mirror of https://github.com/jkjoy/sunpeiwen.git
31 lines
631 B
JavaScript
31 lines
631 B
JavaScript
'use strict';
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const { createHash } = require('crypto');
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const { stringify } = require('querystring');
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const Cache = require('./cache');
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const cache = new Cache();
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function md5(str) {
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return createHash('md5').update(str).digest('hex');
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}
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function gravatarHelper(email, options) {
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if (typeof options === 'number') {
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options = {s: options};
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}
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const hash = cache.has(email) ? cache.get(email) : md5(email.toLowerCase());
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let str = `https://www.gravatar.com/avatar/${hash}`;
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const qs = stringify(options);
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if (qs) str += `?${qs}`;
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cache.set('email', hash);
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return str;
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}
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module.exports = gravatarHelper;
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