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|
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE LambdaCase #-}
-- | spawns a few processes that serve the que.run website
--
-- : exe que-website
--
-- : dep async
-- : dep config-ini
-- : dep process
-- : dep protolude
-- : dep req
module Run.Que.Website
( main
)
where
import qualified Control.Concurrent.Async as Async
import Com.Simatime.Alpha
import qualified Data.ByteString.Char8 as BS
import qualified Data.Ini.Config as Config
import qualified Data.Text as Text
import Data.Text.Encoding ( encodeUtf8 )
import qualified Data.Text.IO as Text
import Network.HTTP.Req
import Prelude ( error )
import qualified System.Directory as Directory
import System.Environment as Environment
import qualified System.Exit as Exit
import System.FilePath ( (</>) )
import qualified System.Process as Process
main :: IO ()
main = do
(src, ns) <- Environment.getArgs >>= \case
[src] -> return (src, "_") -- default to _ ns which is special
[src, ns] -> return (src, ns)
_ -> Exit.die "usage: que-website <srcdir> [namespace]"
home <- Directory.getHomeDirectory
conf <- Text.readFile <| home </> ".config" </> "que.conf"
let (Auth _ key) =
either needConf identity
<| Config.parseIniFile conf
<| auth
<| Text.pack ns
putStrLn $ "serving " ++ src ++ " at " ++ ns
run key (Text.pack ns) $ Sources { index = src </> "index.md"
, client = src </> "client.py"
, quescripts = src </> "quescripts.md"
, style = src </> "style.css"
, apidocs = src </> "apidocs.md"
, tutorial = src </> "tutorial.md"
}
needConf :: error
needConf = error "you need a ~/.config/que.conf"
data Sources = Sources
{ index :: FilePath
, quescripts :: FilePath
, client :: FilePath
, style :: FilePath
, tutorial :: FilePath
, apidocs :: FilePath
}
type Namespace = Text
type Key = Text
data Auth = Auth Namespace Key
auth :: Text -> Config.IniParser Auth
auth ns = Config.section ns $ do
key <- Config.field "key"
return <| Auth ns key
run :: Key -> Text -> Sources -> IO ()
run key ns Sources {..} = Async.runConcurrently actions >> return ()
where
actions = traverse
Async.Concurrently
[ forever <| toHtml index >>= serve key ns "index"
, forever <| toHtml quescripts >>= serve key ns "quescripts"
, forever <| BS.readFile client >>= serve key ns "client"
, forever <| toHtml tutorial >>= serve key ns "tutorial"
, forever <| toHtml apidocs >>= serve key ns "apidocs"
]
toHtml :: FilePath -> IO ByteString
toHtml md =
BS.pack
<$> Process.readProcess
"pandoc"
[ "--self-contained"
, "--css"
, style
, "-i"
, md
, "--from"
, "markdown"
, "--to"
, "html"
]
[]
-- TODO: recover from 502 errors
serve :: Key -> Namespace -> Text -> ByteString -> IO ()
serve key ns path content = runReq defaultHttpConfig $ do
let options =
header "Authorization" (encodeUtf8 key) <> responseTimeout maxBound
_ <- req POST
(http "que.run" /: ns /: path)
(ReqBodyBs content)
ignoreResponse
options
liftIO $ return ()
|
