import type { Database } from "bun:sqlite";
import type { Context } from "hono";
import { openMirror } from "../mirror/store.ts";
import { publicRepo, type RepoSettings, setting } from "../server/db.ts";
import { type Html, html } from "./html.ts";
export type PageContext = { domain: string; kepr: Database; mirrorDir: string };
export type PublicRepo = { settings: RepoSettings; mirror: Database };
// Static files are cached for an hour; the release in their URLs makes a new one load at once.
const { version } = (await Bun.file(`${import.meta.dir}/../../package.json`).json()) as {
version: string;
};
const HEAD_CACHE = "public, max-age=60";
// Content at a save never changes, but strip can remove it, so it is long-lived rather than
// immutable, and `private`, so no shared cache keeps it after the repo turns private (§20).
const SAVE_CACHE = "private, max-age=31536000";
const FONTS =
"https://fonts.bunny.net/css?family=bellota:700|comfortaa:700|martian-mono:400|quicksand:400,600|sacramento:400&display=swap";
/**
* The gate of §20: a private repo and an unknown one both come back null, and so both 404 alike.
*/
export function openPublicRepo(ctx: PageContext, name: string): PublicRepo | null {
const settings = publicRepo(ctx.kepr, name);
return settings ? { settings, mirror: openMirror(ctx.mirrorDir, name) } : null;
}
export function cacheFor(c: Context, atSave: boolean): void {
c.header("Cache-Control", atSave ? SAVE_CACHE : HEAD_CACHE);
}
export function notFound(c: Context, ctx: PageContext): Response {
c.header("Cache-Control", "no-store");
const body = html`
Not found
Nothing lives at this address.
`;
return c.html(page(ctx, { title: "Not found", description: "", path: c.req.path, body }), 404);
}
type PageOptions = { title: string; description: string; path: string; body: Html };
export function page(ctx: PageContext, options: PageOptions): string {
const site = setting(ctx.kepr, "site_name") ?? "kepr";
const branding = setting(ctx.kepr, "branding");
// The front page is the site itself, so its title is the bare site name.
const title = options.title ? `${options.title} — ${site}` : site;
const url = `https://${ctx.domain}${options.path}`;
return html`
${title}
${options.body}
`.value;
}
const UNITS: [number, string][] = [
[365 * 86400, "year"],
[30 * 86400, "month"],
[7 * 86400, "week"],
[86400, "day"],
[3600, "hour"],
[60, "minute"],
];
export function relativeTime(unixSeconds: number, now = Date.now() / 1000): string {
const elapsed = now - unixSeconds;
for (const [seconds, unit] of UNITS) {
const n = Math.floor(elapsed / seconds);
if (n >= 1) return `${n} ${unit}${n === 1 ? "" : "s"} ago`;
}
return "just now";
}
export function formatDate(unixSeconds: number): string {
return new Date(unixSeconds * 1000).toISOString().slice(0, 16).replace("T", " ");
}
export function plural(n: number, noun: string): string {
return `${n.toLocaleString("en-US")} ${noun}${n === 1 ? "" : "s"}`;
}
export function formatSize(bytes: number): string {
if (bytes < 1024) return `${bytes} B`;
if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
return `${(bytes / 1024 / 1024).toFixed(1)} MB`;
}
/** Percent-encodes each segment of a repo path for use in a URL. */
export function pathUrl(path: string): string {
return path.split("/").map(encodeURIComponent).join("/");
}