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{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE ScopedTypeVariables #-}
module Main where
import Rebase.Prelude
import System.Directory (createDirectoryIfMissing, renameFile)
import System.FilePath (takeFileName, (</>))
import System.FSNotify (Event (..), watchDir, withManager)
import System.Process.Typed (proc, runProcess)
verbose :: Bool
verbose = True
pdfDirectory, seenDir, pdfPrinterExecutable :: FilePath
pdfDirectory = "."
seenDir = pdfDirectory </> "seen"
pdfPrinterExecutable = "PDFtoPrinter.exe"
main :: IO ()
main = do
createDirectoryIfMissing False seenDir
withManager $ \mgr -> do
void $ watchDir mgr pdfDirectory (const True) handleEvent
forever $ threadDelay 1000000
handleEvent :: Event -> IO ()
handleEvent (Added f _) | (".pdf" `isSuffixOf` f) = handleNewPdf f
handleEvent x = when verbose $ print x
handleNewPdf :: FilePath -> IO ()
handleNewPdf f =
-- Note: there is no sense in checking the return result, as PDFtoPrinter.exe
-- returns success even when it fails to parse the PDF.
runProcessVerbose pdfPrinterExecutable [f] >>
moveFileIntoDir f seenDir
runProcessVerbose :: FilePath -> [String] -> IO ExitCode
runProcessVerbose exe args = do
when verbose $ putStrLn $ "+ " ++ exe ++ " " ++ unwords args
runProcess (proc exe args)
moveFileIntoDir :: FilePath -> FilePath -> IO ()
moveFileIntoDir f d = renameFile f $ d </> takeFileName f
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