/// <summary>
/// This method implements retry logic to get a word (specific method implemented in base class)
/// This method builds the response dictionary for the word and alexa response
/// This method ensures caching for between session logic
/// The WordOfTheDay and AnotherWord strategies implement this abstract class with different responses and word retrival logic
/// </summary>
/// <param name="alexaRequest"></param>
/// <returns></returns>
public AlexaResponse HandleAlexaRequest(AlexaRequestPayload alexaRequest)
{
// initialize variables used in case of retry
Word word = null; // what word will we get - should never be null
int retryCounter = 0;
Dictionary <WordEnum, string> wordResponseDictionary = null; // this method must return populated dictionary
string wordResponse = null;
// get the word
// get the response dictionary from the word
// handle retry errors - get another word from the word service if invalid response dictionary
try
{
// repeat api call and parse
while (wordResponse == null)
{
// Get the word - implemented in base class
if (retryCounter == 0)
{
word = GetWord();
}
// Get random word - there was an issue with the first word
else
{
word = _wordService.GetRandomWord();
}
try
{
wordResponseDictionary = _dictionaryService.GetWordDictionaryFromString(word.WordName);
}
catch (Exception exception)
{
return(new AlexaResponse("Unable to build response dictionary for the word: " + word + " " + exception.Message));
}
wordResponse = wordResponseDictionary[WordEnum.Word];
retryCounter += 1;
}
AlexaResponse alexaResponse = BuildAlexaResponse(alexaRequest, wordResponseDictionary);
// assign word to request for caching the request between intents
alexaRequest.Session.Attributes = new AlexaRequestPayload.SessionCustomAttributes();
alexaRequest.Session.Attributes.LastWord = word.WordName; // use the word from the db as it is saved in intent slots
alexaRequest.Session.Attributes.LastWordDefinition = wordResponseDictionary[WordEnum.WordDefinition];
// cache the request and its above added session attributes
_cacheService.CacheAlexaRequest(alexaRequest);
return(alexaResponse);
}
catch (Exception exception)
{
// todo - log the exception
return(new AlexaWordErrorResponse().GenerateCustomError());
}
}