using YD_Event.Application.AppUser.Dtos;
using YD_Event.Application.Auth;
using YD_Event.Core.Entities;
using AppUserEntity = YD_Event.Core.Entities.AppUser;
using YD_Event.Core.Enum;
using Mapster;
using EasyCaching.Core;

namespace YD_Event.Application.AppUser;

/// <summary>
/// 普通用户服务
/// </summary>
public class AppUserService : BaseService<AppUserEntity>, ITransient
{
    private readonly ISqlSugarRepository<AppUserEntity> _appUserRep;
    private readonly ISqlSugarClient _db;
    private readonly AuthManager _authManager;
    private readonly IEasyCachingProvider _cachingProvider;

    public AppUserService(ISqlSugarRepository<AppUserEntity> appUserRep, 
        ISqlSugarClient db,
        AuthManager authManager,
        IEasyCachingProvider cachingProvider) : base(appUserRep)
    {
        _appUserRep = appUserRep;
        _db = db;
        _authManager = authManager;
        _cachingProvider = cachingProvider;
    }

    /// <summary>
    /// 分页查询普通用户
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("分页查询普通用户")]
    [HttpGet("page")]
    public async Task<PageResult<AppUserOutput>> Page([FromQuery] AppUserPageInput input)
    {
        var query = _appUserRep.AsQueryable()
            .WhereIF(!string.IsNullOrWhiteSpace(input.Name), u => u.Name.Contains(input.Name))
            .WhereIF(input.Gender.HasValue, u => u.Gender == input.Gender)
            .WhereIF(!string.IsNullOrWhiteSpace(input.Mobile), u => u.Mobile.Contains(input.Mobile))
            .WhereIF(input.AuditStatus.HasValue, u => u.AuditStatus == input.AuditStatus)
            .WhereIF(input.StartTime.HasValue, u => u.CreatedTime >= input.StartTime)
            .WhereIF(input.EndTime.HasValue, u => u.CreatedTime <= input.EndTime)
            .OrderByDescending(u => u.CreatedTime);

        return await query.Select<AppUserOutput>().ToPagedListAsync(input);
    }

    /// <summary>
    /// 获取普通用户详情
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    [DisplayName("获取普通用户详情")]
    [HttpGet("{id}")]
    public async Task<AppUserOutput> Detail([FromRoute] long id)
    {
        return await _appUserRep.AsQueryable()
            .Where(u => u.Id == id)
            .Select<AppUserOutput>()
            .FirstAsync();
    }

    /// <summary>
    /// 审核普通用户
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("审核普通用户")]
    [HttpPost("audit")]
    [UnitOfWork]
    public async Task Audit([FromBody] AuditInput input)
    {
        if (input.Ids == null || !input.Ids.Any()) return;

        // 更新状态
        await _appUserRep.UpdateAsync(u => new AppUserEntity 
        { 
            AuditStatus = input.Status, 
            AuditRemark = input.Remark,
            UpdatedTime = DateTime.Now,
            UpdatedUserId = _authManager.UserId
        }, u => input.Ids.Contains(u.Id));
    }

    #region 统一成员管理 (领队/教练/运动员)

    /// <summary>
    /// 统一分页查询成员
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpGet("member/page")]
    [DisplayName("统一分页查询成员")]
    public async Task<PageResult<MemberOutput>> MemberPage([FromQuery] MemberQueryInput input)
    {
        var (userId, merchantCertificationId) = await GetCurrentUserAndMerchantCertificationId();

        var query = _appUserRep.AsQueryable()
            .Where(x => x.PersonType == input.PersonType && !x.DeleteMark)
            .WhereIF(!string.IsNullOrWhiteSpace(input.Name), x => x.Name.Contains(input.Name))
            .WhereIF(input.Gender.HasValue, x => x.Gender == input.Gender)
            .WhereIF(!string.IsNullOrWhiteSpace(input.Mobile), x => x.Mobile.Contains(input.Mobile))
            .WhereIF(!string.IsNullOrWhiteSpace(input.IdCardNumber), u => u.IdCardNumber.Contains(input.IdCardNumber))
            .WhereIF(input.PersonType == PersonType.Coach && !string.IsNullOrWhiteSpace(input.SkillLevel), x => x.SkillLevel == input.SkillLevel)
            .WhereIF(input.PersonType == PersonType.Coach && input.CertificationStatus.HasValue, x => x.CertificationStatus == input.CertificationStatus)
            .WhereIF(input.StartTime.HasValue, u => u.CreatedTime >= input.StartTime)
            .WhereIF(input.EndTime.HasValue, u => u.CreatedTime <= input.EndTime)
            .OrderByDescending(x => x.CreatedTime);

