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common.js
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common.js
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const fs = require("fs");
const path = require("path");
const zlib = require("zlib");
const { promisify } = require("util");
const y = require("yassium");
const mime = require("mime");
const { marked } = require("marked");
const { customAlphabet } = require("nanoid");
const cheerio = require("cheerio");
const faFilePdf = require("@fortawesome/free-solid-svg-icons/faFilePdf.js");
const { getStaticsObject } = require("./render.js");
const { renderCard } = require("./backstage/render-card.js");
const fsPromises = {
writeFile: promisify(fs.writeFile),
unlink: promisify(fs.unlink),
exists: promisify(fs.exists),
};
const zlibPromises = {
gzip: promisify(zlib.gzip),
};
const PAGE_SIZE = 10;
const MINIMUM_INDEX_PAGE_SIZE = 5;
const RSS_SIZE = 20;
const WEBSUB_HUB = "https://pubsubhubbub.appspot.com/";
const BLOG_TITLE = "zemlan.in";
const PORT = process.env.PORT || 8000;
const BLOG_BASE_URL = process.env.BLOG_BASE_URL || ".";
const DIST = path.resolve(__dirname, process.env.DIST || "dist");
const POSTS_DB = path.resolve(__dirname, process.env.POSTS_DB || "posts.db");
const SESSIONS_DB = path.resolve(
__dirname,
process.env.SESSIONS_DB || "sessions.db"
);
const ACTIVITYSTREAMS_DB = path.resolve(
__dirname,
process.env.ACTIVITYSTREAMS_DB || "activitystreams.db"
);
const LINKLIST_SOURCE_FEED = process.env.LINKLIST_SOURCE_FEED || null;
const FOOTNOTE_MARKER = "^";
const nanoid = {
link: customAlphabet(
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ",
10
),
post: customAlphabet(
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ",
10
),
media: customAlphabet(
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ",
26
),
outbox: customAlphabet(
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ",
26
),
};
function isOwnMedia(href) {
return (
(process.env.BLOG_BASE_URL &&
href.startsWith(process.env.BLOG_BASE_URL + "/media/")) ||
href.startsWith("media/") ||
href.startsWith("/media/")
);
}
function getMimeObj(href, fullMimeType) {
fullMimeType = fullMimeType || mime.getType(href) || "";
const type = (fullMimeType && fullMimeType.split("/")[0]) || "";
return {
image: type === "image",
video: type === "video",
audio: type === "audio",
text:
type === "text" ||
fullMimeType === "application/javascript" ||
fullMimeType === "application/json",
pdf: fullMimeType === "application/pdf",
type: fullMimeType,
};
}
const textRenderer = new marked.TextRenderer();
textRenderer.paragraph = function (text) {
return text + "\n\n";
};
textRenderer.image = function () {
return "";
};
const renderer = new marked.Renderer();
const ogImage = renderer.image.bind(renderer);
const ogLink = renderer.link.bind(renderer);
const ogHTML = renderer.html.bind(renderer);
const ogParagraph = renderer.paragraph.bind(renderer);
const ogList = renderer.list.bind(renderer);
const ogCode = renderer.code.bind(renderer);
function decodeAttrs(text) {
return (
text &&
text
.replace(/'/g, `'`)
.replace(/"/g, `"`)
.replace(
/((src|href|poster)=['"]?)\/?media\//g,
`$1${process.env.BLOG_BASE_URL || ""}/media/`
)
);
}
function prefixOwnMedia(href) {
