2025-02-22 16:38:11 -05:00
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import { contentType } from "jsr:@std/media-types";
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// Parse the port from the command-line arguments, defaulting to 8000
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const port = parseInt(Deno.args[0] || "8000", 10);
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const sockets: WebSocket[] = [];
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const connect = `<script>
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const ws = new WebSocket('ws://localhost:${port}/ws');
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ws.addEventListener('message', (event) => {
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if (event.data === 'reload') {
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window.location.reload();
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}
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});
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ws.addEventListener('error', console.error);
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ws.addEventListener('close', console.warn);
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</script>`;
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const bundle = await fetch(import.meta.resolve("./bundle.js")).then(r=>r.text());
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let html: string;
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try {
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html = Deno.readTextFileSync("./index.html").replace("<head>", "<head>"+connect);
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} catch (_) {
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html = `
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<!DOCTYPE html>
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<html lang="en">
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<head>
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${connect}
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style> * {margin: 0;padding: 0;box-sizing: border-box;}html, body {height: 100%;width: 100%;font-family: Arial, sans-serif;line-height: 1.6;}body {-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: grayscale;}img, video {max-width: 100%;height: auto;}a {text-decoration: none;color: inherit;}ul, ol {list-style: none;}button, input, textarea {font-family: inherit;font-size: inherit;line-height: inherit;border: none;background: none;padding: 0;margin: 0;outline: none;}table {border-collapse: collapse;width: 100%;}</style>
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<script>${bundle}</script>
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</head>
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<body></body>
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</html>`;
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}
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function extension(path: string): string {
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// Remove trailing slash if it exists
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const normalizedPath = path.endsWith("/") ? path.slice(0, -1) : path;
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// Get the last part of the path
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const lastPart = normalizedPath.split("/").pop() || "";
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// Check if the last part contains a "."
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return lastPart.split(".")[1] || "";
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}
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// Start the HTTP server using Deno.serve
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Deno.serve({ port }, async (req: Request) => {
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const url = new URL(req.url);
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// Handle WebSocket connections
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if (url.pathname === "/ws") {
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const { socket, response } = Deno.upgradeWebSocket(req);
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sockets.push(socket);
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return response;
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}
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// Serve static files or the predefined HTML for non-file routes
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const path = new URL(req.url).pathname;
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const ext = extension(path);
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// Serve the predefined HTML for non-file routes
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if (!ext) {
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return new Response(html, {
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headers: { "Content-Type": "text/html" },
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});
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}
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try {
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const file = await Deno.open("." + path, { read: true });
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return new Response(file.readable, {
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headers: { "Content-Type": contentType(ext) || "application/javascript" },
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});
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} catch (err) {
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if (err instanceof Deno.errors.NotFound) {
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return new Response("File not found", { status: 404 });
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} else {
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return new Response("Internal server error", { status: 500 });
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}
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}
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});
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// Start watching for file changes
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const watcher = Deno.watchFs(".");
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for await (const event of watcher) {
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if (event.kind === "modify") {
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for (const ws of sockets) {
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if (ws.readyState === WebSocket.OPEN) {
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ws.send("reload");
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2025-02-22 16:58:53 -05:00
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continue;
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2025-02-22 16:38:11 -05:00
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}
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}
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}
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}
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