using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Options;
using Microsoft.Extensions.Logging;
using YD_Event.Application.Client.Dtos;
using YD_Event.Application.Event;
using YD_Event.Application.Event.Dtos;
using YD_Event.Core.Entities;
using YD_Event.Core.Enum;
using Easy.Core;
using YD_Event.Core.Infrastructure.WeChat;
using YD_Event.Core.Infrastructure.WeChat.Dto;
using YD_Event.Core.Options;
using YD_Event.Core.Domain.Pricing;
using YD_Event.Core.Domain.Pricing.Models;
using YD_Event.Core.Domain;
using SqlSugar;
using Furion.DatabaseAccessor;
using Microsoft.AspNetCore.Authorization;
using Furion.FriendlyException;
using System.Security.Claims;
using System.Text.Json;
using System.IO;

namespace YD_Event.Application.Client;

/// <summary>
/// 小程序-赛事接口
/// </summary>
[ApiDescriptionSettings("微信小程序接口")]
[Authorize]
public class EventClientController : IDynamicApiController
{
    private readonly ISqlSugarRepository<EventInfo> _eventRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Project> _projectRepository;
    private readonly ISqlSugarRepository<EventProject> _eventProjectRepository;
    private readonly ISqlSugarRepository<ProjectGroup> _groupRepository;
    private readonly ISqlSugarRepository<EventProjectGroup> _eventProjectGroupRepository;
    private readonly ISqlSugarRepository<EventRegistration> _registrationRepository;
    private readonly ISqlSugarRepository<EventRegistrationItem> _registrationItemRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Banner> _bannerRepository;
    private readonly ISqlSugarRepository<EventUnit> _unitRepository;
    private readonly ISqlSugarRepository<EventRegistrationPerson> _personRepository;
    private readonly ISqlSugarRepository<EventRegistrationLimit> _limitRepository;
    private readonly ISqlSugarRepository<EventProjectRegistrationLimit> _projectLimitRepository;
    private readonly ISqlSugarRepository<EventFeeConfig> _feeConfigRepository;
    private readonly ISqlSugarRepository<WeChatPayConfig> _weChatPayConfigRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Merchant> _merchantRepository;
    private readonly ISqlSugarRepository<PointsRule> _pointsRuleRepository;
    private readonly ISqlSugarRepository<PointsRuleDetail> _pointsRuleDetailRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.AppUser> _appUserRepository;
    private readonly ISqlSugarRepository<SysProvince> _provinceRepository;
    private readonly ISqlSugarRepository<SysCity> _cityRepository;
    private readonly ISqlSugarRepository<SysDistrict> _districtRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Order> _orderRepository;
    private readonly ISqlSugarRepository<MerchantCertification> _merchantCertificationRepository;
    private readonly ISqlSugarRepository<EventRegistrationPayment> _paymentRepository;
    private readonly ISqlSugarRepository<RefundRecord> _refundRecordRepository;
    private readonly ISqlSugarRepository<RefundConfig> _refundConfigRepository;
    private readonly IHttpContextAccessor _httpContextAccessor;
    private readonly IIdGenerator _idGenerator;
    private readonly WeChatPayService _weChatPayService;
    private readonly IOptionsMonitor<WechatTenpayClientOptions> _wechatTenpayClientOptionsMonitor;
    private readonly ILogger<EventClientController> _logger;
    private readonly OrderNoGeneratorService _orderNoGeneratorService;
    private readonly YD_Event.Application.Banner.BannerService _bannerService;
    private readonly UnifiedRegistrationService _unifiedRegistrationService;
    private readonly YD_Event.Application.Refund.RefundConfigService _refundConfigService;

    public EventClientController(
        ISqlSugarRepository<EventInfo> eventRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Project> projectRepository,
        ISqlSugarRepository<EventProject> eventProjectRepository,
        ISqlSugarRepository<ProjectGroup> groupRepository,
        ISqlSugarRepository<EventProjectGroup> eventProjectGroupRepository,
        ISqlSugarRepository<EventRegistration> registrationRepository,
        ISqlSugarRepository<EventRegistrationItem> registrationItemRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Banner> bannerRepository,
        ISqlSugarRepository<EventUnit> unitRepository,
        ISqlSugarRepository<EventRegistrationPerson> personRepository,
        ISqlSugarRepository<EventRegistrationLimit> limitRepository,
        ISqlSugarRepository<EventProjectRegistrationLimit> projectLimitRepository,
        ISqlSugarRepository<EventFeeConfig> feeConfigRepository,
        ISqlSugarRepository<WeChatPayConfig> weChatPayConfigRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Merchant> merchantRepository,
        ISqlSugarRepository<PointsRule> pointsRuleRepository,
        ISqlSugarRepository<PointsRuleDetail> pointsRuleDetailRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.AppUser> appUserRepository,
        ISqlSugarRepository<SysProvince> provinceRepository,
        ISqlSugarRepository<SysCity> cityRepository,
        ISqlSugarRepository<SysDistrict> districtRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Order> orderRepository,
        ISqlSugarRepository<MerchantCertification> merchantCertificationRepository,
        ISqlSugarRepository<EventRegistrationPayment> paymentRepository,
        ISqlSugarRepository<RefundRecord> refundRecordRepository,
        ISqlSugarRepository<RefundConfig> refundConfigRepository,
        IHttpContextAccessor httpContextAccessor,
        IIdGenerator idGenerator,
        WeChatPayService weChatPayService,
        IOptionsMonitor<WechatTenpayClientOptions> wechatTenpayClientOptionsMonitor,
        ILogger<EventClientController> logger,
        OrderNoGeneratorService orderNoGeneratorService,
        YD_Event.Application.Banner.BannerService bannerService,
        UnifiedRegistrationService unifiedRegistrationService,
        YD_Event.Application.Refund.RefundConfigService refundConfigService)
    {
        _eventRepository = eventRepository;
        _projectRepository = projectRepository;
        _eventProjectRepository = eventProjectRepository;
        _groupRepository = groupRepository;
        _eventProjectGroupRepository = eventProjectGroupRepository;
        _registrationRepository = registrationRepository;
        _registrationItemRepository = registrationItemRepository;
        _bannerRepository = bannerRepository;
        _unitRepository = unitRepository;
        _personRepository = personRepository;
        _limitRepository = limitRepository;
        _projectLimitRepository = projectLimitRepository;
        _feeConfigRepository = feeConfigRepository;
        _weChatPayConfigRepository = weChatPayConfigRepository;
        _merchantRepository = merchantRepository;
        _pointsRuleRepository = pointsRuleRepository;
        _pointsRuleDetailRepository = pointsRuleDetailRepository;
        _appUserRepository = appUserRepository;
        _provinceRepository = provinceRepository;
        _cityRepository = cityRepository;
        _districtRepository = districtRepository;
        _orderRepository = orderRepository;
        _merchantCertificationRepository = merchantCertificationRepository;
        _paymentRepository = paymentRepository;
        _refundRecordRepository = refundRecordRepository;
        _refundConfigRepository = refundConfigRepository;
        _httpContextAccessor = httpContextAccessor;
        _idGenerator = idGenerator;
        _weChatPayService = weChatPayService;
        _wechatTenpayClientOptionsMonitor = wechatTenpayClientOptionsMonitor;
        _logger = logger;
        _orderNoGeneratorService = orderNoGeneratorService;
        _bannerService = bannerService;
        _unifiedRegistrationService = unifiedRegistrationService;
        _refundConfigService = refundConfigService;
    }

    private long GetCurrentUserId()
    {
        var userIdStr = _httpContextAccessor.HttpContext?.User?.FindFirst(AuthClaimsConst.AuthIdKey)?.Value;
        if (string.IsNullOrEmpty(userIdStr) || !long.TryParse(userIdStr, out long userId))
        {
            throw Oops.Bah("未登录或登录已失效");
        }
        return userId;
    }

    /// <summary>
    /// 获取轮播图列表
    /// </summary>
    /// <returns></returns>
    [HttpGet("banners")]
    [AllowAnonymous]
    [DisplayName("获取轮播图列表")]
    public async Task<List<BannerDto>> GetBannerList()
    {
        var list = await _bannerService.GetList();

        return list.Select(b => new BannerDto
        {
            Title = b.Title,
            ImageUrl = b.ImageUrl,
            LinkType = b.LinkType,
            LinkUrl = b.LinkUrl,
            EventId = b.EventId
        }).ToList();
    }

