76 lines
1.9 KiB
TypeScript
76 lines
1.9 KiB
TypeScript
import { Application, Router, type Context, type Next } from "jsr:@oak/oak";
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import { join } from "jsr:@std/path";
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import { Eta } from "jsr:@eta-dev/eta";
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// Create Eta instance
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const eta = new Eta({
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views: join(Deno.cwd(), "views"),
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cache: Deno.env.get("SERVICE_DOMAIN") === "production",
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});
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// Create Oak application
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const app = new Application();
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const router = new Router();
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// Serve static files
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app.use(async (ctx: Context, next: Next) => {
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const staticPath = join(Deno.cwd(), "static");
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try {
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// Strip /static prefix from path
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const path = ctx.request.url.pathname.replace(/^\/static/, '');
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await ctx.send({
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root: staticPath,
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path: path,
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index: "index.html",
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});
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} catch {
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await next();
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}
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});
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// Main route handler
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router.get("/", async (ctx: Context) => {
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const params = ctx.request.url.searchParams;
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let back_to_url = params.get("back_to") || "";
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let domain = "";
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// If no back_to parameter, check host header
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if (!back_to_url) {
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const host = ctx.request.headers.get("host") || "";
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const serviceDomain = Deno.env.get("SERVICE_DOMAIN") || "localhost";
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const domainRegex = new RegExp(`^(${serviceDomain.replace(/\./g, '\\.')}|localhost)`);
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// Exclude our own hosts
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if (host && !domainRegex.test(host)) {
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back_to_url = `http://${host}`;
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}
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}
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// Extract domain from URL
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if (back_to_url) {
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try {
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domain = new URL(back_to_url).hostname;
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} catch {
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// Invalid URL, ignore
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}
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}
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// Render template with context
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const html = await eta.render("index", {
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back_to_url,
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domain: domain || "This part of the Internet",
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});
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ctx.response.body = html;
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ctx.response.type = "text/html";
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});
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app.use(router.routes());
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app.use(router.allowedMethods());
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// Start server
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const port = 8080;
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console.log(`Server running on http://localhost:${port}`);
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await app.listen({ port });
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