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{{- /*
Renders an embedded YouTube video.
@param {bool} [allowFullScreen=true] Whether the iframe element can activate full screen mode.
@param {bool} [autoplay=false] Whether to automatically play the video. Forces mute to be true.
@param {string} [class] The class attribute of the wrapping div element. When specified, removes the style attributes from the iframe element and its wrapping div element.
@param {bool} [controls=true] Whether to display the video controls.
@param {int} [end] The time, measured in seconds from the start of the video, when the player should stop playing the video.
@param {string} [id] The video id. Optional if the id is provided as first positional argument.
@param {string} [loading=eager] The loading attribute of the iframe element.
@param {bool} [loop=false] Whether to indefinitely repeat the video.
@param {bool} [mute=false] Whether to mute the video. Always true when autoplay is true.
@param {int} [start] The time, measured in seconds from the start of the video, when the player should start playing the video.
@param {string} [title] The title attribute of the iframe element. Defaults to the title returned by YouTube oEmbed API.
@returns {template.HTML}
@reference https://developers.google.com/youtube/player_parameters
@example {{< youtube 0RKpf3rK57I >}}
@example {{< youtube id=0RKpf3rK57I loading=lazy start=30 >}}
*/}}
{{- $pc := .Page.Site.Config.Privacy.YouTube }}
{{- if not $pc.Disable }}
{{- with $id := or (.Get "id") (.Get 0) }}
{{- /* Get data from the YouTube oEmbed API. */}}
{{- $q := querify "url" (printf "https://www.youtube.com/watch?v=%s" $id) "format" "json" }}
{{- $url := printf "https://www.youtube.com/oembed?%s" $q }}
{{- $data := dict }}
{{- with resources.GetRemote $url }}
{{- with .Err }}
{{- errorf "The %q shortcode was unable to get remote resource %q. %s. See %s" $.Name $url . $.Position }}
{{- else }}
{{- $data = .Content | transform.Unmarshal }}
{{- end }}
{{- else }}
{{- errorf "The %q shortcode was unable to get remote resource %q. See %s" $.Name $url $.Position }}
{{- end }}
{{/* Set defaults. */}}
{{- $allowFullScreen := "allowfullscreen" }}
{{- $autoplay := 0 }}
{{- $class := "" }}
{{- $controls := 1 }}
{{- $end := 0 }}
{{- $loading := "eager" }}
{{- $loop := 0 }}
{{- $mute := 0 }}
{{- $start := 0 }}
{{- $title := $data.title }}
{{- /* Get arguments. */}}
{{- if in (slice "false" false 0) ($.Get "allowFullScreen") }}
{{- $allowFullScreen = "" }}
{{- else if in (slice "true" true 1) ($.Get "allowFullScreen") }}
{{- $allowFullScreen = "allowfullscreen" }}
{{- end }}
{{- if in (slice "false" false 0) ($.Get "autoplay") }}
{{- $autoplay = 0 }}
{{- else if in (slice "true" true 1) ($.Get "autoplay") }}
{{- $autoplay = 1 }}
{{- end }}
{{- if in (slice "false" false 0) ($.Get "controls") }}
{{- $controls = 0 }}
{{- else if in (slice "true" true 1) ($.Get "controls") }}
{{- $controls = 1 }}
{{- end }}
{{- if in (slice "false" false 0) ($.Get "loop") }}
{{- $loop = 0 }}
{{- else if in (slice "true" true 1) ($.Get "loop") }}
{{- $loop = 1 }}
{{- end }}
{{- if in (slice "false" false 0) ($.Get "mute") }}
{{- $mute = 0 }}
{{- else if or (in (slice "true" true 1) ($.Get "mute")) $autoplay }}
{{- $mute = 1 }}
{{- end }}
{{- $class := or ($.Get "class") $class }}
{{- $end := or ($.Get "end") $end }}
{{- $loading := or ($.Get "loading") $loading }}
{{- $start := or ($.Get "start") $start }}
{{- $title := or ($.Get "title") $title }}
{{- /* Determine host. */}}
{{- $host := cond $pc.PrivacyEnhanced "www.youtube-nocookie.com" "www.youtube.com" }}
{{- /* Set styles. */}}
{{- $divStyle := "position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;" }}
{{- $iframeStyle := "position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" }}
{{- if $class }}
{{- $iframeStyle = "" }}
{{- end }}
{{- /* Set class or style of wrapping div element. */}}
{{- $divClassOrStyle := printf "style=%q" $divStyle }}
{{- with $class }}
{{- $divClassOrStyle = printf "class=%q" $class }}
{{- end }}
{{- /* Define src attribute. */}}
{{- $src := printf "https://%s/embed/%s" $host $id }}
{{- $params := dict
"autoplay" $autoplay
"controls" $controls
"end" $end
"mute" $mute
"start" $start
"loop" $loop
}}
{{- if $loop }}
{{- $params = merge $params (dict "playlist" $id) }}
{{- end }}
{{- $s := slice }}
{{- range $k, $v := $params }}
{{- $s = $s | append $k }}
{{- $s = $s | append $v }}
{{- end }}
{{- with querify $s }}
{{- $src = printf "%s?%s" $src . }}
{{- end }}
{{- /* Set iframe attributes. */}}
{{- $iframeAttributes := dict
"allow" "accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
"allowfullscreen" $allowFullScreen
"loading" $loading
"referrerpolicy" "strict-origin-when-cross-origin"
"src" $src
"style" $iframeStyle
"title" $title
}}
{{- /* Render. */}}
<div {{ $divClassOrStyle | safeHTMLAttr }}>
<iframe
{{- range $k, $v := $iframeAttributes }}
{{- if $v }}
{{- printf " %s=%q" $k $v | safeHTMLAttr }}
{{- end }}
{{- end }}
></iframe>
</div>
{{- else }}
{{- errorf "The %q shortcode requires an id argument. See %s" .Name .Position }}
{{- end }}
{{- end }}
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