{ pkgs, ... }:
pkgs.writeHaskellPackage "xmonad-jeschli" {
  executables.xmonad = {
    extra-depends = [
      "containers"
      "extra"
      "unix"
      "X11"
      "xmonad"
      "xmonad-contrib"
      "xmonad-stockholm"
    ];
    text = /* haskell */ ''
{-# LANGUAGE DeriveDataTypeable #-} -- for XS
{-# LANGUAGE FlexibleContexts #-} -- for xmonad'
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE ScopedTypeVariables #-}


module Main where

import Control.Exception
import Control.Monad.Extra (whenJustM)
import Graphics.X11.ExtraTypes.XF86
import Text.Read (readEither)
import XMonad
import System.Environment (getArgs, withArgs, getEnv, getEnvironment, lookupEnv)
import System.Exit (exitFailure)
import System.IO (hPutStrLn, stderr)
import System.Posix.Process (executeFile)
import XMonad.Actions.DynamicWorkspaces ( addWorkspacePrompt, renameWorkspace
                                        , removeEmptyWorkspace)
import XMonad.Actions.GridSelect
import XMonad.Actions.CycleWS (toggleWS)
--import XMonad.Actions.CopyWindow ( copy )
import XMonad.Layout.NoBorders ( smartBorders )
import qualified XMonad.StackSet as W
import Data.Map (Map)
import qualified Data.Map as Map
-- TODO import XMonad.Layout.WorkspaceDir
import XMonad.Hooks.UrgencyHook (SpawnUrgencyHook(..), withUrgencyHook)
-- import XMonad.Layout.Tabbed
--import XMonad.Layout.MouseResizableTile
import XMonad.Layout.Reflect (reflectVert)
import XMonad.Layout.FixedColumn (FixedColumn(..))
import XMonad.Hooks.Place (placeHook, smart)
import XMonad.Hooks.FloatNext (floatNextHook)
import XMonad.Hooks.SetWMName
import XMonad.Actions.PerWorkspaceKeys (chooseAction)
import XMonad.Layout.PerWorkspace (onWorkspace)
--import XMonad.Layout.BinarySpacePartition

--import XMonad.Actions.Submap
import XMonad.Stockholm.Pager
import XMonad.Stockholm.Rhombus
import XMonad.Stockholm.Shutdown


amixerPath :: FilePath
amixerPath = "${pkgs.alsaUtils}/bin/amixer"

urxvtcPath :: FilePath
urxvtcPath = "${pkgs.rxvt_unicode}/bin/urxvtc"

myFont :: String
myFont = "-schumacher-*-*-*-*-*-*-*-*-*-*-*-iso10646-*"

main :: IO ()
main = getArgs >>= \case
    [] -> mainNoArgs
    ["--shutdown"] -> shutdown
    args -> hPutStrLn stderr ("bad arguments: " <> show args) >> exitFailure

mainNoArgs :: IO ()
mainNoArgs = do
    handleShutdownEvent <- newShutdownEventHandler
    xmonad
        -- $ withUrgencyHookC dzenUrgencyHook { args = ["-bg", "magenta", "-fg", "magenta", "-h", "2"], duration = 500000 }
        --                   urgencyConfig { remindWhen = Every 1 }
        -- $ withUrgencyHook borderUrgencyHook "magenta"
        -- $ withUrgencyHookC BorderUrgencyHook { urgencyBorderColor = "magenta" } urgencyConfig { suppressWhen = Never }
        $ withUrgencyHook (SpawnUrgencyHook "echo emit Urgency ")
        $ def
            { terminal          = urxvtcPath
            , modMask           = mod4Mask
            , keys              = myKeys
            , workspaces        = ["comms", "org", "dev"]
            , layoutHook        = smartBorders $ FixedColumn 1 20 80 10 ||| Full
            -- , handleEventHook   = myHandleEventHooks <+> handleTimerEvent
            --, handleEventHook   = handleTimerEvent
            , manageHook        = placeHook (smart (1,0)) <+> floatNextHook
            , startupHook = do
                setWMName "LG3D"
                whenJustM (liftIO (lookupEnv "XMONAD_STARTUP_HOOK"))
                          (\path -> forkFile path [] Nothing)
            , normalBorderColor  = "#1c1c1c"
            , focusedBorderColor = "#f000b0"
            , handleEventHook = handleShutdownEvent
            }


