using YD_Event.Application.Event.Dtos;
using YD_Event.Application.Auth;
using YD_Event.Core.Entities;
using YD_Event.Core.Enum;
using YD_Event.Core.Domain;
using Microsoft.AspNetCore.Mvc;
using OfficeOpenXml;
using OfficeOpenXml.Style;
using System.Drawing;

namespace YD_Event.Application.Event;

/// <summary>
/// 报名管理服务
/// </summary>
public class EventRegistrationService : BaseService<EventRegistration>, ITransient
{
    private readonly ISqlSugarRepository<EventRegistration> _repository;
    private readonly ISqlSugarRepository<EventRegistrationItem> _itemRepository;
    private readonly ISqlSugarRepository<EventRegistrationPerson> _personRepository;
    private readonly ISqlSugarRepository<EventRegistrationPayment> _paymentRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Order> _orderRepository;
    private readonly ISqlSugarRepository<TeamMember> _teamMemberRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.AppUser> _appUserRepository;
    private readonly ISqlSugarRepository<MerchantCertification> _merchantCertificationRepository;
    private readonly ISqlSugarRepository<EventInfo> _eventInfoRepository;
    private readonly ISqlSugarRepository<EventProject> _eventProjectRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Project> _projectRepository;
    private readonly IIdGenerator _idGenerator;
    private readonly OrderNoGeneratorService _orderNoGeneratorService;
    private readonly AuthManager _authManager;

    public EventRegistrationService(
        ISqlSugarRepository<EventRegistration> repository,
        ISqlSugarRepository<EventRegistrationItem> itemRepository,
        ISqlSugarRepository<EventRegistrationPerson> personRepository,
        ISqlSugarRepository<EventRegistrationPayment> paymentRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Order> orderRepository,
        ISqlSugarRepository<TeamMember> teamMemberRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.AppUser> appUserRepository,
        ISqlSugarRepository<MerchantCertification> merchantCertificationRepository,
        ISqlSugarRepository<EventInfo> eventInfoRepository,
        ISqlSugarRepository<EventProject> eventProjectRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Project> projectRepository,
        IIdGenerator idGenerator,
        OrderNoGeneratorService orderNoGeneratorService,
        AuthManager authManager) : base(repository)
    {
        _repository = repository;
        _itemRepository = itemRepository;
        _personRepository = personRepository;
        _paymentRepository = paymentRepository;
        _orderRepository = orderRepository;
        _teamMemberRepository = teamMemberRepository;
        _appUserRepository = appUserRepository;
        _merchantCertificationRepository = merchantCertificationRepository;
        _eventInfoRepository = eventInfoRepository;
        _eventProjectRepository = eventProjectRepository;
        _projectRepository = projectRepository;
        _idGenerator = idGenerator;
        _orderNoGeneratorService = orderNoGeneratorService;
        _authManager = authManager;
    }

    /// <summary>
    /// 分页查询报名
    /// </summary>
    [DisplayName("分页查询报名")]
    public async Task<PageResult<RegistrationListOutput>> Page(RegistrationQueryInput input)
    {
        var query = _repository.AsQueryable()
            // 排除软删除的报名记录
            .Where(x => !x.DeleteMark)
            // 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)
            .Where(x => (x.PaymentMethod == 2 && x.PaymentStatus == 1) || (x.PaymentMethod == 1 && (x.PaymentStatus == 0 || x.PaymentStatus == 1)))
            .WhereIF(input.EventId.HasValue, x => x.EventId == input.EventId)
            .WhereIF(input.RegistrationMode.HasValue, x => x.RegistrationMode == input.RegistrationMode)
            .WhereIF(!string.IsNullOrWhiteSpace(input.UnitName), x => x.TeamName.Contains(input.UnitName))
            .WhereIF(!string.IsNullOrWhiteSpace(input.UserName), x => x.ContactName.Contains(input.UserName))
            .WhereIF(!string.IsNullOrWhiteSpace(input.ContactPhone), x => x.ContactPhone.Contains(input.ContactPhone))
            .WhereIF(input.IsUploadMaterial.HasValue, x => (input.IsUploadMaterial.Value ? !string.IsNullOrEmpty(x.MaterialUrl) : string.IsNullOrEmpty(x.MaterialUrl)))
            .WhereIF(input.PaymentMethod.HasValue, x => x.PaymentMethod == input.PaymentMethod)
            .WhereIF(input.PaymentStatus.HasValue, x => x.PaymentStatus == input.PaymentStatus)
            .WhereIF(input.RegistrationTimeStart.HasValue, x => x.RegistrationTime >= input.RegistrationTimeStart)
            .WhereIF(input.RegistrationTimeEnd.HasValue, x => x.RegistrationTime <= input.RegistrationTimeEnd)
            .OrderByDescending(x => x.RegistrationTime)
            .Select(x => new RegistrationListOutput
            {
                Id = x.Id,
                RegistrationMode = x.RegistrationMode,
                CreatedUserId = x.CreatedUserId, // 保存创建用户ID以便后续查询单位名称
                MerchantCertificationId = x.MerchantCertificationId, // 保存单位认证ID以便后续查询单位名称
                UnitName = null, // 不初始化为 TeamName，只从单位认证信息中获取
                ContactName = x.ContactName,
                ContactPhone = x.ContactPhone,
                TotalPersonCount = x.TotalPersonCount,
                IsUploadMaterial = !string.IsNullOrEmpty(x.MaterialUrl),
                PaymentMethod = x.PaymentMethod,
                PaymentMethodType = x.PaymentMethodType,
                OrderNo = x.OrderNo,
                TotalAmount = x.TotalAmount,
                PaymentStatus = x.PaymentStatus,
                PaymentProofUrl = x.PaymentProofUrl,
                RegistrationTime = x.RegistrationTime
            });

        var result = await query.ToPagedListAsync(input);
        
