# settings/hyprland.nix
{ config, pkgs, lib, inputs, ... }:
let
  isMacbook = config.networking.hostName == "FredOS-Macbook";
  isGaming  = !isMacbook;

in
{
  config = lib.mkIf (lib.elem config.networking.hostName [ "FredOS-Gaming" "FredOS-Macbook" ]) {
    programs.hyprland = {
      enable = true;
      xwayland.enable = true;
    };

    xdg.portal = {
      enable = true;
      # xdg-desktop-portal-hyprland is registered automatically by
      # programs.hyprland.portalPackage; listing it here too produced a
      # duplicate user-unit symlink during nixos-rebuild.
      extraPortals = with pkgs; [
        xdg-desktop-portal-gtk
      ];
      config.hyprland.default = [ "hyprland" "gtk" ];
    };

    security.polkit.enable = true;

    # Polkit GUI agent for GUI sudo prompts under Hyprland
    systemd.user.services.polkit-gnome-authentication-agent-1 = {
      description = "polkit-gnome-authentication-agent-1";
      wantedBy = [ "graphical-session.target" ];
      partOf = [ "graphical-session.target" ];
      after = [ "graphical-session.target" ];
      serviceConfig = {
        Type = "simple";
        ExecStart = "${pkgs.polkit_gnome}/libexec/polkit-gnome-authentication-agent-1";
        Restart = "on-failure";
      };
    };

    environment.systemPackages = with pkgs; [
      ghostty
      libnotify
      grim
      slurp
      wl-clipboard
      cliphist
      brightnessctl
      swayosd
      playerctl
      hyprpaper
      hyprlock
      hypridle
      hyprshot
      networkmanagerapplet
      pavucontrol
      polkit_gnome
      zenity
      libcanberra-gtk3
    ];

    home-manager.users.fred = { config, lib, pkgs, inputs, ... }:
    let
      c    = config.lib.stylix.colors;
      rgb  = hex: "rgb(${hex})";
      rgba = hex: a: "rgba(${hex}${a})";
    in {
      # Stylix's Hyprland target injects settings.{general,decoration,group,misc}
      # as top-level keys, which render as hl.general()/hl.decoration()/… in Lua
      # mode — functions that don't exist.  Disable it and absorb the colours
      # into settings.config below.
      stylix.targets.hyprland.enable = false;

      # The disabled Hyprland target would normally enable this; do it
      # manually.  Stylix's hyprpaper target (auto-enabled) still handles
      # preload/wallpaper settings.
      services.hyprpaper.enable = true;

      wayland.windowManager.hyprland = {
        enable = true;
        configType = "lua";
        systemd.variables = [ "--all" ];

        settings = {
          # hl.config({...}) — all static named-section configuration.
          # monitor is set per-host in hosts/FredOS-{Gaming,Macbook}.nix.
          config = {
            general = {
              gaps_in = 6;
              # 6px of the outer gap is occupied by the quickshell screen
              # frame (Theme.frameWidth) — 18 on framed sides keeps the
              # visible frame↔window gap equal to the inter-window gap (12).
              # Top stays 12: the bar reserves its own space.
              gaps_out = { top = 12; right = 18; bottom = 18; left = 18; };
              border_size = 2;
              layout = "dwindle";
              resize_on_border = true;
              "col.active_border"   = rgb c.base0D;
              "col.inactive_border" = rgb c.base03;
            };

            decoration = {
              rounding = 8;
              blur = {
                enabled = true;
                size = 1;
                passes = 3;
              };
              shadow.color = rgba c.base00 "99";
            };

            group = {
              "col.border_active"        = rgb c.base0D;
              "col.border_inactive"      = rgb c.base03;
              "col.border_locked_active" = rgb c.base0C;
              groupbar = {
                text_color    = rgb c.base05;
                "col.active"  = rgb c.base0D;
                "col.inactive" = rgb c.base03;
              };
            };

            render = {
              direct_scanout = false;
            };

            animations = {
              enabled = true;
            };

