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using System;
using System.Net.Mail;
namespace Timeline.Models.Validation
{
public abstract class OptionalStringValidator : IValidator
{
public bool Validate(object value, out string message)
{
if (value == null)
{
message = ValidationConstants.SuccessMessage;
return true;
}
if (value is string s)
{
if (s.Length == 0)
{
message = ValidationConstants.SuccessMessage;
return true;
}
return DoValidate(s, out message);
}
else
{
message = "Value is not of type string.";
return false;
}
}
protected abstract bool DoValidate(string value, out string message);
}
public static class UserDetailValidators
{
public class QQValidator : OptionalStringValidator
{
protected override bool DoValidate(string value, out string message)
{
if (value.Length < 5)
{
message = "QQ is too short.";
return false;
}
if (value.Length > 11)
{
message = "QQ is too long.";
return false;
}
foreach (var c in value)
{
if (!char.IsDigit(c))
{
message = "QQ must only contain digit.";
return false;
}
}
message = ValidationConstants.SuccessMessage;
return true;
}
}
public class EMailValidator : OptionalStringValidator
{
protected override bool DoValidate(string value, out string message)
{
if (value.Length > 50)
{
message = "E-Mail is too long.";
return false;
}
try
{
var _ = new MailAddress(value);
}
catch (FormatException)
{
message = "The format of E-Mail is bad.";
return false;
}
message = ValidationConstants.SuccessMessage;
return true;
}
}
public class PhoneNumberValidator : OptionalStringValidator
{
protected override bool DoValidate(string value, out string message)
{
if (value.Length > 14)
{
message = "Phone number is too long.";
return false;
}
foreach (var c in value)
{
if (!char.IsDigit(c))
{
message = "Phone number can only contain digit.";
return false;
}
}
message = ValidationConstants.SuccessMessage;
return true;
}
}
}
}
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