{ config, lib, pkgs, ... }:
let
  relabelHosts = [
    { source_labels = ["__address__"];
      target_label = "instance";
      regex = "localhost(:[0-9]+)?";
      replacement = "vidhar";
    }
    { source_labels = ["__address__"];
      target_label = "instance";
      regex = "10.141.1.2(:[0-9]+)?";
      replacement = "switch01";
    }
  ];
in {
  config = {
    services.prometheus = {
      enable = true;

      exporters = {
        node.enable = true;
        smartctl = {
          enable = true;
          devices = map (dev: "/dev/disk/by-path/${dev}") [
            "pci-0000:00:1f.2-ata-1"
            "pci-0000:00:1f.2-ata-3"
            "pci-0000:00:1f.2-ata-4"
            "pci-0000:00:1f.2-ata-5"
            "pci-0000:00:1f.2-ata-6"
            "pci-0000:02:00.0-nvme-1"
            "pci-0000:05:00.0-sas-phy0-lun-0"
            "pci-0000:05:00.0-sas-phy1-lun-0"
            "pci-0000:06:00.0-nvme-1"
          ];
        };
        snmp = {
          enable = true;
          configuration = {
            default = { auth = { community = "public"; }; version = 2; };
          };
        };
        unbound = {
          enable = true;
          controlInterface = "/run/unbound/unbound.ctl";
          group = config.services.unbound.group;
        };
        wireguard.enable = true;
      };

      scrapeConfigs = [
        { job_name = "prometheus";
          static_configs = [
            { targets = ["localhost:${toString config.services.prometheus.port}"]; }
          ];
          relabel_configs = relabelHosts;
        }
        { job_name = "node";
          static_configs = [
            { targets = ["localhost:${toString config.services.prometheus.exporters.node.port}"]; }
          ];
          relabel_configs = relabelHosts;
        }
        { job_name = "smartctl";
          static_configs = [
            { targets = ["localhost:${toString config.services.prometheus.exporters.smartctl.port}"]; }
          ];
          relabel_configs = relabelHosts;
        }
        { job_name = "snmp";
          static_configs = [
            { targets = ["10.141.1.2"]; }
          ];
          metrics_path = "/snmp";
          relabel_configs = [
            { source_labels = ["__address__"];
              target_label = "__param_target";
            }
            { source_labels = ["__param_target"];
              target_label = "instance";
            }
            { replacement = "localhost:${toString config.services.prometheus.exporters.snmp.port}";
              target_label = "__address__";
            }
          ] ++ relabelHosts;
        }
        { job_name = "zte";
          static_configs = [
            { targets = ["localhost:9900"]; }
          ];
          relabel_configs = [
            { replacement = "telekom";
              target_label = "instance";
            }
          ];
        }
        { job_name = "unbound";
          static_configs = [
            { targets = ["localhost:${toString config.services.prometheus.exporters.unbound.port}"]; }
          ];
          relabel_configs = relabelHosts;
        }
        { job_name = "wireguard";
          static_configs = [
            { targets = ["localhost:${toString config.services.prometheus.exporters.wireguard.port}"]; }
          ];
          relabel_configs = relabelHosts;
        }
        { job_name = "corerad";
          static_configs = [
            { targets = ["localhost:9430"]; }
          ];
          relabel_configs = relabelHosts;
        }
      ];
    };
    users.users.${config.services.prometheus.exporters.unbound.user} = {
      description = "Prometheus unbound exporter service user";
      isSystemUser = true;
      group = config.services.unbound.group;
    };
    systemd.services."prometheus-unbound-exporter".serviceConfig = {
      DynamicUser = false;
    };

    systemd.services."prometheus-zte-exporter@10.141.1.3" = {
      wantedBy = [ "multi-user.target" ];
      after = [ "network.target" ];
      serviceConfig = {
        Restart = "always";
        PrivateTmp = true;
        WorkingDirectory = "/tmp";
        DynamicUser = true;
        CapabilityBoundingSet = [""];
        DeviceAllow = [""];
        LockPersonality = true;
        MemoryDenyWriteExecute = true;
        NoNewPrivileges = true;
        PrivateDevices = true;
        ProtectClock = true;
        ProtectControlGroups = true;
        ProtectHome = true;
        ProtectHostname = true;
        ProtectKernelLogs = true;
        ProtectKernelModules = true;
        ProtectKernelTunables = true;
        ProtectSystem = "strict";
        RemoveIPC = true;
        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
        RestrictNamespaces = true;
        RestrictRealtime = true;
        RestrictSUIDSGID = true;
        SystemCallArchitectures = "native";
        UMask = "0077";

        Type = "simple";
        ExecStart = "${pkgs.zte-prometheus-exporter}/bin/zte-prometheus-exporter";
        Environment = "ZTE_BASEURL=http://%I ZTE_HOSTNAME=localhost ZTE_PORT=9900";
        EnvironmentFile = config.sops.secrets."zte_10.141.1.3".path;
      };
    };
    sops.secrets."zte_10.141.1.3" = {
      format = "binary";
      sopsFile = ./zte_10.141.1.3;
    };
  };
}