        // 权限过滤 (管理员可看全部，这里简化的商户隔离逻辑)
        if (merchantCertificationId.HasValue)
        {
            query = query.Where(x => x.MerchantCertificationId == merchantCertificationId.Value);
        }
        else
        {
            // 这里根据实际业务，如果普通用户只能看自己创建的，需要这个过滤
            query = query.Where(x => x.CreatedUserId == userId && x.MerchantCertificationId == null);
        }

        var list = await query.ToPagedListAsync(input);
        var result = list.Adapt<PageResult<MemberOutput>>();
        
        // 设置Age字段：优先使用数据库中的Age，如果没有则根据BirthDate计算
        foreach (var item in result.Rows)
        {
            if (item.Age.HasValue)
            {
                // 数据库中已有Age，直接使用
                continue;
            }
            // 数据库中没有Age，根据BirthDate动态计算
            if (item.BirthDate.HasValue)
            {
                item.Age = MemberOutput.CalculateAgeFromBirthDate(item.BirthDate);
            }
        }
        
        return result;
    }

    /// <summary>
    /// 统一新增/编辑成员
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpPost("member/save")]
    [DisplayName("统一新增/编辑成员")]
    public async Task SaveUnifiedMember(CreateOrUpdateMemberInput input)
    {
        // 仅在新增运动员时验证验证码
        if (!input.Id.HasValue && input.PersonType == PersonType.Athlete)
        {
            if (string.IsNullOrWhiteSpace(input.VerificationCode))
            {
                throw Oops.Bah("验证码不能为空");
            }

            var cacheKey = $"sms:code:{input.Mobile}";
            var cachedCodeResult = _cachingProvider.Get<string>(cacheKey);
            string? cachedCode = cachedCodeResult.Value;
            if (!cachedCodeResult.HasValue || cachedCode != input.VerificationCode)
            {
                throw Oops.Bah("验证码错误或已过期");
            }
        }

        var (userId, merchantCertificationId) = await GetCurrentUserAndMerchantCertificationId();

        // 基于手机号的全局唯一性校验（不区分PersonType和权限）
        var existingByPhone = await _appUserRep.AsQueryable()
            .Where(x => x.Mobile == input.Mobile && !x.DeleteMark)
            .FirstAsync();

        AppUserEntity entity;
        bool isNewRecord = false;

        if (input.Id.HasValue)
        {
            // 编辑模式
            entity = await _appUserRep.GetByIdAsync(input.Id.Value);
            if (entity == null || entity.DeleteMark) throw Oops.Bah("成员不存在");
            await CheckPermission(entity);
            
            // 检查手机号是否被其他记录占用
            if (existingByPhone != null && existingByPhone.Id != input.Id.Value)
            {
                throw Oops.Bah($"该手机号已被其他成员使用");
            }
            
            entity.UpdatedUserId = _authManager.UserId;
            entity.UpdatedTime = DateTime.Now;
        }
        else if (existingByPhone != null)
        {
            // 手机号已存在，更新现有记录
            entity = existingByPhone;
            
            // 检查权限
            await CheckPermission(entity);
            
            entity.UpdatedUserId = _authManager.UserId;
            entity.UpdatedTime = DateTime.Now;
        }
        else
        {
            // 手机号不存在，创建新记录
            isNewRecord = true;
            entity = new AppUserEntity
            {
                Id = YitIdHelper.NextId(),
                PersonType = input.PersonType,
                MerchantCertificationId = merchantCertificationId,
                CreatedUserId = userId,
                CreatedTime = DateTime.Now,
                Status = AvailabilityStatus.Enable,
                AuditStatus = AuditStatus.Pass
            };
        }

