{
  config,
  inputs,
  lib,
  pkgs,
  ...
}:
with lib; let
  audio = config.home-manager.users.${config.custom.username}.home.file.".local/bin/audio".source;
  bash = "${pkgs.bash}/bin/bash";
  blueberry = "${pkgs.blueberry}/bin/blueberry";
  bluetoothctl = "${pkgs.bluez}/bin/bluetoothctl";
  cat = "${pkgs.coreutils}/bin/cat";
  easyeffects = "${pkgs.easyeffects}/bin/easyeffects";
  echo = "${pkgs.coreutils}/bin/echo";
  grep = "${pkgs.gnugrep}/bin/grep";
  hyprctl = "${config.programs.hyprland.package}/bin/hyprctl";
  inhibit = config.home-manager.users.${config.custom.username}.home.file.".local/bin/inhibit".source;
  jq = "${pkgs.jq}/bin/jq";
  loginctl = "${pkgs.systemd}/bin/loginctl";
  network = config.home-manager.users.${config.custom.username}.home.file.".local/bin/network".source;
  nm-connection-editor = "${pkgs.networkmanagerapplet}/bin/nm-connection-editor";
  pgrep = "${pkgs.procps}/bin/pgrep";
  ping = "${pkgs.iputils}/bin/ping";
  pkill = "${pkgs.procps}/bin/pkill";
  playerctl = "${pkgs.playerctl}/bin/playerctl";
  power = config.home-manager.users.${config.custom.username}.home.file.".local/bin/power".source;
  remote = config.home-manager.users.${config.custom.username}.home.file.".local/bin/remote".source;
  rfkill = "${pkgs.util-linux}/bin/rfkill";
  sleep = "${pkgs.coreutils}/bin/sleep";
  swaync-client = "${config.home-manager.users.${config.custom.username}.services.swaync.package}/bin/swaync-client";
  swayosd-client = "${pkgs.swayosd}/bin/swayosd-client";
  systemctl = "${pkgs.systemd}/bin/systemctl";
  systemd-inhibit = "${pkgs.systemd}/bin/systemd-inhibit";
  tailscale = "${pkgs.tailscale}/bin/tailscale";
  tr = "${pkgs.coreutils}/bin/tr";
  vpn = config.home-manager.users.${config.custom.username}.home.file.".local/bin/vpn".source;
  wttrbar = "${pkgs.wttrbar}/bin/wttrbar";

  cfg = config.custom.programs.waybar;
in {
  options.custom.programs.waybar.enable = mkOption {default = false;};

  config = mkIf cfg.enable {
    age.secrets = let
      secret = filename: {
        file = "${inputs.self}/secrets/${filename}";
        owner = config.custom.username;
        group = "users";
      };
    in {
      "desktop/vm/myndows.pass" = secret "desktop/vm/myndows.pass";
    };

    home-manager.users.${config.custom.username} = {
      # https://github.com/Alexays/Waybar
      # https://www.nerdfonts.com/cheat-sheet
      programs.waybar = {
        enable = true;
        systemd.enable = true; # Start on login

        # ?? waybar --log-level debug
        style = let
          gap = toString config.custom.gap;
        in ''
          * {
            border-radius: 50px;
            color: #93a1a1;
            font: 18px '${config.custom.font.monospace}';
            margin: 0;
            padding: 0;
          }

          .horizontal > box {
            margin: 0 ${gap}px ${gap}px;
          }

          ${readFile ./style.css}
        '';

        ### SETTINGS ###
        # https://github.com/Alexays/Waybar/wiki/Configuration
        #?? pkill -SIGUSR2 -x waybar
        settings = let
          ## INHERIT ##
          #!! Module defaults are not accurate to documentation
          # TODO: Submit pull request to fix in addition to inconsistent hyphen vs underscore
          # https://github.com/Alexays/Waybar/wiki/Module:-Cava
          cava-config = {
            cava_config = null; # Default: null?
            framerate = 30; # Default: 30?
            autosens = 1; # Default: 1
            # sensitivity = 0; # Default: 100?
            bars = 16; # Default: 2
            lower_cutoff_freq = 50; # Default: 50?
            higher_cutoff_freq = 10000; # Default: 10000?
            sleep_timer = 5; # Default: 0
            hide_on_silence = true; # Default: false
            method = "pipewire"; # Default: pulse
            source = "auto"; # Default: auto?
            sample_rate = 44100; # Default: 44100?
            sample_bits = 16; # Default: 16?
            stereo = false; # Default: true
            reverse = false; # Default: false
            bar_delimiter = 32; # ASCII code for space, default: 59 or ;
            monstercat = true; # Default: false?
            waves = true; # Default: false?
            noise_reduction = 0.2; # Default: 0.77?
            input_delay = 1; # Default: 4
            format-icons = [
              "▁"
              "▂"
              "▃"
              "▄"
              "▅"
              "▆"
              "▇"
              "█"
            ]; # !! Required
            on-click = easyeffects;
            on-scroll-up = "${swayosd-client} --output-volume raise";
            on-scroll-down = "${swayosd-client} --output-volume lower";
            rotate = 180;
          };
        in {
          status = {
            reload_style_on_change = true; # Reload CSS when modified