if (process.env.BLOG_BASE_URL && href.startsWith("/media/")) {
return process.env.BLOG_BASE_URL + href;
} else if (process.env.BLOG_BASE_URL && href.startsWith("media/")) {
return process.env.BLOG_BASE_URL + "/" + href;
} else if (href.startsWith("media/")) {
return "/" + href;
}
return href;
}
function pdfPlaceholder(href) {
const { width, height, svgPathData } = faFilePdf;
const iconX = 80 - faFilePdf.width / 20;
return (
"data:image/svg+xml;utf8," +
encodeURIComponent(
`
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 160 90">
<defs><style type="text/css">
text {
font-size: 4px;
font-family: "SF Mono", "Menlo-Regular", Consolas, "Andale Mono WT",
"Andale Mono", "Lucida Console", "Lucida Sans Typewriter",
"DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Liberation Mono",
"Nimbus Mono L", Monaco, "Courier New", Courier, monospace;
}
</style></defs>
<rect x="0" y="0" height="90" width="160" fill="white" />
<svg x="${iconX}" y="10" xmlns="http://www.w3.org/2000/svg" width="${
width / 10
}px" height="${height / 10}px" viewBox="0 0 ${width} ${height}">
<path fill="#00a500" d="${svgPathData}"></path>
</svg>
<text x="0" y="0" fill="#888">
<tspan x="80" dy="80" fill="#00a500" text-anchor="middle">
${href
.replace(/&/g, "&")
.replace(/</g, "<")
.replace(/>/g, ">")
.replace(/"/g, """)
.replace(/'/g, "'")}
</tspan>
</text>
</svg>
`.replace(/^\s+/gm, "")
)
);
}
function localEmbed(embed) {
const href = prefixOwnMedia(embed.href);
const mimeObj = getMimeObj(href);
const hrefIsDataURI = href.startsWith("data:text/html;base64");
const hrefIsOwnMedia = isOwnMedia(href);
if ((hrefIsOwnMedia && mimeObj.video) || embed.video) {
let attrs;
if (embed.attrs) {
attrs = embed.attrs;
} else {
attrs = "";
const { gifv, poster, title } = embed;
if (poster) {
attrs += `poster="${prefixOwnMedia(poster)}" `;
}
if (title) {
attrs += `title="${title
.replace(/&/g, "&")
.replace(/</g, "<")
.replace(/>/g, ">")
.replace(/"/g, """)
.replace(/'/g, "'")}" `;
}
const isOwnGIFV = hrefIsOwnMedia && href.indexOf("/gifv.mp4") > -1;
if (gifv || isOwnGIFV) {
attrs += `autoplay muted loop disableRemotePlayback `;
} else {
attrs += `controls preload="none" `;
}
}
return `<video playsinline src="${href}" ${attrs}></video>`;
}
if ((hrefIsOwnMedia && mimeObj.pdf) || embed.pdf) {
const imgSrc = embed.poster
? prefixOwnMedia(embed.poster)
: pdfPlaceholder(href);
return `<a class="embedded-pdf" href="${href}">
<img src="${imgSrc}">
</a>`;
}
if (hrefIsDataURI) {
const frameSrc = href;
let imgSrc = null;
embed.mimetype = "text/html";
if (embed.poster) {
imgSrc = prefixOwnMedia(embed.poster);
} else {
let lines = [`<tspan x="0" dy="12">data:text/html</tspan>`].concat(
frameSrc
.slice("data:text/html;base64,".length)
.split(/(.{25})/)
.filter(Boolean)
.slice(0, 6)
.map((line) => `<tspan x="0" dy="12">${line}</tspan>`)
);
if (embed.title) {
lines = [
...lines.slice(0, 3),
`<tspan x="80" dy="12" fill="#00a500" text-anchor="middle">${embed.title
.replace(/&/g, "&")
.replace(/</g, "<")
.replace(/>/g, ">")
.replace(/"/g, """)
.replace(/'/g, "'")}</tspan>`,
...lines.slice(3, 6),
];
}
imgSrc =
"data:image/svg+xml;utf8," +
encodeURIComponent(
`
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 160 90">
<defs><style type="text/css">
