{ pkgs, config, lib, self, osConfig, theme, ... }:

let
  cfg = config.my.graphical.wayland.hyprland;
in {
  options.my.graphical.wayland.hyprland = {
    enable = lib.mkEnableOption null;
    tearing = lib.mkEnableOption null;
    hyprcursor = lib.mkEnableOption null // {
      default = true;
    };
    mainMod = lib.mkOption {
      type = lib.types.str;
      default = "SUPER";
    };
    lockBinary = lib.mkOption {
      type = lib.types.str;
    };
    wallpaper = {
      enable = lib.mkEnableOption null // {
        default = true;
      };
      backend = lib.mkOption {
        type = lib.types.enum [ "hyprpaper" "swaybg" ];
        default = "swaybg";
      };
      image = lib.mkOption {
        type = lib.types.pathInStore;
        default = "${self}/assets/snowyMountain.jpg";
      };
    };
  };

  config = lib.mkIf cfg.enable (let
    toggleOption = pkgs.writeShellScriptBin "hypr-toggle-opt" ''
      hyprctl keyword "$1" "$(hyprctl getoption "$1" -j | ${pkgs.jaq}/bin/jaq '1 - .int')"
    '';
    copyOutput = pkgs.writeShellScript "hypr-copy-output" ''
      MONITOR="$(hyprctl monitors -j | ${pkgs.jaq}/bin/jaq -r '.[] | select(.focused).name')"
      grim -o "$MONITOR" - | wl-copy -t image/png
    '';
    copyWindow = pkgs.writeShellScript "hypr-copy-window" ''
      WINDOW="$(hyprctl activewindow -j | ${pkgs.jaq}/bin/jaq -r '.address')"
      grim -w "$WINDOW" - | wl-copy -t image/png
    '';
    winShiftS = with pkgs; writeShellScriptBin "win-shift-s" ''
      FILENAME="/tmp/win-shift-s-$PPID.png"
      MONITOR="$(hyprctl monitors -j | ${_ jaq} -r '.[] | select(.focused)')"
      ${_ grim} -o "$(${_ jaq} -r '.name' <<< "$MONITOR")" "$FILENAME"
      ${_ imv} -f "$FILENAME" & IMV_PROC=$!
      DIMENSIONS="$(${_ slurp} -f '%wx%h+%X+%Y')"
      [ "$?" -eq 0 ] && \
        ${_ imagemagick} "$FILENAME" -crop "$DIMENSIONS" - | \
        ${wl-clipboard}/bin/wl-copy -t image/png
      kill $IMV_PROC
      exec rm "$FILENAME"
    '';
  in {
    home.packages = [
      toggleOption
    ];

    wayland.windowManager.hyprland = let
      c = builtins.mapAttrs (_: t: "0xFF${t}") theme;
      inherit (cfg) mainMod;
      activeBorder = "${c.peach} ${c.mauve} 45deg";
      transparent = "0x00000000";
    in {
      enable = true;
      package = osConfig.programs.hyprland.package;
      settings = {
        exec-once = lib.optional (!osConfig.my.fs.luks.enable) "${pkgs.writeShellScript "start-hyprland" ''
          [ -n "$GREETD_SOCK" ] && ${pkgs.swaylock-effects}/bin/swaylock ${
            lib.optionalString cfg.wallpaper.enable "-i ${cfg.wallpaper.image}"
          } &
        ''}";

        env = [ ]
              ++ lib.optional config.my.graphical.emacs.enable "VISUAL, emacsclient -c";

        monitor = [
          "eDP-1, preferred, 0x0, 1.33"
          ", preferred, auto, 1"

          # Manually reserved area for bar
          ", addreserved, 42, 0, 0, 0"
        ];

        input = {
          kb_layout = "us";
          kb_options = "numpad:mac";
          repeat_delay = 300;
          repeat_rate = 20;
          float_switch_override_focus = 2;

          touchpad = {
            natural_scroll = true;
            scroll_factor = 0.3;
          };
        };

        general = {
          layout = "dwindle";
          allow_tearing = cfg.tearing;
          gaps_in = 5;
          gaps_out = 13;
          border_size = 3;
          "col.active_border" = activeBorder;
          "col.inactive_border" = transparent;
        };

        dwindle = {
          force_split = 2;
          preserve_split = true;
          special_scale_factor = 0.9;
        };

        decoration = {
          rounding = 11;
          dim_special = 0;

          blur = {
            enabled = false;
            size = 8;
            passes = 2;

