode.FixedPrice || input.FeeConfig.ChargeMode == ChargeMode.UnitPriceEvent)
            {
                if (input.FeeConfig.Price <= 0)
                {
                    throw new InvalidOperationException("收费模式为“定价（赛事）”或“单价（赛事）”时，价格必须大于0");
                }
                
                // 格式验证：最多保留两位小数
                if (!AmountHelper.IsValidAmount(input.FeeConfig.Price))
                {
                    throw new InvalidOperationException("价格格式不正确，最多保留两位小数");
                }
            }
        }

        // 验证单价（项目）模式下的项目单价
        if (input.FeeConfig != null && input.FeeConfig.ChargeMode == ChargeMode.UnitPriceProject)
        {
            if (input.ProjectFees == null || !input.ProjectFees.Any())
            {
                throw new InvalidOperationException("收费模式为“单价（项目）”时，必须提供项目单价信息");
            }

            var projectIds = input.ProjectFees.Select(x => x.ProjectId).ToList();
            var eventProjects = await _eventProjectRepository.GetListAsync(x => x.EventId == input.EventId && projectIds.Contains(x.Id));

            foreach (var feeInput in input.ProjectFees)
            {
                if (feeInput.Fee <= 0)
                {
                    throw new InvalidOperationException("项目单价必须大于0");
                }
                
                // 格式验证：最多保留两位小数
                if (!AmountHelper.IsValidAmount(feeInput.Fee))
                {
                    throw new InvalidOperationException("项目单价格式不正确，最多保留两位小数");
                }

                var proj = eventProjects.FirstOrDefault(p => p.Id == feeInput.ProjectId);
                if (proj != null)
                {
                    proj.Price = feeInput.Fee;
                    proj.UpdatedTime = DateTime.Now;
                    await _eventProjectRepository.UpdateAsync(proj);
                }
            }
        }

        // 更新费用配置 - 软删旧数据避免历史关联丢失
        await _feeConfigRepository.SoftDeleteAsync(x => x.EventId == input.EventId);
        if (input.FeeConfig != null)
        {
            var feeConfig = input.FeeConfig.Adapt<EventFeeConfig>();
            feeConfig.Id = _idGenerator.NewLong();
            feeConfig.EventId = input.EventId;
            await _feeConfigRepository.InsertAsync(feeConfig);
            
            // 更新赛事的 ChargeMode
            eventInfo.ChargeMode = feeConfig.ChargeMode;
        }

        // 生成二维码URL
        var qrCodeUrl = $"/pages/event/detail?id={eventInfo.Id}";
        eventInfo.QrCodeUrl = qrCodeUrl;

        // 更新流程状态和赛事状态
        eventInfo.ProcessStatus = ProcessStatus.FeeConfigCompleted;
        
        // 重新计算并确认赛事状态
        var now = DateTime.Now;
        eventInfo.EventStatus = EventStatusUpdateService.CalculateEventStatus(eventInfo, now);

        await _repository.UpdateAsync(eventInfo);

        return qrCodeUrl;
    }

    /// <summary>
    /// 获取赛事填报进度
    /// </summary>
    /// <param name="eventId"></param>
    /// <returns></returns>
    [DisplayName("获取赛事填报进度")]
    public async Task<EventProgressOutput> GetProgress(long eventId)
    {
        var eventInfo = await _repository.GetByIdAsync(eventId);
        if (eventInfo == null) throw new InvalidOperationException("赛事不存在");

        var completedStages = new List<string>();
        if (eventInfo.ProcessStatus >= ProcessStatus.BasicInfoCompleted) completedStages.Add("basic");
        if (eventInfo.ProcessStatus >= ProcessStatus.ParticipantsCompleted) completedStages.Add("units");
        if (eventInfo.ProcessStatus >= ProcessStatus.ProjectConfigCompleted) completedStages.Add("projects");
        if (eventInfo.ProcessStatus >= ProcessStatus.FeeConfigCompleted) completedStages.Add("fee");

        return new EventProgressOutput
        {
            EventId = eventInfo.Id,
            ProcessStatus = eventInfo.ProcessStatus,
            CompletedStages = completedStages
        };
    }

    private static Dictionary<long, EventProjectGroup> BuildExistingGroupMap(List<EventProjectGroup> groups)
    {
        if (groups.Any(x => x.ProjectGroupId <= 0))
            throw Oops.Bah("赛事存在未关联平台组别的历史数据，请先核查修复项目组别配置");
        if (groups.GroupBy(x => x.ProjectGroupId).Any(x => x.Count() > 1))
            throw Oops.Bah("赛事存在重复的平台组别关联，请先核查修复项目组别配置");

        return groups.ToDictionary(x => x.ProjectGroupId);
    }
}