/// <summary>
/// Gets the mood of a post using the viralheat API
/// </summary>
/// <param name="text">The post to be analyzed</param>
/// <returns>"negative" or "positive"</returns>
public static Sentiment GetSentimentMood(string text)
{
Sentiment result = new Sentiment();
string viralHeatApiKey = "&api_key=" + ChartManager.GetViralHeatAPIKey();
//if(firstAPIUsed)
//viralHeatApiKey = "&api_key=olGbEN1IUhKjrvgQvZOt";
string url = "http://www.viralheat.com/api/sentiment/review.json?text=" + text + viralHeatApiKey;
string jsonString;
try
{
jsonString = new System.Net.WebClient().DownloadString(url);
}
catch (Exception e)
{
//Error with the webservice
System.Diagnostics.Debug.WriteLine("========================");
System.Diagnostics.Debug.WriteLine("Error with webservice");
System.Diagnostics.Debug.WriteLine(e.ToString());
System.Diagnostics.Debug.WriteLine("========================");
//done = true;
return(null);
}
if (jsonString.Contains("Error"))
{
//Post was probably not in english, skip it
if (jsonString.Contains("Over quota limit"))
{
//firstAPIUsed = true;
//ChartManager.toggleLanguageAnalysis();
System.Diagnostics.Debug.WriteLine("=================================");
System.Diagnostics.Debug.WriteLine("Out of ViralHeat Queries");
System.Diagnostics.Debug.WriteLine("=================================");
result = new Sentiment();
result.mood = "unknown";
result.prob = -1;
result.text = text;
result = null;
}
else
{
//ChartManager.setLanguageAnalysis(false);
System.Diagnostics.Debug.WriteLine("========================");
System.Diagnostics.Debug.WriteLine("Error with webservice");
System.Diagnostics.Debug.WriteLine(url);
System.Diagnostics.Debug.WriteLine(jsonString);
System.Diagnostics.Debug.WriteLine("========================");
result = null;
}
}
else
{
result = JsonConvert.DeserializeObject <Sentiment>(jsonString);
}
return(result);
}