text {
font-size: 11px;
font-family: "SF Mono", "Menlo-Regular", Consolas, "Andale Mono WT",
"Andale Mono", "Lucida Console", "Lucida Sans Typewriter",
"DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Liberation Mono",
"Nimbus Mono L", Monaco, "Courier New", Courier, monospace;
}
</style></defs>
<rect x="0" y="0" height="90" width="160" fill="white" />
<text x="0" y="0" fill="#888">${lines.join("")}</text>
</svg>
`.replace(/^\s+/gm, "")
);
embed.href = frameSrc;
embed.poster = imgSrc;
}
}
if (hrefIsOwnMedia && embed.poster) {
return renderCard({
url: prefixOwnMedia(embed.href),
img: {
src: prefixOwnMedia(embed.poster),
},
title: embed.title,
description: embed.description,
mimetype: mimeObj.type,
_truncateDescription: false,
});
}
if (hrefIsOwnMedia && mimeObj.text) {
return `<iframe src="${href}" width="640" height="360" frameborder="0"></iframe>`;
}
if (hrefIsOwnMedia && mimeObj.image) {
return `<img src="${href}" alt="${embed.title || ""}">`;
}
return `<x-embed>${JSON.stringify(embed)}</x-embed>`;
}
function getAttr(rawAttrs, attr) {
const attrStart = rawAttrs.indexOf(attr + "=");
if (attrStart === -1) {
return;
}
let valueStart = attrStart + attr.length + 1;
let valueEnd;
if (rawAttrs[valueStart] === `"`) {
valueStart += 1;
valueEnd = rawAttrs.indexOf(`"`, valueStart);
} else if (rawAttrs[valueStart] === `'`) {
valueStart += 1;
valueEnd = rawAttrs.indexOf(`'`, valueStart);
} else {
valueEnd = rawAttrs.indexOf(` `, valueStart);
}
return rawAttrs
.slice(valueStart, valueEnd === -1 ? undefined : valueEnd)
.replace(/</g, "<")
.replace(/>/g, ">")
.replace(/"/g, `"`)
.replace(/'/g, `'`)
.replace(/&/g, "&");
}
function embedCallback(href, title, text) {
href = prefixOwnMedia(href);
const mimeObj = getMimeObj(href);
const hrefIsDataURI = href.startsWith("data:text/html;base64");
const hrefIsOwnMedia = isOwnMedia(href);
if (
(hrefIsOwnMedia || (text && text.indexOf("poster=") > -1)) &&
mimeObj.video
) {
const attrs = decodeAttrs(text);
return localEmbed({
href,
title: getAttr(attrs, "title"),
gifv: !!attrs.match(/(^|\s+)gifv($|\s+)/g),
poster: getAttr(attrs, "poster"),
});
}
if (hrefIsOwnMedia && mimeObj.pdf) {
const attrs = text ? decodeAttrs(text) : "";
return localEmbed({
href,
poster: getAttr(attrs, "poster"),
});
}
if (hrefIsDataURI) {
const attrs = text ? decodeAttrs(text) : "";
const poster = getAttr(attrs, "poster");
return localEmbed({
href,
title: poster ? "" : text,
poster: poster,
});
}
if (!hrefIsOwnMedia && !mimeObj.image) {
return localEmbed({ href });
}
return ogImage(href, title, text);
}
renderer.image = embedCallback;
renderer.code = function (code, infostring, escaped) {
if (infostring === "embed") {
const embeds = code
.split("\n")
.filter(Boolean)
.reduce((acc, line) => {
if (line.startsWith(" ") || line.startsWith("- ")) {
const embed = acc.pop() || {};
const colonIndex = line.indexOf(":");
const [key, value] = [
line.slice(2, colonIndex).trim(),
line.slice(colonIndex + 1).trim(),
];
embed[key] = value;
acc.push(embed);
} else {
acc.push({ href: line.trim() });
}
return acc;
}, []);
if (embeds.length === 0) {
return "";
}
const embedElements = embeds.map((e) => localEmbed(e));
if (embedElements.length === 1) {
return `<p>${embedElements[0]}</p>`;
}