            input = {
              kb_layout = "gb,no";
              kb_options = "grp:alt_shift_toggle";
              follow_mouse = 1;
              accel_profile = "flat";
              sensitivity = 0;
            } // lib.optionalAttrs isMacbook {
              touchpad = {
                tap_to_click = true;
                tap_button_map = "lrm";
                natural_scroll = true;
              };
            };

            cursor = {
              no_warps = true;
            };

            dwindle = {
              preserve_split = true;
            };

            misc = {
              disable_hyprland_logo = true;
              disable_splash_rendering = true;
              # Apps demanding attention don't get to yank focus — they'll
              # show as urgent in the bar instead.
              focus_on_activate = false;
              vrr = 2;
              background_color = rgb c.base00;
            };

            # vfr moved from misc: to debug: in 0.55.0
            debug = {
              vfr = false; # keep compositor ticking, don't idle between frames
              disable_logs = false;
            };
          };
        };

        extraConfig =
          let
            kbdBrightUp = pkgs.writeShellScript "kbd-bright-up" ''
              ${pkgs.brightnessctl}/bin/brightnessctl -d smc::kbd_backlight set +10%
              brightness=$(${pkgs.brightnessctl}/bin/brightnessctl -d smc::kbd_backlight get)
              max=$(${pkgs.brightnessctl}/bin/brightnessctl -d smc::kbd_backlight max)
              echo $(( brightness * 100 / max )) > "$XDG_RUNTIME_DIR/wob.fifo"
            '';
            kbdBrightDown = pkgs.writeShellScript "kbd-bright-down" ''
              ${pkgs.brightnessctl}/bin/brightnessctl -d smc::kbd_backlight set 10%-
              brightness=$(${pkgs.brightnessctl}/bin/brightnessctl -d smc::kbd_backlight get)
              max=$(${pkgs.brightnessctl}/bin/brightnessctl -d smc::kbd_backlight max)
              echo $(( brightness * 100 / max )) > "$XDG_RUNTIME_DIR/wob.fifo"
            '';
          in
          ''
            -- Environment
            hl.env("XCURSOR_THEME", "Bibata-Modern-Ice")
            hl.env("XCURSOR_SIZE", "24")
            hl.env("HYPRCURSOR_THEME", "Bibata-Modern-Ice")
            hl.env("HYPRCURSOR_SIZE", "24")
            hl.env("ELECTRON_OZONE_PLATFORM_HINT", "wayland")
            hl.env("MOZ_ENABLE_WAYLAND", "1")
            hl.env("QT_QPA_PLATFORM", "wayland;xcb")
            hl.env("SDL_VIDEODRIVER", "wayland")
            hl.env("_JAVA_AWT_WM_NONREPARENTING", "1")
            ${lib.optionalString isGaming ''
            -- GPU pinning — Navi 22 is card1 on the dual-GPU gaming box.
            hl.env("AQ_DRM_DEVICES", "/dev/dri/card1")
            hl.env("DRI_PRIME", "pci-0000_03_00_0")
            ''}

            -- Layer rules: blur behind bar and toasts
            hl.layer_rule({ match = { namespace = "quickshell-bar" }, blur = true, ignore_alpha = 0.3 })

            -- Startup
            hl.on("hyprland.start", function()
              -- Ensure hyprland-session.target starts even if HM's
              -- dbus-update-activation-environment chain fails upstream.
              hl.exec_cmd("systemctl --user start hyprland-session.target")
              -- mako removed; notifications handled by quickshell

              hl.exec_cmd("wl-paste --type text --watch cliphist store")
              hl.exec_cmd("wl-paste --type image --watch cliphist store")
              hl.exec_cmd("hyprctl setcursor Bibata-Modern-Ice 24")
              hl.exec_cmd("swayosd-server")
              ${lib.optionalString isMacbook ''hl.exec_cmd("hypridle")''}
            end)

