{-# LANGUAGE OverloadedStrings #-}

--------------------------------------------------------------------------------
-- | General commands

module XMonad.Internal.Command.Desktop
  ( myTerm
  , playSound

  -- commands
  , runTerm
  , runTMux
  , runCalc
  , runBrowser
  , runEditor
  , runFileManager
  , runTogglePlay
  , runPrevTrack
  , runNextTrack
  , runStopPlay
  , runVolumeDown
  , runVolumeUp
  , runVolumeMute
  , runToggleBluetooth
  , runToggleEthernet
  , runRestart
  , runRecompile
  , runAreaCapture
  , runScreenCapture
  , runDesktopCapture
  , runCaptureBrowser
  , runNotificationClose
  , runNotificationCloseAll
  , runNotificationHistory
  , runNotificationContext

  -- daemons
  , runNetAppDaemon

  -- packages
  , networkManagerPkgs
  ) where

import           Control.Monad               (void)
import           Control.Monad.IO.Class

import           Data.Internal.DBus
import           Data.Internal.Dependency

import           DBus

import           RIO.FilePath
import qualified RIO.Text                    as T

import           System.Directory
import           System.Environment
import           System.Posix.User

import           XMonad                      (asks)
import           XMonad.Actions.Volume
import           XMonad.Core                 hiding (spawn)
import           XMonad.Internal.DBus.Common
import           XMonad.Internal.Notify
import           XMonad.Internal.Process
import           XMonad.Internal.Shell
import           XMonad.Operations

--------------------------------------------------------------------------------
-- | My Executables

myTerm :: FilePath
myTerm = "urxvt"

myCalc :: FilePath
myCalc = "bc"

myBrowser :: FilePath
myBrowser = "brave"

myEditor :: FilePath
myEditor = "emacsclient"

myEditorServer :: FilePath
myEditorServer = "emacs"

myMultimediaCtl :: FilePath
myMultimediaCtl = "playerctl"

myBluetooth :: FilePath
myBluetooth = "bluetoothctl"

myCapture :: FilePath
myCapture = "flameshot"

myImageBrowser :: FilePath
myImageBrowser = "feh"

myNotificationCtrl :: FilePath
myNotificationCtrl = "dunstctl"

--------------------------------------------------------------------------------
-- | Packages

myTermPkgs :: [Fulfillment]
myTermPkgs = [ Package Official "rxvt-unicode"
             , Package Official "urxvt-perls"
             ]

myEditorPkgs :: [Fulfillment]
myEditorPkgs = [Package Official "emacs-nativecomp"]

notifyPkgs :: [Fulfillment]
notifyPkgs = [Package Official "dunst"]

bluetoothPkgs :: [Fulfillment]
bluetoothPkgs = [Package Official "bluez-utils"]

networkManagerPkgs :: [Fulfillment]
networkManagerPkgs = [Package Official "networkmanager"]

--------------------------------------------------------------------------------
-- | Misc constants

volumeChangeSound :: FilePath
volumeChangeSound = "smb_fireball.wav"

--------------------------------------------------------------------------------
-- | Some nice apps

runTerm :: SometimesX
runTerm = sometimesExe "terminal" "urxvt" myTermPkgs True myTerm

runTMux :: SometimesX
runTMux = sometimesIO_ "terminal multiplexer" "tmux" deps act
  where
    deps = listToAnds (socketExists "tmux" [] socketName)
      $ fmap (sysExe myTermPkgs) [myTerm, "tmux", "bash"]
    act = spawn
      $ T.unpack
      $ fmtCmd "tmux" ["has-session"]
      #!&& fmtCmd myTerm ["-e", "bash", "-c", singleQuote c]
      #!|| fmtNotifyCmd defNoteError { body = Just $ Text msg }
    c = "exec tmux attach-session -d"
    msg = "could not connect to tmux session"
    socketName = do
      u <- getEffectiveUserID
      t <- getTemporaryDirectory
      return $ t </> "tmux-" ++ show u </> "default"

runCalc :: SometimesX
runCalc = sometimesIO_ "calculator" "bc" deps act
  where
    deps = toAnd_ (sysExe myTermPkgs myTerm) (sysExe [Package Official "bc"] myCalc)
    act = spawnCmd myTerm ["-e", T.pack myCalc, "-l"]

