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{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MultiWayIf #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Main (main) where
import Blessings.Text
import Control.Concurrent.Extended
import Control.Exception
import Control.Monad
import Data.Int (Int32)
import qualified Data.Text.IO as T
import Data.Maybe (fromMaybe)
import Data.Word (Word32)
import DBus
import DBus.Client
import DBus.Internal.Message
import DBus.Internal.Types
import Flameshot.Internal
import qualified Flameshot.Internal.Process as P
--import System.Exit
import System.Environment
import System.IO
import System.Random
import Text.Read (readMaybe)
main :: IO ()
main =
bracket connectSession disconnect app
app :: Client -> IO ()
app client = do
(captureFinish, awaitCaptureFinish) <- newRelay
(daemonJoin, awaitDaemonJoin) <- newSemaphore
(daemonPart, awaitDaemonPart) <- newSemaphore
(daemonStop, awaitDaemonStop) <- newSemaphore
cGuiPath <- getEnv "FLAMESHOT_CAPTURE_PATH"
let
cLogTime = True
cLogHandle = stderr
cTimeout <-
let
def = 100
err = error $ "failed to read integer from " <> var
var = "FLAMESHOT_ONCE_TIMEOUT"
in
(1000*) . maybe def (fromMaybe err . readMaybe) <$> lookupEnv var
hSetBuffering cLogHandle LineBuffering
logToTTY <- hIsTerminalDevice cLogHandle
(putLog, takeLog0) <- newChan
let
takeLog1 = if cLogTime then takeLog0 >>= prefixTimestamp else takeLog0
takeLog2 = showUnprintable <$> takeLog1
takeLog3 = if logToTTY then takeLog2 else stripSGR <$> takeLog2
takeLog = takeLog3
_ <-
addMatch client matchAny $ \case
Signal
{ signalPath = "/org/freedesktop/DBus"
, signalInterface = "org.freedesktop.DBus"
, signalMember = "NameOwnerChanged"
, signalSender = Just "org.freedesktop.DBus"
, signalDestination = Nothing
, signalBody =
[ Variant (ValueAtom (AtomText "org.dharkael.Flameshot"))
, Variant (ValueAtom (AtomText _old_owner))
, Variant (ValueAtom (AtomText new_owner))
]
}
->
if new_owner /= ""
then daemonJoin
else daemonPart
Signal
{ signalPath = "/"
, signalInterface = "org.dharkael.Flameshot"
, signalDestination = Nothing
, signalBody = Variant (ValueAtom (AtomWord32 _callId)) : rest
, ..
}
->
case signalMember of
"captureTaken" -> do
captureFinish (Just rawImage)
"captureFailed" -> do
captureFinish Nothing
_other -> do
captureFinish Nothing
where
[Variant (ValueBytes rawImage)] = rest
_sig ->
return ()
let
runDaemon =
P.run "flameshot" [] Nothing Nothing "" Nothing P.Callbacks
{ P.onOutLine = \_ s -> putLog $ "daemon stdout: " <> Plain s
, P.onErrLine = \_ s -> putLog $ "daemon stderr: " <> red (Plain s)
, P.onError = \_ _err -> do
daemonStop
, P.onExit = \_ _status -> do
daemonStop
, P.onStart = \_ -> return ()
}
runLogPrinter =
forever $ takeLog >>= T.hPutStrLn stderr . pp
let
withTimeout time f s v io =
timeout time f >>= \case
Right x ->
io x
Left _time ->
putLog (s <> " " <> v <> " timeout after " <> blessTime time)
withTimeout_ time f s v io =
withTimeout time f s v (const io)
withThread_ runLogPrinter $ do
withThread runDaemon $ \daemonThread -> do
withTimeout_ cTimeout awaitDaemonJoin "daemon" "join" $ do
callId <- getStdRandom random :: IO Word32
call client (methodCall "/" "" "graphicCapture")
{ methodCallDestination = Just "org.dharkael.Flameshot"
, methodCallInterface = Nothing
, methodCallBody =
[ toVariant cGuiPath
, toVariant (0 :: Int32)
, toVariant callId
]
} >>= \case
Right MethodReturn{} ->
awaitCaptureFinish >>= mapM_ (copyToClipboard "image/png")
Left err ->
putLog $ "capture failed: " <> blessMethodError err
killThread daemonThread
withTimeout_ cTimeout awaitDaemonPart "daemon" "part" (return ())
withTimeout_ cTimeout awaitDaemonStop "daemon" "stop" (return ())
|