        // 获取所有报名记录的 MerchantCertificationId
        var regIds = result.Rows.Select(x => x.Id).ToList();
        var merchantCertIds = result.Rows
            .Where(r => r.MerchantCertificationId.HasValue)
            .Select(r => r.MerchantCertificationId.Value)
            .Distinct()
            .ToList();

        // 获取单位认证信息
        Dictionary<long, string> merchantNameDict = new Dictionary<long, string>();
        if (merchantCertIds.Any())
        {
            var merchantCerts = await _merchantCertificationRepository.AsQueryable()
                .Where(mc => merchantCertIds.Contains(mc.Id) && !mc.DeleteMark)
                .ToListAsync();
            merchantNameDict = merchantCerts.ToDictionary(mc => mc.Id, mc => mc.MerchantName);
        }

        // 填充下拉详情
        if (result.Rows.Any())
        {
            var items = await _itemRepository.GetListAsync(x => regIds.Contains(x.RegistrationId) && !x.DeleteMark);
            // 使用关联查询获取报名人员及其关联的用户信息
            var persons = await _personRepository.AsQueryable()
                .Includes(p => p.User) // 关联查询用户信息
                .Where(x => regIds.Contains(x.RegistrationId) && !x.DeleteMark)
                .ToListAsync();
            
            // 获取所有赛事项目和项目信息，用于判断项目类型
            var eventProjectIds = items.Select(x => x.ProjectId).Distinct().ToList();
            var eventProjects = await _eventProjectRepository.GetListAsync(x => eventProjectIds.Contains(x.Id));
            var projectIds = eventProjects.Select(x => x.ProjectId).Distinct().ToList();
            var projects = await _projectRepository.GetListAsync(x => projectIds.Contains(x.Id));
            
            // 创建映射字典
            var eventProjectToProjectDict = eventProjects.ToDictionary(x => x.Id, x => x.ProjectId);
            Dictionary<long, YD_Event.Core.Entities.Project> projectDict = projects.ToDictionary(x => x.Id, x => x);

            // 获取所有报名人员的 UserId
            var allAthleteUserIds = persons
                .Where(p => p.PersonType == YD_Event.Core.Enum.PersonType.Athlete && p.UserId > 0)
                .Select(p => p.UserId)
                .Distinct()
                .ToList();

            // 步骤1：通过运动员的 UserId 找到对应的 TeamId
            var teamIds = new List<long>();
            if (allAthleteUserIds.Any())
            {
                teamIds = await _teamMemberRepository.AsQueryable()
                    .Where(tm => allAthleteUserIds.Contains(tm.UserId) && !tm.DeleteMark)
                    .Select(tm => tm.TeamId)
                    .Distinct()
                    .ToListAsync();
            }

            // 步骤2：通过 TeamId 获取同团队的教练/领队的 UserId，并获取用户详情
            Dictionary<long, List<YD_Event.Core.Entities.AppUser>> teamLeadersDict = new();
            Dictionary<long, List<YD_Event.Core.Entities.AppUser>> teamCoachesDict = new();

            if (teamIds.Any())
            {
                var teamMembers = await _teamMemberRepository.AsQueryable()
                    .Where(tm => teamIds.Contains(tm.TeamId) && !tm.DeleteMark)
                    .ToListAsync();

                var coachLeaderUserIds = teamMembers
                    .Where(tm => tm.PersonType == YD_Event.Core.Enum.PersonType.Leader || 
                                 tm.PersonType == YD_Event.Core.Enum.PersonType.Coach)
                    .Select(tm => tm.UserId)
                    .Distinct()
                    .ToList();

                if (coachLeaderUserIds.Any())
                {
                    var coachLeaderUsers = await _appUserRepository.AsQueryable()
                        .Where(u => coachLeaderUserIds.Contains(u.Id) && !u.DeleteMark)
                        .ToListAsync();

                    var userDict = coachLeaderUsers.ToDictionary(u => u.Id);

                    // 按团队分组
                    foreach (var teamId in teamIds)
                    {
                        var teamLeaders = teamMembers
                            .Where(tm => tm.TeamId == teamId && tm.PersonType == YD_Event.Core.Enum.PersonType.Leader)
                            .Select(tm => userDict.TryGetValue(tm.UserId, out var user) ? user : null)
                            .Where(u => u != null)
                            .Cast<YD_Event.Core.Entities.AppUser>()
                            .ToList();

                        var teamCoaches = teamMembers
                            .Where(tm => tm.TeamId == teamId && tm.PersonType == YD_Event.Core.Enum.PersonType.Coach)
                            .Select(tm => userDict.TryGetValue(tm.UserId, out var user) ? user : null)
                            .Where(u => u != null)
                            .Cast<YD_Event.Core.Entities.AppUser>()
                            .ToList();

                        if (teamLeaders.Any())
                            teamLeadersDict[teamId] = teamLeaders;

                        if (teamCoaches.Any())
                            teamCoachesDict[teamId] = teamCoaches;
                    }
                }
            }

            foreach (var dto in result.Rows)
            {
                // 获取当前报名的所有人员
                var regPersons = persons.Where(p => p.RegistrationId == dto.Id).ToList();
                
                // 计算去重后的人数（按UserId去重）
                var uniqueUserIds = regPersons
                    .Where(p => p.PersonType == PersonType.Athlete && p.UserId > 0)
                    .Select(p => p.UserId)
                    .Distinct()
                    .ToList();
                
                // 更新TotalPersonCount为去重后的人数
                dto.TotalPersonCount = uniqueUserIds.Count > 0 ? uniqueUserIds.Count : regPersons.Count(p => p.PersonType == PersonType.Athlete);

                // 根据报名记录的 MerchantCertificationId 获取单位名称
                if (dto.MerchantCertificationId.HasValue && 
                    merchantNameDict.TryGetValue(dto.MerchantCertificationId.Value, out var unitName))
                {
                    dto.UnitName = unitName;
                }
                else
                {
                    dto.UnitName = null;
                }

                var myItems = items.Where(x => x.RegistrationId == dto.Id).ToList();
                dto.Items = new List<RegistrationItemDetailDto>();
                
                foreach (var item in myItems)
                {
                    var myPersons = persons.Where(p => p.RegistrationItemId == item.Id).ToList();
                    
