using YD_Event.Application.Registration.Dtos;
using YD_Event.Core.Entities;
using MiniExcelLibs;

namespace YD_Event.Application.Registration;

/// <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;

    public EventRegistrationService(
        ISqlSugarRepository<EventRegistration> repository,
        ISqlSugarRepository<EventRegistrationItem> itemRepository,
        ISqlSugarRepository<EventRegistrationPerson> personRepository,
        ISqlSugarRepository<EventRegistrationPayment> paymentRepository) : base(repository)
    {
        _repository = repository;
        _itemRepository = itemRepository;
        _personRepository = personRepository;
        _paymentRepository = paymentRepository;
    }

    /// <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()
            .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,
                UnitName = x.TeamName,
                ContactName = x.ContactName,
                ContactPhone = x.ContactPhone,
                TotalPersonCount = x.TotalPersonCount,
                IsUploadMaterial = !string.IsNullOrEmpty(x.MaterialUrl),
                PaymentMethod = x.PaymentMethod,
                OrderNo = x.OrderNo,
                TotalAmount = x.TotalAmount,
                PaymentStatus = x.PaymentStatus,
                PaymentProofUrl = x.PaymentProofUrl,
                RegistrationTime = x.RegistrationTime,
                RegistrationStatus = x.RegistrationStatus
            });

        var result = await query.ToPagedListAsync(input);

        // 填充下拉详情
        if (result.Rows.Any())
        {
            var regIds = result.Rows.Select(x => x.Id).ToList();
            var items = await _itemRepository.GetListAsync(x => regIds.Contains(x.RegistrationId));
            var persons = await _personRepository.GetListAsync(x => regIds.Contains(x.RegistrationId));

            foreach (var dto in result.Rows)
            {
                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();
                    
                    // 构造参与人信息字符串
                    var personInfo = string.Join(";", myPersons.Select(p => $"{p.Name}/{p.Gender}/{p.Age}/{p.IdCard}"));
                    if (personInfo.Length > 100) personInfo = personInfo.Substring(0, 97) + "..."; // 截断

                    var detail = new RegistrationItemDetailDto
                    {
                        ProjectName = item.ProjectName,
                        GroupName = item.GroupName,
                        ParticipantInfo = personInfo
                    };
                    dto.Items.Add(detail);
                }
            }
        }
        return result;
    }

    /// <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;
        
        await _repository.UpdateAsync(x => new EventRegistration 
        { 
            RegistrationStatus = input.RegistrationStatus,
            ReviewRemark = input.ReviewRemark,
            ReviewTime = DateTime.Now
        }, x => input.Ids.Contains(x.Id));
    }

    /// <summary>
    /// 导出报名
    /// </summary>
    [DisplayName("导出报名")]
    public async Task<byte[]> Export(RegistrationQueryInput input)
    {
        var list = await _repository.AsQueryable()
            .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.PaymentStatus.HasValue, x => x.PaymentStatus == input.PaymentStatus)
            .Select(x => new 
            {
                x.RegistrationMode,
                x.TeamName,
                x.ContactName,
                x.ContactPhone,
                x.TotalPersonCount,
                x.PaymentMethod,
                x.TotalAmount,
                x.PaymentStatus,
                x.RegistrationTime,
                x.RegistrationStatus
            })
            .ToListAsync();
            
        using var stream = new MemoryStream();
        stream.SaveAs(list);
        return stream.ToArray();
    }
}