const body = embedElements.map((el) => `<li>${el}</li>`).join("\n");
return `<ul data-gallery style="list-style:none;padding:0">\n${body}</ul>\n`;
}
if (infostring === "embed-html") {
const $ = cheerio.load(code);
const href = `data:text/html;base64,${Buffer.from(code).toString(
"base64"
)}`;
const title = $("title").text();
const poster = $('meta[property="og:image"]').attr("content");
return `<p>${localEmbed({ href, title, poster })}</p>`;
}
return ogCode(code, infostring, escaped);
};
renderer.link = function (href, title, text) {
if (text && text.startsWith(FOOTNOTE_MARKER)) {
return "";
}
href = prefixOwnMedia(href);
return ogLink(href, title, text);
};
renderer.html = function (html) {
html = html.replace(
/((src|href|poster)=['"]?)\/?media\//g,
`$1${process.env.BLOG_BASE_URL || ""}/media/`
);
return ogHTML(html);
};
renderer.paragraph = function (text) {
text = text.replace(
/((src|href|poster)=['"]?)\/?media\//g,
`$1${process.env.BLOG_BASE_URL || ""}/media/`
);
return ogParagraph(text);
};
renderer.list = function (body, ordered, start) {
const isGalleryList =
!ordered &&
body &&
body
.replace(/^\s*<li>\s*|\s*<\/li>\s*$/gi, "") // remove first opening and last closing
.split(/\s*<\/li>\s*<li>\s*/gi) // split list on `</li><li>`
.every(
(listitem) =>
// check if every list item has only either an `<img>`,
listitem.match(/^<img [^>]+>$/i) ||
// a `<video>`,
listitem.match(/^<video [^>]+><\/video>$/i) ||
// or a `<x-embed>` and nothing else
listitem.match(/^<x-embed>(?!<\/?x-embed>)[\s\S]+<\/x-embed>$/i)
);
if (isGalleryList) {
return `<ul data-gallery style="list-style:none;padding:0">\n${body}</ul>\n`;
}
return ogList(body, ordered, start);
};
function getPostUrl(post) {
return `${BLOG_BASE_URL}/${post.slug || post.id}.html`;
}
const WORD_REGEX =
/[a-zA-Z0-9_\u0392-\u03c9\u0400-\u04FF]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af\u0400-\u04FF]+|[\u00E4\u00C4\u00E5\u00C5\u00F6\u00D6]+|\w+/g;
const WORD_COUNT_FORMS = {
en: {
_rules: new Intl.PluralRules("en"),
one: y`${y.number} word`,
other: y`${y.number} words`,
},
ru: {
_rules: new Intl.PluralRules("ru"),
one: y`${y.number} слово`,
few: y`${y.number} слова`,
many: y`${y.number} слов`,
other: y`${y.number} слов`,
},
uk: {
_rules: new Intl.PluralRules("uk"),
one: y`${y.number} слово`,
few: y`${y.number} слова`,
many: y`${y.number} слів`,
other: y`${y.number} слів`,
},
};
function wordCountPhrase(lang, number) {
const { _rules, ...forms } = WORD_COUNT_FORMS[lang] || WORD_COUNT_FORMS.ru;
const form = _rules.select(number);
return (forms[form] || forms.other)({ number });
}
const markedOptions = {
gfm: true,
smartypants: false,
renderer: renderer,
langPrefix: "language-",
highlight: function (code, lang) {
return require("highlight.js").highlightAuto(
code,
lang ? [lang] : undefined
).value;
},
baseUrl: process.env.BLOG_BASE_URL || null,
};
function sealTeaser(teaserParagraphs) {
teaserParagraphs.push("", "");
}
function walkWithTeaser(token, postUrl, teaserParagraphs) {
if (token.type === "heading") {
sealTeaser(teaserParagraphs);
return;
}
if (token.type === "paragraph") {
if (token.tokens.length !== 1) {
return;
}
const paragraphContent = token.tokens[0];
if (paragraphContent.type === "image") {
