/// <summary>
/// A Lambda function to respond to HTTP Get methods from API Gateway
/// </summary>
/// <param name="request"></param>
/// <returns>The list of blogs</returns>
public async Task <APIGatewayProxyResponse> Validate(APIGatewayProxyRequest request, ILambdaContext context)
{
context.Logger.LogLine("Received:" + request.Body);
if (request.IsSlackChallengeRequest())
{
var challengeRequest = request.Body.As <ChallengeRequest>();
return(Respond(challengeRequest.Challenge, context));
}
var slackEvent = request.Body.As <SlackEventAPIPayload>();
if (slackEvent == null || slackEvent.Event == null)
{
return(Respond("IGNORED", context));
}
if (string.IsNullOrEmpty(slackEvent.Event.Text))
{
return(Respond("IGNORED", context));
}
if (slackEvent.Event != null && slackEvent.Event.Text != null && !string.IsNullOrEmpty(slackEvent.Event.Bot_Id))
{
return(Respond("BOT", context));
}
if (!string.IsNullOrEmpty(slackEvent.Event.SubType) && slackEvent.Event.SubType == "bot_message")
{
return(Respond("BOT", context));
}
var urls = RegexHelper.FindURl(slackEvent.Event.Text);
if (urls.Any())
{
var firstUrl = urls.First();
var cleansedUrl = UrlCleaner.CleanForTrackingQueryParams(firstUrl.Value);
cleansedUrl = cleansedUrl.TrimEnd('/');
var searchResults = await _slackClient.SearchMessagesAsync(cleansedUrl, SearchSort.timestamp, count : 1, direction : SearchSortDirection.asc);
if (searchResults != null && searchResults.messages.matches.Any())
{
context.Logger.LogLine(JsonConvert.SerializeObject(searchResults.messages.matches));
var r = searchResults.messages.matches.FirstOrDefault();
if (r == null)
{
return(Respond($"NO-URL-IN-MSG", context));
}
if (r.ts == slackEvent.Event.Ts)
{
return(Respond("NEW", context));
}
if (r.user == slackEvent.Event.User)
{
return(Respond("OLD-BUT-SAME-USER-SO-IGNORING", context));
}
var reactionResponse = await _slackClient.AddReactions(slackEvent.GetChannel(), slackEvent.Event.Ts);
var alreadyReacted = reactionResponse.Any(AlreadyReactedTo);
if (!alreadyReacted)
{
var message = $"postet av @{r.username} for {TimeSpanExtensions.Ago(r.ts)} siden.";
var response = await _slackClient.SendMessage(slackEvent.GetChannel(), message, slackEvent.Event.Ts, r.permalink);
var body = await response.Content.ReadAsStringAsync();
context.Logger.LogLine("Sent message. Response:" + JsonConvert.SerializeObject(body));
var reactionResponseBody = await reactionResponse.First().Content.ReadAsStringAsync();
context.Logger.LogLine("Sent reaction. Response:" + JsonConvert.SerializeObject(reactionResponseBody));
return(Respond($"OLD", context));
}
return(Respond($"ALREADY-OLDED", context));
}
}
return(Respond($"NO-URL-IN-MSG", context));
}