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import XMonad
import XMonad.Util.EZConfig
import XMonad.StackSet

import XMonad.Hooks.EwmhDesktops
import XMonad.Hooks.ManageHelpers
import XMonad.Hooks.InsertPosition

import XMonad.Layout.NoBorders
import XMonad.Layout.Tabbed
import XMonad.Layout.ToggleLayouts
import XMonad.Layout.MultiToggle
import XMonad.Layout.MultiToggle.Instances

import XMonad.Util.Themes
import XMonad.Util.NamedScratchpad

import XMonad.Actions.SpawnOn
import XMonad.Actions.CycleWS
import XMonad.Actions.WindowBringer
import XMonad.Actions.GroupNavigation
import XMonad.Actions.FloatKeys

import System.Exit
import Data.Maybe
import Control.Monad (when)
import qualified Data.Map as M

workspaces :: [WorkspaceId]
workspaces = map show [1 .. 9 :: Int]

customTabTheme = (theme xmonadTheme)
  { fontName      = "xft:Iosevka Medium-12"
  , decoHeight    = 20
  , activeTextColor     = "#222222"
  , activeColor         = "#909636"
  , inactiveTextColor   = "#999999"
  , inactiveColor       = "#161616"
  , activeBorderColor   = "#909636"
  , inactiveBorderColor = "#161616" }

availableLayouts = id
  . smartBorders
  . mkToggle (single NBFULL)
  $ toggleLayouts tabs tiles
  where
    tabs  = tabbed shrinkText customTabTheme
    tiles = mkToggle (single MIRROR) $ Tall 1 delta ratio
    ratio = 1/2
    delta = 3/100

windowBringerDmenuConfig = def { menuCommand  = "rofi"
                               , menuArgs     = [ "-p", "win", "-dmenu", "-i" ] }

floatRectTop    h = hideScreenBorder $ RationalRect (1/20) 0      (18/20) h
floatRectBottom h = hideScreenBorder $ RationalRect (1/20) (1-h)  (18/20) h
floatRectLeft   w = hideScreenBorder $ RationalRect 0      (1/20) w       (18/20)
floatRectRight  w = hideScreenBorder $ RationalRect (1-w)  (1/20) w       (18/20)

dropUp        = floatRectBottom $ 2/3
dropUpLarge   = floatRectBottom $ 18/20
dropDown      = floatRectTop    $ 2/3
dropDownLarge = floatRectTop    $ 18/20
sideBarLeft   = floatRectLeft   $ 1/2
sideBarRight  = floatRectRight  $ 1/2

scratchpads = [ NS "terminal" "kitty --class=scratchterm" (className =? "scratchterm")
                   (customFloating dropDown)
              , NS "browser" "firefox" (className =? "Firefox")
                   (customFloating dropDownLarge)
              , NS "documentation" "zeal" (className =? "Zeal")
                   (customFloating dropDown)
              , NS "messaging" "telegram-desktop" (className =? "TelegramDesktop")
                   (customFloating sideBarRight) ]

