{ critical, warning, ... }:

{
  alerts.SwitchPromiscuousChange = {
    expr = ''
      changes(last_over_time(ifPromiscuousMode[1h])[5m]) > 0
    '';
    for = "0m";
    labels = warning;
    annotations = {
      Interface = "{{ $labels.ifName }}";
      Alias = "{{ $labels.ifAlias }}";
    };
  };

  alerts.SwitchInErrors = {
    expr = ''
      rate(ifInErrors[15m]) / (
        rate(ifInUcastPkts[15m])
        + rate(ifInNUcastPkts[15m])
        + rate(ifInErrors[15m])
      ) > 0.0001
    '';
    for = "15m";
    labels = warning;
    annotations = {
      ErrorRate = "{{ $value | humanizePercentage }}";
      Interface = "{{ $labels.ifName }}";
      Alias = "{{ $labels.ifAlias }}";
    };
  };

  alerts.SwitchOutErrors = {
    expr = ''
      rate(ifOutErrors[15m]) / (
        rate(ifOutUcastPkts[15m])
        + rate(ifOutNUcastPkts[15m])
        + rate(ifOutErrors[15m])
      ) > 0.0001
    '';
    for = "15m";
    labels = warning;
    annotations = {
      ErrorRate = "{{ $value | humanizePercentage }}";
      Interface = "{{ $labels.ifName }}";
      Alias = "{{ $labels.ifAlias }}";
    };
  };

  alerts.SwitchInLinkUsage = {
    expr = ''
      rate(ifHCInOctets[5m]) / (
        (ifHighSpeed > 0) * 1000000 / 8
      ) > 0.8
    '';
    for = "5m";
    keep_firing_for = "10m";
    labels = warning;
    annotations = {
      Usage = "{{ $value | humanizePercentage }}";
      Interface = "{{ $labels.ifName }}";
      Alias = "{{ $labels.ifAlias }}";
    };
  };

  alerts.SwitchOutLinkUsage = {
    expr = ''
      rate(ifHCOutOctets[5m]) / (
        (ifHighSpeed > 0) * 1000000 / 8
      ) > 0.8
    '';
    for = "5m";
    keep_firing_for = "10m";
    labels = warning;
    annotations = {
      Usage = "{{ $value | humanizePercentage }}";
      Interface = "{{ $labels.ifName }}";
      Alias = "{{ $labels.ifAlias }}";
    };
  };
}