{
  config,
  lib,
  this,
  ...
}:
with lib;
let
  cfg = config.nixfiles.modules.redis;
in
{
  options.nixfiles.modules.redis.enable = mkEnableOption "Redis";

  config = mkIf cfg.enable {
    ark.directories = [ "/var/lib/redis-default" ];

    services = {
      redis = {
        servers.default = {
          enable = true;
          bind = "127.0.0.1";
          port = 6379;
        };
        vmOverCommit = true;
      };

      prometheus.exporters = {
        redis = {
          enable = true;
          listenAddress = mkDefault this.wireguard.ipv4.address;
          port = mkDefault 9121;
          extraFlags = with config.services.redis.servers.default; [
            "--redis.addr=redis://${bind}:${toString port}"
            "--redis.user=${user}"
          ];
        };
      };
    };
  };
}