private static async Task SavePollResult(Container pollContainer, PollResultDocument pollResult)
{
if (pollResult.ETag == null)
{
await pollContainer.CreateItemAsync(pollResult);
}
else
{
await pollContainer.ReplaceItemAsync(pollResult, pollResult.Id, new PartitionKey(pollResult.PartitionKey), new ItemRequestOptions { IfMatchEtag = pollResult.ETag });
}
}
private static PollResultDocument CalculateUpdatedResults(PollResultDocument pollResult, PollResponseDocument pollResponse)
{
pollResult = pollResult ?? new PollResultDocument(pollResponse.PartitionKey);
var pollAnswerId = pollResponse.PollAnswerId;
if (pollResult.PossibleAnswers.ContainsKey(pollResponse.PollAnswerId))
{
pollResult.PossibleAnswers[pollAnswerId] = pollResult.PossibleAnswers[pollAnswerId] + 1;
}
else
{
pollResult.PossibleAnswers.Add(pollAnswerId, 1);
}
return(pollResult);
}
public async Task <Poll> GetPoll(string id)
{
var container = await Initialize();
var pollDocumentId = new DocumentId(id, id, nameof(PollDocument));
PollDocument pollDocument = null;
try
{
pollDocument = (await container.ReadItemAsync <PollDocument>(pollDocumentId.Id, new PartitionKey(pollDocumentId.PartitionKey))).Resource;
}
catch (CosmosException ex) when(ex.StatusCode == HttpStatusCode.NotFound)
{
return(null);
}
var pollResultDocumentId = new DocumentId(id, id, nameof(PollResultDocument));
PollResultDocument pollResultDocument = null;
try
{
pollResultDocument = (await container.ReadItemAsync <PollResultDocument>(pollResultDocumentId.Id, new PartitionKey(pollResultDocumentId.PartitionKey))).Resource;
}
catch (CosmosException ex) when(ex.StatusCode == HttpStatusCode.NotFound)
{
}
var pollAnswerResponses = pollResultDocument?.PossibleAnswers;
return(new Poll
{
Question = pollDocument.Question,
PossibleAnswers = pollDocument.PossibleAnswers.Select(answer => {
var responseCount = 0;
if (pollAnswerResponses?.ContainsKey(answer.Id) == true)
{
responseCount = pollAnswerResponses[answer.Id];
}
return new PollAnswer(answer.Id, answer.Answer, responseCount);
}).ToList()
});
}
