public async Task <ActionResult <IEnumerable <Word> > > GetWordItems()
{
// get top words from cache
var topWords = TextAnalyzer.GetTopWords(_cache);
// in case there is nothing in the cache, generate top words now
// and update the cache
if (topWords == null)
{
var postStream = await client.GetStreamAsync("http://backend/v1/post");
var serializer = new DataContractJsonSerializer(typeof(List <Post>));
var posts = serializer.ReadObject(postStream) as List <Post>;
topWords = TextAnalyzer.AnalyseTextAndUpdateCache(posts, _cache);
}
// prepare result objects
var result = new List <Word>(topWords.Count);
for (int i = 0; i < topWords.Count; i++)
{
result.Add(new Word
{
Name = topWords[i].Key,
Size = topWords[i].Value,
});
}
return(result);
}
public async Task DeletePostItem(int postID)
{
await client.DeleteAsync("http://backend/v1/post/" + postID.ToString());
// update top words
var serializer = new DataContractJsonSerializer(typeof(List <Post>));
var postStream = await client.GetStreamAsync("http://backend/v1/post");
var posts = serializer.ReadObject(postStream) as List <Post>;
TextAnalyzer.AnalyseTextAndUpdateCache(posts, _cache);
}
public async Task <ActionResult <int> > PostPostItem(Post post)
{
var serializer = new DataContractJsonSerializer(typeof(List <Post>));
// send new post to backend
MemoryStream s = new MemoryStream();
serializer.WriteObject(s, post);
string stringData = System.Text.Encoding.UTF8.GetString(s.ToArray());
var contentData = new StringContent(stringData, System.Text.Encoding.UTF8, "application/json");
var response = await client.PostAsync("http://backend/v1/post", contentData);
// update top words
var postStream = await client.GetStreamAsync("http://backend/v1/post");
var posts = serializer.ReadObject(postStream) as List <Post>;
TextAnalyzer.AnalyseTextAndUpdateCache(posts, _cache);
return(0);
}