            ignore_opacity = true;
            xray = true;

            noise = 0;
            contrast = 1;
            brightness = 1;
          };

          shadow = {
            enabled = false;
          };
        };

        group = {
          "col.border_active" = activeBorder;
          "col.border_inactive" = transparent;
          "col.border_locked_active" = c.red;
          "col.border_locked_inactive" = transparent;

          groupbar = {
            render_titles = false;
            height = 3;
            "col.active" = c.green;
            "col.inactive" = transparent;
            "col.locked_active" = c.red;
            "col.locked_inactive" = transparent;            
          };
        };

        animations = {
          enabled = true;

          bezier = [
            "easeInSine, 0.12, 0, 0.39, 0"
            "easeOutSine, 0.61, 1, 0.88, 1"
          ];

          animation = [
	          "windowsIn, true, 2, easeOutSine, slide"
	          "windowsOut, true, 2, easeInSine, slide"
	          "windowsMove, true, 1.5, easeOutSine, slide"

	          "workspaces, true, 1, easeOutSine, slide"
	          "specialWorkspace, true, 3, default, slidevert"

	          "fade, 0"
          ];
        };

        gestures = {
          workspace_swipe = true;
        };

        binds = {
          allow_workspace_cycles = true;
        };

        xwayland = {
          use_nearest_neighbor = false;
          force_zero_scaling = true;
        };

        misc = {
          vrr = 1;

          disable_hyprland_logo = true;
          disable_splash_rendering = true;
          background_color = c.crust;

          disable_autoreload = true;
          focus_on_activate = true;
          animate_manual_resizes = false;
          animate_mouse_windowdragging = false;
          new_window_takes_over_fullscreen = 2;

          enable_swallow = false;
          swallow_regex = "^(foot(client)?|kitty)$";
        };

        workspace = [
          "s[false] w[t1], gapsout:0"
          "s[false] f[1], gapsout:0"
        ];

        windowrulev2 = [
          "noborder, onworkspace:s[false] w[t1], floating:false"
          "norounding, onworkspace:s[false] w[t1], floating:false"
          "noborder, onworkspace:s[false] f[1], floating:false"
          "norounding, onworkspace:s[false] f[1], floating:false"

          "tile, class:^(Aseprite)$"
          "fullscreen, class:^(Baba Is You|ADanceOfFireAndIce)$"
          "float, class:^(EverestSplash-linux)$"
          "float, title:^(emacs-everywhere)$"
          "float, class:^(Eddie)$, title:^$"

          "float, class:^(firefox)$, title:^(Picture-in-Picture)$"
          "pin, class:^(firefox)$, title:^(Picture-in-Picture)$"

          "tile, class:^(Spotify)$, title:^(?!Ozone X11$).*$"
          "float, class:^(Spotify)$, title:^$"
        ] ++ lib.optional cfg.tearing
          "immediate, class:^(ADanceOfFireAndIce|Celeste|hollow_knight\\.x86_64|portal2_linux)$";

        layerrule = [
          "noanim, ^(notifications)$"
        ];

        bind = [
          "${mainMod}, Return, exec, foot"
          "${mainMod}, C, killactive,"
          "${mainMod} SHIFT, C, exec, hyprctl activewindow -j | ${pkgs.jaq}/bin/jaq -r '.pid' | xargs kill -9"
          "${mainMod}, E, exec, nautilus"
          "${mainMod}, M, exec, emacsclient -c"
          "${mainMod} SHIFT, M, exec, emacsclient -e '(emacs-everywhere)'"
          "${mainMod} SHIFT, Return, togglefloating,"

          "${mainMod}, Space, fullscreen, 1"
          "${mainMod} SHIFT, Space, fullscreen, 0"

          "${mainMod}, I, exec, dunstctl action"
          "${mainMod} SHIFT, I, exec, dunstctl context"
          "${mainMod} ALT, I, exec, dunstctl history-pop"
          "${mainMod} CTRL, I, exec, dunstctl close"

          "${mainMod}, Semicolon, exec, killall fuzzel || fuzzel"

          "${mainMod}, Y, pin,"

          # Groups
          "${mainMod}, F, changegroupactive, f"
          "${mainMod} SHIFT, F, togglegroup,"
          "${mainMod} CTRL, F, lockactivegroup, toggle"

          # Directions
          "${mainMod}, Period, layoutmsg, preselect r"
          "${mainMod}, Comma, layoutmsg, preselect d"
          "${mainMod}, S, layoutmsg, togglesplit"

