public async Task <IActionResult> OnChannelPointsRedeemed([HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = "twitch/points/OnChannelPointsRedeemed")] HttpRequest req,
[SignalR(HubName = "channelPoints")] IAsyncCollector <SignalRMessage> obsMessages
)
{
var requestBody = await new StreamReader(req.Body).ReadToEndAsync();
req.Body.Position = 0;
var message = await _twitchAuthenticator.AuthenticateMessage(req);
if (!message.Success)
{
return(new BadRequestObjectResult(new { Message = "Signature not valid" }));
}
if (req.Headers.ContainsKey("Twitch-Eventsub-Message-Type") && req.Headers["Twitch-Eventsub-Message-Type"] == "webhook_callback_verification")
{
// return challenge value from payload
var jdoc = JsonDocument.Parse(requestBody);
var challenge = jdoc.RootElement.GetProperty("challenge").GetString();
_log.LogInformation($"Returning challenge: {challenge}");
return(new ContentResult()
{
Content = challenge,
ContentType = "text/plain",
StatusCode = 200
});
}
var redemption = JsonSerializer.Deserialize <EventSubscription <ChannelPointsRedeemedEvent> >(message.Value.Message, _ignoreNullJsonOptions);
switch (redemption.Subscription.Type)
{
case "channel.channel_points_custom_reward_redemption.add":
// parse to type
_log.LogInformation($"{redemption.Event.UserName} redeemed {redemption.Event.Reward.Cost} points for {redemption.Event.Reward.Title}");
await obsMessages.AddAsync(new SignalRMessage()
{
Target = "Redeemed", Arguments = new[] { redemption.Event.Reward.Title }
});
break;
default:
_log.LogInformation(redemption.Subscription.Type);
break;
}
return(new OkResult());
}
public async Task <IActionResult> OnStreamStarted([HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = "twitch/status/OnStreamStarted")] HttpRequest req,
[Table("ChannelStatus")] IAsyncCollector <ChannelStatus> table
)
{
var requestBody = await new StreamReader(req.Body).ReadToEndAsync();
req.Body.Position = 0;
var message = await _twitchAuthenticator.AuthenticateMessage(req);
if (!message.Success)
{
return(new BadRequestObjectResult(new { Message = "Signature not valid" }));
}
if (req.Headers.ContainsKey("Twitch-Eventsub-Message-Type") && req.Headers["Twitch-Eventsub-Message-Type"] == "webhook_callback_verification")
{
// return challenge value from payload
var jdoc = JsonDocument.Parse(requestBody);
var challenge = jdoc.RootElement.GetProperty("challenge").GetString();
_log.LogInformation($"Returning challenge: {challenge}");
return(new ContentResult()
{
Content = challenge,
ContentType = "text/plain",
StatusCode = 200
});
}
var eventMessage = JsonSerializer.Deserialize <EventSubscription <StreamStartEvent> >(message.Value.Message, _ignoreNullJsonOptions);
_log.LogInformation($"Received event: {eventMessage.Subscription.Type}");
switch (eventMessage.Subscription.Type)
{
case "stream.online":
await table.AddAsync(new ChannelStatus(eventMessage.Event));
break;
case "stream.offline":
break;
}
return(new OkResult());
}