    /// <summary>
    /// 获取赛事列表
    /// </summary>
    /// <param name="input">查询参数</param>
    /// <returns></returns>
    [HttpGet("list")]
    [AllowAnonymous]
    [DisplayName("获取赛事列表")]
    public async Task<PageResult<EventListDto>> GetEventList([FromQuery] EventClientQueryInput input)
    {
        var query = _eventRepository.AsQueryable()
            .Where(e => !e.DeleteMark && e.Status == AvailabilityStatus.Enable)
            .WhereIF(!string.IsNullOrEmpty(input.Keyword), e => e.EventName.Contains(input.Keyword))
            .WhereIF(input.EventType.HasValue, e => e.EventType == input.EventType)
            .WhereIF(input.ChargeMode.HasValue, e => e.ChargeMode == input.ChargeMode)
            .WhereIF(input.Status > 0, e => e.EventStatus == (EventStatus)input.Status);

        query = query.OrderByDescending(e => e.CreatedTime);

        var list = await query.ToPagedListAsync(input);

        // 获取所有需要的省市区信息
        var provinceIds = list.Rows.Where(e => e.ProvinceId.HasValue).Select(e => e.ProvinceId.Value).Distinct().ToList();
        var cityIds = list.Rows.Where(e => e.CityId.HasValue).Select(e => e.CityId.Value).Distinct().ToList();
        var districtIds = list.Rows.Where(e => e.DistrictId.HasValue).Select(e => e.DistrictId.Value).Distinct().ToList();

        var provinces = provinceIds.Any() 
            ? await _provinceRepository.AsQueryable().Where(p => provinceIds.Contains(p.Id) && !p.DeleteMark).ToListAsync() 
            : new List<SysProvince>();
        var cities = cityIds.Any() 
            ? await _cityRepository.AsQueryable().Where(c => cityIds.Contains(c.Id) && !c.DeleteMark).ToListAsync() 
            : new List<SysCity>();
        var districts = districtIds.Any() 
            ? await _districtRepository.AsQueryable().Where(d => districtIds.Contains(d.Id) && !d.DeleteMark).ToListAsync() 
            : new List<SysDistrict>();

        var result = new PageResult<EventListDto>
        {
            PageNo = list.PageNo,
            PageSize = list.PageSize,
            Total = list.Total,
            Pages = list.Pages,
            Rows = list.Rows.Select(e => 
            {
                var provinceName = e.ProvinceId.HasValue 
                    ? provinces.FirstOrDefault(p => p.Id == e.ProvinceId.Value)?.ProvinceName ?? "" 
                    : "";
                var cityName = e.CityId.HasValue 
                    ? cities.FirstOrDefault(c => c.Id == e.CityId.Value)?.CityName ?? "" 
                    : "";
                var districtName = e.DistrictId.HasValue 
                    ? districts.FirstOrDefault(d => d.Id == e.DistrictId.Value)?.DistrictName ?? "" 
                    : "";
                
                return new EventListDto
                {
                    Id = e.Id,
                    EventName = e.EventName,
                    CoverImage = e.CoverImage,
                    EventStatus = e.EventStatus,
                    RegistrationStartTime = e.RegistrationStartTime,
                    RegistrationEndTime = e.RegistrationEndTime,
                    MatchStartTime = e.MatchStartTime,
                    MatchEndTime = e.MatchEndTime,
                    Address = $"{provinceName}{cityName}{districtName}{e.DetailAddress}"
                };
            }).ToList()
        };

        return result;
    }

    /// <summary>
    /// 获取赛事详情
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    [HttpGet("{id}")]
    [AllowAnonymous]
    [DisplayName("获取赛事详情")]
    public async Task<EventDetailDto> GetEventDetail(long id)
    {
        var evt = await _eventRepository.GetFirstAsync(e => e.Id == id && !e.DeleteMark);
        if (evt == null) throw Oops.Bah("赛事不存在");

        bool isRegistered = false;
        
        try
        {
            var userId = GetCurrentUserId();
            isRegistered = await _registrationRepository.IsAnyAsync(r => 
                r.EventId == id && r.CreatedUserId == userId && r.PaymentStatus != 4 && r.PaymentStatus == 1);
        }
        catch
        {
            isRegistered = false;
        }

        var feeConfig = await _feeConfigRepository.GetFirstAsync(f => f.EventId == id && !f.DeleteMark);

        string provinceName = "";
        string cityName = "";
        string districtName = "";
        
        if (evt.ProvinceId.HasValue && evt.ProvinceId > 0)
        {
            var province = await _provinceRepository.GetFirstAsync(p => p.Id == evt.ProvinceId.Value && !p.DeleteMark);
            if (province != null) provinceName = province.ProvinceName;
        }
        if (evt.CityId.HasValue && evt.CityId > 0)
        {
            var city = await _cityRepository.GetFirstAsync(c => c.Id == evt.CityId.Value && !c.DeleteMark);
            if (city != null) cityName = city.CityName;
        }
        if (evt.DistrictId.HasValue && evt.DistrictId > 0)
        {
            var district = await _districtRepository.GetFirstAsync(d => d.Id == evt.DistrictId.Value && !d.DeleteMark);
            if (district != null) districtName = district.DistrictName;
        }

        PointsRuleDto? pointsRuleDetail = null;
        if (evt.PointsRuleId.HasValue)
        {
            var pointsRuleEntity = await _pointsRuleRepository.GetFirstAsync(r => r.Id == evt.PointsRuleId.Value && !r.DeleteMark);
            if (pointsRuleEntity != null)
            {
                var details = await _pointsRuleDetailRepository.AsQueryable()
                    .Where(d => d.PointsRuleId == pointsRuleEntity.Id && !d.DeleteMark)
                    .ToListAsync();
                
                pointsRuleDetail = new PointsRuleDto
                {
                    RuleName = pointsRuleEntity.RuleName,
                    ParticipationPoints = pointsRuleEntity.ParticipationPoints,
                    Remark = pointsRuleEntity.Remark,
                    Details = details.Select(d => new PointsRuleDetailDto
                    {
                        StartRank = d.StartRank,
                        EndRank = d.EndRank,
                        Points = d.Points
                    }).ToList()
                };
            }
        }

        var eventProjects = await _eventProjectRepository.AsQueryable()
            .Where(ep => ep.EventId == id)
            .ToListAsync();

        var eventProjectIds = eventProjects.Select(ep => ep.Id).Distinct().ToList();
        var projectIds = eventProjects.Select(ep => ep.ProjectId).Distinct().ToList();

        var baseProjects = await _projectRepository.AsQueryable()
            .Where(p => projectIds.Contains(p.Id) && !p.DeleteMark && p.Status == AvailabilityStatus.Enable)
            .Select(p => new {
                p.Id,
                p.Name,
                p.ProjectType
            })
            .ToListAsync();

        var baseGroups = await _groupRepository.AsQueryable()
            .Where(g => projectIds.Contains(g.ProjectId) && !g.DeleteMark)
            .ToListAsync();

        var eventProjectGroups = await _eventProjectGroupRepository.AsQueryable()
            .Where(epg => eventProjectIds.Contains(epg.EventProjectId) && !epg.DeleteMark)
            .ToListAsync();

        var projectLimits = await _projectLimitRepository.AsQueryable()
            .Where(pl => pl.EventId == id && !pl.DeleteMark)
            .ToListAsync();

        var units = await _unitRepository.AsQueryable()
            .Where(u => u.EventId == id && !u.DeleteMark)
            .OrderBy(u => u.Sort)
            .ToListAsync();

        var limit = await _limitRepository.GetFirstAsync(l => l.EventId == id && !l.DeleteMark);

        string refundRule = "开赛前7天扣除金额5%，3-7天扣除金额10%，3天内扣除金额20%";
        string pointsRule = "参与积分：5积分；名次积分：1-8名 15积分，9-20名 10积分";
        