            ## GLOBAL ##
            layer = "top";
            position = "bottom";

            ## POSITION ##
            modules-left = [
              "custom/power"
              "custom/inhibitor"
              "custom/vpn"
              "custom/vm"
              (mkIf config.custom.desktops.hyprland.enable "hyprland/workspaces")
              (mkIf config.custom.desktops.niri.enable "niri/workspaces")
            ];
            modules-center = [
              "clock"
              "custom/weather"
            ];
            modules-right = [
              "mpris"
              "tray"
              "custom/equalizer"
              "wireplumber"
              "bluetooth"
              "network"
              "battery"
            ];

            ## MODULES ##
            # https://github.com/Alexays/Waybar/wiki/Module:-Custom
            "custom/power" = {
              format = "";
              on-click = "${systemctl} poweroff";
              on-click-right = "${systemctl} reboot";
              on-click-middle = "${loginctl} terminate-session ''";
            };

            "custom/inhibitor" = {
              interval = 5;
              exec = "~/.config/waybar/scripts/inhibitor.sh";
              on-click = inhibit;
            };

            "custom/vm" = {
              interval = 5;
              exec = "~/.config/waybar/scripts/vm.sh";
              on-click = ''${remote} --vm --client xfreerdp --username Myned --password "$(${cat} ${config.age.secrets."desktop/vm/myndows.pass".path})" ${
                  if config.custom.hidpi
                  then "--scale 140"
                  else ""
                } myndows'';
            };

            "custom/vpn" = {
              interval = 5;
              exec = "~/.config/waybar/scripts/vpn.sh";
              on-click = "${vpn} mypi3";
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-Idle-Inhibitor
            # FIXME: Not currently usable
            # https://github.com/Alexays/Waybar/issues/690
            idle_inhibitor = {
              format = "{icon}";
              format-icons = {
                activated = "󰅶";
                deactivated = "󰾪";
              };
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-Hyprland
            # https://www.nerdfonts.com/cheat-sheet
            "hyprland/workspaces" = {
              show-special = true;
              format = "{icon}";
              format-icons = {
                android = "";
                dropdown = "󰞷";
                game = "󰊴";
                hidden = "";
                music = "󰝚";
                office = "󰈙";
                password = "󰌾";
                pip = "󰹙";
                scratchpad = "";
                steam = "󰓓";
                terminal = "";
                vm = "󰢹";
                wallpaper = "󰏩";
              };
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-Niri
            # https://www.nerdfonts.com/cheat-sheet
            "niri/workspaces" = {
              format = "{icon}";
              format-icons = {
                android = "";
                dropdown = "󰞷";
                game = "󰊴";
                hidden = "";
                music = "󰝚";
                office = "󰈙";
                password = "󰌾";
                pip = "󰹙";
                scratchpad = "";
                steam = "󰓓";
                terminal = "";
                vm = "󰢹";
                wallpaper = "󰏩";
              };
            };

            cava = cava-config;

            # https://github.com/Alexays/Waybar/wiki/Module:-Clock
            clock = {
              # https://fmt.dev/latest/syntax.html#chrono-specs
              format = "{:%a %b %d   %I:%M %p}"; # Mon Jan 01  12:00 AM
              tooltip-format = "{calendar}";
              calendar.format = {
                months = "<span color='#eee8d5'>{}</span>";
                weeks = "<span color='#eee8d5'>{}</span>";
                weekdays = "<span color='#93a1a1'>{}</span>";
                days = "<span color='#586e75'>{}</span>";
                today = "<span color='#eee8d5'>{}</span>";
              };

              # FIXME: Click release event sends to incorrect layer without sleeping
              # https://github.com/hyprwm/Hyprland/issues/1348
              on-click = "${swaync-client} --toggle-panel";
              # on-click-right = easyeffects;
              on-scroll-up = "${swayosd-client} --output-volume raise";
              on-scroll-down = "${swayosd-client} --output-volume lower";
            };

