public async Task <QueryResponse <GetSuggestionResponse> > Handle(GetSuggestionRequest query, CancellationToken cancellationToken)
{
try
{
if (!Validate(query))
{
return(new QueryResponse <GetSuggestionResponse>(MessageType.Validation, new QueryResponseError("Validate", Errors.First())));
}
string cacheKey = GetCacheKey(query);
return(await _cache.GetOrCreateAsync(cacheKey, (entry) =>
{
entry.AbsoluteExpirationRelativeToNow = TimeSpan.FromDays(365);
entry.SlidingExpiration = TimeSpan.FromDays(365);
return ExecuteQuery(query);
}));
}
catch
{
// Default behavior no suggestion
return(new QueryResponse <GetSuggestionResponse>(new GetSuggestionResponse()));
}
}
private bool Validate(GetSuggestionRequest query)
{
if (query == null)
{
Errors.Add("Error: Query parameter is null!");
}
return(Errors.Count == 0);
}
private async Task <QueryResponse <GetSuggestionResponse> > ExecuteQuery(GetSuggestionRequest query)
{
if (!string.IsNullOrEmpty(query.CityName))
{
var apiResult = await _googlePlacesApiService.GetByPlacesSuggestionAsync(query.CityName);
if (apiResult.IsSuccessful)
{
return(new QueryResponse <GetSuggestionResponse>(new GetSuggestionResponse()
{
SuggestionList = apiResult.Response.predictions
.Select(p => p.structured_formatting.main_text)
.Distinct()
.ToList()
}));
}
}
// Default behavior no suggestion
return(new QueryResponse <GetSuggestionResponse>(new GetSuggestionResponse()));
}