using Microsoft.Extensions.Logging;
using QYZH.InteractiveMagazine.IService;
using QYZH.InteractiveMagazine.IService.Dto;
using QYZH.InteractiveMagazine.Models.Common;
using QYZH.InteractiveMagazine.Models.Dto;
using QYZH.InteractiveMagazine.Models.Entity;
using QYZH.InteractiveMagazine.Repository;
using SqlSugar;
using System.Linq.Expressions;

namespace QYZH.InteractiveMagazine.Service;

public class WxUserService(BaseRepository<WxUser> wxUserRepository, ILogger<WxUserService> _logger) : BaseRepository<WxUser>, IWxUserService
{

    public async Task<WxUserOutput> CreateAsync(WxUserInput input)
    {
        _logger.LogInformation("正在创建微信用户，OpenId: {OpenId}", input.OpenId);

        if (string.IsNullOrWhiteSpace(input.OpenId))
        {
            throw new BusinessException("OpenId不能为空", 400);
        }

        var existingUser = await wxUserRepository.GetFirstAsync(a => a.OpenId == input.OpenId);
        if (existingUser != null)
        {
            _logger.LogWarning("创建微信用户失败，OpenId已存在: {OpenId}", input.OpenId);
            throw new BusinessException("OpenId已存在", 400);
        }

        var wxUser = new WxUser
        {

            OpenId = input.OpenId.Trim(),
            UnionId = input.UnionId,
            NickName = input.NickName,
            AvatarUrl = input.AvatarUrl,
            Phone = input.Phone,
            Type = input.Type,
            Status = input.Status,
            Pwd = input.Pwd ?? string.Empty,
            CreatedBy = "System",
            UpdatedBy = "System",
            CreatedAt = DateTime.Now,
            UpdatedAt = DateTime.Now,
            IsDeleted = false
        };

        var result = await wxUserRepository.InsertAsync(wxUser);
        if (!result)
        {
            _logger.LogError("微信用户创建失败，OpenId: {OpenId}", input.OpenId);
            throw new BusinessException("创建微信用户失败", 500);
        }

        _logger.LogInformation("微信用户创建成功，OpenId: {OpenId}, ID: {Id}", input.OpenId, wxUser.Id);

        return new WxUserOutput
        {
            Id = wxUser.Id,
            OpenId = wxUser.OpenId,
            UnionId = wxUser.UnionId,
            NickName = wxUser.NickName,
            AvatarUrl = wxUser.AvatarUrl,
            Phone = wxUser.Phone,
            Type = wxUser.Type,
            Status = wxUser.Status,
            CreatedBy = wxUser.CreatedBy,
            CreatedAt = wxUser.CreatedAt,
            UpdatedBy = wxUser.UpdatedBy,
            UpdatedAt = wxUser.UpdatedAt
        };
    }

    public async Task<WxUserOutput> UpdateAsync(long id, WxUserInput input)
    {
        _logger.LogInformation("正在更新微信用户，ID: {Id}", id);

        var wxUser = await wxUserRepository.GetByIdAsync(id);
        if (wxUser == null)
        {
            _logger.LogWarning("未找到要更新的微信用户，ID: {Id}", id);
            throw new BusinessException("微信用户不存在", 404);
        }

        if (!string.IsNullOrWhiteSpace(input.OpenId) && input.OpenId != wxUser.OpenId)
        {
            var existingUser = await wxUserRepository.GetFirstAsync(a => a.OpenId == input.OpenId.Trim());
            if (existingUser != null && existingUser.Id != id)
            {
                _logger.LogWarning("更新微信用户失败，OpenId已存在: {OpenId}", input.OpenId);
                throw new BusinessException("OpenId已存在", 400);
            }

            wxUser.OpenId = input.OpenId.Trim();
        }

        wxUser.UnionId = input.UnionId ?? wxUser.UnionId;
        wxUser.NickName = input.NickName ?? wxUser.NickName;
        wxUser.AvatarUrl = input.AvatarUrl ?? wxUser.AvatarUrl;
        wxUser.Phone = input.Phone ?? wxUser.Phone;
        wxUser.Type = input.Type ?? wxUser.Type;
        wxUser.Status = input.Status ?? wxUser.Status;
        wxUser.Pwd = input.Pwd ?? wxUser.Pwd;

        wxUser.UpdatedBy = "System";
        wxUser.UpdatedAt = DateTime.Now;

        var result = await wxUserRepository.UpdateAsync(wxUser);
        if (!result)
        {
            _logger.LogError("微信用户更新失败，ID: {Id}", id);
            throw new BusinessException("更新微信用户失败", 500);
        }

