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.Infrastructure.Aliyun.Ocr;
using YD_Event.Core.Enum;
using Mapster;

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 OcrService _ocrService;

    public AppUserService(ISqlSugarRepository<AppUserEntity> appUserRep, 
        ISqlSugarClient db,
        AuthManager authManager,
        OcrService ocrService) : base(appUserRep)
    {
        _appUserRep = appUserRep;
        _db = db;
        _authManager = authManager;
        _ocrService = ocrService;
    }

    /// <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()
            .Where(u => u.PersonType == PersonType.User) // 仅查询普通用户
            .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, merchantId) = await GetCurrentUserAndMerchantId();

        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.Phone), x => x.Mobile.Contains(input.Phone))
            .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 (merchantId.HasValue)
        {
            query = query.Where(x => x.MerchantId == merchantId.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.MerchantId == null);
        }

        var list = await query.ToPagedListAsync(input);
        return list.Adapt<PageResult<MemberOutput>>();
    }

    /// <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)
    {
        var (userId, merchantId) = await GetCurrentUserAndMerchantId();

        // 校验唯一性 (手机号或身份证号，具体根据角色定)
        // 运动员主要查身份证，领队教练查手机号。这里综合校验。
        var queryPhone = _appUserRep.AsQueryable()
            .Where(x => x.Mobile == input.Phone && x.PersonType == input.PersonType && !x.DeleteMark);
            
        var queryIdCard = _appUserRep.AsQueryable()
            .Where(x => x.IdCardNumber == input.IdCard && x.PersonType == input.PersonType && !x.DeleteMark);

        if (input.Id.HasValue)
        {
            queryPhone = queryPhone.Where(x => x.Id != input.Id.Value);
            queryIdCard = queryIdCard.Where(x => x.Id != input.Id.Value);
        }

        if (merchantId.HasValue)
        {
            queryPhone = queryPhone.Where(x => x.MerchantId == merchantId.Value);
            queryIdCard = queryIdCard.Where(x => x.MerchantId == merchantId.Value);
        }
        else
        {
            queryPhone = queryPhone.Where(x => x.CreatedUserId == userId && x.MerchantId == null);
            queryIdCard = queryIdCard.Where(x => x.CreatedUserId == userId && x.MerchantId == null);
        }

        // 只有领队和教练强校验手机号
        if (input.PersonType == PersonType.Leader || input.PersonType == PersonType.Coach)
        {
             if (await queryPhone.AnyAsync()) throw Oops.Bah($"该手机号的成员已存在");
        }
        // 运动员强校验身份证
        if (input.PersonType == PersonType.Athlete)
        {
             if (await queryIdCard.AnyAsync()) throw Oops.Bah($"该身份证号的成员已存在");
        }

        AppUserEntity entity;
        if (input.Id.HasValue)
        {
            entity = await _appUserRep.GetByIdAsync(input.Id.Value);
            if (entity == null || entity.DeleteMark) throw Oops.Bah("成员不存在");
            await CheckPermission(entity);
            
            entity.UpdatedUserId = _authManager.UserId;
            entity.UpdatedTime = DateTime.Now;
        }
        else
        {
            entity = new AppUserEntity
            {
                Id = YitIdHelper.NextId(),
                PersonType = input.PersonType,
                MerchantId = merchantId,
                CreatedUserId = userId,
                CreatedTime = DateTime.Now,
                Status = AvailabilityStatus.Enable,
                AuditStatus = AuditStatus.Pass
            };
        }

        entity.Name = input.Name;
        entity.Gender = input.Gender;
        entity.IdCardNumber = input.IdCard;
        entity.IdCardImageUrl = input.IdCardUrl;
        entity.Mobile = input.Phone;
        entity.Remark = input.Remark;
        entity.AuditRemark = ""; 
        
        // 计算年龄逻辑
        if (input.BirthDate.HasValue)
        {
            entity.BirthDate = input.BirthDate;
            var today = DateTime.Today;
            var age = today.Year - input.BirthDate.Value.Year;
            if (input.BirthDate.Value.Date > today.AddYears(-age)) age--;
            entity.Age = age;
        }
        else
        {
            entity.Age = input.Age;
        }
        
        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? merchantId)> GetCurrentUserAndMerchantId()
    {
        var userId = _authManager.UserId;
        var merchant = await _db.Queryable<YD_Event.Core.Entities.Merchant>()
            .FirstAsync(m => m.CreatedUserId == userId && !m.DeleteMark);
        return (userId, merchant?.Id);
    }

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

    /// <summary>
    /// 识别身份证信息
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpPost("member/ocr")]
    [DisplayName("OCR识别身份证")]
    public async Task<OcrResult> RecognizeIdCard([FromBody] AthleteOcrInput input)
    {
        return await _ocrService.RecognizeIdCardAsync(input.ImageUrl);
    }

    #endregion
}