using YLErp.Helpers;

namespace YLErp.Modules.SystemModule
{
    /// <summary>
    /// 系统用户密码服务
    /// </summary>
    public class SysUserPasswordService : BaseService<BaseOUDAL.ErpBaseContext>
    {
        public SysUserPasswordService(OptUserInfo userInfo) : base(userInfo)
        {

        }

        /// <summary>
        /// 变更密码
        /// </summary>
        public void ChangePassword(UserChangePasswordRequest reqModel)
        {
            if (reqModel is null)
            {
                throw new ArgumentNullException(nameof(reqModel));
            }

            if (string.IsNullOrWhiteSpace(reqModel.Password))
            {
                throw new ServiceException("输入错误,缺少当前密码");
            }

            if (string.IsNullOrWhiteSpace(reqModel.NewPassword))
            {
                throw new ServiceException("输入错误,缺少新密码");
            }

            if (reqModel.NewPassword == null || reqModel.NewPassword.Length < 6 || !reqModel.NewPassword.Any(n => (n >= 'a' && n <= 'z') || (n >= 'A' && n <= 'Z')) || !reqModel.NewPassword.Any(n => n >= '0' && n <= '9'))
            {
                throw new ServiceException("密码长度至少6位并且包含英文字母和数字");
            }

            var user = DbContext.SystemUsers.Where(u => u.Id == reqModel.UserId).FirstOrDefault();

            if (user == null)
            {
                throw new ServiceException("用户信息不存在");
            }

            if (!DataHelper.EncryptPassword(user.LoginName.ToLowerInvariant(), reqModel.Password).Equals(user.Password, StringComparison.OrdinalIgnoreCase))
            {
                throw new ServiceException("当前密码错误");
            }

            user.Password = DataHelper.EncryptPassword(user.LoginName.ToLowerInvariant(), reqModel.NewPassword);

            DbContext.SaveChanges();
        }
    }
}