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server.tsx
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/** @jsxImportSource hono/jsx */
import * as path from "@std/path";
import * as fs from "@std/fs";
import { contentType } from "@std/media-types";
import { compress } from "hono/compress";
import { type Context, Hono } from "hono";
import { Index } from "./templates/index.tsx";
import {
filterArticlesFTS,
getArticle,
getArticles,
getRSS,
getSitemap,
isPostsFolderEmpty,
} from "./blog.ts";
import { isDirectoryEmpty, isUrl } from "./utils.ts";
import { ArticlePage } from "./templates/article.tsx";
import { Articles } from "./templates/components/articles.tsx";
import { storeArticle } from "./article_generator.ts";
import { CustomPage } from "./templates/customPage.tsx";
import { ErrorPage } from "./templates/error.tsx";
import type { SmallblogConfig } from "./types.ts";
export function createServer(config: SmallblogConfig) {
const server = new Hono();
const faviconIsUrl = isUrl(config.favicon || "");
const postsFolder = path.join(config.dataFolder, config.postsFolder);
const customPages = config.nav?.map((entry, index) => {
return {
...entry,
external:
entry.path.startsWith("http://") || entry.path.startsWith("https://"),
order: index,
};
});
server.use(compress());
server.get("/", async (c) => {
const page = c.req.query("page") || 1;
const search = c.req.query("search") || "";
const itemsPerPage = 5;
const posts = getArticles(postsFolder, undefined, config.defaultAuthors);
const filteredPosts = filterArticlesFTS(posts, search);
const hxRequest = c.req.header("hx-request");
const hxBoosted = c.req.header("hx-boosted");
if (hxRequest && !hxBoosted) {
return c.html(
<Articles
posts={filteredPosts}
search={search}
page={Number(page)}
itemsPerPage={itemsPerPage}
/>,
200,
{
"HX-Push-Url": search ? "/?page=1&search=" + search : "/?page=1",
},
);
}
return c.html(
`<!DOCTYPE html>` +
(
<Index
posts={filteredPosts}
page={Number(page)}
itemsPerPage={itemsPerPage}
search={search}
siteTitle={config.siteTitle}
indexTitle={config.indexTitle}
indexSubtitle={config.indexSubtitle}
url={c.req.url}
locale={config.locale}
description={config.siteDescription}
noArticlesMessage={await getNoArticlesMessage(config)}
noPosts={isPostsFolderEmpty(postsFolder)}
bodyScript={config.customBodyScript}
headScript={config.customHeaderScript}
favicon={!!config.favicon}
faviconLink={faviconIsUrl ? config.favicon : undefined}
customPages={customPages}
/>
),
);
});
server.get("/rss.xml", (c) => {
const baseUrl = getBaseUrl(c);
const articles = getArticles(postsFolder, undefined, config.defaultAuthors);
const xml = getRSS(baseUrl, articles);
return new Response(xml, {
headers: {
"content-type": "application/xml",
},
});
});
server.get("/sitemap.xml", (c) => {
const baseUrl = getBaseUrl(c);
const articles = getArticles(postsFolder, undefined, config.defaultAuthors);
const xml = getSitemap(
baseUrl,
articles
.map((e) => e.url)
.concat(
customPages?.filter((e) => !e.external).map((e) => e.path) || [],
),
);
if (xml) {
return new Response(xml, {
headers: {
"content-type": "application/xml",
},
});
}
return new Response("Not found", { status: 404 });
});
server.get("/robots.txt", (c) => {
const baseUrl = getBaseUrl(c);
const robotTxt = `
User-agent: *
Sitemap: ${new URL("/sitemap.xml", baseUrl).href}
`
.replace(/ +/g, "")
.trim();
return new Response(robotTxt, {
headers: {
"content-type": "text/plain",
},
});
});
server.on("GET", ["/favicon", "/favicon.ico"], () => {
return serveStaticFile(config.favicon);
});
server.get("/init", async (c) => {
fs.ensureDirSync(postsFolder);
if (await isDirectoryEmpty(postsFolder)) {
storeArticle(postsFolder, "first-article.md", {
title: "My first article",
});
}
