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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 as T
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
(putLog0, takeLog) <- newChan
let
putLog1 = if cLogTime then (putLog0 =<<) . prefixTimestamp else putLog0
putLog2 = putLog1 . showUnprintable
putLog3 = if logToTTY then putLog2 else putLog2 . stripSGR
putLog = putLog3
_ <-
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.flameshot.Flameshot"))
, Variant (ValueAtom (AtomText _old_owner))
, Variant (ValueAtom (AtomText new_owner))
]
}
->
if new_owner /= ""
then daemonJoin
else daemonPart
Signal
{ signalPath = "/"
, signalInterface = "org.flameshot.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
copyToClipboard mimetype input =
P.runAway "xclip" ["-selection", "clipboard", "-t", mimetype, "-i"]
Nothing Nothing input Nothing $
logger putLog "xclip"
runDaemon =
P.run "flameshot" [] Nothing Nothing "" Nothing $
logger putLog "daemon" <>
mempty
{ P.onError = \_ _ -> daemonStop
, P.onExit = \_ _ -> daemonStop
}
runLogPrinter =
forever $ takeLog >>= T.hPutStrLn stderr . pp
runWindowWaiter name onQuit = do
P.run "xwaitforwindow" ["-name", name] Nothing Nothing "" Nothing $
logger putLog ("xwaitforwindow(name=" <> T.pack (show name) <> ")") <>
mempty
{ P.onError = \_ _ -> onQuit
, P.onExit = \_ _ -> onQuit
}
waitForWindow name = do
(waiterStop, awaitWaiterStop) <- newSemaphore
withThread_ (runWindowWaiter name waiterStop) awaitWaiterStop
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.flameshot.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
-- sleep in order give the upload window a chance to appear
threadDelay cTimeout
waitForWindow "Upload to Imgur"
killThread daemonThread
withTimeout_ cTimeout awaitDaemonPart "daemon" "part" (return ())
withTimeout_ cTimeout awaitDaemonStop "daemon" "stop" (return ())
|
