{
  service_configs,
  lib,
  ...
}:
let
  textfileDir = "/var/lib/prometheus-node-exporter-textfiles";
in
{
  imports = [
    (lib.serviceMountWithZpool "prometheus" service_configs.zpool_ssds [
      "/var/lib/prometheus"
    ])
    (lib.serviceFilePerms "prometheus" [
      "Z /var/lib/prometheus 0700 prometheus prometheus"
    ])
  ];

  services.prometheus = {
    enable = true;
    port = service_configs.ports.private.prometheus.port;
    listenAddress = "127.0.0.1";
    stateDir = "prometheus";
    retentionTime = "0d"; # 0 disables time-based retention (keep forever)

    exporters = {
      node = {
        enable = true;
        port = service_configs.ports.private.prometheus_node.port;
        listenAddress = "127.0.0.1";
        enabledCollectors = [
          "hwmon"
          "systemd"
          "textfile"
        ];
        extraFlags = [
          "--collector.textfile.directory=${textfileDir}"
        ];
      };

      apcupsd = {
        enable = true;
        port = service_configs.ports.private.prometheus_apcupsd.port;
        listenAddress = "127.0.0.1";
        apcupsdAddress = "127.0.0.1:3551";
      };

      zfs = {
        enable = true;
        port = service_configs.ports.private.prometheus_zfs.port;
        listenAddress = "127.0.0.1";
      };
    };

    scrapeConfigs = [
      {
        job_name = "prometheus";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus.port}" ]; }
        ];
      }
      {
        job_name = "node";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus_node.port}" ]; }
        ];
      }
      {
        job_name = "apcupsd";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus_apcupsd.port}" ]; }
        ];
      }
      {
        job_name = "llama-cpp";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.llama_cpp.port}" ]; }
        ];
      }
      {
        job_name = "jellyfin";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.jellyfin_exporter.port}" ]; }
        ];
      }
      {
        job_name = "qbittorrent";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.qbittorrent_exporter.port}" ]; }
        ];
      }
      {
        job_name = "igpu";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.igpu_exporter.port}" ]; }
        ];
      }
      {
        job_name = "minecraft";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.minecraft_exporter.port}" ]; }
        ];
      }
      {
        job_name = "zfs";
        static_configs = [
          { targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus_zfs.port}" ]; }
        ];
      }
    ];
  };

  systemd.tmpfiles.rules = [
    "d ${textfileDir} 0755 root root -"
  ];
}