# to know more about custom template language read alertmanager documentation
# inspired by : https://gist.github.com/milesbxf/e2744fc90e9c41b47aa47925f8ff6512

{{ define "slack.title" -}}
    [{{ .Status | toUpper -}}
    {{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{- end -}}
    ] {{ template "__alert_severity_prefix_title" . }} {{ .CommonLabels.alertname }}
{{- end }}

{{ define "slack.color" -}}
    {{ if eq .Status "firing" -}}
        {{ if eq .CommonLabels.severity "warning" -}}
            warning
        {{- else if eq .CommonLabels.severity "critical" -}}
            danger
        {{- else -}}
            #439FE0
        {{- end -}}
    {{ else -}}
    good
    {{- end }}
{{- end }}

{{ define "slack.icon_emoji" }}:prometheus:{{ end }}

{{/* The test to display in the alert */}}
  {{ define "slack.text" -}}
    {{ range .Alerts }}
        {{- if .Annotations.message }}
            {{ .Annotations.message }}
        {{- end }}
        {{- if .Annotations.description }}
            {{ .Annotations.description }}
        {{- end }}
    {{- end }}
{{- end }}