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

let
  laptop = builtins.readFile "/etc/hostname" == "syl\n";
  cosmic-extra-niri = pkgs.writeShellScriptBin "cosmic-extra-niri" ''
set -e

# From: https://people.debian.org/~mpitt/systemd.conf-2016-graphical-session.pdf

if command -v systemctl >/dev/null; then
    # robustness: if the previous graphical session left some failed units,
    # reset them so that they don't break this startup
    for unit in $(systemctl --user --no-legend --state=failed --plain list-units | cut -f1 -d' '); do
        partof="$(systemctl --user show -p PartOf --value "$unit")"
        for target in cosmic-session.target graphical-session.target; do
            if [ "$partof" = "$target" ]; then
                systemctl --user reset-failed "$unit"
                break
            fi
        done
    done
fi

# use the user's preferred shell to acquire environment variables
# see: https://github.com/pop-os/cosmic-session/issues/23
if [ -n "''${SHELL}" ]; then
    # --in-login-shell: our flag to indicate that we don't need to recurse any further
    if [ "''${1}" != "--in-login-shell" ]; then
        # `exec -l`: like `login`, prefixes $SHELL with a hyphen to start a login shell
        exec bash -c "''${0} --in-login-shell"
    fi
fi

export XDG_CURRENT_DESKTOP="''${XDG_CURRENT_DESKTOP:=niri}"
export XDG_SESSION_TYPE="''${XDG_SESSION_TYPE:=wayland}"
export XCURSOR_THEME="''${XCURSOR_THEME:=Cosmic}"
export _JAVA_AWT_WM_NONREPARENTING=1
export GDK_BACKEND=wayland,x11
export MOZ_ENABLE_WAYLAND=1
export QT_QPA_PLATFORM="wayland;xcb"
export QT_AUTO_SCREEN_SCALE_FACTOR=1
export QT_ENABLE_HIGHDPI_SCALING=1

if command -v systemctl >/dev/null; then
    # set environment variables for new units started by user service manager
    systemctl --user import-environment XDG_SESSION_TYPE XDG_CURRENT_DESKTOP
fi
# Run cosmic-session
if [[ -z "''${DBUS_SESSION_BUS_ADDRESS}" ]]; then
    exec dbus-run-session -- ${pkgs.cosmic-session}/bin/cosmic-session niri
else
    exec ${pkgs.cosmic-session}/bin/cosmic-session niri
fi
  '';
in
{
  home.packages = with pkgs; [
    cosmic-extra-niri
  ];
  programs.niri = {
    # enable = true;
    settings = {
      prefer-no-csd = true;
      binds = with config.lib.niri.actions; {
        "XF86AudioRaiseVolume".action.spawn = ["volup"];
        "XF86AudioLowerVolume".action.spawn = ["voldown"];
        "Super+E".action.spawn = "nu nirilof emacs 'emacslient -c'";
        "Super+Return".action.spawn = "alacritty";
        "Super+B".action.spawn = "nu nirilof org.qutebrowser.qutebrowser qutebrowser";
        "Super+Space".action.spawn = "cosmic-launcher";
        "Super+Shift+Q".action = quit;
        "Super+O".action = toggle-overview;
        "Super+F".action = fullscreen-window;
        "Super+Shift+F".action = toggle-windowed-fullscreen;
        "Super+C".action = close-window;
        "Super+P".action.spawn = "/home/chris/bin/rbw.sh";
        "Super+Left".action = focus-column-left;
        "Super+H".action = focus-column-left;
        "Super+Shift+H".action = move-column-left;
        "Super+Right".action = focus-column-right;
        "Super+L".action = focus-column-right;
        "Super+Shift+L".action = move-column-right;
        "Super+Ctrl+L".action = set-column-width "+10%";
        "Super+Ctrl+H".action = set-column-width "-10%";
        "Super+M".action = set-column-width "95%";
      };
      spawn-at-startup = [
        { argv = ["waybar"]; }
        { argv = ["kwalled6"]; }
        { argv = ["swww-daemon"]; }
        { argv = ["rbw-agent"]; }
        { argv = ["/usr/lib/kdeconnectd"]; }
        { argv = ["kdeconnect-indicator"]; }
        { argv = ["wl-paste --watch cliphist store"]; }
        { argv = ["swww img /home/chris/pics/wallpapers/tech.jpg --resize crop -t grow --transition-bezier .14,0,.14,.99"]; }
        { argv = ["dbus-update-activation-environment --systemd --all"]; }
      ];
      workspaces = {
        "main" = {
          open-on-output = "eDP-1";
        };
      };
      window-rules = [
        {
          geometry-corner-radius = {
            top-left = 16.0;
            top-right = 16.0;
            bottom-left = 16.0;
            bottom-right = 16.0;
          };
          clip-to-geometry = true;
          draw-border-with-background = false;
        }
        {
          matches = [ {app-id = "emacs";} ];
          open-on-workspace = "main";
        }
        {
          matches = [{app-id = "org.qutebrowser.qutebrowser";}];
          open-on-workspace = "main";
        }
        {
          matches = [{app-id = "com.system76.CosmicFiles";}];
          open-on-workspace = "main";
          open-floating = true;
        }
      ];
      layout = {
        gaps = 15;
        struts = {
          bottom = 5;
          left = 5;
          right = 5;
          top = 5;
        };
        shadow = {
          enable = true;
          draw-behind-window = false;
          inactive-color = "#00000000";
          softness = 10;
          spread = 15;
        };
        border = {
          enable = false;
          width = 4;
          active = { color = "#57c7ff"; };
          inactive = { color = "#5af78e"; };
        };
        focus-ring = {
          enable = true;
          width = 4;
          active = { color = "#5af78e"; };
        };
      };
      screenshot-path = "~/pics/screenshot_%Y-%m-%d_%H-%M-%S.png";
      cursor = {
        hide-after-inactive-ms = 3000;
        hide-when-typing = true;
        theme = "phinger-cursors-light";
      };
      outputs = {
        "eDP-1" = {
          enable = true;
          name = "A";
          mode = {
            height = 1504;
            width = 2256;
            refresh = 60.0;
          };
        };
      };
      input = {
        mod-key = "Super";
        touchpad = {
          accel-profile = "adaptive";
          accel-speed = 0.75;
          click-method = "clickfinger";
          drag = true;
        };
        keyboard = {
          repeat-delay = 180;
          repeat-rate = 180;
        };
        warp-mouse-to-focus = {
          enable = true;
        };
      };
      environment = {

      };
    };
  };
}