nixpkgs/nixos/modules/services/mail/rss2email.nix
2024-09-15 10:43:49 +02:00

134 lines
3.4 KiB
Nix

{ config, lib, pkgs, ... }:
let
cfg = config.services.rss2email;
in {
###### interface
options = {
services.rss2email = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = "Whether to enable rss2email.";
};
to = lib.mkOption {
type = lib.types.str;
description = "Mail address to which to send emails";
};
interval = lib.mkOption {
type = lib.types.str;
default = "12h";
description = "How often to check the feeds, in systemd interval format";
};
config = lib.mkOption {
type = with lib.types; attrsOf (oneOf [ str int bool ]);
default = {};
description = ''
The configuration to give rss2email.
Default will use system-wide `sendmail` to send the
email. This is rss2email's default when running
`r2e new`.
This set contains key-value associations that will be set in the
`[DEFAULT]` block along with the
`to` parameter.
See `man r2e` for more information on which
parameters are accepted.
'';
};
feeds = lib.mkOption {
description = "The feeds to watch.";
type = lib.types.attrsOf (lib.types.submodule {
options = {
url = lib.mkOption {
type = lib.types.str;
description = "The URL at which to fetch the feed.";
};
to = lib.mkOption {
type = with lib.types; nullOr str;
default = null;
description = ''
Email address to which to send feed items.
If `null`, this will not be set in the
configuration file, and rss2email will make it default to
`rss2email.to`.
'';
};
};
});
};
};
};
###### implementation
config = lib.mkIf cfg.enable {
users.groups = {
rss2email.gid = config.ids.gids.rss2email;
};
users.users = {
rss2email = {
description = "rss2email user";
uid = config.ids.uids.rss2email;
group = "rss2email";
};
};
environment.systemPackages = with pkgs; [ rss2email ];
services.rss2email.config.to = cfg.to;
systemd.tmpfiles.settings."10-rss2email"."/var/rss2email".d = {
user = "rss2email";
group = "rss2email";
mode = "0700";
};
systemd.services.rss2email = let
conf = pkgs.writeText "rss2email.cfg" (lib.generators.toINI {} ({
DEFAULT = cfg.config;
} // lib.mapAttrs' (name: feed: lib.nameValuePair "feed.${name}" (
{ inherit (feed) url; } //
lib.optionalAttrs (feed.to != null) { inherit (feed) to; }
)) cfg.feeds
));
in
{
preStart = ''
if [ ! -f /var/rss2email/db.json ]; then
echo '{"version":2,"feeds":[]}' > /var/rss2email/db.json
fi
'';
path = [ pkgs.system-sendmail ];
serviceConfig = {
ExecStart =
"${pkgs.rss2email}/bin/r2e -c ${conf} -d /var/rss2email/db.json run";
User = "rss2email";
};
};
systemd.timers.rss2email = {
partOf = [ "rss2email.service" ];
wantedBy = [ "timers.target" ];
timerConfig.OnBootSec = "0";
timerConfig.OnUnitActiveSec = cfg.interval;
};
};
meta.maintainers = with lib.maintainers; [ ekleog ];
}