configuration.nix/home/scripts.nix

{ osConfig, pkgs, ... }:
{
  xdg.configFile = {
    "scripts/chpaper.sh" = {
      text = ''
        #!/bin/sh

        set -eu

        DIR="''${HOME}/.local/share/wallpapers"

        random_paper() {
          find -L "''${DIR}"/ -type f -regextype egrep -regex ".*\.(jpe?g|png)$" | shuf -n1
        }

        SWAYSOCK="''${SWAYSOCK:-""}"
        if [ -z "''${SWAYSOCK}" ] ; then
          SWAYSOCK="$(find /run/user/"$(id -u)"/ -name "sway-ipc.$(id -u).*.sock")"
          export SWAYSOCK
        fi
        ${pkgs.imagemagick}/bin/convert "$(random_paper)" /tmp/wallpaper.jpg && swaymsg "output * bg '/tmp/wallpaper.jpg' fill" &
        ${pkgs.imagemagick}/bin/convert "$(random_paper)" /tmp/lockpaper.jpg
      '';
      executable = true;
    };
  };
}