        _logger.LogInformation("微信用户更新成功，ID: {Id}", id);

        return new WxUserOutput
        {
            Id = wxUser.Id,
            OpenId = wxUser.OpenId,
            UnionId = wxUser.UnionId,
            NickName = wxUser.NickName,
            AvatarUrl = wxUser.AvatarUrl,
            Phone = wxUser.Phone,
            Type = wxUser.Type,
            Status = wxUser.Status,
            CreatedBy = wxUser.CreatedBy,
            CreatedAt = wxUser.CreatedAt,
            UpdatedBy = wxUser.UpdatedBy,
            UpdatedAt = wxUser.UpdatedAt
        };
    }

    public async Task DeleteAsync(long id)
    {
        _logger.LogInformation("正在删除微信用户，ID: {Id}", id);

        var wxUser = await wxUserRepository.GetByIdAsync(id);
        if (wxUser == null)
        {
            _logger.LogWarning("未找到要删除的微信用户，ID: {Id}", id);
            throw new BusinessException("微信用户不存在", 404);
        }

        var result = await wxUserRepository.DeleteByIdAsync(id);
        if (!result)
        {
            _logger.LogError("微信用户删除失败，ID: {Id}", id);
            throw new BusinessException("删除微信用户失败", 500);
        }

        _logger.LogInformation("微信用户删除成功，ID: {Id}", id);
    }

    public async Task<WxUserOutput> GetByIdAsync(long id)
    {
        var wxUser = await wxUserRepository.GetByIdAsync(id);
        if (wxUser == null)
        {

            throw new BusinessException("微信用户不存在", 404);
        }

        return new WxUserOutput
        {
            Id = wxUser.Id,
            OpenId = wxUser.OpenId,
            UnionId = wxUser.UnionId,
            NickName = wxUser.NickName,
            AvatarUrl = wxUser.AvatarUrl,
            Phone = wxUser.Phone,
            Type = wxUser.Type,
            Status = wxUser.Status,
            CreatedBy = wxUser.CreatedBy,
            CreatedAt = wxUser.CreatedAt,
            UpdatedBy = wxUser.UpdatedBy,
            UpdatedAt = wxUser.UpdatedAt
        };
    }

    public async Task<PageListModel<WxUserOutput>> GetListAsync(WxUserQueryInput input)
    {

        if (input.PageIndex <= 0)
        {
            throw new BusinessException("页码必须大于0", 400);
        }

        if (input.PageSize <= 0 || input.PageSize > 100)
        {
            throw new BusinessException("每页条数必须在1-100之间", 400);
        }
        RefAsync<int> totalNumber = 0;

        var pageResult = await wxUserRepository.Queryable()
               .WhereIF(!string.IsNullOrWhiteSpace(input.NickName), a => a.NickName == input.NickName)
                .OrderByDescending(a => a.CreatedAt)
                 .Select(wxUser => new WxUserOutput
                 {
                     Id = wxUser.Id,
                     OpenId = wxUser.OpenId,
                     UnionId = wxUser.UnionId,
                     NickName = wxUser.NickName,
                     AvatarUrl = wxUser.AvatarUrl,
                     Phone = wxUser.Phone,
                     Type = wxUser.Type,
                     Status = wxUser.Status,
                     CreatedBy = wxUser.CreatedBy,
                     CreatedAt = wxUser.CreatedAt,
                     UpdatedBy = wxUser.UpdatedBy,
                     UpdatedAt = wxUser.UpdatedAt
                 }, true)
                  .ToPageListAsync(input.PageIndex, input.PageSize, totalNumber);

        return new PageListModel<WxUserOutput>(pageResult, input.PageIndex, input.PageSize, totalNumber);
    }

   
}