/// <summary>
/// Retrieve a Cache Info object from the CacheType and CacheDuration, if present.
/// </summary>
/// <param name="dc">Dialog Context to use for retrieving CacheType and CacheDuration from state.</param>
/// <returns>A <see cref="CacheInfo"/> object if <see cref="CacheDuration"/>
/// and <see cref="CacheType"/> resolve to valid values.</returns>
protected CacheInfo GetCacheInfo(DialogContext dc)
{
if (CacheType != null && CacheDuration != null)
{
var cacheType = CacheType.GetValueOrNull(dc.State);
var cacheDuration = CacheDuration.GetValueOrNull(dc.State);
if (cacheDuration.HasValue && cacheDuration.Value > 0 && !string.IsNullOrEmpty(cacheType))
{
// Valid ranges for CacheDuration are 60 < > 2592000
cacheDuration = Math.Min(Math.Max(60, cacheDuration.Value), 2592000);
return(new CacheInfo(cacheType: cacheType, cacheDuration: cacheDuration.Value));
}
}
return(null);
}
