{{- $title := .Title | default .Site.Title -}}
{{- $desc := .Description | default .Summary | default .Site.Params.description | plainify | truncate 200 -}}

{{/* Resolve image: page resource cover.* > .Params.image > site default */}}
{{- $image := "" -}}
{{- with .Resources.GetMatch "cover.*" -}}
  {{- $img := .Resize "1200x webp q90" -}}
  {{- $image = $img.Permalink -}}
{{- else -}}
  {{- with $.Params.image -}}
    {{- $image = . -}}
  {{- else -}}
    {{- $image = $.Site.Params.images.default | default "/images/og-default.png" -}}
  {{- end -}}
{{- end -}}
{{- if and $image (not (strings.HasPrefix $image "http")) -}}
  {{- $image = $image | absURL -}}
{{- end -}}

<meta property="og:title" content="{{ $title }}">
<meta property="og:description" content="{{ $desc }}">
<meta property="og:type" content="{{ cond (eq .Section "tracks") "music.song" "website" }}">
<meta property="og:url" content="{{ .Permalink }}">
<meta property="og:site_name" content="{{ .Site.Title }}">
<meta property="og:locale" content="en_US">

{{- if $image }}
<meta property="og:image" content="{{ $image }}">
<meta property="og:image:alt" content="{{ $title }}">
{{- end }}

{{/* Audio-specific OpenGraph tags */}}
{{- if and (eq .Section "tracks") .Params.audio }}
<meta property="og:audio" content="{{ .Params.audio }}">
<meta property="og:audio:type" content="audio/mpeg">
  {{- if .Params.duration }}
<meta property="music:duration" content="{{ .Params.duration }}">
  {{- end }}
  {{- if .Params.artist }}
<meta property="music:musician" content="{{ .Params.artist }}">
  {{- end }}
{{- end }}