{{/* vim: set filetype=mustache: */}}

{{- /*
Merge one or more YAML templates and output the result.
This takes an list of values:
- the top context
- [optional] zero or more template args
- [optional] the template name of the overrides (destination)
- the template name of the base (source)
*/ -}}
{{- define "common.utils.merge" -}}
{{- $top := first . -}}
{{- $tplName := last . -}}
{{- $args := initial . -}}
{{- if typeIs "string" (last $args) -}}
  {{- $overridesName := last $args -}}
  {{- $args = initial $args -}}
  {{- $tpl := fromYaml (include $tplName $args) | default (dict) -}}
  {{- $overrides := fromYaml (include $overridesName $args) | default (dict) -}}
  {{- toYaml (merge $overrides $tpl) -}}
{{- else -}}
  {{- include $tplName $args -}}
{{- end -}}
{{- end -}}