{{ define "__alert_severity_prefix_title" -}}
  {{- if eq .Status "firing" -}}
    {{- if eq .CommonLabels.severity "info" -}}
      ℹ️
    {{- else if eq .CommonLabels.severity "warning" -}}
      ⚠️
    {{- else if eq .CommonLabels.severity "critical" -}}
      🔴
    {{- else -}}
      🔴
    {{- end -}}
  {{- else -}}
  ✅
  {{- end }}
{{- end }}

{{ define "__alert_severity_title" -}}
  *{{ .Status | toUpper -}}*{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{- end -}} {{- template "__alert_severity_prefix_title" . -}}
  *{{ .CommonLabels.alertname }}*
{{- end }}
{{ define "__alert_severity_text" -}}
    {{- $alertsLen := (len .Alerts) -}}
    {{ range .Alerts }}

        {{- if .Annotations.description }}
_{{ .Annotations.description }}_
        {{- end }}
        {{- if .Annotations.message }}
_{{ .Annotations.message }}_
        {{- end }}
        {{- if le $alertsLen 10 }}
[Prometheus]({{ .GeneratorURL }})
        {{- end }}
    {{ end }}
{{- end }}

{{ define "telegram.custom.message" -}}
{{ template "__alert_severity_title" . }}
{{ template "__alert_severity_text" . }}
{{- end }}