            # https://github.com/bjesus/wttrbar
            "custom/weather" = {
              format = "{}°";
              interval = 60 * 60;
              return-type = "json";

              exec = lib.strings.concatStringsSep " " [
                "${wttrbar}"
                "--ampm"
                "--fahrenheit"
                "--hide-conditions"
                "--main-indicator temp_F"
              ];
            };

            "cava#reverse" =
              cava-config
              // {
                reverse = true;
              };

            "custom/equalizer" = {
              interval = 5;
              on-click = audio;
              exec = pkgs.writeShellScript "equalizer.sh" ''
                ${echo} 󰺢
                ${echo} "$(${cat} ~/.audio)"
                ${echo} "$(${cat} ~/.audio | ${tr} '[:upper:]' '[:lower:]')"
              '';
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-MPRIS
            mpris = {
              format = "{player_icon} {dynamic}";
              format-paused = "{status_icon} {dynamic}";
              dynamic-len = 50;
              dynamic-order = [
                "title"
                "artist"
              ];
              dynamic-separator = " 󰧟 ";
              player-icons.default = "󰎈";
              status-icons.paused = "";
              on-click-middle = ""; # TODO: Close music player
              on-scroll-up = "${swayosd-client} --output-volume raise";
              on-scroll-down = "${swayosd-client} --output-volume lower";
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-WirePlumber
            wireplumber = {
              format = "{icon} {volume}%";
              format-muted = "󰸈";
              format-icons = [
                "󰕿"
                "󰖀"
                "󰕾"
              ];
              on-click = easyeffects;
              on-click-right = "${swayosd-client} --output-volume mute-toggle";
              on-scroll-up = "${swayosd-client} --output-volume raise";
              on-scroll-down = "${swayosd-client} --output-volume lower";
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-Bluetooth
            bluetooth = {
              format-disabled = "󰂲";
              format-off = "󰂲";
              format-on = "󰂯";
              format-connected = "󰂱";
              on-click = blueberry;
              on-click-right = "${bluetoothctl} disconnect";
              on-click-middle = "${rfkill} toggle bluetooth"; # Toggle bluetooth on/off
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-Network
            network = {
              format = "{icon}";
              format-icons = {
                disabled = "";
                disconnected = "";
                ethernet = "󰈀";
                linked = "";
                wifi = [
                  "󰤯"
                  "󰤟"
                  "󰤢"
                  "󰤥"
                  "󰤨"
                ];
              };

              on-click = nm-connection-editor;
              on-click-right = network; # Toggle networking on/off
            };

            # https://github.com/Alexays/Waybar/wiki/Module:-Battery
            "battery" = {
              format = "{icon} {power:.0f}W";
              format-icons = [
                "󰂃"
                "󰁺"
                "󰁻"
                "󰁼"
                "󰁽"
                "󰁾"
                "󰁿"
                "󰂀"
                "󰂁"
                "󰂂"
                "󰁹"
              ];
              interval = 5;
              states = {
                critical = 15;
                warning = 30;
              };

              on-click = power; # Toggle power-saver mode
            };
          };
        };
      };

      # TODO: Convert to writeShellApplication
      ### SCRIPTS ###
      #?? text
      #?? tooltip
      #?? class
      xdg.configFile = {
        # Return inhibit idle status
        "waybar/scripts/inhibitor.sh" = {
          executable = true;
          text = ''
            #! /usr/bin/env ${bash}

            if ${pgrep} systemd-inhibit &> /dev/null; then
              ${echo} 󰅶
              ${echo} Enabled
              ${echo} enabled
            else
              ${echo} 󰾪
              ${echo} Disabled
              ${echo} disabled
            fi
          '';
        };

        # Return tailscale status
        "waybar/scripts/vm.sh" = {
          executable = true;
          text = ''
            #! /usr/bin/env ${bash}

            case "$(virsh domstate myndows)" in
              'running')
                ${echo} 
                ${echo} Online
                ${echo} online;;
              'paused')
                ${echo} 
                ${echo} Paused
                ${echo} paused;;
              'shut off')
                ${echo} 
                ${echo} Offline
                ${echo} offline;;
              *)
                ${echo} 
                ${echo} Unknown
                ${echo} unknown;;
            esac
          '';
        };

        # Return tailscale status
        "waybar/scripts/vpn.sh" = {
          executable = true;
          text = ''
            #! /usr/bin/env ${bash}

            if [[ $(${tailscale} status --json | ${jq} .ExitNodeStatus.Online) == 'true' ]]; then
              ${echo} 󰖂
              ${echo} Connected
              ${echo} connected
            else
              ${echo} 󰖂
              ${echo} Disconnected
              ${echo} disconnected
            fi
          '';
        };
      };
    };
  };
}