                    // 判断项目类型
                    bool isIndividualProject = false;
                    if (eventProjectToProjectDict.TryGetValue(item.ProjectId, out var projectId) &&
                        projectDict.TryGetValue(projectId, out var project))
                    {
                        isIndividualProject = YD_Event.Core.Extensions.ProjectTypeExtensions.IsIndividualProject(project);
                    }
                    
                    if (isIndividualProject)
                    {
                        // 个人项目：为每个运动员创建一个条目，使用 EventRegistrationPerson.Id
                        foreach (var person in myPersons.Where(p => p.PersonType == PersonType.Athlete))
                        {
                            // 构造参与人信息字符串
                            var genderText = person.Gender switch
                            {
                                YD_Event.Core.Enum.Gender.Male => "男",
                                YD_Event.Core.Enum.Gender.Female => "女",
                                _ => "未知"
                            };
                            var mobile = person.User?.Mobile ?? person.Phone ?? "";
                            var personInfo = $"{person.Name}/{genderText}/{person.Age}/{mobile}";

                            var detail = new RegistrationItemDetailDto
                            {
                                Id = person.Id, // 使用 EventRegistrationPerson.Id
                                ProjectName = item.ProjectName,
                                GroupName = item.GroupName,
                                ParticipantInfo = personInfo
                            };
                            dto.Items.Add(detail);
                        }
                    }
                    else
                    {
                        // 团队项目：保持原有逻辑，使用 EventRegistrationItem.Id
                        // 构造参与人信息字符串，统一格式为：姓名/性别/年龄/手机号
                        var personInfo = string.Join(";", myPersons.Select(p => 
                        {
                            // 将性别转换为中文显示
                            var genderText = p.Gender switch
                            {
                                YD_Event.Core.Enum.Gender.Male => "男",
                                YD_Event.Core.Enum.Gender.Female => "女",
                                _ => "未知"
                            };
                            
                            // 获取手机号，优先使用关联用户信息，否则使用自身的 Phone 字段
                            var mobile = p.User?.Mobile ?? p.Phone ?? "";
                            
                            // 统一格式：姓名/性别/年龄/手机号
                            return $"{p.Name}/{genderText}/{p.Age}/{mobile}";
                        }));
                        if (personInfo.Length > 100) personInfo = personInfo.Substring(0, 97) + "..."; // 截断

                        var detail = new RegistrationItemDetailDto
                        {
                            Id = item.Id, // 使用 EventRegistrationItem.Id
                            ProjectName = item.ProjectName,
                            GroupName = item.GroupName,
                            ParticipantInfo = personInfo
                        };
                        dto.Items.Add(detail);
                    }
                }

                // 设置领队信息和教练信息 - 从团队中获取
                var regAthleteUserIds = regPersons
                    .Where(p => p.PersonType == YD_Event.Core.Enum.PersonType.Athlete && p.UserId > 0)
                    .Select(p => p.UserId)
                    .Distinct()
                    .ToList();

                // 获取这些运动员所属的团队
                var regTeamIds = new List<long>();
                if (regAthleteUserIds.Any())
                {
                    regTeamIds = await _teamMemberRepository.AsQueryable()
                        .Where(tm => regAthleteUserIds.Contains(tm.UserId) && !tm.DeleteMark)
                        .Select(tm => tm.TeamId)
                        .Distinct()
                        .ToListAsync();
                }

                // 收集所有相关团队的领队和教练
                var allLeaders = new List<YD_Event.Core.Entities.AppUser>();
                var allCoaches = new List<YD_Event.Core.Entities.AppUser>();

                foreach (var teamId in regTeamIds)
                {
                    if (teamLeadersDict.TryGetValue(teamId, out var leaders))
                        allLeaders.AddRange(leaders);
                    if (teamCoachesDict.TryGetValue(teamId, out var coaches))
                        allCoaches.AddRange(coaches);
                }

                // 去重
                allLeaders = allLeaders.GroupBy(l => l.Id).Select(g => g.First()).ToList();
                allCoaches = allCoaches.GroupBy(c => c.Id).Select(g => g.First()).ToList();

                // 如果从团队中没有找到，再回退到从报名人员中查找
                if (!allLeaders.Any())
                {
                    var regLeaders = regPersons.Where(p => p.PersonType == YD_Event.Core.Enum.PersonType.Leader).ToList();
                    allLeaders = regLeaders.Select(l => new YD_Event.Core.Entities.AppUser 
                    { 
                        Name = l.Name, 
                        Mobile = l.Phone,
                        Gender = l.Gender
                    }).ToList();
                }

                if (!allCoaches.Any())
                {
                    var regCoaches = regPersons.Where(p => p.PersonType == YD_Event.Core.Enum.PersonType.Coach).ToList();
                    allCoaches = regCoaches.Select(c => new YD_Event.Core.Entities.AppUser 
                    { 
                        Name = c.Name, 
                        Mobile = c.Phone,
                        Gender = c.Gender
                    }).ToList();
                }

                // 辅助函数：获取性别文本
                Func<YD_Event.Core.Enum.Gender, string> getGenderText = (gender) =>
                {
                    return gender switch
                    {
                        YD_Event.Core.Enum.Gender.Male => "男",
                        YD_Event.Core.Enum.Gender.Female => "女",
                        _ => "未知"
                    };
                };

                dto.TeamLeaderInfo = allLeaders.Any() 
                    ? string.Join(",", allLeaders.Select(l => $"{l.Name}/{getGenderText(l.Gender)}/{l.Mobile}")) 
                    : null;
                    
                dto.CoachInfo = allCoaches.Any() 
                    ? string.Join(",", allCoaches.Select(c => $"{c.Name}/{getGenderText(c.Gender)}/{c.Mobile}")) 
                    : null;
            }
        }
        return result;
    }

