private void SetupHttpCaching(RenderModel model, LocationViewModel viewModel, IExpiryDateSource expiryDate)
{
var cacheService = new HttpCachingService();
var cacheExpiryProperties = new IExpiryDateSource[] { expiryDate, new ExpiryDateFromPropertyValue(model.Content, "latestUnpublishDate_Latest") };
var ukNow = DateTime.Now.ToUkDateTime();
const int oneHour = 3600;
// Ensure we don't cache the page longer than the opening times data passed to the view remains valid.
// In the last hour before closing there's a countdown, so it's only correct for one minute.
// If there's no opening times data, just fall back to the default cache expiry settings.
if (viewModel.OpenUntil.HasValue)
{
var secondsRemaining = Convert.ToInt32((viewModel.OpenUntil - ukNow).Value.TotalSeconds);
if (secondsRemaining <= oneHour)
{
secondsRemaining = 60;
}
cacheService.SetHttpCacheHeadersFromUmbracoContent(model.Content, UmbracoContext.Current.InPreviewMode, Response.Cache, cacheExpiryProperties, secondsRemaining);
}
else if (viewModel.NextOpen.HasValue)
{
var secondsRemaining = Convert.ToInt32((viewModel.NextOpen - ukNow).Value.TotalSeconds);
if (secondsRemaining <= oneHour)
{
secondsRemaining = 60;
}
cacheService.SetHttpCacheHeadersFromUmbracoContent(model.Content, UmbracoContext.Current.InPreviewMode, Response.Cache, cacheExpiryProperties, secondsRemaining);
}
else
{
cacheService.SetHttpCacheHeadersFromUmbracoContent(model.Content, UmbracoContext.Current.InPreviewMode, Response.Cache, cacheExpiryProperties);
}
}
public void PreviewModeSetsCacheabilityToNoCache()
{
var content = new Mock <IPublishedContent>();
var prop = new Mock <IPublishedProperty>();
content.Setup(x => x.GetProperty(It.IsAny <string>())).Returns(prop.Object);
var cache = new Mock <HttpCachePolicyBase>();
cache.CallBase = true;
cache.Setup(x => x.SetCacheability(It.IsAny <HttpCacheability>()));
cache.Setup(x => x.AppendCacheExtension(It.IsAny <string>()));
cache.Setup(x => x.SetMaxAge(It.IsAny <TimeSpan>()));
var service = new HttpCachingService();
service.SetHttpCacheHeadersFromUmbracoContent(content.Object, true, cache.Object);
cache.Verify(x => x.SetCacheability(HttpCacheability.NoCache));
}