teaserParagraphs.push(marked.parser([token], markedOptions));
return;
}
if (
paragraphContent.type === "link" &&
paragraphContent.tokens &&
paragraphContent.tokens.length === 1 &&
paragraphContent.tokens[0].type === "image"
) {
teaserParagraphs.push(marked.parser([token], markedOptions));
return;
}
if (paragraphContent.type === "em") {
const tokenWithoutFootnotes = {
...token,
tokens: [{ ...paragraphContent, tokens: [...paragraphContent.tokens] }],
};
walkWithoutFootnotes(tokenWithoutFootnotes.tokens[0]);
teaserParagraphs.push(
marked.parser([tokenWithoutFootnotes], markedOptions)
);
return;
}
sealTeaser(teaserParagraphs);
return;
}
if (token.type === "list") {
const tokenIsGalleryList = token.items.every((listitem) => {
const contentfulTokens = listitem.tokens.filter(
(t) => t.type !== "space"
);
const firstToken = contentfulTokens[0];
return (
contentfulTokens.length === 1 &&
firstToken.type === "text" &&
firstToken.tokens.length === 1 &&
firstToken.tokens[0].type === "image"
);
});
if (tokenIsGalleryList) {
teaserParagraphs.push(marked.parser([token], markedOptions));
return;
}
sealTeaser(teaserParagraphs);
return;
}
if (
token.type === "code" &&
(token.lang === "embed" || token.lang === "embed-html")
) {
teaserParagraphs.push(marked.parser([token], markedOptions));
return;
}
}
function escapeKaomoji(str) {
return str.replace(/¯\\_\(ツ\)_\/¯/g, "¯\\\\\\_(ツ)\\_/¯");
}
function walkWithoutFootnotes(token) {
if (token.tokens && token.tokens.length) {
token.tokens = token.tokens.reduce((acc, t) => {
if (t.type === "link" && t.text.startsWith(FOOTNOTE_MARKER)) {
return acc;
}
if (
!t.tokens &&
t.type === "text" &&
t.text.includes("[" + FOOTNOTE_MARKER)
) {
acc.push({
...t,
raw: t.raw.replace(/\[\^[^\]]+\]/g, ""),
text: t.text.replace(/\[\^[^\]]+\]/g, ""),
});
} else {
acc.push(t);
}
return acc;
}, []);
}
}
function hideToken(token) {
token.type = "space";
token.text = "";
token.raw = "";
token.tokens = null;
}
function walkWithFootnotes(token, postId, footnotes) {
if (
token.type === "code" &&
token.codeBlockStyle === "indented" &&
footnotes.checkForMultilineFootnote
) {
const footnoteId = footnotes.checkForMultilineFootnote;
const footnoteToUpdate = footnotes.find((fn) => fn.id === footnoteId);
const text = footnoteToUpdate.multilineStart + "\n\n" + token.text.trim();
const footnoteHTML = marked(
text +
` <a href="#rfn:${footnoteId}" rev="footnote">↩︎</a>`,
markedOptions
);
footnoteToUpdate.multilineStart = "";
footnoteToUpdate.html = `<li id="fn:${footnoteId}" tabindex="-1">${footnoteHTML}</li>`;
hideToken(token);
footnotes.checkForMultilineFootnote = null;
} else if (token.type !== "space") {
footnotes.checkForMultilineFootnote = null;
}
if (
token.type === "paragraph" &&
token.raw
.split("\n")
.filter(Boolean)
.every((line) => line.startsWith("[" + FOOTNOTE_MARKER))
) {
for (const line of token.raw.split("\n").filter(Boolean)) {
const [match, incompleteId] = line.match(/\[\^([^\]]+)\]: /);
const footnoteId = `${postId}:${incompleteId}`;
const footnoteToUpdate = footnotes.find((fn) => fn.id === footnoteId);
const text = line.slice(match.length).trim();
const footnoteHTML = marked(
text +
` <a href="#rfn:${footnoteId}" rev="footnote">↩︎</a>`,
markedOptions
);
footnoteToUpdate.multilineStart = text;