    /// <summary>
    /// 为报名记录创建订单（如果不存在）
    /// </summary>
    private async Task CreateOrderIfNotExistsAsync(EventRegistration registration, DateTime now)
    {
        // 检查是否已存在订单
        var existingOrder = await _orderRepository.GetFirstAsync(o => 
            o.RegistrationId == registration.Id && !o.DeleteMark);
        
        if (existingOrder == null)
        {
            // 不存在订单，先检查是否有订单号
            if (string.IsNullOrEmpty(registration.OrderNo))
            {
                registration.OrderNo = await _orderNoGeneratorService.GenerateOrderNoAsync();
                await _repository.UpdateAsync(registration);
            }
            
            // 获取赛事信息
            var eventInfo = await _eventInfoRepository.GetByIdAsync(registration.EventId);
            
            // 获取用户单位认证信息
            var certification = await _merchantCertificationRepository.GetFirstAsync(c => 
                c.UserId == registration.CreatedUserId && c.AuditStatus == AuditStatus.Pass && !c.DeleteMark);
            
            // 创建订单
            var order = new YD_Event.Core.Entities.Order
            {
                Id = _idGenerator.NewLong(),
                OrderNo = registration.OrderNo,
                OrderType = 1,
                MerchantId = eventInfo?.MerchantId,
                MerchantCertificationId = certification?.Id,
                EventId = registration.EventId,
                RegistrationId = registration.Id,
                OriginalAmount = registration.TotalAmount,
                ActualAmount = registration.TotalAmount,
                DiscountAmount = 0,
                CouponId = null,
                OrderStatus = OrderStatus.Paid,
                PaymentTime = now,
                CreatedTime = now,
                CreatedUserId = _authManager.UserId,
                UpdatedTime = now,
                UpdatedUserId = _authManager.UserId,
                Status = AvailabilityStatus.Enable
            };
            await _orderRepository.InsertAsync(order);
        }
        else
        {
            // 订单已存在，只更新状态为已支付
            if (existingOrder.OrderStatus != OrderStatus.Paid)
            {
                existingOrder.OrderStatus = OrderStatus.Paid;
                existingOrder.PaymentTime = now;
                existingOrder.UpdatedTime = now;
                existingOrder.UpdatedUserId = _authManager.UserId;
                await _orderRepository.UpdateAsync(existingOrder);
            }
        }
    }

    /// <summary>
    /// 批量审核
    /// </summary>
    [UnitOfWork]
    [DisplayName("批量审核")]
    public async Task BatchAudit(BatchAuditInput input)
    {
        if (input.Ids == null || !input.Ids.Any()) return;
        
        var now = DateTime.Now;
        
        // 如果审核通过（PaymentStatus = 1），先处理订单创建和更新
        if (input.PaymentStatus == 1)
        {
            // 获取需要更新的报名记录
            var registrations = await _repository.GetListAsync(x => input.Ids.Contains(x.Id));
            
            foreach (var registration in registrations)
            {
                // 确保订单存在
                await CreateOrderIfNotExistsAsync(registration, now);
                
                // 更新报名记录的支付状态
                registration.PaymentStatus = input.PaymentStatus;
                registration.ReviewRemark = input.ReviewRemark;
                registration.ReviewTime = now;
                registration.Reviewer = _authManager.Account;
                registration.PaymentTime = now;
                registration.UpdatedTime = now;
                registration.UpdatedUserId = _authManager.UserId;
                await _repository.UpdateAsync(registration);
            }
        }
        else
        {
            // 审核不通过，只更新状态
            await _repository.UpdateAsync(x => new EventRegistration 
            { 
                PaymentStatus = input.PaymentStatus,
                ReviewRemark = input.ReviewRemark,
                ReviewTime = now,
                Reviewer = _authManager.Account,
                UpdatedTime = now,
                UpdatedUserId = _authManager.UserId
            }, x => input.Ids.Contains(x.Id));
        }
    }

    /// <summary>
    /// 导出报名信息
    /// </summary>
    [DisplayName("导出报名")]
    public async Task<IActionResult> Export(RegistrationQueryInput input)
    {
        var registrations = await _repository.AsQueryable()
            .Where(x => !x.DeleteMark)
            .Where(x => (x.PaymentMethod == 2 && x.PaymentStatus == 1) || (x.PaymentMethod == 1 && (x.PaymentStatus == 0 || x.PaymentStatus == 1)))
            .WhereIF(input.EventId.HasValue, x => x.EventId == input.EventId)
            .WhereIF(input.RegistrationMode.HasValue, x => x.RegistrationMode == input.RegistrationMode)
            .WhereIF(!string.IsNullOrWhiteSpace(input.UnitName), x => x.TeamName.Contains(input.UnitName))
            .WhereIF(!string.IsNullOrWhiteSpace(input.UserName), x => x.ContactName.Contains(input.UserName))
            .WhereIF(!string.IsNullOrWhiteSpace(input.ContactPhone), x => x.ContactPhone.Contains(input.ContactPhone))
            .WhereIF(input.PaymentMethod.HasValue, x => x.PaymentMethod == input.PaymentMethod)
            .WhereIF(input.PaymentStatus.HasValue, x => x.PaymentStatus == input.PaymentStatus)
            .WhereIF(input.RegistrationTimeStart.HasValue, x => x.RegistrationTime >= input.RegistrationTimeStart)
            .WhereIF(input.RegistrationTimeEnd.HasValue, x => x.RegistrationTime <= input.RegistrationTimeEnd)
            .OrderBy(x => x.RegistrationMode, OrderByType.Asc)
            .OrderBy(x => x.RegistrationTime, OrderByType.Desc)
            .ToListAsync();

        if (!registrations.Any())
        {
            throw Oops.Bah("暂无数据可导出");
        }

        var regIds = registrations.Select(r => r.Id).ToList();

        var merchantCertIds = registrations
            .Where(r => r.MerchantCertificationId.HasValue)
            .Select(r => r.MerchantCertificationId.Value)
            .Distinct()
            .ToList();

