-- {{{ Imports

import Control.Monad (liftM2)
import XMonad
import XMonad.Actions.CopyWindow (copyToAll, killAllOtherCopies)
import XMonad.Actions.FloatSnap
import XMonad.Hooks.EwmhDesktops
import XMonad.Hooks.ManageDocks
import XMonad.Hooks.ManageHelpers
import XMonad.Hooks.OnPropertyChange (onXPropertyChange)
import XMonad.Hooks.StatusBar
import XMonad.Hooks.StatusBar.PP
import XMonad.Hooks.WindowSwallowing (swallowEventHook)
import XMonad.Layout.CenteredIfSingle
import XMonad.Layout.IndependentScreens
import XMonad.Layout.PerScreen
import XMonad.Layout.PerWorkspace
import XMonad.Layout.Renamed
import XMonad.Layout.Spacing
import XMonad.Layout.ThreeColumns
import XMonad.Util.EZConfig
import XMonad.Util.Loggers
import XMonad.Util.Paste
import qualified XMonad.StackSet as W
import qualified XMonad.Util.Hacks as Hacks

-- }}}

-- Statusbar {{{

pp' :: ScreenId -> PP -> PP
pp' s pp = (marshallPP s pp) { ppSort = ppSort pp }

pp :: PP
pp =
  def
    { ppSep = tertiaryColor "  ",
      ppCurrent = brackitify,
      ppHidden = secondaryColor,
      ppHiddenNoWindows = tertiaryColor,
      ppUrgent = red . wrap (yellow "!") (yellow "!"),
      ppLayout = id,
      ppTitle = shorten 80,
      ppTitleSanitize = xmobarStrip,
      ppOrder = \[workspaces, layout, windows, _] -> [workspaces, layout, windows],
      ppExtras = [logTitles formatFocused formatUnfocused]
    }
  where
    brackitify = wrap "〈" "〉"
    formatFocused = secondaryColor . ppWindow
    formatUnfocused = tertiaryColor . ppWindow

    ppWindow = xmobarRaw . (\w -> if null w then "Untitled" else w) . shorten 16

    primaryColor = xmobarColor "#000000" ""
    secondaryColor = xmobarColor "#333333" ""
    tertiaryColor = xmobarColor "#555555" ""
    yellow = xmobarColor "#ff0" ""
    red = xmobarColor "#ff5555" ""

-- }}}

-- Workspaces & screens {{{

-- Shift to workspace and view workspace
shiftAndView = doF . liftM2 (.) W.greedyView W.shift

-- }}}

-- Hooks {{{

-- startupHook {{{
myStartupHook =
  do
    spawn "killall polybar && polybar -r"
-- }}}

-- manageHook {{{
myManageHook :: ManageHook
myManageHook =
  composeAll
    [ isDialog --> doCenterFloat,
      className =? "Zathura" --> doShift "1_info",
      className =? "firefox" --> shiftAndView "1_www",
      className =? "firefoxdeveloperedition" --> shiftAndView "1_www",
      className =? "Anki" --> shiftAndView "1_etc",
      className =? "Obsidian" --> shiftAndView "1_etc",
      className =? "Launcher" --> doRectFloat (W.RationalRect 0.05 0.4 0.9 0.5),
      className =? "Zettelkasten" --> doRectFloat (W.RationalRect 0.05 0.4 0.9 0.5),
      className =? "Calculator" --> doCenterFloat,
      className =? "feh" --> doCenterFloat,
      -- Center matplotlib and prevent focus stealing
      -- className =? "matplotlib" --> doRectFloat (W.RationalRect 0.5 0.5 0.5 0.5),
      className =? "matplotlib" --> doCenterFloat,
      className =? "Matplotlib" --> doCenterFloat,
      className =? "Xournalpp" --> doRectFloat (W.RationalRect 0.5 0.5 0.5 0.5),
      className =? "KeePassXC" --> doRectFloat (W.RationalRect 0.1 0.1 0.8 0.8),
      className =? "flameshot" --> doRectFloat (W.RationalRect 0.1 0.1 0.8 0.8)
    ]
-- }}}

