social-link-parser/dist/esm/utils/parse/platforms/telegram/index.js

Extract usernames, IDs, and metadata from social media URLs across 100+ platforms

import { Platforms } from '../../core/types.js';
import { normalize } from '../../utils/url.js';
import { createDomainPattern } from '../../utils/url.js';
import { QUERY_HASH } from '../../utils/constants.js';
const domains = ['t.me', 'telegram.me'];
const subdomains = [];
const DOMAIN_PATTERN = createDomainPattern(domains, subdomains);
export const telegram = {
    id: Platforms.Telegram,
    name: 'Telegram',
    color: '#0088CC',
    domains: domains,
    subdomains: subdomains,
    patterns: {
        profile: new RegExp(`^https?://${DOMAIN_PATTERN}/([A-Za-z0-9_]{5,32})/?${QUERY_HASH}$`, 'i'),
        handle: /^[A-Za-z0-9_]{5,32}$/,
        content: {
            channel: new RegExp(`^https?://${DOMAIN_PATTERN}/s/([A-Za-z0-9_]{5,32})/?${QUERY_HASH}$`, 'i'),
            post: new RegExp(`^https?://${DOMAIN_PATTERN}/([A-Za-z0-9_]{5,32})/(\\d+)/?${QUERY_HASH}$`, 'i'),
            join: new RegExp(`^https?://${DOMAIN_PATTERN}/joinchat/([A-Za-z0-9_-]{10,})/?${QUERY_HASH}$`, 'i'),
        },
    },
    detect(url) {
        if (!this.domains.some(d => url.includes(d)))
            return false;
        return this.patterns.profile.test(url) ||
            !!(this.patterns.content?.channel?.test(url)) ||
            !!(this.patterns.content?.post?.test(url)) ||
            !!(this.patterns.content?.join?.test(url));
    },
    extract(url, result) {
        const joinMatch = this.patterns.content?.join?.exec(url);
        if (joinMatch) {
            result.ids.joinCode = joinMatch[1];
            result.metadata.isJoin = true;
            result.metadata.contentType = 'join';
            return;
        }
        const channelMatch = this.patterns.content?.channel?.exec(url);
        if (channelMatch) {
            result.ids.channelName = channelMatch[1];
            result.metadata.isChannel = true;
            result.metadata.contentType = 'channel';
            return;
        }
        const postMatch = this.patterns.content?.post?.exec(url);
        if (postMatch) {
            result.ids.channelName = postMatch[1];
            result.ids.postId = postMatch[2];
            result.metadata.isPost = true;
            result.metadata.contentType = 'post';
            return;
        }
        const profileMatch = this.patterns.profile.exec(url);
        if (profileMatch) {
            result.username = profileMatch[1];
            result.metadata.isProfile = true;
            result.metadata.contentType = 'profile';
        }
    },
    validateHandle(handle) {
        return this.patterns.handle.test(handle.replace('@', ''));
    },
    buildProfileUrl(username) {
        return `https://t.me/${username}`;
    },
    normalizeUrl(url) {
        return normalize(url);
    },
};
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