        Dictionary<long, string> merchantNameDict = new Dictionary<long, string>();
        if (merchantCertIds.Any())
        {
            var merchantCerts = await _merchantCertificationRepository.AsQueryable()
                .Where(mc => merchantCertIds.Contains(mc.Id) && !mc.DeleteMark)
                .ToListAsync();
            merchantNameDict = merchantCerts.ToDictionary(mc => mc.Id, mc => mc.MerchantName);
        }

        var allPersons = await _personRepository.AsQueryable()
            .Includes(p => p.User)
            .Where(p => regIds.Contains(p.RegistrationId) && !p.DeleteMark)
            .ToListAsync();

        var athleteUserIds = allPersons
            .Where(p => p.PersonType == PersonType.Athlete && p.UserId > 0)
            .Select(p => p.UserId)
            .Distinct()
            .ToList();

        var allTeamMembers = new List<TeamMember>();
        Dictionary<long, List<YD_Event.Core.Entities.AppUser>> teamLeadersDict = new();
        Dictionary<long, List<YD_Event.Core.Entities.AppUser>> teamCoachesDict = new();

        if (athleteUserIds.Any())
        {
            allTeamMembers = await _teamMemberRepository.AsQueryable()
                .Where(tm => athleteUserIds.Contains(tm.UserId) && !tm.DeleteMark)
                .ToListAsync();

            var allTeamIds = allTeamMembers.Select(tm => tm.TeamId).Distinct().ToList();

            if (allTeamIds.Any())
            {
                var fullTeamMembers = await _teamMemberRepository.AsQueryable()
                    .Where(tm => allTeamIds.Contains(tm.TeamId) && !tm.DeleteMark)
                    .ToListAsync();

                var coachLeaderUserIds = fullTeamMembers
                    .Where(tm => tm.PersonType == PersonType.Leader || tm.PersonType == PersonType.Coach)
                    .Select(tm => tm.UserId)
                    .Distinct()
                    .ToList();

                if (coachLeaderUserIds.Any())
                {
                    var coachLeaderUsers = await _appUserRepository.AsQueryable()
                        .Where(u => coachLeaderUserIds.Contains(u.Id) && !u.DeleteMark)
                        .ToListAsync();
                    var userDict = coachLeaderUsers.ToDictionary(u => u.Id);

                    foreach (var teamId in allTeamIds)
                    {
                        var teamLeaders = fullTeamMembers
                            .Where(tm => tm.TeamId == teamId && tm.PersonType == PersonType.Leader)
                            .Select(tm => userDict.TryGetValue(tm.UserId, out var user) ? user : null)
                            .Where(u => u != null)
                            .Cast<YD_Event.Core.Entities.AppUser>()
                            .ToList();
                        var teamCoaches = fullTeamMembers
                            .Where(tm => tm.TeamId == teamId && tm.PersonType == PersonType.Coach)
                            .Select(tm => userDict.TryGetValue(tm.UserId, out var user) ? user : null)
                            .Where(u => u != null)
                            .Cast<YD_Event.Core.Entities.AppUser>()
                            .ToList();
                        if (teamLeaders.Any()) teamLeadersDict[teamId] = teamLeaders;
                        if (teamCoaches.Any()) teamCoachesDict[teamId] = teamCoaches;
                    }
                }
            }
        }

        var userToTeamIdsDict = allTeamMembers
            .GroupBy(tm => tm.UserId)
            .ToDictionary(g => g.Key, g => g.Select(tm => tm.TeamId).Distinct().ToList());

        ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
        using var package = new ExcelPackage();

        BuildTeamSheet(package, registrations, allPersons, merchantNameDict, teamLeadersDict, teamCoachesDict, userToTeamIdsDict);
        BuildPersonSheet(package, registrations, allPersons, merchantNameDict);

        var bytes = await package.GetAsByteArrayAsync();
        return new FileContentResult(bytes, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
        {
            FileDownloadName = $"报名信息_{DateTime.Now:yyyyMMddHHmmss}.xlsx"
        };
    }

    private void BuildTeamSheet(
        ExcelPackage package,
        List<EventRegistration> registrations,
        List<EventRegistrationPerson> allPersons,
        Dictionary<long, string> merchantNameDict,
        Dictionary<long, List<YD_Event.Core.Entities.AppUser>> teamLeadersDict,
        Dictionary<long, List<YD_Event.Core.Entities.AppUser>> teamCoachesDict,
        Dictionary<long, List<long>> userToTeamIdsDict)
    {
        var ws = package.Workbook.Worksheets.Add("队伍信息");

        string[] headers = { "类型", "参赛单位", "队伍名称/运动员名称", "领队", "联系方式", "教练", "联系方式", "人数", "缴费情况" };
        for (int i = 0; i < headers.Length; i++)
        {
            ws.Cells[1, i + 1].Value = headers[i];
        }

        var headerRange = ws.Cells[1, 1, 1, headers.Length];
        headerRange.Style.Font.Bold = true;
        headerRange.Style.Font.Size = 14;
        headerRange.Style.Font.Name = "宋体";
        headerRange.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
        headerRange.Style.VerticalAlignment = ExcelVerticalAlignment.Center;
        headerRange.Style.Fill.PatternType = ExcelFillStyle.Solid;
        headerRange.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(217, 226, 243));
        headerRange.Style.Border.Top.Style = ExcelBorderStyle.Thin;
        headerRange.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
        headerRange.Style.Border.Left.Style = ExcelBorderStyle.Thin;
        headerRange.Style.Border.Right.Style = ExcelBorderStyle.Thin;
        ws.Row(1).Height = 30;

        double[] colWidths = { 13.4, 44.6, 38.5, 23.1, 30.4, 13, 24.9, 15.3, 22.7 };
        for (int i = 0; i < colWidths.Length; i++)
        {
            ws.Column(i + 1).Width = colWidths[i];
        }