            -- Animation curve and definitions
            hl.curve("snap", { type = "bezier", points = { {0.05, 0.9}, {0.1, 1.0} } })
            hl.animation({ leaf = "windows",    enabled = true, speed = 1, bezier = "snap" })
            hl.animation({ leaf = "windowsOut", enabled = true, speed = 1, bezier = "snap", style = "popin 80%" })
            hl.animation({ leaf = "layers",     enabled = true, speed = 1, bezier = "snap" })
            hl.animation({ leaf = "border",     enabled = true, speed = 2, bezier = "default" })
            hl.animation({ leaf = "fade",       enabled = true, speed = 1, bezier = "default" })
            hl.animation({ leaf = "workspaces", enabled = true, speed = 1, bezier = "snap" })

            -- Window rules
            -- Battle.net tray icon leaks as a tiny floating XWayland window.
            hl.window_rule({
              match = { class = "steam_app_0", title = "^$", float = true },
              workspace = "special silent",
            })

            -- Tiny Terraces opens floating by default; force it to tile.
            hl.window_rule({
              match = { class = "steam_app_3136330" },
              tile = true,
            })

            -- Binds
            local mod = "SUPER"

            -- Apps
            hl.bind(mod .. " + T", hl.dsp.exec_cmd("ghostty"))
            hl.bind(mod .. " + E", hl.dsp.exec_cmd("nemo"))
            hl.bind(mod .. " + R", hl.dsp.exec_cmd("${pkgs.quickshell}/bin/qs ipc call launcher toggle"))
            hl.bind(mod .. " + Q", hl.dsp.window.close())
            hl.bind(mod .. " + SHIFT + E", hl.dsp.exit())

            -- Floating / layout
            hl.bind(mod .. " + V", hl.dsp.window.float({ action = "toggle" }))
            hl.bind(mod .. " + F", hl.dsp.window.fullscreen())
            hl.bind(mod .. " + P", hl.dsp.window.pseudo())
            hl.bind(mod .. " + S", hl.dsp.layout("togglesplit"))

            -- Focus
            hl.bind(mod .. " + left",  hl.dsp.focus({ direction = "left" }))
            hl.bind(mod .. " + right", hl.dsp.focus({ direction = "right" }))
            hl.bind(mod .. " + up",    hl.dsp.focus({ direction = "up" }))
            hl.bind(mod .. " + down",  hl.dsp.focus({ direction = "down" }))
            hl.bind(mod .. " + H",     hl.dsp.focus({ direction = "left" }))
            hl.bind(mod .. " + K",     hl.dsp.focus({ direction = "up" }))
            hl.bind(mod .. " + J",     hl.dsp.focus({ direction = "down" }))

            -- Power menu (quickshell launcher in power mode)
            hl.bind(mod .. " + L", hl.dsp.exec_cmd("${pkgs.quickshell}/bin/qs ipc call launcher powermenu"))

            -- Move windows
            hl.bind(mod .. " + SHIFT + left",  hl.dsp.window.move({ direction = "left" }))
            hl.bind(mod .. " + SHIFT + right", hl.dsp.window.move({ direction = "right" }))
            hl.bind(mod .. " + SHIFT + up",    hl.dsp.window.move({ direction = "up" }))
            hl.bind(mod .. " + SHIFT + down",  hl.dsp.window.move({ direction = "down" }))

            -- Workspaces
            for i = 0, 9 do
              local workspace_id = tostring((i == 0) and 10 or i)
              hl.bind(mod .. " + " .. i, hl.dsp.focus({ workspace = workspace_id }))
              hl.bind(mod .. " + SHIFT + " .. i, hl.dsp.window.move({ workspace = workspace_id, follow = false }))
            end

            -- Screenshots — Shift+Super+S matches GNOME binding
            -- Pin/unpin quickshell's focus grab around the region select so an
            -- open menu survives slurp's input grab (no-ops if qs isn't up).
            hl.bind(mod .. " + SHIFT + S", hl.dsp.exec_cmd("sh -c 'qs ipc call screenshot pin; hyprshot -m region; qs ipc call screenshot unpin'"))
            hl.bind("Print",               hl.dsp.exec_cmd("hyprshot -m output"))