          # Moving windows (with groups)
          "${mainMod} SHIFT, left,  movewindoworgroup, l"
          "${mainMod} SHIFT, right, movewindoworgroup, r"
          "${mainMod} SHIFT, up,    movewindoworgroup, u"
          "${mainMod} SHIFT, down,  movewindoworgroup, d"
          "${mainMod} SHIFT, H, movewindoworgroup, l"
          "${mainMod} SHIFT, L, movewindoworgroup, r"
          "${mainMod} SHIFT, K, movewindoworgroup, u"
          "${mainMod} SHIFT, J, movewindoworgroup, d"

          # Moving windows (without groups)
          "${mainMod} ALT, left,  movewindow, l"
          "${mainMod} ALT, right, movewindow, r"
          "${mainMod} ALT, up,    movewindow, u"
          "${mainMod} ALT, down,  movewindow, d"
          "${mainMod} ALT, H, movewindow, l"
          "${mainMod} ALT, L, movewindow, r"
          "${mainMod} ALT, K, movewindow, u"
          "${mainMod} ALT, J, movewindow, d"

          # Workspaces
          "${mainMod} CTRL, P, focusworkspaceoncurrentmonitor, previous"
          "${mainMod} CTRL, N, focusworkspaceoncurrentmonitor, empty"
          "${mainMod} CTRL SHIFT, P, movetoworkspace, previous"
          "${mainMod} CTRL SHIFT, N, movetoworkspace, empty"

          # Screenshot
          ", Print, exec, ${copyOutput}"
          "ALT, Print, exec, ${copyWindow}"
          "${mainMod} SHIFT, S, exec, grim -g \"$(slurp)\" - | wl-copy -t image/png"

          # Move focus
          "${mainMod}, left,   movefocus, l"
          "${mainMod}, right,  movefocus, r"
          "${mainMod}, up,     movefocus, u"
          "${mainMod}, down,   movefocus, d"
          "${mainMod}, H, movefocus, l"
          "${mainMod}, L, movefocus, r"
          "${mainMod}, K, movefocus, u"
          "${mainMod}, J, movefocus, d"

          # Switch workspaces with mainMod + [1-9]
          "${mainMod}, 1, focusworkspaceoncurrentmonitor, 1"
          "${mainMod}, 2, focusworkspaceoncurrentmonitor, 2"
          "${mainMod}, 3, focusworkspaceoncurrentmonitor, 3"
          "${mainMod}, 4, focusworkspaceoncurrentmonitor, 4"
          "${mainMod}, 5, focusworkspaceoncurrentmonitor, 5"
          "${mainMod}, 6, focusworkspaceoncurrentmonitor, 6"
          "${mainMod}, 7, focusworkspaceoncurrentmonitor, 7"
          "${mainMod}, 8, focusworkspaceoncurrentmonitor, 8"
          "${mainMod}, 9, focusworkspaceoncurrentmonitor, 9"

          # Switch workspaces with mainMod + N/P/O
          "${mainMod}, N, focusworkspaceoncurrentmonitor, e+1"
          "${mainMod}, P, focusworkspaceoncurrentmonitor, e-1"
          "${mainMod} SHIFT, N, movetoworkspace, e+1"
          "${mainMod} SHIFT, P, movetoworkspace, e-1"

          # Move active window to a workspace with mainMod + SHIFT + [1-9]
          "${mainMod} SHIFT, 1, movetoworkspace, 1"
          "${mainMod} SHIFT, 2, movetoworkspace, 2"
          "${mainMod} SHIFT, 3, movetoworkspace, 3"
          "${mainMod} SHIFT, 4, movetoworkspace, 4"
          "${mainMod} SHIFT, 5, movetoworkspace, 5"
          "${mainMod} SHIFT, 6, movetoworkspace, 6"
          "${mainMod} SHIFT, 7, movetoworkspace, 7"
          "${mainMod} SHIFT, 8, movetoworkspace, 8"
          "${mainMod} SHIFT, 9, movetoworkspace, 9"

          # Scroll through existing workspaces with mainMod + scroll/side buttons
          "${mainMod}, mouse_down, focusworkspaceoncurrentmonitor, e-1"
          "${mainMod}, mouse_up,   focusworkspaceoncurrentmonitor, e+1"
          "${mainMod}, mouse:275, focusworkspaceoncurrentmonitor, e-1"
          "${mainMod}, mouse:276, focusworkspaceoncurrentmonitor, e+1"

