/// <summary>
/// Method to get the sentiment analysis for a text received as parameter.
/// </summary>
/// <param name="textToEvaluate"> Text received as parameter.</param>
/// <returns> Sentiment Object Model.</returns>
public async Task <SentimentObjectModel> GetSentimentAnalysisForTextAsync(string textToEvaluate)
{
var jsonArrayToSend = new JArray();
jsonArrayToSend.Add(new JObject(new JProperty(StringConstants.TextJsonProperty, textToEvaluate)));
var objectToAdd = new JObject(new JProperty(StringConstants.ArrayJsonProperty, jsonArrayToSend));
var myContent = JsonConvert.SerializeObject(jsonArrayToSend);
var httpClient = new HttpClient();
var httpContent = new StringContent(objectToAdd.ToString());
httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(StringConstants.ApplicationJsonMediaTypeHeaderValue);
var response = await httpClient.PostAsync(StringConstants.UriSentimentApi, httpContent);
if (!response.IsSuccessStatusCode)
{
throw new ArgumentException("Sentiment API doesn't work");
}
var contents = await response.Content.ReadAsStringAsync();
var resultJson = JObject.Parse(contents);
var resultValue = resultJson.GetValue(StringConstants.ArrayJsonProperty);
var polarity = int.Parse(resultValue[0][StringConstants.PolarityJsonProperty].ToString());
var sentimentObjectModel = new SentimentObjectModel
{
Text = textToEvaluate,
Polarity = polarity,
SentimentType = Enum.GetName(typeof(SentimentTypesEnum), polarity)
};
return(sentimentObjectModel);
}
public async Task <IActionResult> GetSentiment([FromBody] SentimentObjectModel text)
{
var result = await _setimentService.GetSentimentAnalysisForTextAsync(text.Text);
return(Ok(result));
}