        // 优先从 RefundConfig 表读取配置并生成描述文本
        try
        {
            var refundConfigs = await _refundConfigService.GetList();
            var enabledConfigs = refundConfigs.Where(x => x.Status == Core.Enum.AvailabilityStatus.Enable).OrderBy(x => x.DayStart).ToList();
            if (enabledConfigs.Any())
            {
                var ruleParts = new List<string>();
                foreach (var config in enabledConfigs)
                {
                    if (config.DayEnd >= 999)
                    {
                        ruleParts.Add($"开赛前{config.DayStart}天及以上扣除金额{Math.Round(config.DeductPercentage)}%");
                    }
                    else
                    {
                        ruleParts.Add($"开赛前{config.DayStart}-{config.DayEnd}天扣除金额{Math.Round(config.DeductPercentage)}%");
                    }
                }
                refundRule = string.Join("，", ruleParts);
            }
        }
        catch (Exception ex)
        {
            _logger.LogWarning(ex, "读取退款配置失败，赛事ID={EventId}，使用默认规则", evt.Id);
        }
        
        // 如果有自定义配置，优先使用自定义配置（保持向后兼容）
        if (!string.IsNullOrWhiteSpace(evt.CustomConfigJson))
        {
            try
            {
                var config = System.Text.Json.JsonSerializer.Deserialize<Dictionary<string, string>>(evt.CustomConfigJson);
                if (config != null)
                {
                    if (config.TryGetValue("RefundRule", out var rule) && !string.IsNullOrWhiteSpace(rule))
                    {
                        refundRule = rule;
                    }
                    if (config.TryGetValue("PointsRule", out var pRule) && !string.IsNullOrWhiteSpace(pRule))
                    {
                        pointsRule = pRule;
                    }
                }
            }
            catch (Exception ex)
            {
                _logger.LogWarning(ex, "解析赛事自定义配置失败，赛事ID={EventId}", evt.Id);
            }
        }

        if (evt.PointsRuleId.HasValue)
        {
            var pointsRuleEntity = await _pointsRuleRepository.GetFirstAsync(r => r.Id == evt.PointsRuleId.Value && !r.DeleteMark);
            if (pointsRuleEntity != null)
            {
                pointsRule = pointsRuleEntity.Remark ?? pointsRule;
            }
        }

        EventFeeConfigDto? feeConfigDto = null;
        if (feeConfig != null)
        {
            feeConfigDto = new EventFeeConfigDto
            {
                ChargeMode = feeConfig.ChargeMode,
                Price = feeConfig.Price,
                MerchantId = evt.MerchantId
            };

            if (evt.MerchantId.HasValue && evt.MerchantId.Value > 0)
            {
                var merchant = await _merchantRepository.GetByIdAsync(evt.MerchantId.Value);
                if (merchant != null)
                {
                    feeConfigDto.MerchantName = merchant.MerchantName;
                    feeConfigDto.CreditCode = merchant.CreditCode;
                    feeConfigDto.BankName = merchant.BankName;
                    feeConfigDto.AccountNumber = merchant.AccountNumber;
                    feeConfigDto.BusinessLicenseUrl = merchant.BusinessLicenseUrl;
                }
            }

            if (eventProjects.Any())
            {
                feeConfigDto.ProjectPrices = new Dictionary<long, decimal>();
                foreach (var ep in eventProjects)
                {
                    feeConfigDto.ProjectPrices[ep.Id] = ep.Price / 100m;
                }
            }
        }

        var detail = new EventDetailDto
        {
            Id = evt.Id,
            EventName = evt.EventName,
            CoverImage = evt.CoverImage,
            EventStatus = evt.EventStatus,
            RegistrationStartTime = evt.RegistrationStartTime,
            RegistrationEndTime = evt.RegistrationEndTime,
            MatchStartTime = evt.MatchStartTime,
            MatchEndTime = evt.MatchEndTime,
            Address = $"{provinceName}{cityName}{districtName}{evt.DetailAddress}",
            EventVideo = evt.EventVideo,
            EventType = evt.EventType,
            ChargeMode = evt.ChargeMode,
            FeeConfig = feeConfigDto,
            RegistrationType = evt.RegistrationType,
            EventIntroduction = evt.EventIntroduction,
            IsNeedMaterial = evt.IsNeedMaterial,
            MaterialRemark = evt.MaterialRemark,
            MaterialUploadStartTime = evt.MaterialUploadStartTime,
            MaterialUploadEndTime = evt.MaterialUploadEndTime,
            RefundRule = refundRule,
            PointsRule = pointsRule,
            PointsRuleDetail = pointsRuleDetail,
            IsRegistered = isRegistered,
            ProvinceName = provinceName,
            CityName = cityName,
            DistrictName = districtName,

            IndividualProjectLimit = limit?.IndividualProjectLimit ?? 0,
            TeamProjectLimit = limit?.TeamProjectLimit ?? 0,

            Units = units.Select(u => new YD_Event.Application.Client.Dtos.EventUnitDto
            {
                UnitType = u.UnitType,
                UnitName = u.UnitName,
                LogoUrl = u.LogoUrl
            }).ToList(),

            Projects = eventProjects.Select(ep =>
            {
                var bp = baseProjects.FirstOrDefault(b => b.Id == ep.ProjectId);
                var pl = projectLimits.FirstOrDefault(x => x.ProjectId == ep.Id);
                var epGroups = eventProjectGroups.Where(g => g.EventProjectId == ep.Id).ToList();
                return new EventProjectDto
                {
                    Id = ep.Id,
                    Name = bp?.Name ?? "",
                    TypeName = bp?.ProjectType.Description() ?? "",
                    ProjectType = (long)(bp?.ProjectType ?? 0),
                    Fee = ep.Price / 100m,
                    ProjectLimitCount = pl?.LimitCount,
                    Groups = epGroups.Select(eg => 
                    {
                        var baseGroup = baseGroups.FirstOrDefault(bg => bg.Id == eg.ProjectGroupId);
                        var groupName = eg.GroupName ?? baseGroup?.GroupName ?? "";
                        var birthDateStart = eg.BirthDateStart != DateTime.MinValue ? eg.BirthDateStart : (baseGroup?.BirthDateStart ?? DateTime.MinValue);
                        var birthDateEnd = eg.BirthDateEnd != DateTime.MinValue ? eg.BirthDateEnd : (baseGroup?.BirthDateEnd ?? DateTime.MinValue);
                        var gender = eg.Gender;
                        return new EventProjectGroupDto
                        {
                            Id = eg.Id,
                            GroupName = groupName,
                            GenderRequirement = gender == Gender.Male ? "男" : (gender == Gender.Female ? "女" : "不限"),
                            AgeRequirement = $"{birthDateStart:yyyy-MM-dd} 至 {birthDateEnd:yyyy-MM-dd}"
                        };
                    }).ToList()
                };
            }).Where(x => !string.IsNullOrEmpty(x.Name)).ToList()
        };

        return detail;
    }

    /// <summary>
    /// 计算报名金额
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpPost("calculate-amount")]
    [DisplayName("计算报名金额")]
    public async Task<CalculateAmountOutput> CalculateRegistrationAmount([FromBody] CalculateAmountInput input)
    {
        var inputItems = input.Items.Select(i => new UnifiedRegistrationService.CalculateAmountInputItem
        {
            ProjectId = i.ProjectId,
            PersonCount = i.PersonCount
        }).ToList();

        var (totalAmount, chargeMode, itemDetails) = await _unifiedRegistrationService.CalculateRegistrationAmountAsync(input.EventId, inputItems);

        var result = new CalculateAmountOutput
        {
            ChargeMode = chargeMode,
            TotalAmount = totalAmount,
            ItemDetails = itemDetails.Select(d => new CalculateAmountItemOutput
            {
                ProjectId = d.projectId,
                ProjectName = d.projectName,
                UnitPrice = d.unitPrice,
                PersonCount = d.personCount,
                Subtotal = d.subtotal
            }).ToList()
        };

        return result;
    }

    /// <summary>
    /// 提交赛事报名
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpPost("apply")]
    [UnitOfWork]
    [DisplayName("提交赛事报名")]
    public async Task<long> SubmitRegistration([FromBody] SubmitRegistrationInput input)
    {
        var userId = GetCurrentUserId();
        