runBrowser :: SometimesX
runBrowser = sometimesExe "web browser" "brave" [Package AUR "brave-bin"]
  False myBrowser

runEditor :: SometimesX
runEditor = sometimesIO_ "text editor" "emacs" tree cmd
  where
    cmd = spawnCmd myEditor
      ["-c", "-e", doubleQuote "(select-frame-set-input-focus (selected-frame))"]
    -- NOTE 1: we could test if the emacs socket exists, but it won't come up
    -- before xmonad starts, so just check to see if the process has started
    tree = toAnd_ (sysExe myEditorPkgs myEditor) $ process [] $ T.pack myEditorServer

runFileManager :: SometimesX
runFileManager = sometimesExe "file browser" "pcmanfm" [Package Official "pcmanfm"]
  True "pcmanfm"

--------------------------------------------------------------------------------
-- | Multimedia Commands

runMultimediaIfInstalled :: T.Text -> T.Text -> SometimesX
runMultimediaIfInstalled n cmd = sometimesExeArgs (T.append n " multimedia control")
  "playerctl" [Package Official "playerctl"] True myMultimediaCtl [cmd]

runTogglePlay :: SometimesX
runTogglePlay = runMultimediaIfInstalled "play/pause" "play-pause"

runPrevTrack :: SometimesX
runPrevTrack = runMultimediaIfInstalled "previous track" "previous"

runNextTrack :: SometimesX
runNextTrack = runMultimediaIfInstalled "next track" "next"

runStopPlay :: SometimesX
runStopPlay = runMultimediaIfInstalled "stop playback" "stop"

--------------------------------------------------------------------------------
-- | Volume Commands

soundDir :: FilePath
soundDir = "sound"

playSound :: MonadIO m => FilePath -> m ()
playSound file = do
  -- manually look up directories to avoid the X monad
  p <- io $ (</> soundDir </> file) . cfgDir <$> getDirectories
  -- paplay seems to have less latency than aplay
  spawnCmd "paplay" [T.pack p]

featureSound :: T.Text -> FilePath -> X () -> X () -> SometimesX
featureSound n file pre post =
  sometimesIO_ (T.unwords ["volume", n, " control"]) "paplay" tree
  $ pre >> playSound file >> post
  where
    -- ASSUME pulseaudio pulls in libpulse as a dep; pulseaudio itself is needed
    -- to play sound (duh) but libpulse is the package with the paplay binary
    tree = Only_ $ sysExe [Package Official "pulseaudio"] "paplay"

runVolumeDown :: SometimesX
runVolumeDown = featureSound "up" volumeChangeSound (return ()) $ void (lowerVolume 2)

runVolumeUp :: SometimesX
runVolumeUp = featureSound "down" volumeChangeSound (return ()) $ void (raiseVolume 2)

runVolumeMute :: SometimesX
runVolumeMute = featureSound "mute" volumeChangeSound (void toggleMute) $ return ()

--------------------------------------------------------------------------------
-- | Notification control

runNotificationCmd :: T.Text -> T.Text -> Maybe SesClient -> SometimesX
runNotificationCmd n arg cl =
  sometimesDBus cl (T.unwords [n, "control"]) "dunstctl" tree cmd
  where
    cmd _ = spawnCmd myNotificationCtrl [arg]
    tree = toAnd_ (DBusIO $ sysExe notifyPkgs myNotificationCtrl)
      $ Endpoint [] notifyBus notifyPath (interfaceName_ "org.dunstproject.cmd0")
      $ Method_ $ memberName_ "NotificationAction"

runNotificationClose :: Maybe SesClient -> SometimesX
runNotificationClose = runNotificationCmd "close notification" "close"

runNotificationCloseAll :: Maybe SesClient -> SometimesX
runNotificationCloseAll =
  runNotificationCmd "close all notifications" "close-all"

runNotificationHistory :: Maybe SesClient -> SometimesX
runNotificationHistory =
  runNotificationCmd "see notification history" "history-pop"

runNotificationContext :: Maybe SesClient -> SometimesX
runNotificationContext =
  runNotificationCmd "open notification context" "context"

--------------------------------------------------------------------------------
-- | System commands

