/// <summary>
/// Gets an <see cref="ICaptchaValue" /> associated with the specified token.
/// </summary>
/// <param name="token">The specified token.</param>
/// <param name="tokenType">The specified token type.</param>
/// <returns>
/// An instance of <see cref="ICaptchaValue" />.
/// </returns>
public virtual ICaptchaValue GetValue(string token, TokenType tokenType)
{
Validate.ArgumentNotNullOrEmpty(token, "token");
ICaptchaValue value;
switch (tokenType)
{
case TokenType.Drawing:
if (DrawingKeys.TryGetValue(token, out value))
{
DrawingKeys.Remove(token);
}
break;
case TokenType.Validation:
if (ValidateKeys.TryGetValue(token, out value))
{
ValidateKeys.Remove(token);
}
break;
default:
throw new ArgumentOutOfRangeException("tokenType");
}
return(value);
}
/// <summary>
/// Removes the specified token and <see cref="ICaptchaValue" /> to the storage.
/// </summary>
/// <param name="token">The specified token.</param>
public bool Remove(string token)
{
Validate.ArgumentNotNullOrEmpty(token, "token");
var remove = DrawingKeys.Remove(token);
var validation = ValidateKeys.Remove(token);
return(remove || validation);
}
/// <summary>
/// Adds the specified token and <see cref="ICaptchaValue" /> to the storage.
/// </summary>
/// <param name="captchaPair">
/// The specified <see cref="KeyValuePair{TKey,TValue}" />
/// </param>
public virtual void Add(KeyValuePair <string, ICaptchaValue> captchaPair)
{
Validate.ArgumentNotNull(captchaPair.Value, "captchaPair");
DrawingKeys.ClearIfNeed(MaxCount);
ValidateKeys.ClearIfNeed(MaxCount);
var entry = new KeyTimeEntry <string>(captchaPair.Key);
DrawingKeys.Add(entry, captchaPair.Value);
ValidateKeys.Add(entry, captchaPair.Value);
}
/// <summary>
/// Determines whether the <see cref="IStorageProvider" /> contains a specific token.
/// </summary>
/// <param name="token">The specified token.</param>
/// <param name="tokenType">The specified token type.</param>
/// <returns>
/// <c>True</c> if the value is found in the <see cref="IStorageProvider" />; otherwise <c>false</c>.
/// </returns>
public virtual bool IsContains(string token, TokenType tokenType)
{
Validate.ArgumentNotNullOrEmpty(token, "token");
switch (tokenType)
{
case TokenType.Drawing:
return(DrawingKeys.ContainsKey(token));
case TokenType.Validation:
return(ValidateKeys.ContainsKey(token));
default:
throw new ArgumentOutOfRangeException("tokenType");
}
}