-- dynamicManageHook {{{
myDynamicManageHook :: ManageHook
myDynamicManageHook =
 composeAll
   [
     title =? "Zettelkasten — Firefox Developer Edition" --> doShift "1_sh"
   ]
-- }}}

-- layoutHook {{{
myLayoutHook =
  avoidStruts $
    smartSpacingWithEdge 4 $
      layoutHints $
        onWorkspace "1_sh" (Tall nmaster delta 0.8) $
          ifWider smallWidth (tWide ||| c3mWide ||| f) t
  where
    smallWidth = 1920

    -- Tall layouts
    tWide =
      centeredIfSingle 0.62 1 t
    t =
      named "[]+" $
        Tall nmaster delta ratio

    -- Column layouts
    c3mWide =
      centeredIfSingle 0.62 1 c3m
    c3m =
      named "[|]" $
        ThreeColMid nmaster delta ratio

    -- Fullscreen layouts
    f = named "[+]" Full

    -- Modifiers
    named n = renamed [Replace n]
    nmaster = 1
    ratio = 0.62
    delta = 4 / 100
-- }}}

-- handleEventHook {{{
myHandleEventHook =
  handleEventHook def
    -- See window swallowing (https://hackage.haskell.org/package/xmonad-contrib-0.18.0/docs/XMonad-Hooks-WindowSwallowing.html)
    <> swallowEventHook (className =? "Alacritty") (return True)
    <> onXPropertyChange "WM_NAME" myDynamicManageHook
    <> Hacks.windowedFullscreenFixEventHook
    <> hintsEventHook
-- }}}

-- }}}

-- Main config {{{

myWorkspaces = [ "sh", "www", "dev", "info", "etc" ]
myWorkspaceKeys = [ "a", "s", "d", "f", "g" ]
mySharedWorkspaces = [ "shared" ]
mySharedWorkspaceKeys = [ "1" ]
-- Use Win key instead of Alt
myModMask = mod4Mask

myConfig =
  def
    { terminal = "alacritty",
      modMask = myModMask,
      workspaces = withScreen 1 myWorkspaces ++ withScreen 2 mySharedWorkspaces,
      -- Styling
      focusedBorderColor = "#000",
      normalBorderColor = "#0000",
      borderWidth = 4,
      -- Hooks
      startupHook = myStartupHook,
      manageHook = myManageHook <+> manageHook def,
      layoutHook = myLayoutHook,
      handleEventHook = myHandleEventHook
    }
    `removeKeysP` myRemoveKeys
    `additionalKeysP` myKeys
    `additionalMouseBindings` myMouseBindings

-- }}}

-- Keybindings {{{

-- Keybindings to be added/overridden
myKeys :: [(String, X ())]
myKeys =
  [ ("M-<Space> s", unfloatFocusedW),
    ("M-<Space> <Space>", nextLayout),          -- Cycle through layouts
    ("M-<Space> S-<Space>", defaultLayout),     --
    ("M-<Space> M-<Space>", nextLayout),        -- ..fat finger
    ("M-<Space> M-S-<Space>", defaultLayout),   --
    ("<F8>",  spawnKeepassXC),
    ("M-z",   spawnZettelkasten),
    ("M-p",   spawnLauncher),
    ("M-w", spawnWindowSwitcher),
    ("M-S-w", spawnWifiMenu),
    ("<Insert>", pasteSelection),
    ("<Print>", printScreen),
    ("<XF86AudioRaiseVolume>", raiseVol),       -- Audio volume & playback
    ("<XF86AudioLowerVolume>", lowerVol),       --
    ("<XF86AudioMute>", mute),                  --
    ("M-<Right>", nextTrack),                   --
    ("M-<Left>", prevTrack),                    --
    ("M-<Up>", play),                           --
    ("M-<Down>", pause),                        --
    ("<XF86MonBrightnessUp>", brighten),        -- Brightness & hue controls
    ("<XF86MonBrightnessDown>", dim),           --
    ("S-<XF86MonBrightnessUp>", warm),          --
    ("S-<XF86MonBrightnessDown>", cool),        --
    ("M-S-<XF86MonBrightnessUp>", resetTemp),   --
    ("M-S-<XF86MonBrightnessDown>", resetTemp), --
    ("M-S-b", fullscreenBrowser),
    ("<XF86Calculator>", spawnCalculator),
    ("<XF86PowerOff>", spawn "systemctl suspend"), --TODO: Only enable this on laptop
    ("M-c", windows copyToAll),
    ("M-S-c", killAllOtherCopies),
    ("M-S-<Delete>", kill)
  ] ++
  [ (m ++ k, windows $ f w) |
    (m, f) <- zip ["M-", "M-S-"]
                  [W.greedyView, W.shift],
                  (k, w) <- zip myWorkspaceKeys
                                (withScreen 1 myWorkspaces)
                         ++ zip mySharedWorkspaceKeys
                                (withScreen 2 mySharedWorkspaces)
  ]

