58}
59
60// Heartbeat function to check Discord API connection
61async function heartbeat() {
62 const DISCORD_BOT_TOKEN = Deno.env.get("DISCORD_BOT_TOKEN");
63
64 try {
65 const response = await fetch("https://discord.com/api/v10/users/@me", {
66 headers: {
67 Authorization: `Bot ${DISCORD_BOT_TOKEN}`,
76 SUM(num_images) as total_images
77 FROM ${USAGE_TABLE}
78 WHERE our_api_token = 1
79 GROUP BY user_id, username
80 ORDER BY total_price DESC
258 <th>Finish</th>
259 <th>Images</th>
260 <th>Our API</th>
261 </tr>
262 </thead>
278 <td>${row.finish_reason}</td>
279 <td>${formatNumber(row.num_images)}</td>
280 <td>${formatBoolean(row.our_api_token)}</td>
281 </tr>
282 `).join("")
48
49 // Register the commands
50 const response = await fetch(`https://discord.com/api/v10/${endpoint}`, {
51 method: "PUT",
52 headers: {
53You'll need to set up some environment variables to make it run.
54
55- `ANTHROPIC_API_KEY` for LLM calls
56- You'll need to follow [these instructions](https://docs.val.town/integrations/telegram/) to make a telegram bot, and set `TELEGRAM_TOKEN`. You'll also need to get a `TELEGRAM_CHAT_ID` in order to have the bot remember chat contents.
57- For the Google Calendar integration you'll need `GOOGLE_CALENDAR_ACCOUNT_ID` and `GOOGLE_CALENDAR_CALENDAR_ID`. See [these instuctions](https://www.val.town/v/stevekrouse/pipedream) for details.
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.
8import { type Memory } from "../../shared/types.ts";
9
10const API_BASE = "/api/memories";
11const MEMORIES_PER_PAGE = 20;
12
71 setError(null);
72 try {
73 const response = await fetch(API_BASE);
74 if (!response.ok) {
75 throw new Error(`HTTP error! status: ${response.status}`);
100
101 try {
102 const response = await fetch(API_BASE, {
103 method: "POST",
104 headers: { "Content-Type": "application/json" },
123
124 try {
125 const response = await fetch(`${API_BASE}/${id}`, {
126 method: "DELETE",
127 });
155
156 try {
157 const response = await fetch(`${API_BASE}/${editingMemory.id}`, {
158 method: "PUT",
159 headers: { "Content-Type": "application/json" },
18});
19
20// --- API Routes for Memories ---
21
22// GET /api/memories - Retrieve all memories
23app.get("/api/memories", async (c) => {
24 const memories = await getAllMemories();
25 return c.json(memories);
26});
27
28// POST /api/memories - Create a new memory
29app.post("/api/memories", async (c) => {
30 const body = await c.req.json<Omit<Memory, "id">>();
31 if (!body.text) {
36});
37
38// PUT /api/memories/:id - Update an existing memory
39app.put("/api/memories/:id", async (c) => {
40 const id = c.req.param("id");
41 const body = await c.req.json<Partial<Omit<Memory, "id">>>();
58});
59
60// DELETE /api/memories/:id - Delete a memory
61app.delete("/api/memories/:id", async (c) => {
62 const id = c.req.param("id");
63 try {
75// --- Blob Image Serving Routes ---
76
77// GET /api/images/:filename - Serve images from blob storage
78app.get("/api/images/:filename", async (c) => {
79 const filename = c.req.param("filename");
80
12 type="image/svg+xml"
13 />
14 <link rel="preconnect" href="https://fonts.googleapis.com" />
15 <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
16 <link
17 href="https://fonts.googleapis.com/css2?family=Pixelify+Sans:wght@400..700&display=swap"
18 rel="stylesheet"
19 />
85 console.log(e.text);
86
87 // Get Anthropic API key from environment
88 const apiKey = Deno.env.get("ANTHROPIC_API_KEY");
89 if (!apiKey) {
90 console.error("Anthropic API key is not configured for this val.");
91 return;
92 }
93
94 // Initialize Anthropic client
95 const anthropic = new Anthropic({ apiKey });
96
97 // Process each image attachment serially
92
93/**
94 * Format chat history for Anthropic API
95 */
96function formatChatHistoryForAI(history) {
321bot.on("message", async (ctx) => {
322 try {
323 // Get Anthropic API key from environment
324 const apiKey = Deno.env.get("ANTHROPIC_API_KEY");
325 if (!apiKey) {
326 console.error("Anthropic API key is not configured.");
327 ctx.reply(
328 "I apologize, but I'm not properly configured at the moment. Please inform the household administrator."
332
333 // Initialize Anthropic client
334 const anthropic = new Anthropic({ apiKey });
335
336 // Get message text and user info
502 // Set webhook if it is not set yet
503 if (!isEndpointSet) {
504 await bot.api.setWebhook(req.url, {
505 secret_token: SECRET_TOKEN,
506 });