        int row = 2;
        var personRegGroups = allPersons.GroupBy(p => p.RegistrationId).ToDictionary(g => g.Key, g => g.ToList());

        foreach (var reg in registrations)
        {
            var regPersons = personRegGroups.TryGetValue(reg.Id, out var rp) ? rp : new List<EventRegistrationPerson>();
            var athletes = regPersons.Where(p => p.PersonType == PersonType.Athlete).ToList();
            bool isPersonal = reg.RegistrationMode == 1;
            string type = isPersonal ? "个人" : "单位";

            string unitName = "/";
            string teamName = reg.TeamName ?? "";
            string leaderName = reg.ContactName ?? "";
            string leaderPhone = reg.ContactPhone ?? "";
            string coachNames = "/";
            string coachPhones = "/";
            int personCount = 1;
            string paymentStatus = reg.PaymentStatus == 1 ? "已支付" : "未支付";

            if (isPersonal)
            {
                var athlete = athletes.FirstOrDefault();
                if (athlete != null)
                {
                    teamName = athlete.Name ?? reg.TeamName ?? "";
                    leaderName = athlete.Name ?? reg.ContactName ?? "";
                    leaderPhone = athlete.User?.Mobile ?? athlete.Phone ?? reg.ContactPhone ?? "";
                }
                personCount = 1;
            }
            else
            {
                if (reg.MerchantCertificationId.HasValue && merchantNameDict.TryGetValue(reg.MerchantCertificationId.Value, out var un))
                {
                    unitName = un;
                }

                var regAthleteUserIds = athletes.Where(p => p.UserId > 0).Select(p => p.UserId).Distinct().ToList();

                var regTeamIds = new HashSet<long>();
                foreach (var uid in regAthleteUserIds)
                {
                    if (userToTeamIdsDict.TryGetValue(uid, out var tids))
                    {
                        foreach (var tid in tids) regTeamIds.Add(tid);
                    }
                }

                var allLeaders = new List<YD_Event.Core.Entities.AppUser>();
                var allCoaches = new List<YD_Event.Core.Entities.AppUser>();

                foreach (var tid in regTeamIds)
                {
                    if (teamLeadersDict.TryGetValue(tid, out var leaders)) allLeaders.AddRange(leaders);
                    if (teamCoachesDict.TryGetValue(tid, out var coaches)) allCoaches.AddRange(coaches);
                }

                allLeaders = allLeaders.GroupBy(l => l.Id).Select(g => g.First()).ToList();
                allCoaches = allCoaches.GroupBy(c => c.Id).Select(g => g.First()).ToList();

                var regLeaders = regPersons.Where(p => p.PersonType == PersonType.Leader).ToList();
                if (!allLeaders.Any() && regLeaders.Any())
                {
                    allLeaders = regLeaders.Select(l => new YD_Event.Core.Entities.AppUser { Name = l.Name, Mobile = l.Phone }).ToList();
                }

                var regCoaches = regPersons.Where(p => p.PersonType == PersonType.Coach).ToList();
                if (!allCoaches.Any() && regCoaches.Any())
                {
                    allCoaches = regCoaches.Select(c => new YD_Event.Core.Entities.AppUser { Name = c.Name, Mobile = c.Phone }).ToList();
                }

                if (allLeaders.Any())
                {
                    leaderName = string.Join("\n", allLeaders.Select(l => l.Name ?? "").Where(n => !string.IsNullOrEmpty(n)));
                    leaderPhone = string.Join("\n", allLeaders.Select(l => l.Mobile ?? "").Where(m => !string.IsNullOrEmpty(m)));
                }

                if (allCoaches.Any())
                {
                    coachNames = string.Join("\n", allCoaches.Select(c => c.Name ?? "").Where(n => !string.IsNullOrEmpty(n)));
                    coachPhones = string.Join("\n", allCoaches.Select(c => c.Mobile ?? "").Where(m => !string.IsNullOrEmpty(m)));
                }

                var uniqueIds = athletes.Where(p => p.UserId > 0).Select(p => p.UserId).Distinct().Count();
                personCount = uniqueIds > 0 ? uniqueIds : athletes.Count;
                if (personCount == 0) personCount = reg.TotalPersonCount;
            }

            ws.Cells[row, 1].Value = type;
            ws.Cells[row, 2].Value = unitName;
            ws.Cells[row, 3].Value = teamName;
            ws.Cells[row, 4].Value = leaderName;
            ws.Cells[row, 5].Value = leaderPhone;
            ws.Cells[row, 6].Value = coachNames;
            ws.Cells[row, 7].Value = coachPhones;
            ws.Cells[row, 8].Value = personCount;
            ws.Cells[row, 9].Value = paymentStatus;

            var dataRange = ws.Cells[row, 1, row, headers.Length];
            dataRange.Style.Font.Size = 14;
            dataRange.Style.Font.Name = "宋体";
            dataRange.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
            dataRange.Style.VerticalAlignment = ExcelVerticalAlignment.Center;
            dataRange.Style.WrapText = true;
            dataRange.Style.Border.Top.Style = ExcelBorderStyle.Thin;
            dataRange.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
            dataRange.Style.Border.Left.Style = ExcelBorderStyle.Thin;
            dataRange.Style.Border.Right.Style = ExcelBorderStyle.Thin;

            ws.Row(row).Height = 30;
            row++;
        }
    }

    private void BuildPersonSheet(
        ExcelPackage package,
        List<EventRegistration> registrations,
        List<EventRegistrationPerson> allPersons,
        Dictionary<long, string> merchantNameDict)
    {
        var ws = package.Workbook.Worksheets.Add("人员信息");

        string[] headers = { "类型", "参赛单位", "参赛队伍", "参赛队员", "身份证号", "出生年月日", "性别", "项目", "组别" };
        for (int i = 0; i < headers.Length; i++)
        {
            ws.Cells[1, i + 1].Value = headers[i];
        }

