using System;
using System.Globalization;
using System.Windows.Controls;

namespace TeamAAS_VP.ValidationRules
{
    public class TCPPortValidationRule : ValidationRule
    {
        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
        {
            // 判断输入值是否为空
            if (value == null || string.IsNullOrWhiteSpace(value.ToString()))
            {
                return new ValidationResult(false, "The TCP port cannot be empty.".Replace("\\n", Environment.NewLine).Replace("\\t", "\t"));
            }

            string portString = value.ToString();
            if (int.TryParse(portString, out int port))
            {
                // 检查端口号是否在有效范围内 (0-65535)
                if (port > 0 && port <= 65535)
                {
                    return ValidationResult.ValidResult;
                }
                else
                {
                    return new ValidationResult(false, "The TCP port must be between 1 and 65535".Replace("\\n", Environment.NewLine).Replace("\\t", "\t"));
                }
            }
            else
            {
                return new ValidationResult(false, "Invalid TCP port format.".Replace("\\n", Environment.NewLine).Replace("\\t", "\t"));
            }
        }
    }
}