import { JSDOM } from 'jsdom'; import config from '../config'; import { intersperse } from '../prelude/array'; import { MfmForest, MfmTree } from './prelude'; import { IMentionedRemoteUsers } from '../models/entities/note'; export function toHtml(tokens: MfmForest | null, mentionedRemoteUsers: IMentionedRemoteUsers = []) { if (tokens == null) { return null; } const { window } = new JSDOM(''); const doc = window.document; function appendChildren(children: MfmForest, targetElement: any): void { for (const child of children.map(t => handlers[t.node.type](t))) targetElement.appendChild(child); } const handlers: { [key: string]: (token: MfmTree) => any } = { bold(token) { const el = doc.createElement('b'); appendChildren(token.children, el); return el; }, big(token) { const el = doc.createElement('strong'); appendChildren(token.children, el); return el; }, small(token) { const el = doc.createElement('small'); appendChildren(token.children, el); return el; }, strike(token) { const el = doc.createElement('del'); appendChildren(token.children, el); return el; }, italic(token) { const el = doc.createElement('i'); appendChildren(token.children, el); return el; }, motion(token) { const el = doc.createElement('i'); appendChildren(token.children, el); return el; }, spin(token) { const el = doc.createElement('i'); appendChildren(token.children, el); return el; }, jump(token) { const el = doc.createElement('i'); appendChildren(token.children, el); return el; }, flip(token) { const el = doc.createElement('span'); appendChildren(token.children, el); return el; }, blockCode(token) { const pre = doc.createElement('pre'); const inner = doc.createElement('code'); inner.innerHTML = token.node.props.code; pre.appendChild(inner); return pre; }, center(token) { const el = doc.createElement('div'); appendChildren(token.children, el); return el; }, emoji(token) { return doc.createTextNode(token.node.props.emoji ? token.node.props.emoji : `:${token.node.props.name}:`); }, hashtag(token) { const a = doc.createElement('a'); a.href = `${config.url}/tags/${token.node.props.hashtag}`; a.textContent = `#${token.node.props.hashtag}`; a.setAttribute('rel', 'tag'); return a; }, inlineCode(token) { const el = doc.createElement('code'); el.textContent = token.node.props.code; return el; }, mathInline(token) { const el = doc.createElement('code'); el.textContent = token.node.props.formula; return el; }, mathBlock(token) { const el = doc.createElement('code'); el.textContent = token.node.props.formula; return el; }, link(token) { const a = doc.createElement('a'); a.href = token.node.props.url; appendChildren(token.children, a); return a; }, mention(token) { const a = doc.createElement('a'); const { username, host, acct } = token.node.props; switch (host) { case 'github.com': a.href = `https://github.com/${username}`; break; case 'twitter.com': a.href = `https://twitter.com/${username}`; break; default: const remoteUserInfo = mentionedRemoteUsers.find(remoteUser => remoteUser.username === username && remoteUser.host === host); a.href = remoteUserInfo ? remoteUserInfo.uri : `${config.url}/${acct}`; a.className = 'u-url mention'; break; } a.textContent = acct; return a; }, quote(token) { const el = doc.createElement('blockquote'); appendChildren(token.children, el); return el; }, title(token) { const el = doc.createElement('h1'); appendChildren(token.children, el); return el; }, text(token) { const el = doc.createElement('span'); const nodes = (token.node.props.text as string).split(/\r\n|\r|\n/).map(x => doc.createTextNode(x) as Node); for (const x of intersperse('br', nodes)) { el.appendChild(x === 'br' ? doc.createElement('br') : x); } return el; }, url(token) { const a = doc.createElement('a'); a.href = token.node.props.url; a.textContent = token.node.props.url; return a; }, search(token) { const a = doc.createElement('a'); a.href = `https://www.google.com/?#q=${token.node.props.query}`; a.textContent = token.node.props.content; return a; } }; appendChildren(tokens, doc.body); return `

${doc.body.innerHTML}

`; }