public function renderLatestBlogPosts()
{
$cacheId = $this->blogOptions->getCacheKey();
$posts = $this->cache->contains($cacheId) ? $this->cache->fetch($cacheId) : [];
$elements = [];
foreach ($posts as $post) {
$elements[] = sprintf('<li><a target="_blank" href="%s">%s</a></li>', $post['link'], $post['title']);
}
return sprintf('<ul class="fh5co-links blog-posts">%s</ul>', implode('', $elements));
}
/**
* @test
*/
public function cacheIsDeletedWhenFeedHasChyanged()
{
$this->templatesCache->save('foo', 'bar');
$this->feedCache->save($this->options->getCacheKey(), [['link' => 'something else']]);
$this->service->refreshFeed();
$this->assertFalse($this->templatesCache->contains('foo'));
}
public function refreshFeed() : array
{
$cacheId = $this->blogOptions->getCacheKey();
$feed = Reader::import($this->blogOptions->getFeed());
$feed = $this->processFeed($feed);
// If no feed has been cached yet, cache current one and return
if (!$this->feedCache->contains($cacheId)) {
$this->templatesCache->deleteAll();
$this->feedCache->save($cacheId, $feed);
return $feed;
}
// Check if the last feed has changed, otherwise, return
$cachedFeed = $this->feedCache->fetch($cacheId);
if ($cachedFeed[0]['link'] === $feed[0]['link']) {
return $feed;
}
// If the feed has changed, clear all cached elements so that views are refreshed, and cache feed too
$this->templatesCache->deleteAll();
$this->feedCache->save($cacheId, $feed);
return $feed;
}