          # Scratchpads
          "${mainMod} SHIFT, 0, movetoworkspace, special:a"
          "${mainMod}, 0, togglespecialworkspace, a"
          "${mainMod} SHIFT, minus, movetoworkspace, special:b"
          "${mainMod}, minus, togglespecialworkspace, b"
          "${mainMod} SHIFT, equal, movetoworkspace, special:c"
          "${mainMod}, equal, togglespecialworkspace, c"

          "${mainMod}, Q, exec, ${cfg.lockBinary}"
          "${mainMod}, T, exec, ${toggleOption}/bin/hypr-toggle-opt input:touchpad:disable_while_typing"
        ];

        bindl = [
          "${mainMod} SHIFT, Q, exit,"

          ", XF86AudioMute, exec, dunst-volume set-mute toggle"
        ];

        binde = [
          # Resize windows
          "${mainMod} CTRL ALT, left,  resizeactive, -10 0"
          "${mainMod} CTRL ALT, right, resizeactive, 10 0"
          "${mainMod} CTRL ALT, up,    resizeactive, 0 -10"
          "${mainMod} CTRL ALT, down,  resizeactive, 0 10"
          "${mainMod} CTRL ALT, H, resizeactive, -10 0"
          "${mainMod} CTRL ALT, L, resizeactive, 10 0"
          "${mainMod} CTRL ALT, K, resizeactive, 0 -10"
          "${mainMod} CTRL ALT, J, resizeactive, 0 10"

          # Move floating windows
          "${mainMod} CTRL, left,  moveactive, -50 0"
          "${mainMod} CTRL, right, moveactive, 50 0"
          "${mainMod} CTRL, up,    moveactive, 0 -50"
          "${mainMod} CTRL, down,  moveactive, 0 50"
          "${mainMod} CTRL, H, moveactive, -50 0"
          "${mainMod} CTRL, L, moveactive, 50 0"
          "${mainMod} CTRL, K, moveactive, 0 -50"
          "${mainMod} CTRL, J, moveactive, 0 50"
        ];

        bindm = [
          # Move/resize windows with mainMod + LMB/RMB and dragging
          "${mainMod}, mouse:272, movewindow"
          "${mainMod}, mouse:273, resizewindow"
        ];

        bindel = [
          # Media keys
          ", XF86AudioRaiseVolume, exec, dunst-volume set-volume 5%+"
          ", XF86AudioLowerVolume, exec, dunst-volume set-volume 5%-"

          ", XF86MonBrightnessDown, exec, dunst-brightness 5%+"
          ", XF86MonBrightnessUp,   exec, dunst-brightness 5%-"
        ];
      };

      extraConfig = ''
        # Passthrough mode
        bind = ${mainMod}, Escape, submap, passthrough
        submap = passthrough
        bind = ${mainMod}, Escape, submap, reset
        submap = reset

        # OBS
        bind = ${mainMod} CTRL, O, submap, OBS
        submap = OBS
        bind = , Space, pass, ^(com\.obsproject\.Studio)$
        bind = , P, pass, ^(com\.obsproject\.Studio)$
        bind = , Escape, submap, reset
        bind = ${mainMod}, Escape, submap, reset
        submap = reset
      '';
    };

    systemd.user.services = lib.mkIf cfg.wallpaper.enable {
      hyprpaper = lib.mkIf (cfg.wallpaper.backend == "hyprpaper") {
        Unit = {
          Description = "Background wallpaper image via hyprpaper";
          After = "hyprland-session.target";
        };
        Service = {
          ExecStart = let
            hyprpaperConfig = pkgs.writeText "hyprpaper.conf" ''
              preload = ${cfg.wallpaper.image}
              wallpaper = ,${cfg.wallpaper.image}
              ipc = off
              splash = off
            '';
          in "${pkgs.hyprpaper}/bin/hyprpaper -c ${hyprpaperConfig}";
        };
        Install = {
          WantedBy = [ "hyprland-session.target" ];
        };
      };

      swaybg = lib.mkIf (cfg.wallpaper.backend == "swaybg") {
        Unit = {
          Description = "Background wallpaper image via swaybg";
          After = "hyprland-session.target";
        };
        Service = {
          ExecStart = "${pkgs.swaybg}/bin/swaybg -i ${cfg.wallpaper.image} -m fill -o '*'";
        };
        Install = {
          WantedBy = [ "hyprland-session.target" ];
        };
      };
    };
  });
}