        // 0. 校验报名模式
        if (input.RegistrationMode == 2)
            throw Oops.Bah("团队报名请前往网页端进行操作");

        // 校验重复报名 - 如果已有未取消的报名记录，直接返回现有记录ID
        var existingRegistration = await _registrationRepository.GetFirstAsync(
            r => r.EventId == input.EventId && r.CreatedUserId == userId && r.PaymentStatus != 4); // 4=已取消
        
        if (existingRegistration != null)
        {
            // 已有未取消的报名记录，直接返回现有记录ID，让前端跳转到支付页面
            return existingRegistration.Id;
        }

        // 获取当前用户信息（用于个人报名时自动填充）
        var appUser = await _appUserRepository.GetFirstAsync(u => u.Id == userId && !u.DeleteMark);
        if (appUser == null && input.RegistrationMode == 1 && appUser.AuditStatus != AuditStatus.Pass)
            throw Oops.Bah("请先完成身份认证");

        // 个人报名模式下自动填充联系人信息
        if (input.RegistrationMode == 1)
        {
            if (string.IsNullOrWhiteSpace(input.ContactName))
                input.ContactName = appUser?.Name;
            
            if (string.IsNullOrWhiteSpace(input.ContactPhone))
                input.ContactPhone = appUser?.Mobile;

            // 验证必填联系人信息
            if (string.IsNullOrWhiteSpace(input.ContactName))
                throw Oops.Bah("联系人姓名不能为空，请先完善身份认证信息");
            
            if (string.IsNullOrWhiteSpace(input.ContactPhone))
                throw Oops.Bah("联系人电话不能为空，请先完善身份认证信息");
        }

        // 个人报名模式下自动填充参赛人员信息
        if (input.RegistrationMode == 1 && input.Items != null)
        {
            foreach (var item in input.Items)
            {
                if (item.Persons == null || !item.Persons.Any())
                {
                    if (appUser == null)
                        throw Oops.Bah("请先完成身份认证");
                    
                    item.Persons = new List<PersonInput>
                    {
                        new PersonInput
                        {
                            UserId = appUser.Id,
                            Name = appUser.Name ?? "",
                            Gender = appUser.Gender,
                            IdCardNumber = appUser.IdCardNumber ?? "",
                            BirthDate = appUser.BirthDate ?? DateTime.Now,
                            Mobile = appUser.Mobile
                        }
                    };
                }
            }
        }

        // 检查所有参赛人员是否都有UserId
        if (input.Items != null)
        {
            foreach (var item in input.Items)
            {
                if (item.Persons != null)
                {
                    foreach (var p in item.Persons)
                    {
                        if (!p.UserId.HasValue || p.UserId.Value <= 0)
                        {
                            throw Oops.Bah($"参赛人员 {p.Name} 的用户ID不能为空");
                        }
                    }
                }
            }
        }

        // 转换为统一输入模型
        var unifiedInput = new UnifiedRegistrationInput
        {
            EventId = input.EventId,
            RegistrationMode = input.RegistrationMode,
            TeamName = input.TeamName,
            ContactName = input.ContactName ?? "",
            ContactPhone = input.ContactPhone ?? "",
            CreatedUserId = userId,
            IsDraft = false,
            RegistrationChannel = 1, // 1-小程序渠道
            Items = input.Items?.Select(item => new UnifiedRegistrationItemInput
            {
                ProjectId = item.ProjectId,
                GroupId = item.GroupId,
                GroupName = item.GroupName,
                Persons = item.Persons?.Select(p => new UnifiedPersonInput
                {
                    UserId = p.UserId,
                    Name = p.Name,
                    Gender = p.Gender,
                    IdCardNumber = p.IdCardNumber,
                    BirthDate = p.BirthDate,
                    Mobile = p.Mobile
                }).ToList() ?? new List<UnifiedPersonInput>()
            }).ToList() ?? new List<UnifiedRegistrationItemInput>()
        };

        // 调用统一报名服务
        var result = await _unifiedRegistrationService.ProcessRegistrationAsync(unifiedInput);
        
        return result.RegistrationId;
    }

    /// <summary>
    /// 验证优惠券
    /// </summary>
    [HttpPost("coupon/validate")]
    [DisplayName("验证优惠券")]
    public async Task<ValidateCouponOutput> ValidateCoupon([FromBody] ValidateCouponInput input)
    {
        var userId = GetCurrentUserId();
        return await _unifiedRegistrationService.ValidateAndUseCouponAsync(input, userId);
    }

    /// <summary>
    /// 获取支付信息
    /// </summary>
    /// <remarks>
    /// 用于获取赛事报名的支付信息，包括微信JSAPI支付参数
    /// OpenId 参数必须通过请求体(JSON)传入，格式验证由DTO自动处理
    /// </remarks>
    /// <param name="input">支付信息查询输入参数，包含报名记录ID和OpenId</param>
    /// <returns>支付信息，包括微信支付参数（如果是微信支付）</returns>
    [HttpPost("payment-info")]
    [DisplayName("获取支付信息")]
    public async Task<PaymentInfoDto> GetPaymentInfo([FromBody] GetPaymentInfoInput input)
    {
        var userId = GetCurrentUserId();
        
        // 验证报名记录归属权
        var reg = await _registrationRepository.GetFirstAsync(r => r.Id == input.RegistrationId && r.CreatedUserId == userId);
        if (reg == null) throw Oops.Bah("报名记录不存在");

        var evt = await _eventRepository.GetFirstAsync(e => e.Id == reg.EventId);
        if (evt == null) throw Oops.Bah("赛事不存在");

        var merchant = await _merchantRepository.GetFirstAsync(m => m.Id == evt.MerchantId && !m.DeleteMark);

        // 如果支付方式已经设置为微信支付或免费，直接调用统一支付服务
        int paymentMethod = reg.PaymentMethod == 0 ? 2 : reg.PaymentMethod;
        
        // 构建统一支付输入
        var unifiedInput = new UnifiedPaymentInput
        {
            RegistrationId = input.RegistrationId,
            PaymentMethod = paymentMethod,
            PaymentMethodType = reg.PaymentMethodType,
            CouponId = input.CouponId,
            OpenId = input.OpenId,
            PaymentProofUrl = null,
            OperatorUserId = userId
        };

        // 调用统一支付服务
        var unifiedResult = await _unifiedRegistrationService.ProcessPaymentAsync(unifiedInput);

        // 构建返回结果
        var paymentInfo = new PaymentInfoDto
        {
            RegistrationId = unifiedResult.RegistrationId,
            Amount = unifiedResult.ActualAmount,
            OriginalAmount = unifiedResult.OriginalAmount,
            DiscountAmount = unifiedResult.DiscountAmount,
            PaymentMethod = unifiedResult.PaymentStatus == 1 ? 0 : paymentMethod, // 如果已支付，不需要显示支付方式
            BankAccountName = merchant?.MerchantName,
            BankAccountNo = merchant?.AccountNumber,
            BankName = merchant?.BankName,
            WechatPayParams = unifiedResult.WechatPayParams
        };

        return paymentInfo;
    }

    /// <summary>
    /// 根据赛事ID精确获取对应的微信支付配置
    /// </summary>
    /// <remarks>
    /// 1. 通过赛事信息中的 MerchantId 查找对应的微信支付配置
    /// 2. 必须确保赛事已关联商户配置，不使用兜底策略
    /// 3. 只返回启用状态且未删除的配置
    /// </remarks>
    /// <param name="eventInfo">赛事信息，必须包含有效的 MerchantId</param>
    /// <returns>微信支付配置，如果未找到则返回 null</returns>
    /// <exception cref="ArgumentException">当赛事没有关联商户配置时抛出</exception>
    private async Task<WeChatPayConfig?> GetWeChatPayConfigByEventAsync(EventInfo eventInfo)
    {
        if (!eventInfo.MerchantId.HasValue)
        {
            _logger.LogError("赛事未关联商户配置，赛事ID={EventId}，赛事名称={EventName}", 
                eventInfo.Id, eventInfo.EventName);
            throw new ArgumentException($"赛事[{eventInfo.EventName}]未关联商户配置，请联系管理员配置", nameof(eventInfo));
        }

        var payConfig = await _weChatPayConfigRepository.GetFirstAsync(x => 
            x.MerchantId == eventInfo.MerchantId.Value && 
            x.Status == AvailabilityStatus.Enable && 
            !x.DeleteMark);

        if (payConfig == null)
        {
            _logger.LogError("未找到赛事关联的商户支付配置，赛事ID={EventId}，商户ID={MerchantId}", 
                eventInfo.Id, eventInfo.MerchantId);
        }

        return payConfig;
    }

    /// <summary>
    /// 上传支付凭证（线下支付）
    /// </summary>
    [HttpPost("upload-voucher/{registrationId}")]
    [DisplayName("上传支付凭证")]
    [UnitOfWork]
    public async Task<bool> UploadPaymentVoucher(long registrationId, [FromBody] YD_Event.Application.Client.Dtos.UploadVoucherInput input)
    {
        var userId = GetCurrentUserId();
        