return c.redirect("/");
});
server.get("/:filename{.+$}", (c) => {
const filename = c.req.param("filename");
if (!filename) {
// if the route is /
return new Response("Not found", { status: 404 });
}
if (path.extname(filename)) {
// if the name contains an ext this is not an article
return serveStaticFile(filename, config.dataFolder);
}
const basename = path.basename(filename);
const dirname = path.dirname(filename);
const matchingFolder = path.join(config.dataFolder, dirname);
return servePage(
c,
basename,
matchingFolder,
faviconIsUrl,
customPages,
config,
path.resolve(matchingFolder) === path.resolve(postsFolder) ||
matchingFolder === postsFolder,
);
});
server.onError((err, c) => {
console.error(err);
return c.html(
`<!DOCTYPE html>` +
(
<ErrorPage
errorNumber={typeof err.cause === "number" ? err.cause : 500}
errorMessage={err.message}
siteTitle={config.siteTitle}
url={c.req.url}
locale={config.locale}
bodyScript={config.customBodyScript}
headScript={config.customHeaderScript}
favicon={!!config.favicon}
faviconLink={faviconIsUrl ? config.favicon : undefined}
customPages={customPages}
/>
),
);
});
server.notFound((c) => {
return c.html(
`<!DOCTYPE html>` +
(
<ErrorPage
errorNumber={404}
errorMessage="Not found"
siteTitle={config.siteTitle}
url={c.req.url}
locale={config.locale}
bodyScript={config.customBodyScript}
headScript={config.customHeaderScript}
favicon={!!config.favicon}
faviconLink={faviconIsUrl ? config.favicon : undefined}
customPages={customPages}
/>
),
);
});
return server;
}
function getBaseUrl(c: Context): string {
return new URL(c.req.url).origin;
}
function servePage(
c: Context,
name: string,
folder: string,
faviconIsUrl: boolean,
customPages: { name: string; path: string; external: boolean }[] = [],
opts: SmallblogConfig,
article: boolean = true,
) {
const {
siteTitle = "Smallblog",
locale,
customHeaderScript,
customBodyScript,
favicon,
defaultAuthors,
} = opts;
const page = getArticle(name, folder, undefined, defaultAuthors);
const renderedPage = page.html;
if (!renderedPage) {
throw new Error("File not found", { cause: 404 });
}
if (article) {
return c.html(
`<!DOCTYPE html>` +
(
<ArticlePage
article={page}
siteTitle={siteTitle}
url={c.req.url}
locale={locale}
bodyScript={customBodyScript}
headScript={customHeaderScript}
favicon={!!favicon}
faviconLink={faviconIsUrl ? favicon : undefined}
customPages={customPages}
/>
),
);
}
return c.html(
`<!DOCTYPE html>` +
(
<CustomPage
article={page}
siteTitle={siteTitle}
url={c.req.url}
locale={locale}
bodyScript={customBodyScript}
headScript={customHeaderScript}
favicon={!!favicon}
faviconLink={faviconIsUrl ? favicon : undefined}
customPages={customPages}
/>
),
);
}
function serveStaticFile(name?: string, folder?: string) {
if (!name) {
throw new Error("File not found", { cause: 404 });
}
try {
let file;
if (folder) {
file = Deno.readFileSync(path.join(folder, name));
} else {
file = Deno.readFileSync(name);
}
return new Response(file, {
headers: {
"content-type":
contentType(name.substring(name.lastIndexOf("."))) ||
"application/octet-stream",
},
});
} catch {
throw new Error("File not found", { cause: 404 });
}
}
async function getNoArticlesMessage(opts: SmallblogConfig) {
const { noArticlesMessage, postsFolder } = opts;
if (noArticlesMessage) {
return noArticlesMessage;
}
const baseMessage = `<p>You have no articles yet, you can add them by creating a folder <code>${postsFolder}</code> and adding markdown files in it.</p><p>Read the README for more informations.</p>`;
const writePermission = await Deno.permissions.query({
name: "write",
path: postsFolder,
});
if (writePermission.state === "granted") {
return (
baseMessage +
`<p><a class="button" href="/init">Let smallblog do it for you!</a></p>`
);
}
return baseMessage;
}