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45 lines
1.3 KiB
Haskell
45 lines
1.3 KiB
Haskell
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{-# LANGUAGE BlockArguments #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE TypeApplications #-}
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module Main where
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import qualified Control.Concurrent as Concurrent
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import qualified Control.Concurrent.Chan as Chan
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import Control.Monad
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import qualified Data.Binary.Builder as Builder
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import qualified Data.Text as Text
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import qualified Network.HTTP.Types as HTTP
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import qualified Network.Wai as Wai
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import qualified Network.Wai.EventSource as Wai
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import qualified Network.Wai.Handler.Warp as Warp
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import Okapi.App
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import Okapi.Response
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import qualified Web.HttpApiData as Web
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ticker :: Chan.Chan Wai.ServerEvent -> Node '[]
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ticker source =
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choice
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[ lit "connect" $ events source
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]
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tick source = do
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let event =
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Wai.ServerEvent
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{ Wai.eventName = Nothing
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, Wai.eventId = Nothing
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, Wai.eventData = [Builder.putStringUtf8 "tick"]
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}
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forever do
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Concurrent.threadDelay (1 * (10 ^ 6))
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print "Sending"
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Chan.writeChan source event
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main = do
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source <- Chan.newChan
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Concurrent.forkIO $ tick source
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Warp.run 8003
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. withDefault (ticker source)
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$ \_ resp -> resp $ Wai.responseLBS HTTP.status404 [] "Not Found..."
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