footnoteToUpdate.html = `<li id="fn:${footnoteId}" tabindex="-1">${footnoteHTML}</li>`;
footnotes.checkForMultilineFootnote = footnoteId;
}
hideToken(token);
} else if (token.tokens && token.tokens.length) {
token.tokens = token.tokens.reduce((acc, t) => {
if (t.type === "link" && t.text.startsWith(FOOTNOTE_MARKER)) {
const footnoteId = `${postId}:${t.text.slice(1)}`;
const footnoteHTML = marked(
(t.title || t.href).trim() +
` <a href="#rfn:${footnoteId}" rev="footnote">↩︎</a>`,
markedOptions
);
footnotes.push({
index: footnotes.length,
id: footnoteId,
html: `<li id="fn:${footnoteId}" tabindex="-1">${footnoteHTML}</li>`,
});
const anchor = `<sup><a href="#fn:${footnoteId}" id="rfn:${footnoteId}" rel="footnote">${footnotes.length}</a></sup>`;
acc.push({
type: "html",
raw: anchor,
inLink: true,
inRawBlock: false,
text: anchor,
});
} else if (
!t.tokens &&
t.type === "text" &&
t.text.includes("[" + FOOTNOTE_MARKER)
) {
let cursor = 0;
while (cursor < t.text.length - 1) {
const markerIndex = t.text.indexOf("[" + FOOTNOTE_MARKER, cursor);
if (markerIndex === -1) {
acc.push({
...t,
text: t.text.slice(cursor),
raw: t.text.slice(cursor),
});
break;
} else {
if (cursor < markerIndex) {
acc.push({
...t,
text: t.text.slice(cursor, markerIndex),
raw: t.text.slice(cursor, markerIndex),
});
}
cursor = t.text.indexOf("]", markerIndex + 2); // `"[^".length === 2`
const restOfFootnote = t.text.slice(
markerIndex + 2, // `"[^".length === 2`
cursor
);
cursor += 1; // `"]".length === 1`
const footnoteId = restOfFootnote.match(/^[a-zA-Z0-9_-]+$/i)
? `${postId}:${restOfFootnote}`
: `${postId}:${footnotes.length + 1}`;
const footnoteHTML = marked(
restOfFootnote.trim() +
` <a href="#rfn:${footnoteId}" rev="footnote">↩︎</a>`,
markedOptions
);
footnotes.push({
index: footnotes.length,
id: footnoteId,
html: `<li id="fn:${footnoteId}" tabindex="-1">${footnoteHTML}</li>`,
});
const anchor = `<sup><a href="#fn:${footnoteId}" id="rfn:${footnoteId}" rel="footnote">${footnotes.length}</a></sup>`;
acc.push({
type: "html",
raw: anchor,
inLink: true,
inRawBlock: false,
text: anchor,
});
}
}
} else {
acc.push(t);
}
return acc;
}, []);
}
}
function byIndex(a, b) {
return a.index - b.index;
}
function getOpengraphLocaleFromLang(lang) {
switch (lang) {
case "ru":
return "ru_RU";
case "uk":
return "uk_UA";
case "en":
return "en_US";
}
return null;
}
async function prepare(post, embedsLoader) {
post.text = escapeKaomoji(post.text);
const created = new Date(parseInt(post.created));
const modified = post.modified ? new Date(parseInt(post.modified)) : null;
let title = post.slug || created.toISOString().split("T")[0];
let htmlTitle = null;
let longread = null;
let html = null;
let htmlFootnotes = "";
post.url = getPostUrl(post);
const rss = {
title: null,
};
const opengraph = {
url: post.url,
locale: getOpengraphLocaleFromLang(post.lang),
title: title,
published_time: created.toISOString().replace(/\.\d{3}Z$/, "Z"),
modified_time: modified
? modified.toISOString().replace(/\.\d{3}Z$/, "Z")
: null,
description: null,
image: null,
};
const startsWithHeading = post.text && post.text.match(/^#+ [^\r\n]+/);
if (startsWithHeading && !post.internal) {
const headingLength = startsWithHeading[0].length;
htmlTitle = marked.parse(
post.text