getWorkspaces0 :: IO [String]
getWorkspaces0 =
    try (getEnv "XMONAD_WORKSPACES0_FILE") >>= \case
      Left e -> warn (displaySomeException e)
      Right p -> try (readFile p) >>= \case
        Left e -> warn (displaySomeException e)
        Right x -> case readEither x of
          Left e -> warn e
          Right y -> return y
  where
    warn msg = hPutStrLn stderr ("getWorkspaces0: " ++ msg) >> return []

displaySomeException :: SomeException -> String
displaySomeException = displayException


forkFile :: FilePath -> [String] -> Maybe [(String, String)] -> X ()
forkFile path args env =
    xfork (executeFile path False args env) >> return ()

spawnRootTerm :: X ()
spawnRootTerm =
    forkFile
        urxvtcPath
        ["-name", "root-urxvt", "-e", "/run/wrappers/bin/su", "-"]
        Nothing

spawnTermAt :: String -> X ()
spawnTermAt ws = do
    env <- liftIO getEnvironment
    let env' = ("XMONAD_SPAWN_WORKSPACE", ws) : env
    forkFile urxvtcPath [] (Just env')


myKeys :: XConfig Layout -> Map (KeyMask, KeySym) (X ())
myKeys conf = Map.fromList $
    [ ((_4  , xK_Escape ), forkFile "/run/wrappers/bin/slock" [] Nothing)
    , ((_4S , xK_c      ), kill)

   , ((_4  , xK_p      ), spawn "${pkgs.writeDash "my-dmenu" ''
      export PATH=$PATH:${pkgs.dmenu}/bin
      exec dmenu_run "$@"
   ''}")
    , ((_4  , xK_x      ), chooseAction spawnTermAt)
    , ((_4C , xK_x      ), spawnRootTerm)

    --, ((_4  , xK_F1     ), withFocused jojo)
    --, ((_4  , xK_F1     ), printAllGeometries)

    , ((0   , xK_Print   ), gets windowset >>= allWorkspaceNames >>= pager pagerConfig (windows . W.view) )
    , ((_S  , xK_Print   ), gets windowset >>= allWorkspaceNames >>= pager pagerConfig (windows . W.shift) )
    , ((_C  , xK_Print   ), toggleWS)

    -- %! Rotate through the available layout algorithms
    , ((_4  , xK_space  ), sendMessage NextLayout)
    , ((_4S , xK_space  ), setLayout $ XMonad.layoutHook conf) -- reset layout

    ---- BinarySpacePartition
    --, ((_4  , xK_l), sendMessage $ ExpandTowards R)
    --, ((_4  , xK_h), sendMessage $ ExpandTowards L)
    --, ((_4  , xK_j), sendMessage $ ExpandTowards D)
    --, ((_4  , xK_k), sendMessage $ ExpandTowards U)
    --, ((_4S , xK_l), sendMessage $ ShrinkFrom R)
    --, ((_4S , xK_h), sendMessage $ ShrinkFrom L)
    --, ((_4S , xK_j), sendMessage $ ShrinkFrom D)
    --, ((_4S , xK_k), sendMessage $ ShrinkFrom U)
    --, ((_4  , xK_n), sendMessage Rotate)
    --, ((_4S , xK_n), sendMessage Swap)

    ---- mouseResizableTile
    --, ((_4    , xK_u), sendMessage ShrinkSlave)
    --, ((_4    , xK_i), sendMessage ExpandSlave)

    -- move focus up or down the window stack
    --, ((_4  , xK_m      ), windows W.focusMaster)
    , ((_4  , xK_j      ), windows W.focusDown)
    , ((_4  , xK_k      ), windows W.focusUp)

    -- modifying the window order
    , ((_4S , xK_m      ), windows W.swapMaster)
    , ((_4S , xK_j      ), windows W.swapDown)
    , ((_4S , xK_k      ), windows W.swapUp)

    -- resizing the master/slave ratio
    , ((_4  , xK_h      ), sendMessage Shrink) -- %! Shrink the master area
    , ((_4  , xK_l      ), sendMessage Expand) -- %! Expand the master area

    -- floating layer support
    , ((_4  , xK_t      ), withFocused $ windows . W.sink)  -- make tiling

    -- increase or decrease number of windows in the master area
    , ((_4  , xK_comma  ), sendMessage $ IncMasterN 1)
    , ((_4  , xK_period ), sendMessage $ IncMasterN (-1))

