{{- /*
  -- Returns the description of a page (plain text), used by the meta
  -- description, Open Graph, Twitter cards and structured data.
  --
  -- In order of preference:
  -- 1. the "description" front matter parameter
  -- 2. the description of the site, for the home page
  -- 3. "Articles related to <term>" for the taxonomy term pages
  -- 4. the summary of the page, truncated to ~160 characters
  -- 5. the description of the site
  -- 6. the title of the page
  */ -}}
{{- $description := "" -}}
{{- if .Description -}}
  {{- $description = .Description -}}
{{- else if and .IsHome site.Params.description -}}
  {{- $description = site.Params.description -}}
{{- else if eq .Kind "term" -}}
  {{- $description = printf "%s %s" (i18n "articles_related_to" | strings.TrimSpace) .Title -}}
{{- else -}}
  {{- $summary := .Summary | plainify | htmlUnescape | replaceRE `\s+` " " | strings.TrimSpace -}}
  {{- with $summary -}}
    {{- $description = truncate 160 . -}}
  {{- else -}}
    {{- $description = or site.Params.description .Title -}}
  {{- end -}}
{{- end -}}
{{- return ($description | plainify | htmlUnescape | strings.TrimSpace) -}}