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simplereddit.js
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const CSP =
"default-src 'none'; img-src https://simplereddit.ethan.link/favicon.ico";
const ITEMS_LIMIT = 20;
addEventListener("fetch", (event) => {
event.respondWith(
handleRequest(event.request).catch(
(err) =>
new Response(err.stack, {
status: 500,
headers: {
"Content-Security-Policy": CSP,
},
})
)
);
});
async function handleRequest(request) {
const url = new URL(request.url);
const pathname = url.pathname;
// Favicon
if (pathname === "/favicon.ico")
return fetch("https://files.ethan.link/simplereddit.ico");
// Robots.txt
if (pathname === "/robots.txt")
return new Response("User-agent: *\nDisallow: /");
// Subreddit pages
if (pathname.startsWith("/r/")) return subredditPage(request, url);
// Home page
if (pathname === "/") return homePage();
// Home page form submissions
if (pathname === "/form") {
return Response.redirect(
`${url.origin}/r/${url.searchParams.get("subreddit")}`,
301
);
}
// 404 catch-all
return notFoundPage();
}
function homePage() {
const html = `
<!DOCTYPE html>
<head>
<meta name="viewport" content= "width=device-width, initial-scale=1.0">
<meta name="color-scheme" content="light dark">
<title>SimpleReddit</title>
</head>
<body>
<center>
<br><br><br>
<h1>SimpleReddit</h1>
<p>No distractions. No comments sections. No stylesheets. No JavaScript.</p>
<p>Just an HTML-only Reddit client to stop you entering an internet time vortex.</p>
<br><br>
<form action="/form" method="get">
r/<input name="subreddit" placeholder="Enter a subreddit name" autofocus required />
<button>Go to subreddit</button>
</form>
<br><br>
<p><small>Made by <a href="https://ethan.link">Ethan</a>, source code on <a href="https://github.com/Booligoosh/SimpleReddit">GitHub</a></small></p>
<p><small><small>☕ <a href="https://www.buymeacoffee.com/Booligoosh">Buy Me A Coffee</a> (tip jar)</small></small></p>
</center>
</body>`;
return new Response(html, {
headers: {
"Content-Type": "text/html; charset=utf-8",
"Cache-Control": "no-cache",
"Content-Security-Policy": CSP,
},
});
}
async function subredditPage(request, url) {
const subreddit = url.pathname.split("/")[2];
const { data } = await fetch(
`https://www.reddit.com/r/${subreddit}.json`
).then((r) => r.json());
if (!data) return notFoundPage();
const name = data.children[0].data.subreddit_name_prefixed;
// Redirect to nicely capitalised version, without any trailing bits
if (url.pathname !== `/${name}`) {
return Response.redirect(`${url.origin}/${name}`, 302);
}
const html = `
<!DOCTYPE html>
<head>
<meta name="viewport" content= "width=device-width, initial-scale=1.0">
<meta name="color-scheme" content="light dark">
<title>${name} • SimpleReddit</title>
</head>
<body>
<small><a href="/">← Homepage</a></small>
<br>
<br>
<big><big><big>
<b>${name}</b>
</big></big></big>
<br>
${formatCount(data.children[0].data.subreddit_subscribers)} members
<br><br>
<hr/>
${data.children
.filter(({ data }) => !data.title?.trim()?.endsWith("?"))
.slice(0, ITEMS_LIMIT)
.map(
({ data }) => `
<strong>
${
!data.is_self && !data.crosspost_parent_list?.[0]?.is_self
? `<a href="${
data.secure_media?.reddit_video?.fallback_url ?? data.url
}">`
: ""
}
${getTag(data)} ${data.title}
${
!data.is_self && !data.crosspost_parent_list?.[0]?.is_self
? "</a>"
: ""
}
</strong>
<br>
${new Date(data.created_utc * 1000).toLocaleString([], {
month: "short",
weekday: "short",
day: "numeric",
hour: "numeric",
minute: "numeric",
timeZone: request.cf?.timezone,
})}
${data.stickied ? "(pinned)" : ""} •
${data.ups} upvote${data.ups !== 1 ? "s" : ""}
${
data.crosspost_parent
? `<br><em>Crossposted from ${data.crosspost_parent_list?.[0]?.subreddit_name_prefixed}</em>`
: ""
}
${
data.is_self || data.crosspost_parent_list?.[0]?.is_self
? `
<details>
<summary>Self text</summary>
${
(
data.selftext_html ||
data.crosspost_parent_list?.[0]?.selftext_html
)
?.replaceAll("<", "<")
.replaceAll(">", ">")
.replaceAll("&", "&") || ""
}
</details>
`
: ""
}
<hr/>`
)
.join("")}
Ok, stop reading reddit now and go for a walk :)
</body>`;
return new Response(html, {
headers: {
"Content-Type": "text/html; charset=utf-8",
"Cache-Control": "no-cache",
"Content-Security-Policy": CSP,
},
});
}
function notFoundPage() {
return new Response("Not found", {
status: 404,
headers: {
"Content-Security-Policy": CSP,
},
});
}
function getTag(data) {
if (data.is_self || data.crosspost_parent_list?.[0]?.is_self) return "📝";
if (data.is_video) return "📽";
if (["i.redd.it", "i.imgur.com"].includes(data.domain)) return "📸";
return "🔗";
// if (data.is_self) return "[self]"
// if (data.is_video) return "[video]"
// if (data.domain === "i.redd.it") return "[image]"
// return "[link]"
}
function formatCount(count) {
if (count >= 1000000) return Math.floor(count / 1000000) + "m";
if (count >= 1000) return Math.floor(count / 1000) + "k";
else return count.toString();
}