        var headerRange = ws.Cells[1, 1, 1, headers.Length];
        headerRange.Style.Font.Bold = true;
        headerRange.Style.Font.Size = 14;
        headerRange.Style.Font.Name = "宋体";
        headerRange.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
        headerRange.Style.VerticalAlignment = ExcelVerticalAlignment.Center;
        headerRange.Style.Fill.PatternType = ExcelFillStyle.Solid;
        headerRange.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(217, 226, 243));
        headerRange.Style.Border.Top.Style = ExcelBorderStyle.Thin;
        headerRange.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
        headerRange.Style.Border.Left.Style = ExcelBorderStyle.Thin;
        headerRange.Style.Border.Right.Style = ExcelBorderStyle.Thin;
        ws.Row(1).Height = 30;

        double[] colWidths = { 13.4, 30.4, 29.7, 26.4, 32.1, 23.1, 13, 56.8, 23.1 };
        for (int i = 0; i < colWidths.Length; i++)
        {
            ws.Column(i + 1).Width = colWidths[i];
        }

        ws.Column(5).Style.Numberformat.Format = "@";

        int row = 2;
        var personGroups = allPersons
            .Where(p => p.PersonType == PersonType.Athlete)
            .GroupBy(p => p.RegistrationId)
            .ToDictionary(g => g.Key, g => g.ToList());

        foreach (var reg in registrations)
        {
            bool isPersonal = reg.RegistrationMode == 1;
            string type = isPersonal ? "个人" : "单位";

            string unitName = "/";
            if (!isPersonal && reg.MerchantCertificationId.HasValue && merchantNameDict.TryGetValue(reg.MerchantCertificationId.Value, out var un))
            {
                unitName = un;
            }
            string teamName = reg.TeamName ?? "/";

            if (!personGroups.TryGetValue(reg.Id, out var athletes)) continue;

            var personProjectGroups = new Dictionary<string, List<EventRegistrationPerson>>();
            foreach (var athlete in athletes)
            {
                string key = athlete.UserId > 0
                    ? $"u_{athlete.UserId}"
                    : $"c_{(athlete.IdCard ?? athlete.Name ?? "")}_{athlete.Name ?? ""}";
                if (!personProjectGroups.ContainsKey(key))
                    personProjectGroups[key] = new List<EventRegistrationPerson>();
                personProjectGroups[key].Add(athlete);
            }

            foreach (var kvp in personProjectGroups)
            {
                var projects = kvp.Value;
                var firstPerson = projects.OrderBy(p => p.Id).First();

                string certNumber = firstPerson.IdCard ?? "";
                string personName = firstPerson.Name ?? "";
                bool isIdCard = !string.IsNullOrEmpty(certNumber) && certNumber.Length == 18;

                for (int projIdx = 0; projIdx < projects.Count; projIdx++)
                {
                    var projPerson = projects[projIdx];
                    bool isFirstRow = projIdx == 0;

                    if (isFirstRow)
                    {
                        ws.Cells[row, 1].Value = type;
                        ws.Cells[row, 2].Value = unitName;
                        ws.Cells[row, 3].Value = teamName;
                        ws.Cells[row, 4].Value = personName;
                        ws.Cells[row, 5].Value = certNumber;

                        if (isIdCard)
                        {
                            ws.Cells[row, 6].Formula = $"=DATE(MID(E{row},7,4),MID(E{row},11,2),MID(E{row},13,2))";
                            ws.Cells[row, 6].Style.Numberformat.Format = "yyyy-MM-dd";
                            ws.Cells[row, 7].Formula = $"=IF(MOD(MID($E{row},17,1),2),\"男\",\"女\")";
                        }
                        else
                        {
                            string genderText = firstPerson.Gender switch
                            {
                                Gender.Male => "男",
                                Gender.Female => "女",
                                _ => ""
                            };
                            ws.Cells[row, 6].Value = firstPerson.BirthDate.ToString("yyyy-MM-dd");
                            ws.Cells[row, 7].Value = genderText;
                        }
                    }

                    ws.Cells[row, 8].Value = projPerson.ProjectName ?? "";
                    ws.Cells[row, 9].Value = projPerson.GroupName ?? "";

                    var dataRange = ws.Cells[row, 1, row, headers.Length];
                    dataRange.Style.Font.Size = 14;
                    dataRange.Style.Font.Name = "宋体";
                    dataRange.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
                    dataRange.Style.VerticalAlignment = ExcelVerticalAlignment.Center;
                    dataRange.Style.WrapText = true;
                    dataRange.Style.Border.Top.Style = ExcelBorderStyle.Thin;
                    dataRange.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
                    dataRange.Style.Border.Left.Style = ExcelBorderStyle.Thin;
                    dataRange.Style.Border.Right.Style = ExcelBorderStyle.Thin;

                    ws.Row(row).Height = 35;
                    row++;
                }
            }
        }
    }

    /// <summary>
    /// 获取素材下载链接
    /// </summary>
    [DisplayName("获取素材下载链接")]
    public async Task<List<string>> MaterialUrls(List<long> ids)
    {
        if (ids == null || !ids.Any()) return new List<string>();
        
        return await _repository.AsQueryable()
            .Where(x => ids.Contains(x.Id) && !string.IsNullOrEmpty(x.MaterialUrl))
            .Select(x => x.MaterialUrl)
            .ToListAsync();
    }