        // 验证报名记录归属权
        var reg = await _registrationRepository.GetFirstAsync(r => r.Id == registrationId && r.CreatedUserId == userId);
        if (reg == null) throw Oops.Bah("报名记录不存在");

        // 构建统一支付输入
        var unifiedInput = new UnifiedPaymentInput
        {
            RegistrationId = registrationId,
            PaymentMethod = 1, // 线下支付
            CouponId = null,
            OpenId = null,
            PaymentProofUrl = input.VoucherUrl,
            OperatorUserId = userId
        };

        // 调用统一支付服务
        await _unifiedRegistrationService.ProcessPaymentAsync(unifiedInput);
        
        return true;
    }
    
    /// <summary>
    /// 更新参赛人信息
    /// </summary>
    [HttpPost("update-player")]
    [DisplayName("更新参赛人信息")]
    public async Task<bool> UpdateRegistrationPlayer([FromBody] UpdatePlayerInput input)
    {
        var userId = GetCurrentUserId();
        var person = await _personRepository.GetFirstAsync(p => p.Id == input.PersonId);
        if (person == null) throw Oops.Bah("参赛人不存在");
        
        // 校验权限：确保是该用户创建的报名
        var reg = await _registrationRepository.GetFirstAsync(r => r.Id == person.RegistrationId);
        if (reg == null || reg.CreatedUserId != userId) throw Oops.Bah("无权操作");
        
        person.Name = input.Name;
        person.IdCard = input.IdCardNumber;
        person.Gender = input.Gender;
        person.Phone = input.Mobile;
        person.UpdatedTime = DateTime.Now;
        person.UpdatedUserId = userId;
        
        return await _personRepository.UpdateAsync(person);
    }

    /// <summary>
    /// 获取我的已报赛事列表
    /// </summary>
    /// <returns></returns>
    [HttpGet("my-events")]
    [DisplayName("获取我的已报赛事列表")]
    public async Task<PageResult<MyEventListDto>> GetMyEventList([FromQuery] int page = 1, [FromQuery] int pageSize = 10)
    {
        var userId = GetCurrentUserId();
        
        var query = _registrationRepository.AsQueryable()
            .LeftJoin<EventInfo>((r, e) => r.EventId == e.Id)
            .Where(r => r.CreatedUserId == userId && !r.DeleteMark && r.PaymentStatus == 1)
            .OrderByDescending(r => r.RegistrationTime)
            .Select((r, e) => new MyEventListDto
            {
                RegistrationId = r.Id,
                EventId = r.EventId,
                EventName = e.EventName,
                CoverImage = e.CoverImage,
                PaymentStatus = r.PaymentStatus,
                RegistrationTime = r.RegistrationTime,
                ProjectCount = SqlFunc.Subqueryable<EventRegistrationItem>().Where(i => i.RegistrationId == r.Id).Count(),
                IsNeedMaterial = e.IsNeedMaterial,
                MaterialRemark = e.MaterialRemark,
                MaterialUploadStartTime = e.MaterialUploadStartTime,
                MaterialUploadEndTime = e.MaterialUploadEndTime,
                MaterialUrl = r.MaterialUrl
            });

        return await query.ToPagedListAsync(new Pagination { PageNo = page, PageSize = pageSize });
    }

    /// <summary>
    /// 获取报名详情（包含参赛人）
    /// </summary>
    [HttpGet("my-registration/{registrationId}")]
    [DisplayName("获取报名详情")]
    public async Task<RegistrationDetailDto> GetRegistrationDetail(long registrationId)
    {
        var userId = GetCurrentUserId();
        
        var reg = await _registrationRepository.AsQueryable()
            .LeftJoin<EventInfo>((r, e) => r.EventId == e.Id)
            .Where(r => r.Id == registrationId && r.CreatedUserId == userId)
            .Select((r, e) => new {
                r.Id,
                r.EventId,
                e.EventName,
                e.CoverImage,
                r.PaymentStatus,
                r.TotalAmount,
                r.OrderNo,
                r.RegistrationTime,
                r.ReviewRemark,
                // 为了计算 EventStatus
                RegStart = e.RegistrationStartTime,
                RegEnd = e.RegistrationEndTime,
                MatchStart = e.MatchStartTime,
                MatchEnd = e.MatchEndTime
            })
            .FirstAsync();
            
        if (reg == null) throw Oops.Bah("报名记录不存在");
        
        // 计算 EventStatus
        EventStatus status = EventStatus.Enrolling;
        var now = DateTime.Now;
        if (now >= reg.RegStart && now <= reg.RegEnd) status = EventStatus.Enrolling;
        else if (now >= reg.MatchStart && now <= reg.MatchEnd) status = EventStatus.Ongoing;
        else if (now > reg.MatchEnd) status = EventStatus.Ended;

        // 获取 Items 和 Persons
        var items = await _registrationItemRepository.AsQueryable()
            .Where(i => i.RegistrationId == registrationId)
            .ToListAsync();
            
        var persons = await _personRepository.AsQueryable()
            .Where(p => p.RegistrationId == registrationId)
            .ToListAsync();

        return new RegistrationDetailDto
        {
            RegistrationId = reg.Id,
            EventId = reg.EventId,
            EventName = reg.EventName,
            CoverImage = reg.CoverImage,
            EventStatus = status,
            PaymentStatus = reg.PaymentStatus,
            TotalAmount = reg.TotalAmount,
            OrderNo = reg.OrderNo,
            RegistrationTime = reg.RegistrationTime,
            ReviewRemark = reg.ReviewRemark,
            Items = items.Select(i => new RegistrationItemDto
            {
                Id = i.Id,
                ProjectName = i.ProjectName,
                GroupName = i.GroupName,
                Price = i.UnitPrice, // 单价
                Persons = persons.Where(p => p.RegistrationItemId == i.Id).Select(p => new YD_Event.Application.Client.Dtos.RegistrationPersonDto
                {
                    Id = p.Id,
                    Name = p.Name,
                    IdCardNumber = p.IdCard,
                    Gender = p.Gender,
                    Mobile = p.Phone
                }).ToList()
            }).ToList()
        };
    }

    /// <summary>
    /// 查询报名状态
    /// </summary>
    /// <param name="registrationId"></param>
    /// <returns></returns>
    [HttpGet("status/{registrationId}")]
    [DisplayName("查询报名状态")]
    public async Task<RegistrationStatusDto> GetRegistrationStatus(long registrationId)
    {
        var userId = GetCurrentUserId();
        var reg = await _registrationRepository.GetFirstAsync(r => r.Id == registrationId && r.CreatedUserId == userId);
        if (reg == null) throw Oops.Bah("报名记录不存在");

        return new RegistrationStatusDto
        {
            RegistrationId = reg.Id,
            PaymentStatus = reg.PaymentStatus,
            RejectReason = reg.ReviewRemark
        };
    }

    /// <summary>
    /// 取消报名
    /// </summary>
    /// <param name="registrationId"></param>
    /// <returns></returns>
    [HttpPost("cancel/{registrationId}")]
    [DisplayName("取消报名")]
    [UnitOfWork]
    public async Task<bool> CancelRegistration(long registrationId)
    {
        var userId = GetCurrentUserId();
        return await _unifiedRegistrationService.CancelRegistrationAsync(registrationId, userId);
    }

