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peertube/server/core/helpers/mentions.ts

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import { uniqify } from '@peertube/peertube-core-utils'
import { WEBSERVER } from '@server/initializers/constants.js'
import { actorNameAlphabet } from './custom-validators/activitypub/actor.js'
import { regexpCapture } from './regexp.js'
export function extractMentions (text: string, isOwned: boolean) {
let result: string[] = []
const localMention = `@(${actorNameAlphabet}+)`
const remoteMention = `${localMention}@${WEBSERVER.HOST}`
const mentionRegex = isOwned
? '(?:(?:' + remoteMention + ')|(?:' + localMention + '))' // Include local mentions?
: '(?:' + remoteMention + ')'
const firstMentionRegex = new RegExp(`^${mentionRegex} `, 'g')
const endMentionRegex = new RegExp(` ${mentionRegex}$`, 'g')
const remoteMentionsRegex = new RegExp(' ' + remoteMention + ' ', 'g')
result = result.concat(
regexpCapture(text, firstMentionRegex)
.map(([ , username1, username2 ]) => username1 || username2),
regexpCapture(text, endMentionRegex)
.map(([ , username1, username2 ]) => username1 || username2),
regexpCapture(text, remoteMentionsRegex)
.map(([ , username ]) => username)
)
// Include local mentions
if (isOwned) {
const localMentionsRegex = new RegExp(' ' + localMention + ' ', 'g')
result = result.concat(
regexpCapture(text, localMentionsRegex)
.map(([ , username ]) => username)
)
}
return uniqify(result)
}