    /// <summary>
    /// 单条支付审核
    /// </summary>
    [UnitOfWork]
    [DisplayName("单条支付审核")]
    public async Task PaymentAudit(PaymentAuditInput input)
    {
        var registration = await _repository.GetByIdAsync(input.RegistrationId);
        if (registration == null) throw Oops.Bah("报名记录不存在");

        if (registration.PaymentStatus != 0)
        {
            throw Oops.Bah("该记录已完成支付审核，无需重复操作");
        }

        var now = DateTime.Now;
        registration.PaymentStatus = input.PaymentStatus;
        registration.ReviewRemark = input.ReviewRemark;
        registration.ReviewTime = now;
        registration.Reviewer = _authManager.Account;
        registration.UpdatedTime = now;
        registration.UpdatedUserId = _authManager.UserId;

        if (input.PaymentStatus == 1)
        {
            registration.PaymentTime = now;
            // 确保订单存在
            await CreateOrderIfNotExistsAsync(registration, now);
        }

        await _repository.UpdateAsync(registration);
    }

    /// <summary>
    /// 批量支付审核
    /// </summary>
    [UnitOfWork]
    [DisplayName("批量支付审核")]
    public async Task BatchPaymentAudit(BatchPaymentAuditInput input)
    {
        if (input.Ids == null || !input.Ids.Any()) return;

        var registrations = await _repository.GetListAsync(x => input.Ids.Contains(x.Id));
        if (!registrations.Any()) throw Oops.Bah("未找到有效的报名记录");

        var invalidRegistrations = registrations
            .Where(r => r.PaymentStatus != 0)
            .ToList();
        if (invalidRegistrations.Any())
        {
            throw Oops.Bah("存在非待审核状态的记录，无法进行支付审核");
        }

        var now = DateTime.Now;
        
        // 如果审核通过（PaymentStatus = 1），先处理订单创建
        if (input.PaymentStatus == 1)
        {
            foreach (var registration in registrations)
            {
                // 确保订单存在
                await CreateOrderIfNotExistsAsync(registration, now);
            }
        }
        
        // 更新报名记录的状态
        await _repository.UpdateAsync(x => new EventRegistration
        {
            PaymentStatus = input.PaymentStatus,
            ReviewRemark = input.ReviewRemark,
            ReviewTime = now,
            Reviewer = _authManager.Account,
            UpdatedTime = now,
            UpdatedUserId = _authManager.UserId,
            PaymentTime = input.PaymentStatus == 1 ? now : x.PaymentTime
        }, x => input.Ids.Contains(x.Id));
    }

    /// <summary>
    /// 获取报名统计数据
    /// </summary>
    [DisplayName("获取报名统计数据")]
    [HttpGet("stats/{eventId}")]
    public async Task<RegistrationStatsOutput> GetStats(long eventId)
    {
        var stats = new RegistrationStatsOutput();

        // 获取赛事项目信息
        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));
        var eventProjectToProjectDict = eventProjects.ToDictionary(x => x.Id, x => x.ProjectId);
        var projectDict = projects.ToDictionary(x => x.Id, x => x);

        // 统计符合条件的所有运动员（与赛事编排页面保持一致的筛选规则）
        var athletes = await _personRepository.AsQueryable()
            .InnerJoin<EventRegistration>((p, r) => p.RegistrationId == r.Id)
            .InnerJoin<EventRegistrationItem>((p, r, item) => p.RegistrationItemId == item.Id)
            .Where((p, r, item) => r.EventId == eventId
                && !r.DeleteMark // 排除软删除的报名记录
                // 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
            .Select((p, r, item) => new
            {
                PersonId = p.Id,
                EventProjectId = p.ProjectId,
                GroupName = p.GroupName,
                TeamName = item.TeamName ?? r.TeamName,
                RegistrationItemId = p.RegistrationItemId,
                UserId = p.UserId,
                RegistrationId = r.Id,
                PaymentMethod = r.PaymentMethod,
                PaymentStatus = r.PaymentStatus
            })
            .ToListAsync();

        if (!athletes.Any())
        {
            // 待审核数量：线下支付(1)且支付状态为0(待审核)
            var pendingRegistrations = await _repository.GetListAsync(x =>
                x.EventId == eventId && !x.DeleteMark && x.PaymentMethod == 1 && x.PaymentStatus == 0);
            stats.PendingReview = pendingRegistrations.Count;
            return stats;
        }

        // 计算总人数（所有符合条件的运动员）
        stats.TotalParticipants = athletes.Select(x => x.UserId > 0 ? x.UserId : x.PersonId).Distinct().Count();

        // 分别计算个人项目和团队项目的统计数据
        var individualSet = new HashSet<long>();
        var teamSet = new HashSet<(long EventProjectId, string GroupName, string TeamName, long RegistrationItemId)>();
        var teamPersonSet = new HashSet<long>();

        foreach (var athlete in athletes)
        {
            // 判断项目类型
            bool isIndividualProject = false;
            if (eventProjectToProjectDict.TryGetValue(athlete.EventProjectId, out var projectId) &&
                projectDict.TryGetValue(projectId, out var project))
            {
                isIndividualProject = YD_Event.Core.Extensions.ProjectTypeExtensions.IsIndividualProject(project);
            }

            var personKey = athlete.UserId > 0 ? athlete.UserId : athlete.PersonId;

            if (isIndividualProject)
            {
                // 个人项目：统计人数
                individualSet.Add(personKey);
            }
            else
            {
                // 团队项目：统计团队数（与赛事编排一致，按 EventProjectId、GroupName、TeamName、RegistrationItemId 分组）
                if (!string.IsNullOrEmpty(athlete.TeamName))
                {
                    teamSet.Add((
                        athlete.EventProjectId,
                        athlete.GroupName ?? "",
                        athlete.TeamName,
                        athlete.RegistrationItemId
                    ));
                }
                
                // 团队项目人数
                teamPersonSet.Add(personKey);
            }
        }

        stats.IndividualParticipants = individualSet.Count;
        stats.TeamCount = teamSet.Count;
        stats.TeamParticipants = teamPersonSet.Count;

        // 待审核数量：线下支付(1)且支付状态为0(待审核)
        var pendingRegs = await _repository.GetListAsync(x =>
            x.EventId == eventId && !x.DeleteMark && x.PaymentMethod == 1 && x.PaymentStatus == 0);
        stats.PendingReview = pendingRegs.Count;

        return stats;
    }
}