{ config, pkgs, lib, ... }:

let
  username = config.defaultUser or "henrov";
  homeDir  = "/home/${username}";
  wallpaperDir = "${homeDir}/Wallpapers";
  scriptDest  = "${homeDir}/Wallpapers/wallpaper-sync-and-set.sh";
in
{
  ############################
  # Systemwide packages
  ############################
  environment.systemPackages = with pkgs; [
    swww
    waypaper
    jq
    rsync
  ];

  ############################
  # Install the script
  ############################
  home.file."Wallpapers/wallpaper-sync-and-set.sh".source = ./assets/Wallpapers/wallpaper-sync-and-set.sh;
  home.file."Wallpapers/wallpaper-sync-and-set.sh".executable = true;

  ############################
  # Systemd user service + timer
  ############################
  systemd.user.services.wallpaperSync = {
    description = "2-way sync wallpapers + set random per workspace";
    serviceConfig.Type = "oneshot";
    serviceConfig.ExecStart = "${scriptDest}";
    serviceConfig.Restart = "on-failure";
  };

  systemd.user.timers.wallpaperSyncTimer = {
    description = "Run wallpaper sync every hour";
    wantedBy = [ "timers.target" ];
    timerConfig.OnCalendar = "hourly";
    timerConfig.Persistent = true;
  };

  ############################
  # Run at login
  ############################
  systemd.user.services.wallpaperSyncLogin = {
    description = "Run wallpaper sync at login";
    serviceConfig.Type = "oneshot";
    serviceConfig.ExecStart = "${scriptDest}";
    install.WantedBy = [ "default.target" ];
  };
}