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'use strict'
// external modules
const crypto = require('crypto')
const randomcolor = require('randomcolor')
const config = require('./config')
// core
exports.generateAvatar = function (name) {
const color = randomcolor({
seed: name,
luminosity: 'dark'
})
const letter = name.substring(0, 1).toUpperCase()
let svg = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
svg += '<svg xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://www.w3.org/2000/svg" height="96" width="96" version="1.1" viewBox="0 0 96 96">'
svg += '<g>'
svg += '<rect width="96" height="96" fill="' + color + '" />'
svg += '<text font-size="64px" font-family="sans-serif" text-anchor="middle" fill="#ffffff">'
svg += '<tspan x="48" y="72" stroke-width=".26458px" fill="#ffffff">' + letter + '</tspan>'
svg += '</text>'
svg += '</g>'
svg += '</svg>'
return svg
}
exports.generateAvatarURL = function (name, email = '', big = true) {
let photo
if (typeof email !== 'string') {
email = '' + name + '@example.com'
}
name = encodeURIComponent(name)
const hash = crypto.createHash('md5')
hash.update(email.toLowerCase())
const hexDigest = hash.digest('hex')
if (email !== '' && config.allowGravatar) {
photo = 'https://cdn.libravatar.org/avatar/' + hexDigest
if (big) {
photo += '?s=400'
} else {
photo += '?s=96'
}
} else {
photo = config.serverURL + '/user/' + (name || email.substring(0, email.lastIndexOf('@')) || hexDigest) + '/avatar.svg'
}
return photo
}
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