Support customized meta tags for Twitter Card

[p1slave]

Check List

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Feature Request

It would be great to support customized meta tags for Twitter Card based on the content on each post so that when you tweet the blog link, the preview of text, images, or even videos will show up in the timeline rather than a suspicious link that no one is interested in opening it. Here is the link to the docs of Twitter Card.

Are there any existing plugins that can handle it? I'm not really familiar with the whole Hexo plugin system and may try to write a plugin myself but I think it would be beneficial to everyone if Hexo official team can support this feature!

[stevenjoezhang]

We could use post excerpt as twitter:description in open_graph helper.

Source code:

hexo/lib/plugins/helper/open_graph.js

Lines 151 to 170 in cb19b29

	result += meta('twitter:card', twitterCard);
	if (options.twitter_image) {
	let twitter_image = options.twitter_image;
	twitter_image = new URL(twitter_image, url || config.url);
	result += meta('twitter:image', twitter_image, false);
	} else if (images.length) {
	result += meta('twitter:image', images[0], false);
	}
	if (options.twitter_id) {
	let twitterId = options.twitter_id;
	if (!twitterId.startsWith('@')) twitterId = `@${twitterId}`;
	result += meta('twitter:creator', twitterId);
	}
	if (options.twitter_site) {
	result += meta('twitter:site', options.twitter_site, false);
	}