initial commit

index.js

@@ -0,0 +1,85 @@
+import express from "express";
+import http from "http";
+import { WebSocketServer } from "ws";
+import cors from "cors";
+import pkg from "pg";
+
+const { Pool } = pkg;
+
+const app = express();
+const PORT = 3000;
+
+// Setup Postgres connection pool
+const pool = new Pool({
+  connectionString: process.env.DATABASE_URL || "neverleavetheconnectionstringhereforproduction",
+});
+
+app.use(cors());
+
+// HTTP GET /games/:id → return game info from DB
+app.get("/games/:id", async (req, res) => {
+  const gameId = req.params.id;
+  try {
+    const result = await pool.query("SELECT info FROM items WHERE id = $1", [gameId]);
+    if (result.rows.length === 0) {
+      return res.redirect(302, "https://engine.battlesnake.com");
+      // return res.status(404).json({ error: "Game not found" });
+
+    }
+    res.json(result.rows[0].info); // send back the JSONB field
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: "Database error" });
+  }
+});
+
+// Create HTTP server and attach WebSocket server
+const server = http.createServer(app);
+const wss = new WebSocketServer({ server });
+
+// Helper to match the path pattern
+function matchGameEventsPath(url) {
+  if (!url) return null;
+  const match = url.match(/^\/games\/([^\/]+)\/events$/);
+  return match ? match[1] : null;
+}
+
+wss.on("connection", async (ws, req) => {
+  const gameId = matchGameEventsPath(req.url);
+  if (!gameId) {
+    ws.close();
+    return;
+  }
+
+  console.log(`WS client connected for game: ${gameId}`);
+
+  try {
+    // Grab frames array from DB
+    const result = await pool.query("SELECT frames FROM items WHERE id = $1", [gameId]);
+    if (result.rows.length === 0) {
+      ws.send(JSON.stringify({ error: "Game not found" }));
+      ws.close();
+      return;
+    }
+
+    const frames = result.rows[0].frames || [];
+
+    // Stream frames one by one with delay
+    frames.forEach((frame, i) => {
+      setTimeout(() => {
+        if (ws.readyState === ws.OPEN) {
+          ws.send(JSON.stringify(frame));
+        }
+      }, i * 5); // staggered delay
+    });
+
+  } catch (err) {
+    console.error(err);
+    ws.send(JSON.stringify({ error: "Database error" }));
+    ws.close();
+  }
+});
+
+server.listen(PORT, "0.0.0.0", () => {
+  console.log(`Server running at http://localhost:${PORT} (HTTP + WebSocket)`);
+});