    /// <summary>
    /// 选择支付方式
    /// </summary>
    /// <remarks>
    /// 用于选择赛事报名的支付方式
    /// - 选择微信支付时，必须提供有效的 OpenId
    /// - OpenId 的格式验证由 DTO 自动处理
    /// </remarks>
    /// <param name="input">选择支付方式的输入参数</param>
    /// <returns>操作是否成功</returns>
    [HttpPost("select-payment-method")]
    [UnitOfWork]
    [DisplayName("选择支付方式")]
    public async Task<bool> SelectPaymentMethod([FromBody] SelectPaymentMethodInput input)
    {
        var userId = GetCurrentUserId();
        var reg = await _registrationRepository.GetFirstAsync(r => r.Id == input.RegistrationId && r.CreatedUserId == userId);
        if (reg == null) throw Oops.Bah("报名记录不存在");

        if (reg.PaymentStatus == 1) throw Oops.Bah("订单已支付，无法修改支付方式");
        if (reg.PaymentStatus == 4) throw Oops.Bah("订单已取消");

        // 如果选择微信支付，验证 OpenId 是否提供
        if (input.PaymentMethod == 2)
        {
            if (string.IsNullOrWhiteSpace(input.OpenId))
            {
                _logger.LogWarning("选择微信支付时未提供 OpenId，报名ID={RegistrationId}", input.RegistrationId);
                throw Oops.Bah("选择微信支付时必须提供 OpenId");
            }
        }

        // 构建统一支付输入
        var unifiedInput = new UnifiedPaymentInput
        {
            RegistrationId = input.RegistrationId,
            PaymentMethod = input.PaymentMethod,
            CouponId = null,
            OpenId = input.OpenId,
            PaymentProofUrl = null,
            OperatorUserId = userId
        };

        // 调用统一支付服务（仅设置支付方式，不处理实际支付）
        // 处理支付方式转换逻辑
        if (input.PaymentMethodType == PaymentMethodType.WeChatPay || 
            input.PaymentMethodType == PaymentMethodType.AliPay)
        {
            reg.PaymentMethod = 2; // 线上支付
        }
        else if (input.PaymentMethodType == PaymentMethodType.BankTransfer)
        {
            reg.PaymentMethod = 1; // 线下支付
        }
        else
        {
            // 如果没有指定具体支付方式，使用输入的支付方式
            reg.PaymentMethod = input.PaymentMethod;
        }
        
        // 设置具体支付方式
        reg.PaymentMethodType = input.PaymentMethodType;
        
        // 线下支付订单状态设置为待审核
        if (reg.PaymentMethod == 1)
        {
            reg.PaymentStatus = 0; // 待审核
        }
        
        reg.UpdatedTime = DateTime.Now;
        reg.UpdatedUserId = userId;

        _logger.LogInformation("成功修改支付方式，报名ID={RegistrationId}，支付方式={PaymentMethod}", 
            input.RegistrationId, input.PaymentMethod);

        return await _registrationRepository.UpdateAsync(reg);
    }

    /// <summary>
    /// 同步支付状态（主动查询微信支付）
    /// </summary>
    [HttpPost("sync-payment/{registrationId}")]
    [UnitOfWork]
    [DisplayName("同步支付状态")]
    public async Task<bool> SyncPaymentStatus(long registrationId)
    {
        var userId = GetCurrentUserId();
        return await _unifiedRegistrationService.QueryAndSyncWeChatPaymentStatusAsync(registrationId, userId);
    }

    /// <summary>
    /// 微信支付回调通知处理
    /// </summary>
    /// <remarks>
    /// 处理流程：
    /// 1. 接收微信支付平台回调通知
    /// 2. 使用平台级别的支付配置验证签名和解密数据（微信平台证书是平台级别）
    /// 3. 获取订单号后查找报名记录
    /// 4. 根据报名记录获取赛事信息
    /// 5. 根据赛事信息获取商户级别的支付配置（用于后续可能的退款等操作）
    /// 6. 更新订单支付状态
    /// </remarks>
    /// <returns>微信支付平台要求的响应格式</returns>
    [HttpPost("wechat-pay-notify")]
    [AllowAnonymous]
    [UnitOfWork]
    [DisplayName("微信支付回调通知")]
    public async Task<IActionResult> WeChatPayNotify()
    {
        try
        {
            using var reader = new StreamReader(_httpContextAccessor.HttpContext.Request.Body);
            var body = await reader.ReadToEndAsync();
            
            var headers = _httpContextAccessor.HttpContext.Request.Headers;
            var timestamp = headers["Wechatpay-Timestamp"].FirstOrDefault();
            var nonce = headers["Wechatpay-Nonce"].FirstOrDefault();
            var signature = headers["Wechatpay-Signature"].FirstOrDefault();
            var serialNumber = headers["Wechatpay-Serial"].FirstOrDefault();

            if (string.IsNullOrEmpty(timestamp) || string.IsNullOrEmpty(nonce) || 
                string.IsNullOrEmpty(signature) || string.IsNullOrEmpty(serialNumber))
            {
                _logger.LogWarning("微信支付回调通知参数不完整");
                return new JsonResult(new { code = "FAIL", message = "参数不完整" });
            }

            // 第一步：使用平台级别的支付配置验证签名和解密数据
            // 注意：微信支付签名验证使用的是微信平台证书（平台级别），所有商户共用
            var platformPayConfig = await _weChatPayConfigRepository.GetFirstAsync(x => 
                x.Status == AvailabilityStatus.Enable && !x.DeleteMark);
            if (platformPayConfig == null)
            {
                _logger.LogError("未找到平台级别的微信支付配置");
                return new JsonResult(new { code = "FAIL", message = "支付配置未找到" });
            }

            var notifyRequest = new WeChatPayNotifyRequest
            {
                Timestamp = timestamp,
                Nonce = nonce,
                Signature = signature,
                SerialNumber = serialNumber,
                Body = body
            };

            // 验证签名
            var isValid = await _weChatPayService.VerifyPayNotifyAsync(platformPayConfig, notifyRequest);
            if (!isValid)
            {
                _logger.LogWarning("微信支付回调签名验证失败");
                return new JsonResult(new { code = "FAIL", message = "签名验证失败" });
            }

            // 解密通知数据
            var notifyData = await _weChatPayService.DecryptPayNotifyDataAsync(platformPayConfig, notifyRequest);
            if (notifyData == null || notifyData.TradeState != "SUCCESS")
            {
                _logger.LogWarning("微信支付回调数据无效或交易未成功");
                return new JsonResult(new { code = "SUCCESS", message = "成功" });
            }

            // 根据商户订单号查找报名记录
            var reg = await _registrationRepository.GetFirstAsync(r => r.OrderNo == notifyData.OutTradeNo);
            if (reg == null)
            {
                _logger.LogWarning($"未找到订单：{notifyData.OutTradeNo}");
                return new JsonResult(new { code = "SUCCESS", message = "成功" });
            }

            if (reg.PaymentStatus == 1)
            {
                _logger.LogInformation($"订单 {reg.OrderNo} 已处理过支付回调");
                return new JsonResult(new { code = "SUCCESS", message = "成功" });
            }

            // 第二步：获取赛事信息并验证商户配置
            var evt = await _eventRepository.GetFirstAsync(e => e.Id == reg.EventId);
            if (evt == null)
            {
                _logger.LogError($"未找到赛事信息，订单号：{reg.OrderNo}，赛事ID：{reg.EventId}");
                return new JsonResult(new { code = "FAIL", message = "赛事信息不存在" });
            }

            // 验证赛事是否关联了有效的商户支付配置
            var merchantPayConfig = await GetWeChatPayConfigByEventAsync(evt);
            if (merchantPayConfig == null)
            {
                _logger.LogError("赛事未配置有效的商户支付配置，订单号={OrderNo}，赛事ID={EventId}", 
                    reg.OrderNo, evt.Id);
                return new JsonResult(new { code = "FAIL", message = "商户支付配置异常" });
            }