zipKeyPrefixes :: [String] -> [String] -> [String]
zipKeyPrefixes prefixes keys = [prefix ++ key | prefix <- prefixes, key <- keys]

-- Keybindings to be removed
myRemoveKeys :: [String]
myRemoveKeys = "M-S-q" : zipKeyPrefixes ["M-", "M-S-"] (map show [ 1..5 ])

myMouseBindings =
  [
      ((mod4Mask,               button1), (\w -> focus w >> mouseMoveWindow w >> afterDrag (snapMagicMove (Just 50) (Just 50) w)))
    , ((mod4Mask .|. shiftMask, button1), (\w -> focus w >> mouseMoveWindow w >> afterDrag (snapMagicResize [L,R,U,D] (Just 50) (Just 50) w)))
    , ((mod4Mask,               button3), (\w -> focus w >> mouseResizeWindow w >> afterDrag (snapMagicResize [R,D] (Just 50) (Just 50) w)))
  ]

unfloatFocusedW :: X ()
unfloatFocusedW = withFocused $ windows . W.sink

myStartupHook :: X ()
nextLayout = sendMessage NextLayout

defaultLayout :: X ()
defaultLayout = setLayout $ Layout myLayoutHook

spawnZettelkasten :: X ()
spawnZettelkasten = spawn "alacritty --class Zettelkasten,Zettelkasten -e nvim $(cat ~/.zk/current-zettel.txt)"

spawnKeepassXC :: X ()
spawnKeepassXC = spawn "keepassxc"

fullscreenBrowser :: X ()
fullscreenBrowser = spawn "firefox --fullscreen"

spawnWindowSwitcher = spawn "rofi -show window -show-icons"
spawnWifiMenu = spawn "rofi -show wifi -modi \"wifi:iwdrofimenu\""

spawnLauncher, spawnClipManager, spawnCalculator :: X ()
spawnLauncher = spawn "rofi -show drun -show-icons"
spawnClipManager = spawn "rofi -modi 'clipboard:greenclip print' -show clipboard -run-command '{cmd}'"
spawnCalculator = spawn "alacritty --class 'Calculator' -e ipython -i /home/h/.bin/calc.py"

printScreen :: X ()
printScreen = spawn "flameshot gui"

raiseVol, lowerVol, mute :: X ()
raiseVol = spawn "pactl set-sink-volume @DEFAULT_SINK@ +5%"
lowerVol = spawn "pactl set-sink-volume @DEFAULT_SINK@ -5%"
mute = spawn "pactl set-sink-mute @DEFAULT_SINK@ toggle"

nextTrack, prevTrack, play, pause :: X ()
nextTrack = spawn "playerctl next"
prevTrack = spawn "playerctl previous"
play = spawn "playerctl play"
pause = spawn "playerctl pause"

brighten, dim, warm, cool, resetTemp :: X ()
brighten = spawn "brightnessctl set 20+"
dim = spawn "brightnessctl set 20-"
warm = spawn "screen-temperature +50"
cool = spawn "screen-temperature -50"
resetTemp = spawn "screen-temperature 3000"

-- }}}

-- Main {{{

main :: IO ()
main =
  do { xmonad } $
    ewmh $
      withEasySB
        (sb1 <> sb2)
        defToggleStrutsKey
        myConfig
  where
    [sb1, sb2] = [statusBarProp "polybar" $ pure (pp' (S i) pp) | i <- [0 .. 1]]

-- }}}