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|
{ config, lib, pkgs, ... }:
with import <stockholm/lib>;
let
cfg = config.krebs.fetchWallpaper;
out = {
options.krebs.fetchWallpaper = api;
config = lib.mkIf cfg.enable imp;
};
api = {
enable = mkEnableOption "fetch wallpaper";
url = mkOption {
type = types.str;
};
timerConfig = mkOption {
type = types.unspecified;
default = {
OnCalendar = "*:00,10,20,30,40,50";
};
};
# TODO find a better default stateDir
stateDir = mkOption {
type = types.str;
default = "$HOME/wallpaper";
};
display = mkOption {
type = types.str;
default = ":0";
};
unitConfig = mkOption {
type = types.attrsOf types.str;
description = "Extra unit configuration for fetchWallpaper to define conditions and assertions for the unit";
example = literalExample ''
# do not start when running on umts
{ ConditionPathExists = "!/var/run/ppp0.pid"; }
'';
default = {};
};
maxTime = mkOption {
type = types.int;
default = 0;
description = "Time to wait before download is aborted";
};
};
fetchWallpaperScript = pkgs.writeDash "fetchWallpaper" ''
set -euf
mkdir -p ${cfg.stateDir}
cd ${cfg.stateDir}
(curl --max-time ${toString cfg.maxTime} -s -o wallpaper.tmp -z wallpaper ${shell.escape cfg.url} && mv wallpaper.tmp wallpaper) || :
feh --no-fehbg --bg-scale wallpaper
'';
imp = {
systemd.user.timers.fetchWallpaper = {
description = "fetch wallpaper timer";
wantedBy = [ "timers.target" ];
timerConfig = cfg.timerConfig;
};
systemd.user.services.fetchWallpaper = {
description = "fetch wallpaper";
after = [ "graphical.target" ];
wants = [ "graphical.target" ];
wantedBy = [ "default.target" ];
path = with pkgs; [
curl
feh
coreutils
];
environment = {
DISPLAY = cfg.display;
};
restartIfChanged = true;
serviceConfig = {
Type = "simple";
ExecStart = fetchWallpaperScript;
};
unitConfig = cfg.unitConfig;
};
};
in out
|