            _logger.LogInformation("订单支付成功，订单号={OrderNo}，赛事ID={EventId}，商户ID={MerchantId}", 
                reg.OrderNo, evt.Id, evt.MerchantId);

            // 使用统一的支付成功处理方法
            await _unifiedRegistrationService.HandlePaymentSuccessAsync(
                reg.OrderNo, 
                notifyData.TransactionId, 
                notifyData.SuccessTime?.DateTime, 
                reg.CreatedUserId);

            return new JsonResult(new { code = "SUCCESS", message = "成功" });
        }
        catch (ArgumentException ex)
        {
            _logger.LogError(ex, "处理微信支付回调通知时参数验证失败");
            return new JsonResult(new { code = "FAIL", message = "业务验证失败" });
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "处理微信支付回调通知异常");
            return new JsonResult(new { code = "FAIL", message = "处理失败" });
        }
    }

    /// <summary>
    /// 从请求中获取 OpenId 参数
    /// </summary>
    /// <remarks>
    /// 支持从以下来源获取 OpenId（按优先级顺序）：
    /// 1. 查询字符串 (QueryString)：openId 或 openid 参数
    /// 2. 表单数据 (FormData)：openId 或 openid 字段
    /// 3. 请求体 (JSON)：openId 或 openid 属性
    /// 4. 用户 Claims（兜底方案）：openid claim
    /// </remarks>
    /// <returns>获取到的 OpenId 值，如果未找到则返回空字符串</returns>
    private string GetOpenIdFromRequest()
    {
        var httpContext = _httpContextAccessor.HttpContext;
        if (httpContext == null)
        {
            _logger.LogWarning("无法获取 HttpContext，OpenId 获取失败");
            return string.Empty;
        }

        // 1. 尝试从查询字符串获取
        var openId = httpContext.Request.Query["openId"].FirstOrDefault() ?? 
                     httpContext.Request.Query["openid"].FirstOrDefault();
        if (!string.IsNullOrEmpty(openId))
        {
            _logger.LogDebug("从查询字符串获取到 OpenId");
            return openId;
        }

        // 2. 尝试从表单数据获取
        if (httpContext.Request.HasFormContentType)
        {
            openId = httpContext.Request.Form["openId"].FirstOrDefault() ?? 
                     httpContext.Request.Form["openid"].FirstOrDefault();
            if (!string.IsNullOrEmpty(openId))
            {
                _logger.LogDebug("从表单数据获取到 OpenId");
                return openId;
            }
        }

        // 3. 尝试从请求体 JSON 中获取（需要先读取）
        // 注意：为了避免多次读取请求体，这里暂时不实现
        // 如果需要从 JSON 中获取，可以在具体接口的 DTO 中添加 openId 字段

        // 4. 兜底方案：从用户 Claims 中获取
        openId = httpContext.User?.FindFirst("openid")?.Value;
        if (!string.IsNullOrEmpty(openId))
        {
            _logger.LogDebug("从用户 Claims 中获取到 OpenId");
            return openId;
        }

        _logger.LogWarning("未在请求中找到 OpenId 参数");
        return string.Empty;
    }

    /// <summary>
    /// 验证 OpenId 参数的有效性
    /// </summary>
    /// <remarks>
    /// 验证规则：
    /// 1. OpenId 不能为空或空白字符串
    /// 2. OpenId 长度必须在合理范围内（微信 OpenId 通常为 28 个字符左右）
    /// 3. OpenId 只能包含字母、数字和下划线
    /// </remarks>
    /// <param name="openId">待验证的 OpenId</param>
    /// <param name="errorMessage">验证失败时的错误信息</param>
    /// <returns>验证通过返回 true，否则返回 false</returns>
    private bool ValidateOpenId(string openId, out string errorMessage)
    {
        errorMessage = string.Empty;

        // 验证是否为空
        if (string.IsNullOrWhiteSpace(openId))
        {
            errorMessage = "OpenId 参数不能为空";
            _logger.LogWarning("OpenId 验证失败：参数为空");
            return false;
        }

        // 验证长度（微信 OpenId 通常为 28 个字符，允许一定的波动范围）
        if (openId.Length < 10 || openId.Length > 50)
        {
            errorMessage = $"OpenId 参数长度不合法，当前长度：{openId.Length}";
            _logger.LogWarning("OpenId 验证失败：长度不合法，长度={Length}", openId.Length);
            return false;
        }

        // 验证格式（只能包含字母、数字和下划线）
        foreach (char c in openId)
        {
            if (!char.IsLetterOrDigit(c) && c != '_' && c != '-')
            {
                errorMessage = "OpenId 参数格式不合法，只能包含字母、数字、下划线和连字符";
                _logger.LogWarning("OpenId 验证失败：格式不合法，OpenId={OpenId}", openId);
                return false;
            }
        }

        _logger.LogDebug("OpenId 验证通过");
        return true;
    }

    private EventStatus CalculateEventStatus(EventInfo e)
    {
        var now = DateTime.Now;
        if (now < e.RegistrationStartTime) return EventStatus.NotStarted; // 未开始
        if (now >= e.RegistrationStartTime && now <= e.RegistrationEndTime) return EventStatus.Enrolling; // 报名中
        if (now > e.RegistrationEndTime && now < e.MatchStartTime) return EventStatus.RegistrationEnded; // 报名结束
        if (now >= e.MatchStartTime && now <= e.MatchEndTime) return EventStatus.Ongoing; // 比赛中
        if (now > e.MatchEndTime) return EventStatus.Ended; // 已结束
        return EventStatus.Enrolling; // 默认返回报名中
    }

    /// <summary>
    /// 上传赛事素材
    /// </summary>
    /// <param name="input">上传素材输入参数</param>
    /// <returns>操作是否成功</returns>
    [HttpPost("upload-material")]
    [DisplayName("上传赛事素材")]
    public async Task<bool> UploadMaterial([FromBody] YD_Event.Application.Client.Dtos.UploadMaterialInput input)
    {
        var userId = GetCurrentUserId();
        
        var registration = await _registrationRepository.GetFirstAsync(r => r.Id == input.RegistrationId && !r.DeleteMark);
        if (registration == null) throw Oops.Bah("报名记录不存在");
        
        if (registration.CreatedUserId != userId) throw Oops.Bah("无权操作此报名记录");
        
        if (registration.PaymentStatus == 4) throw Oops.Bah("报名已取消，无法上传素材");
        
        var evt = await _eventRepository.GetFirstAsync(e => e.Id == registration.EventId && !e.DeleteMark);
        if (evt == null) throw Oops.Bah("赛事不存在");
        
        if (evt.IsNeedMaterial == false) throw Oops.Bah("此赛事不需要上传素材");
        
        if (evt.MaterialUploadStartTime.HasValue && DateTime.Now < evt.MaterialUploadStartTime.Value)
        {
            throw Oops.Bah("素材上传尚未开始");
        }
        
        if (evt.MaterialUploadEndTime.HasValue && DateTime.Now > evt.MaterialUploadEndTime.Value)
        {
            throw Oops.Bah("素材上传已结束");
        }
        
        registration.MaterialUrl = input.MaterialUrl;
        registration.UpdatedTime = DateTime.Now;
        registration.UpdatedUserId = userId;
        
        return await _registrationRepository.UpdateAsync(registration);
    }

    /// <summary>
    /// 取消报名并申请退款
    /// </summary>
    [HttpPost("cancel-registration-refund")]
    [UnitOfWork]
    [DisplayName("取消报名退款")]
    public async Task CancelRegistrationRefund([FromBody] CancelRegistrationRefundInput input)
    {
        var userId = GetCurrentUserId();

        // 验证报名记录
        var registration = await _registrationRepository.GetByIdAsync(input.RegistrationId);
        if (registration == null) throw Oops.Bah("报名记录不存在");
        if (registration.CreatedUserId != userId) throw Oops.Bah("无权操作此报名记录");
        if (registration.PaymentStatus != 1) throw Oops.Bah("只有已支付的报名才能申请退款");

        // 获取订单信息
        var order = await _orderRepository.GetFirstAsync(x => x.RegistrationId == input.RegistrationId && x.OrderType == 1);
        if (order == null) throw Oops.Bah("订单不存在");
        if (order.OrderStatus != OrderStatus.Paid) throw Oops.Bah("订单未支付，无法退款");

