mirror of https://github.com/TryGhost/Ghost.git
46 lines
1.7 KiB
JavaScript
46 lines
1.7 KiB
JavaScript
// # Amp Components Helper
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// Usage: `{{amp_components}}`
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//
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// Reads through the AMP HTML and adds neccessary scripts
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// for each extended component
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// If more components need to be added, we can add more scripts.
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// Here's the list of all supported extended components: https://www.ampproject.org/docs/reference/extended.html
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// By default supported AMP HTML tags (no additional script tag necessary):
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// amp-img, amp-ad, amp-embed, amp-video and amp-pixel.
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// (less) dirty requires
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const proxy = require('../../../../services/proxy');
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const SafeString = proxy.SafeString;
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function ampComponents() {
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let components = [];
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let html = this.post && this.post.html || this.html;
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if (!html) {
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return;
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}
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if (html.indexOf('.gif') !== -1) {
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components.push('<script async custom-element="amp-anim" src="https://cdn.ampproject.org/v0/amp-anim-0.1.js"></script>');
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}
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let iframeCount = (html.match(/(<iframe)(.*?)(<\/iframe>)/gi) || []).length;
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let youtubeCount = (html.match(/(<iframe)(.*?)(youtu.be\/|youtube(-nocookie)?.com\/(v\/|.*u\/\w\/|embed\/|.*v=))(.*?)(<\/iframe>)/gi) || []).length;
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if (youtubeCount) {
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components.push('<script async custom-element="amp-youtube" src="https://cdn.ampproject.org/v0/amp-youtube-0.1.js"></script>');
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}
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if (iframeCount > youtubeCount) {
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components.push('<script async custom-element="amp-iframe" src="https://cdn.ampproject.org/v0/amp-iframe-0.1.js"></script>');
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}
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if (html.indexOf('<audio') !== -1) {
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components.push('<script async custom-element="amp-audio" src="https://cdn.ampproject.org/v0/amp-audio-0.1.js"></script>');
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}
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return new SafeString(components.join('\n'));
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}
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module.exports = ampComponents;
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