/// <summary>
/// Get's the details for the passed in best story IDs
/// </summary>
/// <param name="storyIDs"></param>
/// <returns></returns>
public static async Task <List <BestStoriesModel> > GetBestStories(List <int> storyIDs, IOptions <AppSettingsModel> appSettings)
{
// No IDs, no results
if (storyIDs.Count == 0)
{
return(new List <BestStoriesModel>());
}
// Setup our cache, API URLs and variables
ObjectCache cache = MemoryCache.Default;
var bestStores = cache["bestStories"] as List <BestStoriesModel>;
var apiURL = appSettings.Value.HNStoryDetailsURL;
// Check the cache if we already have the stories stored
if (bestStores == null)
{
// Setup the expiration for the cache
CacheItemPolicy policy = new CacheItemPolicy();
policy.AbsoluteExpiration = DateTimeOffset.Now.AddSeconds(CACHETIMEOUT);
// Setup our best stories list object
bestStores = new List <BestStoriesModel>();
// Loop through our story IDs and generate a list of best stories
using (HttpClient httpClient = new HttpClient())
{
foreach (var storyID in storyIDs)
{
// Await the response from the cient API
HttpResponseMessage response = await httpClient.GetAsync(apiURL + storyID + ".json");
if (response.IsSuccessStatusCode)
{
var respData = await response.Content.ReadAsStringAsync();
var story = JsonConvert.DeserializeObject <HNStoryModel>(respData);
var hnstory = new BestStoriesModel();
hnstory.postedBy = story.by;
hnstory.title = story.title;
hnstory.time = UnixTimeStampToDateTime(story.time);
hnstory.uri = story.url;
hnstory.score = story.score;
hnstory.commentCount = story.descendants;
bestStores.Add(hnstory);
}
}
}
// And now cache the data
cache.Set("bestStories", bestStores, policy);
}
return(bestStores);
}
public async Task <List <BestStoriesModel> > Get()
{
// Setup variables
string respString;
List <int> stories;
List <BestStoriesModel> bestStories;
// Setup cache expiration
var cacheOptions = new MemoryCacheEntryOptions().SetSlidingExpiration(TimeSpan.FromMinutes(cacheExpirationMin));
// Now check if we have cached best stories, else pull them from the HackerNewsAPI
if (!_cache.TryGetValue("bestStories", out bestStories))
{
// First get the story IDs
using (HttpClient httpClient = new HttpClient())
{
// Await the response from the cient API
HttpResponseMessage response = await httpClient.GetAsync(HNBestStoriesURL);
if (response.IsSuccessStatusCode)
{
respString = await response.Content.ReadAsStringAsync();
stories = JsonConvert.DeserializeObject <List <int> >(respString);
}
else
{
// Return an empty value
return(new List <BestStoriesModel>());
}
}
// If we successfully obtained story IDs, we get their author and title, else return empty set
if (stories.Count > 0)
{
// Setup our best stories list object
bestStories = new List <BestStoriesModel>();
// Loop through our story IDs and generate a list of best stories
using (HttpClient httpClient = new HttpClient())
{
foreach (var storyID in stories)
{
// Await the response from the cient API
HttpResponseMessage response = await httpClient.GetAsync(HNStoryDetailsURL + storyID + ".json");
if (response.IsSuccessStatusCode)
{
var respData = await response.Content.ReadAsStringAsync();
var story = JsonConvert.DeserializeObject <HNStoryModel>(respData);
var hnstory = new BestStoriesModel();
hnstory.author = story.by;
hnstory.title = story.title;
bestStories.Add(hnstory);
}
else
{
// Return an empty value
return(new List <BestStoriesModel>());
}
}
}
// Now cache the stories
_cache.Set("bestStories", bestStories, cacheOptions);
}
else
{
// Return an empty value
return(new List <BestStoriesModel>());
}
}
return(bestStories);
}