            -- Settings shortcut — Super+I matches GNOME binding
            hl.bind(mod .. " + I", hl.dsp.exec_cmd("pavucontrol"))

            -- Custom shortcuts
            hl.bind(mod .. " + Z", hl.dsp.exec_cmd("zen-beta"))

            -- Mouse window manipulation
            hl.bind(mod .. " + mouse:272", hl.dsp.window.drag(),   { mouse = true })
            hl.bind(mod .. " + mouse:273", hl.dsp.window.resize(), { mouse = true })

            -- Volume / brightness (repeating)
            hl.bind("XF86AudioRaiseVolume",  hl.dsp.exec_cmd("swayosd-client --output-volume raise"),       { repeating = true })
            hl.bind("XF86AudioLowerVolume",  hl.dsp.exec_cmd("swayosd-client --output-volume lower"),       { repeating = true })
            hl.bind("XF86AudioMute",         hl.dsp.exec_cmd("swayosd-client --output-volume mute-toggle"), { repeating = true })
            hl.bind("XF86MonBrightnessUp",   hl.dsp.exec_cmd("swayosd-client --brightness raise"),          { repeating = true })
            hl.bind("XF86MonBrightnessDown", hl.dsp.exec_cmd("swayosd-client --brightness lower"),          { repeating = true })
            ${lib.optionalString isMacbook ''
            hl.bind("XF86KbdBrightnessUp",   hl.dsp.exec_cmd("${kbdBrightUp}"),   { repeating = true })
            hl.bind("XF86KbdBrightnessDown", hl.dsp.exec_cmd("${kbdBrightDown}"), { repeating = true })
            ''}

            -- Media keys (locked — work through lockscreen)
            hl.bind("XF86AudioPlay", hl.dsp.exec_cmd("playerctl play-pause"), { locked = true })
            hl.bind("XF86AudioNext", hl.dsp.exec_cmd("playerctl next"),        { locked = true })
            hl.bind("XF86AudioPrev", hl.dsp.exec_cmd("playerctl previous"),    { locked = true })
          '';
      };

      programs.hyprlock = {
        enable = true;
        settings = {
          general = {
            grace = 5;
            hide_cursor = true;
          };
          background = {
            blur_passes = 3;
            blur_size = 8;
            brightness = 0.6;
          };
          input-field = {
            size = "280, 44";
            outline_thickness = 2;
            dots_size = 0.25;
            dots_spacing = 0.2;
            dots_center = true;
            fade_on_empty = true;
            fade_timeout = 3000;
            placeholder_text = "";
            fail_text = "";
            position = "0, -40";
            halign = "center";
            valign = "center";
            rounding = 8;
          };
          label = [
            {
              text = "$TIME";
              color = "rgb(${c.base05})";
              font_size = 72;
              font_family = "Inter";
              position = "0, 120";
              halign = "center";
              valign = "center";
            }
            {
              text = "cmd[update:60000] date +'%A, %d %B'";
              color = "rgb(${c.base04})";
              font_size = 16;
              font_family = "Inter";
              position = "0, 60";
              halign = "center";
              valign = "center";
            }
          ];
        };
      };

      services.hypridle = lib.mkIf isMacbook {
        enable = true;
        settings = {
          general = {
            lock_cmd         = "pidof hyprlock || hyprlock";
            before_sleep_cmd = "loginctl lock-session";
            after_sleep_cmd  = "hyprctl dispatch dpms on";
          };
          listener = [
            {
              timeout    = 300;   # 5 min — lock
              on-timeout = "loginctl lock-session";
            }
            {
              timeout    = 420;   # 7 min — display off
              on-timeout = "hyprctl dispatch dpms off";
              on-resume  = "hyprctl dispatch dpms on";
            }
            {
              timeout    = 600;   # 10 min — suspend
              on-timeout = "systemctl suspend";
            }
          ];
        };
      };

      # Scope all HM Wayland services (hyprpaper, etc.) to the
      # Hyprland session so they don't crash-loop in a GNOME session.
      wayland.systemd.target = "hyprland-session.target";

    };
  };
}