feat(wallpaper): add better wallpaper module

modules/programs/bspwm/default.nix

@@ -45,7 +45,7 @@ in
           focus_follows_pointer = true;
         };
         startupPrograms = [
-          "randomWallpaper"
+          "wallpaper -r"
         ];
         extraConfig = builtins.readFile ./bspwmrc;
       };

modules/programs/hyprland/config.nix

@@ -224,5 +224,5 @@ in
   bindm = $mainMod, mouse:272, movewindow
   bindm = $mainMod, mouse:273, resizewindow
 
-  exec-once=randomWallpaper
+  exec-once=wallpaper -r
 ''

modules/programs/sway.nix

@@ -71,7 +71,7 @@ in
               command = "systemctl --user restart waybar";
               always = true;
             }
-            { command = "randomWallpaper"; }
+            { command = "wallpaper -r"; }
           ];
         };
       };

modules/programs/wallpaper/default.nix

@@ -0,0 +1,24 @@
+{ lib, config, pkgs, ... }:
+
+
+with lib;
+let
+  cfg = config.my.programs.wallpaper;
+in
+{
+  options.my.programs.wallpaper.enable = mkEnableOption "wallpaper";
+
+  config = mkIf cfg.enable {
+    environment.systemPackages =
+      let
+        wallpaper = pkgs.writeShellApplication {
+          name = "wallpaper";
+          runtimeInputs = with pkgs; [ findutils coreutils feh hyprland jq fzf viu ];
+          text = builtins.readFile ./wallpaper.sh;
+        };
+      in
+      [
+        wallpaper
+      ];
+  };
+}

modules/programs/wallpaper/wallpaper.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+
+WALLPAPERS_PATH="$HOME/.config/wallpapers"
+WALLPAPERS=$(find "$WALLPAPERS_PATH" -type f,l)
+
+function help() {
+	echo "Usage: wallpaper [OPTIONS]"
+	echo ""
+	echo "Options:"
+	echo "  -h, --help       Show this help message and exit"
+	echo "  -r, --random     Set a random wallpaper"
+	echo "  -s, --set <PATH> Set a wallpaper"
+}
+
+function randomWallpaper() {
+	find ~/.config/wallpapers/ -type f,l | shuf -n 1
+}
+
+function setWallpaper() {
+	case "$DESKTOP_SESSION" in
+	hyprland)
+		hyprctl hyprpaper preload "$1" &>/dev/null
+		hyprctl monitors -j | jq '.[].name' | xargs -I{} -P 0 hyprctl hyprpaper wallpaper '{}',"$1" &>/dev/null
+		hyprctl hyprpaper unload all &>/dev/null
+		;;
+	*)
+		feh --bg-fill "$1" &>/dev/null
+		;;
+	esac
+}
+
+# Parse arguments
+# https://stackoverflow.com/a/14203146
+POSITIONAL=()
+while [[ $# -gt 0 ]]; do
+	key="$1"
+
+	case $key in
+	-h | --help)
+		help
+		exit 0
+		;;
+	-r | --random)
+		WALLPAPER=$(randomWallpaper)
+		shift # past argument
+		;;
+	-s | --set)
+		WALLPAPER="$2"
+		shift # past argument
+		shift # past value
+		;;
+	*)
+		POSITIONAL+=("$1") # save it in an array for later
+		shift              # past argument
+		;;
+	esac
+done
+
+set -- "${POSITIONAL[@]}" # restore positional arguments
+
+if [[ -z ${WALLPAPER+x} ]]; then
+  WALLPAPER=$(echo "$WALLPAPERS" | fzf --preview="viu -sb -h 30 {}" --preview-window=right:70%:wrap)
+fi
+
+if [[ ! -f "$WALLPAPER" ]]; then
+	echo "File not found: $WALLPAPER"
+	exit 1
+fi
+
+setWallpaper "$WALLPAPER"