customKeybindings =
-- xmonad session control
  [ ("C-M1-<Escape>"    , io (exitWith ExitSuccess))
  , ("C-M1-<Backspace>" , spawn "xmonad --restart")
  , ("C-M1-l"           , spawn "i3lock -c 000000")
-- application launchers
  , ("M-<Space>"     , spawn "rofi -show combi")
  , ("M-<Return>"    , spawn "kitty")
  , ("M-S-<Return>"  , spawn "nvim-qt")
  , ("<Print>"       , spawn "xfce4-screenshooter")
-- window management
  , ("M-q"           , windows $ shift "NSP")
  , ("M-S-q"         , kill)
  , ("M-j"           , windows focusDown)
  , ("M-k"           , windows focusUp)
  , ("M-S-j"         , windows swapDown)
  , ("M-S-k"         , windows swapUp)
  , ("M-h"           , sendMessage Shrink)
  , ("M-l"           , sendMessage Expand)
  , ("M-<Backspace>" , nextMatch History (return True))
-- window bringer
  , ("M-a"           , gotoMenuConfig  windowBringerDmenuConfig)
  , ("M-S-a"         , bringMenuConfig windowBringerDmenuConfig)
-- scratchpads
  , ("M-b"           , namedScratchpadAction scratchpads "browser")
  , ("M-d"           , namedScratchpadAction scratchpads "documentation")
  , ("M-m"           , namedScratchpadAction scratchpads "messaging") ] ++
-- workspace selection
  [ (p ++ [k]        , windows $ f i) | (i, k) <- zip Main.workspaces ['1' .. '9']
                                      , (p, f) <- [ ("M-"   , greedyView)
                                                  , ("M-S-" , shift) ] ] ++
-- workspace management
  [ ("M-s l"         , sendMessage ToggleLayout)
  , ("M-s m"         , sendMessage $ XMonad.Layout.MultiToggle.Toggle MIRROR)
  , ("M-s f"         , sendMessage $ XMonad.Layout.MultiToggle.Toggle NBFULL)
  , ("M-s p"         , toggleWS' ["NSP"])
  , ("M-s j"         , moveTo  Next nonEmptyWS)
  , ("M-s k"         , moveTo  Prev nonEmptyWS)
  , ("M-S-s j"       , shiftTo Next nonEmptyWS >> moveTo Next nonEmptyWS)
  , ("M-S-s k"       , shiftTo Prev nonEmptyWS >> moveTo Prev nonEmptyWS)
-- floating placement
  , ("M-w t"         , withFocused $ windows . sink)
  , ("M-w f"         , withFocused $ placeFloating $ RationalRect 0 0 1 1)
  , ("M-w j"         , withFocused $ placeFloating dropUp)
  , ("M-w S-j"       , withFocused $ placeFloating dropUpLarge)
  , ("M-w k"         , withFocused $ placeFloating dropDown)
  , ("M-w S-k"       , withFocused $ placeFloating dropDownLarge)
  , ("M-w h"         , withFocused $ placeFloating sideBarLeft)
  , ("M-w l"         , withFocused $ placeFloating sideBarRight)
-- system information
  , ("M-i t"         , spawn "notify-send \"`date +%T`\" \"`date +\"%Y-%m-%d\"`\"")
  , ("M-i b"         , spawn "notify-send Battery \"`acpi | cut -c 10-`\"")
-- system control
  , ("M-c <Up>"      , spawn "amixer sset Master 10%+")
  , ("M-c <Down>"    , spawn "amixer sset Master 10%-")
  , ("M-c m"         , spawn "amixer sset Master toggle") ]

customMousebindings (XConfig {XMonad.modMask = modMask}) = M.fromList
  [ ((modMask .|. shiftMask, button1), \w -> XMonad.focus w >> mouseMoveWindow w)
  , ((modMask .|. shiftMask, button3), \w -> XMonad.focus w >> mouseResizeWindow w) ]

customEventHook = do
  handleEventHook def
  fullscreenEventHook

customManageHook = composeOne
  [ hasRole "GtkFileChooserDialog" -?> doRectFloat dropDown
  , isDialog                       -?> doCenterFloat
  , transience
  , pure True -?> insertPosition Below Newer <+> namedScratchpadManageHook scratchpads ]
  where
    hasRole x = stringProperty "WM_WINDOW_ROLE" =? x

customLogHook = do
  historyHook
  customizeBorderWhen (isFloat <&&> isNotFullscreen) "#aadb0f" 6

main = xmonad $ ewmh
              $ def
  { modMask             = mod4Mask -- super key as modifier
  , borderWidth         = 3
  , normalBorderColor   = "#161616"
  , focusedBorderColor  = "#909636"
  , keys                = \c -> mkKeymap c customKeybindings
  , mouseBindings       = customMousebindings
  , startupHook         = return () >> checkKeymap def customKeybindings
  , handleEventHook     = customEventHook
  , manageHook          = customManageHook
  , logHook             = customLogHook
  , layoutHook          = availableLayouts }
  `additionalKeys`
  [ ((noModMask, xK_Menu) , namedScratchpadAction scratchpads "terminal") ]

nonEmptyWS = WSIs $ return (\w -> nonNSP w && nonEmpty w)
  where nonNSP (Workspace tag _ _) = tag /= "NSP"
        nonEmpty = isJust . stack

placeFloating :: RationalRect -> Window -> X ()
placeFloating rect = windows . (flip XMonad.StackSet.float $ rect)

windowSize w = do
  r <- withDisplay $ (\d -> io $ getWindowAttributes d w)
  return (fromIntegral $ wa_width r, fromIntegral $ wa_height r)

withCurrentScreen     f = withWindowSet     $ \ws -> f (current ws)
withCurrentScreenRect f = withCurrentScreen $ \s  -> f