apiVersion: monitoring.coreos.com/v1alpha1
kind: AlertmanagerConfig
metadata:
  name: telegram
  labels:
    alertmanager: main
  annotations:
    argocd.argoproj.io/sync-wave: "1"
spec:
  route:
    groupBy: [cluster, namespace, alertname]
    # A two-minute grace period absorbs alerts which resolve immediately and
    # never need to interrupt a human.
    groupWait: 2m
    groupInterval: 10m
    repeatInterval: 12h
    receiver: telegram
    routes:
      - receiver: "null"
        matchers:
          - name: alertname
            value: Watchdog|InfoInhibitor
            matchType: =~
      # Informational alerts remain queryable in Prometheus but do not page the
      # Telegram chat. Warning and critical alerts still use the parent route.
      - receiver: "null"
        matchers:
          - name: severity
            value: info
            matchType: =
  receivers:
    - name: telegram
      telegramConfigs:
        - botToken:
            name: alertmanager-telegram
            key: bot-token
          # Telegram chat IDs are routing identifiers rather than credentials;
          # AlertmanagerConfig only supports an integer here, not a Secret ref.
          chatID: 124317807
          sendResolved: true
          parseMode: HTML
          message: |-
            {{ if eq .Status "firing" }}🔥 <b>FIRING · {{ len .Alerts.Firing }}</b>{{ else }}✅ <b>RESOLVED · {{ len .Alerts.Resolved }}</b>{{ end }}
            {{ with .CommonLabels.alertname }}<b>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</b>{{ end }}{{ with .CommonLabels.severity }} · <code>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ end }}
            {{ range .Alerts }}

            {{ if eq .Status "firing" }}🔴{{ else }}🟢{{ end }} {{ with .Annotations.summary }}<b>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</b>{{ else }}<b>{{ .Labels.alertname | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</b>{{ end }}
            {{ with .Annotations.description }}{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}{{ end }}
            {{ if or .Labels.namespace .Labels.job_name .Labels.pod .Labels.container .Labels.node .Labels.instance }}
            <b>Context</b>
            {{ with .Labels.namespace }}Namespace: <code>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ end }}
            {{ with .Labels.job_name }}Job: <code>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ else }}
            {{ with .Labels.pod }}Pod: <code>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ end }}
            {{ with .Labels.container }}Container: <code>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ end }}
            {{ with .Labels.node }}Node: <code>{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ end }}
            {{ if and (not .Labels.node) .Labels.instance }}Instance: <code>{{ .Labels.instance | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}</code>{{ end }}
            {{ end }}
            {{ end }}
            Started: {{ .StartsAt | tz "Europe/London" | date "2006-01-02 15:04 MST" }}
            <a href="{{ .GeneratorURL | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}">📈 Open graph</a>{{ with .Annotations.runbook_url }} · <a href="{{ . | reReplaceAll "&" "&amp;" | reReplaceAll "<" "&lt;" | reReplaceAll ">" "&gt;" }}">📖 Runbook</a>{{ end }}
            {{ end }}
    - name: "null"