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|
{-# LANGUAGE ApplicativeDo #-}
{-# LANGUAGE RecordWildCards #-}
module Main
( main
) where
import Data.Version (showVersion)
import Paths_git_auto_acp (version)
import Control.Concurrent
import Control.Monad
import Data.Foldable
import Data.Maybe
import qualified Data.Set as S
import Options.Applicative
import System.Clock
import System.Environment
import System.Exit
import System.FSNotify
import System.FilePath.Glob
import System.IO
import System.Process
data Watch = Watch
{ watchPath :: FilePath
, watchWithRemoval :: Bool
} deriving (Show, Eq, Ord)
data Opts = Opts
{ optAddCommitDelay :: Float
, optPushDelay :: Maybe Float
, optWatches :: [Watch]
, optMsg :: String
} deriving (Show)
opts :: Parser Opts
opts = do
optAddCommitDelay <-
option auto
$ short 'd'
<> long "commit-delay"
<> help "debuounce delay for adding and commiting new changes"
<> value 5
<> showDefault
optPushDelay <-
asum
[ flag' Nothing
$ short 'L' <> long "local" <> help "only work locally, do not push"
, fmap Just . option auto
$ short 'D'
<> long "push-delay"
<> help "push changes upstream with this debuounce delay"
<> value 60
<> showDefault
]
optWatches <-
some
$ asum
[ fmap (`Watch` False) . strOption
$ short 'a'
<> long "add"
<> metavar "PATH"
<> help "paths to auto-add"
, fmap (`Watch` False) . strOption
$ short 'A'
<> long "add-all"
<> metavar "PATH"
<> help "like `--add' but auto-adds file removals"
]
optMsg <-
strOption
$ short 'm'
<> long "message"
<> metavar "MSG"
<> help "commit message for auto-commits"
<> value "update to filesystem state"
<> showDefault
pure Opts {..}
data Event
= AddBounce
| PushBounce
| Change Watch
| Finished
deriving (Show, Eq, Ord)
delaySec :: Float -> IO ()
delaySec = threadDelay . round . (1000000 *)
intervalPassed i a b =
1000000000 * i <= fromIntegral (toNanoSecs $ diffTimeSpec a b)
runCmd prog args = do
st <- rawSystem prog args
unless (st == ExitSuccess) . hPutStrLn stderr
$ prog ++ " failed with args " ++ show args
main :: IO ()
main = do
o <-
customExecParser (prefs $ showHelpOnEmpty)
$ info
(opts <**> helper <**> simpleVersioner (showVersion version))
(fullDesc
<> header "git-auto-acp -- automatically add-commit-push files"
<> (footer
"This program is free software; see LICENSE file for details."))
git <- fromMaybe "git" <$> lookupEnv "AUTO_ACP_GIT"
withManager $ \fsmgr -> do
chan <- newChan
done <- newEmptyMVar
-- start some watchers
for_ (optWatches o) $ \w@(Watch path _) ->
watchTree fsmgr path (const True) . const $ writeChan chan (Change w)
-- start the event crunching thread
forkIO
$ let loop ws lastAdd addsPending lastPush pushesPending = do
ev <- readChan chan
now <- getTime Monotonic
case ev of
Finished -> pure ()
Change w -> do
forkIO
$ delaySec (optAddCommitDelay o) >> writeChan chan AddBounce
let ws' = S.insert w ws
case optPushDelay o of
Nothing ->
loop ws' lastAdd (succ addsPending) lastPush pushesPending
Just pd -> do
forkIO $ delaySec pd >> writeChan chan PushBounce
loop
ws'
lastAdd
(succ addsPending)
lastPush
(succ pushesPending)
AddBounce
| not (S.null ws)
, addsPending == 1
|| intervalPassed (optAddCommitDelay o) now lastAdd -> do
for_ ws $ \(Watch p all) -> do
if all
then runCmd git ["add", p]
else runCmd git ["add", "--all", p]
runCmd git ["commit", "--message", optMsg o]
loop S.empty now (pred addsPending) lastPush pushesPending
| otherwise ->
loop
S.empty
lastAdd
(pred addsPending)
lastPush
pushesPending
PushBounce
| Just pd <- optPushDelay o
, pushesPending == 1 || intervalPassed pd now lastPush -> do
runCmd git ["push"]
loop ws lastAdd addsPending now (pred pushesPending)
| otherwise ->
loop ws lastAdd addsPending lastPush (pred pushesPending)
in loop S.empty 0 0 0 0
-- wait for the finish, then terminate
takeMVar done
|
