{ config, lib, pkgs, ... }:
let
  cfg = config.this.application.sway;
  graphical = config.this.graphical;
  wallpaper = pkgs.fetchurl {
    url =
      "https://raw.githubusercontent.com/catppuccin/wallpapers/main/landscapes/evening-sky.png";
    sha256 = "sha256-fYMzoY3un4qGOSR4DMqVUAFmGGil+wUze31rLLrjcAc=";
  };
in with lib; {
  options = {
    this.application.sway = {
      enable = mkOption {
        default = graphical.enable;
        type = with types; bool;
      };
    };
  };

  config = mkIf cfg.enable {
    home-manager.users.james = {
      home.sessionVariables = { XDG_CURRENT_DESKTOP = "sway"; };
      wayland.windowManager.sway = {
        enable = true;
        wrapperFeatures.gtk = true;
        config = {
          bars = [ ];
          colors = {
            focusedInactive = {
              background = "#1E1E2E";
              border = "#1E1E2E";
              childBorder = "#1E1E2E";
              indicator = "#1E1E2E";
              text = "#C9CBFF";
            };
            unfocused = {
              background = "#1E1E2E";
              border = "#1E1E2E";
              childBorder = "#1E1E2E";
              indicator = "#1E1E2E";
              text = "#C9CBFF";
            };
            focused = {
              background = "#131020";
              border = "#131020";
              childBorder = "#131020";
              indicator = "#131020";
              text = "#ABE9B3";
            };
            urgent = {
              background = "#F28FAD";
              border = "#F28FAD";
              childBorder = "#F28FAD";
              indicator = "#F28FAD";
              text = "#ABE9B3";
            };
          };
          fonts = {
            names = [ "Alegreya" "FontAwesome" ];
            size = 9.0;
          };
          input = {
            "1133:45079:MX_Master_Mouse" = {
              natural_scroll = "enable";
              accel_profile = "adaptive";
              pointer_accel = "-0.3";
            };
            "1:1:AT_Translated_Set_2_keyboard" = {
              xkb_options = "ctrl:nocaps";
            };
            "2:7:SynPS/2_Synaptics_TouchPad" = {
              dwt = "enabled";
              click_method = "clickfinger";
              natural_scroll = "enabled";
              middle_emulation = "enabled";
            };
          };
          gaps = {
            inner = 5;
            outer = 2;
          };
          # And import and scripts as scene here would be good.
          # https://github.com/gytis-ivaskevicius/nixfiles/blob/master/home-manager/i3-sway.nix
          keybindings = mkOptionDefault { "Mod4+d" = ""; };
          modifier = "Mod4";
          output = { "eDP-1" = { bg = "${wallpaper} fill"; }; };
          terminal = "${pkgs.kitty}/bin/kitty";
          # https://rycee.gitlab.io/home-manager/options.html#opt-wayland.windowManager.sway.config.window.commands
          window = { };
        };
      };

      home.packages = with pkgs; [
        autotiling
        dmenu
        grim
        imagemagick
        slurp
        gammastep
        swayidle
        swaylock
        playerctl
        wl-clipboard
        wofi
        (writeTextFile {
          name = "sway-entry";
          destination = "/bin/sway-entry";
          executable = true;
          text = ''
            #! ${pkgs.bash}/bin/bash

            # first import environment variables from the login manager
            # function is currently deprecated. It should be rolled back in the future
            systemctl --user import-environment

            # then start the service
            exec systemctl --user start sway.service
          '';
        })
      ];
    };

    programs.light.enable = true;

    systemd.user.targets.sway-session = {
      description = "Sway compositor session";
      documentation = [ "man:systemd.special(7)" ];
      bindsTo = [ "graphical-session.target" ];
      wants = [ "graphical-session-pre.target" ];
      after = [ "graphical-session-pre.target" ];
    };

    systemd.user.services.sway = {
      enable = true;
      description = "Sway - Wayland window manager";
      documentation = [ "man:sway(5)" ];
      bindsTo = [ "default.target" ];
      wants = [ "graphical-session-pre.target" ];
      after = [ "graphical-session-pre.target" ];
      # We explicitly unset PATH here, as we want it to be set by
      # systemctl --user import-environment in startsway
      environment.PATH = lib.mkForce null;
      serviceConfig = {
        Type = "simple";
        ExecStart =
          "${pkgs.dbus}/bin/dbus-run-session ${pkgs.sway}/bin/sway --debug";
        ExecStopPost =
          "/usr/bin/env systemctl --user unset-environment SWAYSOCK DISPLAY I3SOCK WAYLAND_DISPLAY";
        NotifyAccess = "all";
        Restart = "on-failure";
        RestartSec = 1;
        TimeoutStopSec = 10;
      };
    };

    users.users.james.extraGroups = [ "video" "audio" ];
  };
}