        // 获取赛事信息
        var eventInfo = await _eventRepository.GetByIdAsync(order.EventId);
        if (eventInfo == null) throw Oops.Bah("赛事信息不存在");

        // 计算退款金额
        var refundAmount = await CalculateRefundAmount(order.ActualAmount, eventInfo.MatchStartTime);

        // 处理退款
        await ProcessRefundAsync(order, registration, refundAmount, input.RefundReason ?? "用户取消报名", userId);
    }

    /// <summary>
    /// 检查报名限制
    /// </summary>
    /// <param name="input">报名限制检查输入参数</param>
    /// <returns>报名限制检查结果</returns>
    [HttpPost("registration-limit/check")]
    [DisplayName("检查报名限制")]
    public async Task<RegistrationLimitCheckOutput> CheckRegistrationLimit([FromBody] UnifiedRegistrationInput input)
    {
        var userId = GetCurrentUserId();
        input.CreatedUserId = userId;
        return await _unifiedRegistrationService.CheckRegistrationLimitAsync(input);
    }

    /// <summary>
    /// 计算退款金额
    /// </summary>
    private async Task<decimal> CalculateRefundAmount(decimal totalAmount, DateTime eventStartTime)
    {
        var configs = await _refundConfigRepository.AsQueryable()
            .Where(x => x.Status == Core.Enum.AvailabilityStatus.Enable && !x.DeleteMark)
            .OrderBy(x => x.DayStart)
            .ToListAsync();

        if (!configs.Any()) return totalAmount;

        var daysRemaining = (eventStartTime - DateTime.Now).TotalDays;
        if (daysRemaining < 0) daysRemaining = 0;

        var matchConfig = configs.FirstOrDefault(c =>
            daysRemaining >= c.DayStart &&
            (c.DayEnd == int.MaxValue ? true : daysRemaining < c.DayEnd)
        );

        if (matchConfig != null)
        {
            var deductAmount = totalAmount * (matchConfig.DeductPercentage / 100m);
            return totalAmount - deductAmount;
        }

        return totalAmount;
    }

    /// <summary>
    /// 处理退款核心逻辑
    /// </summary>
    private async Task ProcessRefundAsync(
        YD_Event.Core.Entities.Order order,
        EventRegistration registration,
        decimal refundAmount,
        string refundReason,
        long userId)
    {
        var now = DateTime.Now;

        // 获取微信支付配置
        var weChatPayConfig = await _weChatPayConfigRepository.GetFirstAsync(x => !x.DeleteMark);

        // 生成退款单号
        var outRefundNo = "RF" + DateTime.Now.ToString("yyyyMMddHHmmss") + new Random().Next(1000, 9999);

        // 创建退款记录
        var refundRecord = new RefundRecord
        {
            Id = _idGenerator.NewLong(),
            OutRefundNo = outRefundNo,
            RegistrationId = registration.Id,
            OutTradeNo = order.OrderNo,
            RefundAmount = refundAmount,
            TotalAmount = order.ActualAmount,
            RefundReason = refundReason,
            RefundStatus = 0,
            ApplyTime = now,
            WeChatPayConfigId = weChatPayConfig?.Id,
            CreatedTime = now,
            CreatedUserId = userId,
            Status = Core.Enum.AvailabilityStatus.Enable
        };

        // 获取支付记录中的微信交易号
        var payment = await _paymentRepository.GetFirstAsync(p => p.RegistrationId == registration.Id);
        if (payment != null && !string.IsNullOrEmpty(payment.TransactionNo))
        {
            refundRecord.TransactionId = payment.TransactionNo;
        }

        await _refundRecordRepository.InsertAsync(refundRecord);

        // 如果是线上支付，调用微信退款接口
        if (registration.PaymentMethod == 2 && weChatPayConfig != null)
        {
            await CreateWeChatRefundAsync(refundRecord, order, weChatPayConfig, refundAmount, registration, userId);
        }
        else
        {
            // 线下支付直接标记退款成功
            await CompleteRefundAsync(refundRecord, order, registration, userId);
        }
    }

    /// <summary>
    /// 调用微信退款接口
    /// </summary>
    private async Task CreateWeChatRefundAsync(
        RefundRecord refundRecord,
        YD_Event.Core.Entities.Order order,
        WeChatPayConfig config,
        decimal refundAmount,
        EventRegistration registration,
        long userId)
    {
        try
        {
            var request = new YD_Event.Core.Infrastructure.WeChat.Dto.CreateRefundRequest
            {
                OutTradeNo = order.OrderNo,
                OutRefundNo = refundRecord.OutRefundNo,
                RefundAmount = (int)(refundAmount * 100),
                TotalAmount = (int)(order.ActualAmount * 100),
                Reason = refundRecord.RefundReason
                //NotifyUrl = config.RefundNotifyUrl
            };

            var result = await _weChatPayService.CreateRefundAsync(config, request);

            if (result.Success)
            {
                refundRecord.RefundId = result.RefundId;
                refundRecord.WeChatResponse = result.WeChatResponse;

                if (result.RefundStatus == "SUCCESS")
                {
                    await CompleteRefundAsync(refundRecord, order, registration, userId);
                }
                else
                {
                    refundRecord.RefundStatus = 0;
                    await _refundRecordRepository.UpdateAsync(refundRecord);
                }
            }
            else
            {
                refundRecord.RefundStatus = 2;
                refundRecord.ErrorMessage = result.Message;
                refundRecord.WeChatResponse = result.WeChatResponse;
                await _refundRecordRepository.UpdateAsync(refundRecord);
                throw Oops.Bah($"微信退款申请失败: {result.Message}");
            }
        }
        catch (Exception ex)
        {
            refundRecord.RefundStatus = 2;
            refundRecord.ErrorMessage = ex.Message;
            await _refundRecordRepository.UpdateAsync(refundRecord);
            throw;
        }
    }

    /// <summary>
    /// 完成退款流程
    /// </summary>
    private async Task CompleteRefundAsync(
        RefundRecord refundRecord,
        YD_Event.Core.Entities.Order originalOrder,
        EventRegistration registration,
        long userId)
    {
        var now = DateTime.Now;

        // 更新退款记录状态
        refundRecord.RefundStatus = 1;
        refundRecord.SuccessTime = now;
        await _refundRecordRepository.UpdateAsync(refundRecord);

        // 创建退款订单
        var refundOrder = new YD_Event.Core.Entities.Order
        {
            Id = _idGenerator.NewLong(),
            OrderNo = refundRecord.OutRefundNo,
            OrderType = 2,
            MerchantId = originalOrder.MerchantId,
            MerchantCertificationId = originalOrder.MerchantCertificationId,
            EventId = originalOrder.EventId,
            RegistrationId = originalOrder.RegistrationId,
            RelatedOrderId = originalOrder.Id,
            OriginalAmount = originalOrder.ActualAmount,
            ActualAmount = refundRecord.RefundAmount,
            OrderStatus = OrderStatus.Refunded,
            PaymentTime = now,
            Remark = refundRecord.RefundReason,
            CreatedTime = now,
            CreatedUserId = userId,
            Status = Core.Enum.AvailabilityStatus.Enable
        };
        await _orderRepository.InsertAsync(refundOrder);

        // 更新原订单状态
        originalOrder.OrderStatus = OrderStatus.Refunded;
        originalOrder.UpdatedTime = now;
        originalOrder.UpdatedUserId = userId;
        await _orderRepository.UpdateAsync(originalOrder);

        // 更新报名状态
        registration.PaymentStatus = 3;
        registration.UpdatedTime = now;
        registration.UpdatedUserId = userId;
        await _registrationRepository.UpdateAsync(registration);

        // 更新支付记录
        var payment = await _paymentRepository.GetFirstAsync(p => p.RegistrationId == originalOrder.RegistrationId);
        if (payment != null)
        {
            payment.RefundStatus = 1;
            payment.UpdatedTime = now;
            payment.UpdatedUserId = userId;
            await _paymentRepository.UpdateAsync(payment);
        }
    }
}