-- this is required for some vpn's to work properly with network-manager
runNetAppDaemon :: Maybe SysClient -> Sometimes (IO ProcessHandle)
runNetAppDaemon cl = Sometimes "network applet" xpfVPN
  [Subfeature (DBusRoot_ cmd tree cl) "NM-applet"]
  where
    tree = toAnd_ app $ Bus networkManagerPkgs networkManagerBus
    app = DBusIO $ sysExe [Package Official "network-manager-applet"] "nm-applet"
    -- cmd _ = snd <$> spawnPipe "nm-applet"
    cmd _ = spawnProcess "nm-applet" []

runToggleBluetooth :: Maybe SysClient -> SometimesX
runToggleBluetooth cl = Sometimes "bluetooth toggle" xpfBluetooth
  [Subfeature (DBusRoot_ cmd tree cl) "bluetoothctl"]
  where
    tree = And_ (Only_ $ DBusIO $ sysExe bluetoothPkgs myBluetooth) (Only_ $ Bus [] btBus)
    cmd _ = spawn
      $ T.unpack
      $ T.unwords [T.pack myBluetooth, "show | grep -q \"Powered: no\""]
      #!&& "a=on"
      #!|| "a=off"
      #!>> fmtCmd myBluetooth ["power", "$a", ">", "/dev/null"]
      #!&& fmtNotifyCmd defNoteInfo { body = Just $ Text "bluetooth powered $a" }

runToggleEthernet :: SometimesX
runToggleEthernet = Sometimes "ethernet toggle" xpfEthernet
  [Subfeature root "nmcli"]
  where
    root = IORoot (spawn . T.unpack . cmd) $ And1 (Only readEthernet) $ Only_
      $ sysExe networkManagerPkgs "nmcli"
    -- TODO make this less noisy
    cmd iface =
      T.unwords ["nmcli -g GENERAL.STATE device show", iface, "| grep -q disconnected"]
      #!&& "a=connect"
      #!|| "a=disconnect"
      #!>> fmtCmd "nmcli" ["device", "$a", iface]
      #!&& fmtNotifyCmd defNoteInfo { body = Just $ Text "ethernet \"$a\"ed"  }

--------------------------------------------------------------------------------
-- | Configuration commands

runRestart :: X ()
runRestart = restart "xmonad" True

-- TODO only recompile the VM binary if we have virtualbox enabled
runRecompile :: X ()
runRecompile = do
  -- assume that the conf directory contains a valid stack project
  confDir <- asks (cfgDir . directories)
  spawnAt confDir
    $ T.unpack
    $ fmtCmd "stack" ["install"]
    #!&& fmtNotifyCmd defNoteInfo { body = Just $ Text "compilation succeeded" }
    #!|| fmtNotifyCmd defNoteError { body = Just $ Text "compilation failed" }

--------------------------------------------------------------------------------
-- | Screen capture commands

getCaptureDir :: IO FilePath
getCaptureDir = do
  e <- lookupEnv "XDG_DATA_HOME"
  parent <- case e of
    Nothing -> fallback
    Just path
      | isRelative path -> fallback
      | otherwise -> return path
  let fullpath = parent </> "screenshots"
  createDirectoryIfMissing True fullpath
  return fullpath
  where
    fallback = (</> ".local/share") <$> getHomeDirectory

runFlameshot :: T.Text -> T.Text -> Maybe SesClient -> SometimesX
runFlameshot n mode cl = sometimesDBus cl n (T.pack myCapture) tree cmd
  where
    cmd _ = spawnCmd myCapture [mode]
    tree = toAnd_ (DBusIO $ sysExe [Package Official "flameshot"] myCapture)
      $ Bus [] $ busName_ "org.flameshot.Flameshot"

-- TODO this will steal focus from the current window (and puts it
-- in the root window?) ...need to fix
runAreaCapture :: Maybe SesClient -> SometimesX
runAreaCapture = runFlameshot "screen area capture" "gui"

-- myWindowCap = "screencap -w" --external script

runDesktopCapture :: Maybe SesClient -> SometimesX
runDesktopCapture = runFlameshot "fullscreen capture" "full"

runScreenCapture :: Maybe SesClient -> SometimesX
runScreenCapture = runFlameshot "screen capture" "screen"

runCaptureBrowser :: SometimesX
runCaptureBrowser = sometimesIO_ "screen capture browser" "feh"
  (Only_ $ sysExe [Package Official "feh"] myImageBrowser) $ do
  dir <- io getCaptureDir
  spawnCmd myImageBrowser [T.pack dir]