{{- $isExternal := strings.HasPrefix .Destination "http" -}}
{{- $parsed := urls.Parse .Destination -}}
{{- $host := $parsed.Host -}}
{{- $path := $parsed.Path -}}
{{- $query := $parsed.RawQuery -}}
{{- $aff := index site.Data.affiliates.sites $host -}}
{{- $isAffiliated := false -}}
{{- $newURL := .Destination -}}
{{- if and $isExternal $aff -}}
{{- $param := $aff.param -}}
{{- $value := $aff.value -}}
{{- $isAffiliated = true -}}
{{- if $query }}
{{- $newURL = printf "%s://%s%s?%s&%s=%s" $parsed.Scheme $host $path $query $param $value -}}
{{- else }}
{{- $newURL = printf "%s://%s%s?%s=%s" $parsed.Scheme $host $path $param $value -}}
{{- end }}
{{- end -}}
<a href="{{ $newURL }}" title="{{ .Title }}"
   {{- if $isExternal -}} rel="noreferrer" class="external-link{{ if $isAffiliated }} affiliated{{ end }}{{ if $isExternal }} external{{ end }}" {{- end -}}>
    {{- .Text | safeHTML -}}
</a>