        // 更新用户信息字段
        entity.Name = input.Name;
        entity.Gender = input.Gender;
        entity.IdCardNumber = input.IdCardNumber;
        entity.IdCardImageUrl = input.IdCardImageUrl;
        entity.PassportPhotoUrl = input.PassportPhotoUrl;
        entity.Mobile = input.Mobile;
        entity.Remark = input.Remark;
        entity.AuditRemark = "";
        
        // 保存出生日期
        entity.BirthDate = input.BirthDate;
        
        // 保存年龄字段：如果用户填写了年龄，直接保存；如果没有填写但有出生日期，可以在查询时动态计算
        entity.Age = input.Age;
        
        // 更新运动员类型（如果是新记录或需要更新）
        if (isNewRecord || entity.PersonType != input.PersonType)
        {
            entity.PersonType = input.PersonType;
        }
        
        // 更新认证单位信息
        if (isNewRecord || entity.MerchantCertificationId != merchantCertificationId)
        {
            entity.MerchantCertificationId = merchantCertificationId;
        }
        
        if (input.PersonType == PersonType.Coach)
        {
            entity.SkillLevel = input.SkillLevel;
            entity.CertificationStatus = input.CertificationStatus;
        }

        await _appUserRep.InsertOrUpdateAsync(entity);
    }

    #endregion

    #region 领队/教练管理 (向下兼容)

    private async Task<(long userId, long? merchantCertificationId)> GetCurrentUserAndMerchantCertificationId()
    {
        var userId = _authManager.UserId;
        
        // 直接查询单位认证表，检查是否有审核通过的认证记录
        var certification = await _db.Queryable<MerchantCertification>()
            .FirstAsync(c => c.UserId == userId && !c.DeleteMark);
        
        // 有审核通过的认证就返回认证ID，否则返回null
        return (userId, certification?.Id);
    }

    private async Task CheckPermission(AppUserEntity entity)
    {
        var (userId, merchantCertificationId) = await GetCurrentUserAndMerchantCertificationId();
        
        if (merchantCertificationId.HasValue)
        {
            if (entity.MerchantCertificationId != merchantCertificationId.Value) throw Oops.Bah("无权操作该成员");
        }
        else
        {
            if (entity.CreatedUserId != userId || entity.MerchantCertificationId != null) throw Oops.Bah("无权操作该成员");
        }
    }

    /// <summary>
    /// 删除成员
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    [DisplayName("删除成员")]
    [HttpPost("member/delete")]
    public async Task DeleteMember([FromBody] long id)
    {
        var entity = await _appUserRep.GetByIdAsync(id);
        if (entity == null || entity.DeleteMark) throw Oops.Bah("成员不存在");
        
        await CheckPermission(entity);

        entity.DeleteMark = true;
        entity.UpdatedUserId = _authManager.UserId;
        entity.UpdatedTime = DateTime.Now;
        
        await _appUserRep.UpdateAsync(entity);
    }

    /// <summary>
    /// 批量删除成员
    /// </summary>
    /// <param name="ids"></param>
    /// <returns></returns>
    [HttpPost("member/batchDelete")]
    [DisplayName("批量删除成员")]
    public async Task BatchDeleteMember([FromBody] List<long> ids)
    {
        if (ids == null || !ids.Any()) throw Oops.Bah("请选择要删除的记录");

        // 逻辑删除
        await _appUserRep.UpdateAsync(x => new AppUserEntity { DeleteMark = true }, x => ids.Contains(x.Id));
    }

    /// <summary>
    /// 变更成员状态
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("变更成员状态")]
    [HttpPost("member/status")]
    public async Task ChangeMemberStatus(ChangeMemberStatusInput input)
    {
        var entity = await _appUserRep.GetByIdAsync(input.Id);
        if (entity == null || entity.DeleteMark) throw Oops.Bah("成员不存在");
        
        await CheckPermission(entity);

        entity.Status = input.Status;
        entity.UpdatedUserId = _authManager.UserId;
        entity.UpdatedTime = DateTime.Now;

        await _appUserRep.UpdateAsync(entity);
    }

    #endregion
}