{ config, lib, pkgs, ... }:

let 
  cfg = config.jade.desktop;
  window-screenshot = pkgs.writeShellScriptBin "window-screenshot.sh" ''
    unset x y w h
    eval $(xwininfo -id $(xdotool getactivewindow) |
      sed -n -e "s/^ \+Absolute upper-left X: \+\([0-9]\+\).*/x=\1/p" \
             -e "s/^ \+Absolute upper-left Y: \+\([0-9]\+\).*/y=\1/p" \
             -e "s/^ \+Width: \+\([0-9]\+\).*/w=\1/p" \
             -e "s/^ \+Height: \+\([0-9]\+\).*/h=\1/p" )
    echo -n "''$x ''$y ''$w ''$h"
    flameshot gui --region "''${w}x''${h}+''${x}+''${y}" -c -p ~/Pictures/screenshots/
  '';
in with lib; {
  options.jade.desktop = {
    enable = mkEnableOption "Enable the i3 setup";
  };
  config = mkIf cfg.enable {
    home-manager.users.jade = { pkgs, ... }: {
      home.packages = with pkgs; [
        gnome.gdm i3lock-fancy rofi rofimoji volumeicon feh xorg.xinput dunst
        arandr lxappearance gruvbox-dark-gtk gruvbox-dark-icons-gtk 
        gruvterial-theme flameshot tesseract5 imagemagick xclip polybar kitty
        xkeysnail gtk-engine-murrine playerctl xmacro
        window-screenshot
      ];
      xsession = {
        enable = true;
        windowManager.i3 = {
          enable = true;
          package = pkgs.i3-gaps;
          config = {
            terminal = "kitty";
            modifier = "Mod4";
            gaps = {
              inner = 15;
              outer = 0;
              smartGaps = true;
            };
            modes = {
              resize = with {
                aaa = builtins.trace "foo" "bar";
                mod = builtins.trace config config.xsession.windowManager.i3.config.modifier;
              }; {
                "${mod}+h" = "resize shrink width 10 px or 10 ppt";
                "${mod}+j" = "resize grow height 10 px or 10 ppt";
                "${mod}+k" = "resize shrink height 10 px or 10 ppt";
                "${mod}+l" = "resize grow width 10 px or 10 ppt";

                "Return" = "mode default";
                "Escape" = "mode default";
                "${mod}+r" = "mode default";
              };
            };
            keybindings = with {
                 mod = config.xsession.windowManager.i3.config.modifier;
            }; {
              # switch window focus
              "${mod}+h" = "focus left";
              "${mod}+j" = "focus down";
              "${mod}+k" = "focus up";
              "${mod}+l" = "focus right";
              # move windows
              "${mod}+Shift+h" = "move left";
              "${mod}+Shift+j" = "move down";
              "${mod}+Shift+k" = "move up";
              "${mod}+Shift+l" = "move right";
              # layout shit 
              "${mod}+shift+semicolon" = "split h";
              "${mod}+semicolon" =  "split v";
              "${mod}+f" = "fullscreen toggle";
              "${mod}+Shift+w" = "layout tabbed";
              "${mod}+e" = "layout toggle split";
              "${mod}+Shift+space" = "floating toggle";
              # focus parents/children
              "${mod}+Shift+a" = "focus parent";
              "${mod}+c" = "focus child";
              # custom script shit
              "${mod}+w" = "exec window-screenshot.sh";
            };
          };
        };
      };
    };
  };
}