    , ((_4  , xK_a      ), addWorkspacePrompt def)
    , ((_4  , xK_r      ), renameWorkspace def)
    , ((_4  , xK_Delete ), removeEmptyWorkspace)

    , ((_4  , xK_Return ), toggleWS)
    --,  (0   , xK_Print   ) & \k -> (k, gridselectWorkspace wsGSConfig { gs_navigate = makeGSNav k } W.view)
    --,  (_4  , xK_v      ) & \k -> (k, gridselectWorkspace wsGSConfig { gs_navigate = makeGSNav k } W.view)
    --,  (_4S , xK_v      ) & \k -> (k, gridselectWorkspace wsGSConfig { gs_navigate = makeGSNav k } W.shift)
    --,  (_4  , xK_b      ) & \k -> (k, goToSelected        wGSConfig  { gs_navigate = makeGSNav k })
    , ((noModMask, xF86XK_AudioLowerVolume), amixer ["sset", "Master", "5%-"])
    , ((noModMask, xF86XK_AudioRaiseVolume), amixer ["sset", "Master", "5%+"])
    , ((noModMask, xF86XK_AudioMute), amixer ["sset", "Master", "toggle"])
    ]
    where
    _4 = mod4Mask
    _C = controlMask
    _S = shiftMask
    _M = mod1Mask
    _4C = _4 .|. _C
    _4S = _4 .|. _S
    _4M = _4 .|. _M
    _4CM = _4 .|. _C .|. _M
    _4SM = _4 .|. _S .|. _M

    amixer args = forkFile amixerPath args Nothing


pagerConfig :: PagerConfig
pagerConfig = def
    { pc_font           = myFont
    , pc_cellwidth      = 100
    --, pc_cellheight     = 36 -- TODO automatically keep screen aspect
    --, pc_borderwidth    = 1
    --, pc_matchcolor     = "#f0b000"
    , pc_matchmethod    = MatchPrefix
    --, pc_colors         = pagerWorkspaceColors
    , pc_windowColors   = windowColors
    }
    where
    windowColors _ _ _ True _ = ("#ef4242","#ff2323")
    windowColors wsf m c u wf = do
        let y = defaultWindowColors wsf m c u wf
        if m == False && wf == True
            then ("#402020", snd y)
            else y

horseConfig :: RhombusConfig
horseConfig = def
    { rc_font           = myFont
    , rc_cellwidth      = 64
    --, rc_cellheight     = 36 -- TODO automatically keep screen aspect
    --, rc_borderwidth    = 1
    --, rc_matchcolor     = "#f0b000"
    , rc_matchmethod    = MatchPrefix
    --, rc_colors         = pagerWorkspaceColors
    --, rc_paint          = myPaint
    }

wGSConfig :: GSConfig Window
wGSConfig = def
    { gs_cellheight = 20
    , gs_cellwidth = 192
    , gs_cellpadding = 5
    , gs_font = myFont
    , gs_navigate = navNSearch
    }

-- wsGSConfig = def
--     { gs_cellheight = 20
--     , gs_cellwidth = 64
--     , gs_cellpadding = 5
--     , gs_font = myFont
--     , gs_navigate = navNSearch
--     }

-- custom navNSearch
--makeGSNav :: (KeyMask, KeySym) -> TwoD a (Maybe a)
--makeGSNav esc = nav
--    where
--    nav = makeXEventhandler $ shadowWithKeymap keyMap navNSearchDefaultHandler
--    keyMap = Map.fromList
--        [ (esc              , cancel)
--        , ((0,xK_Escape)    , cancel)
--        , ((0,xK_Return)    , select)
--        , ((0,xK_Left)      , move (-1, 0) >> nav)
--        , ((0,xK_Right)     , move ( 1, 0) >> nav)
--        , ((0,xK_Down)      , move ( 0, 1) >> nav)
--        , ((0,xK_Up)        , move ( 0,-1) >> nav)
--        , ((0,xK_BackSpace) , transformSearchString (\s -> if (s == "") then "" else init s) >> nav)
--        ]
--    -- The navigation handler ignores unknown key symbols, therefore we const
--    navNSearchDefaultHandler (_,s,_) = do
--        transformSearchString (++ s)
--        nav


(&) :: a -> (a -> c) -> c
(&) = flip ($)

allWorkspaceNames :: W.StackSet i l a sid sd -> X [i]
allWorkspaceNames ws =
    return $ map W.tag (W.hidden ws) ++ [W.tag $ W.workspace $ W.current ws]
  '';
  };
}