223app.get("/frontend/**/*", c => serveFile(c.req.path, import.meta.url));
224
225// Add your API routes here
226// app.get("/api/data", c => c.json({ hello: "world" }));
227
228// Unwrap and rethrow Hono errors as the original error
4export function App() {
5 const [projectUrl, setProjectUrl] = useState("");
6 const [apiToken, setApiToken] = useState("");
7 const [loading, setLoading] = useState(false);
8 const [message, setMessage] = useState("");
21 }
22
23 if (!apiToken.trim()) {
24 throw new Error("API Token is required");
25 }
26
28 method: "POST",
29 headers: {
30 "Authorization": `Bearer ${apiToken}`,
31 "Content-Type": "application/json",
32 },
63 value={projectUrl}
64 onChange={(e) => setProjectUrl(e.target.value)}
65 placeholder="https://api.val.town/v1/projects/..."
66 className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-purple-500"
67 />
69
70 <div>
71 <label htmlFor="apiToken" className="block text-sm font-medium text-gray-700 mb-1">
72 Val Town API Token (project read + write permissions)
73 </label>
74 <input
75 id="apiToken"
76 type="password"
77 value={apiToken}
78 onChange={(e) => setApiToken(e.target.value)}
79 placeholder="Enter your API token"
80 className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-purple-500"
81 />
8## Hono
9
10This app uses [Hono](https://hono.dev/) as the API framework. You can think of Hono as a replacement for [ExpressJS](https://expressjs.com/) that works in serverless environments like Val Town or Cloudflare Workers. If you come from Python or Ruby, Hono is also a lot like [Flask](https://github.com/pallets/flask) or [Sinatra](https://github.com/sinatra/sinatra), respectively.
11
12## Serving assets to the frontend
20### `index.html`
21
22The most complicated part of this backend API is serving index.html. In this app (like most apps) we serve it at the root, ie `GET /`.
23
24We *bootstrap* `index.html` with some initial data from the server, so that it gets dynamically injected JSON data without having to make another round-trip request to the server to get that data on the frontend. This is a common pattern for client-side rendered apps.
25
26## CRUD API Routes
27
28This app has two CRUD API routes: for reading and inserting into the messages table. They both speak JSON, which is standard. They import their functions from `/backend/database/queries.ts`. These routes are called from the React app to refresh and update data.
29
30## Errors
31
32Hono and other API frameworks have a habit of swallowing up Errors. We turn off this default behavior by re-throwing errors, because we think most of the time you'll want to see the full stack trace instead of merely "Internal Server Error". You can customize how you want errors to appear.
11 },
12 {
13 "prompt": "weather dashboard for nyc using open-meteo API for NYC with icons",
14 "title": "Weather App",
15 "code": "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>NYC Weather</title>\n <link href=\"https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css\" rel=\"stylesheet\">\n <style>\n .weather-icon {\n font-size: 48px;\n margin-bottom: 16px;\n }\n </style>\n</head>\n<body class=\"h-screen bg-blue-100 flex justify-center items-center p-4\">\n <div class=\"bg-white p-8 rounded-md shadow-md w-full max-w-sm md:p-12 lg:p-16 xl:p-20\">\n <h1 class=\"text-2xl font-bold mb-4 text-center text-blue-500\">NYC Weather</h1>\n <div id=\"weather\" class=\"mb-4 p-4 text-center\">\n <div id=\"temperature\" class=\"text-4xl font-bold mb-4\"></div>\n <div id=\"condition\" class=\"text-xl font-medium mb-4\"></div>\n <div id=\"humidity\" class=\"text-lg font-light mb-2\">Humidity: <span id=\"humidity-value\"></span>%</div>\n <div id=\"wind\" class=\"text-lg font-light mb-2\">Wind: <span id=\"wind-value\"></span> mph</div>\n <i id=\"weather-icon\" class=\"weather-icon text-blue-500\"></i>\n </div>\n </div>\n <p class=\"fixed bottom-0 left-0 right-0 text-center p-4 text-gray-600 md:p-6 lg:p-8 xl:p-10\">\n Built on <a class=\"text-blue-600\" href=\"https://cerebrascoder.com\">Cerebras Coder</a>\n </p>\n\n <script>\n // Sample weather data\n const weatherData = {\n temperature: 75,\n condition: 'Sunny',\n humidity: 60,\n wind: 10,\n icon: 'sun'\n };\n\n document.getElementById('temperature').innerText = `${weatherData.temperature}°F`;\n document.getElementById('condition').innerText = weatherData.condition;\n document.getElementById('humidity-value').innerText = weatherData.humidity;\n document.getElementById('wind-value').innerText = weatherData.wind;\n\n // Map weather icon\n const weatherIcons = {\n 'sun': '☀',\n 'cloud': '☀',\n 'rain': '☃',\n 'snow': '☄'\n };\n\n document.getElementById('weather-icon').innerHTML = weatherIcons[weatherData.icon] || '';\n </script>\n</body>\n</html>",
8
91. Sign up for [Cerebras](https://cloud.cerebras.ai/)
102. Get a Cerebras API Key
113. Save it in your project env variable called `CEREBRAS_API_KEY`
5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
6 <title>CerebrasCoder</title>
7 <link rel="preconnect" href="https://fonts.googleapis.com" />
8 <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
9 <link
10 href="https://fonts.googleapis.com/css2?family=DM+Mono:ital,wght@0,300;0,400;0,500;1,300;1,400;1,500&family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap"
11 rel="stylesheet"
12 />
21 <meta property="og:description" content="Turn your ideas into fully functional apps in less than a second – powered by Llama3.3-70b on Cerebras's super-fast wafer chips. Code is 100% open-source, hosted on Val Town."">
22 <meta property="og:type" content="website">
23 <meta property="og:image" content="https://stevekrouse-blob_admin.web.val.run/api/public/CerebrasCoderOG.jpg">
24
25
211 } catch (error) {
212 Toastify({
213 text: "We may have hit our Cerebras Usage limits. Try again later or fork this and use your own API key.",
214 position: "center",
215 duration: 3000,
16 };
17 } else {
18 const client = new Cerebras({ apiKey: Deno.env.get("CEREBRAS_API_KEY") });
19 const completion = await client.chat.completions.create({
20 messages: [
2import React from "https://esm.sh/react";
3import { renderToString } from "https://esm.sh/react-dom/server";
4import GetWeather, { type WEATHER_FORECAST } from "../api/weather.ts";
5import { BodyWrapper, Content, Footer, Header, Headline } from "../components.tsx";
6
34 const url = new URL(req.url);
35
36 const apiUrl =
37 `https://api.open-meteo.com/v1/forecast?latitude=${latitude}&longitude=${longitude}¤t_weather=true&temperature_unit=fahrenheit`;
38 const cacheKey = `weather-forecast-${latitude}-${longitude}`;
39
40 // Cache for 30 minutes
41 const data: WEATHER_FORECAST = await fetchWithCache(apiUrl, cacheKey, 30).then((res) => res.json());
42 return new Response(JSON.stringify(data), {
43 headers: {