.slice(0, headingLength)
.replace(/^(#+) (.*)$/, `$1 [$2](${post.url})`),
{
...markedOptions,
walkTokens: walkWithoutFootnotes,
}
);
htmlTitle = await embedsLoader.load(htmlTitle);
rss.title = title = cheerio.load(htmlTitle).text().trim();
const textWithoutTitle = post.text.slice(headingLength);
let numberOfParagraphs = 0;
const footnotes = [];
const teaserParagraphs = [];
html = marked.parse(textWithoutTitle, {
...markedOptions,
walkTokens(token) {
walkWithFootnotes(token, post.id, footnotes);
if (numberOfParagraphs < 2 && teaserParagraphs.length < 2) {
walkWithTeaser(token, post.url, teaserParagraphs);
}
if (token.type === "paragraph") {
numberOfParagraphs++;
}
},
});
if (footnotes.length) {
footnotes.sort(byIndex);
htmlFootnotes = `<div class="footnotes"><hr><ol>${footnotes
.map((f) => f.html)
.join("\n")}</ol></div>`;
}
rss.html = await embedsLoader.load(html + htmlFootnotes, {
externalFrames: true,
maxWidth: 720,
});
html = await embedsLoader.load(html);
htmlFootnotes = await embedsLoader.load(htmlFootnotes);
const teaser = await embedsLoader.load(teaserParagraphs.join("\n"));
const parsedTeaser = teaser && cheerio.load(teaser);
if (parsedTeaser) {
const teaserImg = parsedTeaser("img");
if (teaserImg && teaserImg.attr("src")) {
opengraph.image = teaserImg.attr("src");
opengraph.imageWidth = teaserImg.attr("width") || null;
opengraph.imageHeight = teaserImg.attr("height") || null;
} else {
const teaserPoster = parsedTeaser("[poster]");
if (teaserPoster && teaserPoster.attr("poster")) {
opengraph.image = teaserPoster.attr("poster");
}
}
}
if (opengraph.image) {
opengraph.image = prefixOwnMedia(opengraph.image);
}
opengraph.title = title.trim();
if (numberOfParagraphs > 3) {
const wordMatches = cheerio
.load(html + htmlFootnotes)
.text()
.match(WORD_REGEX);
const wordCount = wordMatches ? wordMatches.length : 0;
if (wordCount > 200) {
longread = {
title: htmlTitle,
teaser: teaser,
more: wordCountPhrase(post.lang, wordCount),
};
}
}
const description =
(parsedTeaser &&
parsedTeaser("em").text() &&
parsedTeaser("em").text().trim()) ||
(longread && longread.more);
opengraph.description = description || (longread && longread.more) || null;
} else {
const footnotes = [];
html = marked.parse(post.text, {
...markedOptions,
walkTokens(token) {
walkWithFootnotes(token, post.id, footnotes);
},
});
if (footnotes.length) {
footnotes.sort(byIndex);
htmlFootnotes = `<div class="footnotes"><hr><ol>${footnotes
.map((f) => f.html)
.join("\n")}</ol></div>`;
}
rss.html = await embedsLoader.load(html + htmlFootnotes, {
externalFrames: true,
maxWidth: 720,
});
html = await embedsLoader.load(html);
htmlFootnotes = await embedsLoader.load(htmlFootnotes);
if (!post.internal) {
const parsedPost = cheerio.load(html);
if (parsedPost) {
const firstImg = parsedPost("img");
if (firstImg && firstImg.attr("src")) {
opengraph.image = firstImg.attr("src");
opengraph.imageWidth = firstImg.attr("width") || null;
opengraph.imageHeight = firstImg.attr("height") || null;
} else {
const firstPoster = parsedPost("[poster]");
if (firstPoster && firstPoster.attr("poster")) {
opengraph.image = firstPoster.attr("poster");
}
}
}
if (opengraph.image) {
opengraph.image = prefixOwnMedia(opengraph.image);
}
}
}
let status;