cvsa/packages/backend/src/startServer.ts

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import { serve } from "bun";
import { Hono } from "hono";
import os from "os";
import { BlankSchema, Variables } from "hono/types";
function getLocalIpAddress(): string {
const interfaces = os.networkInterfaces();
for (const name of Object.keys(interfaces)) {
for (const iface of interfaces[name]!) {
if (iface.family === "IPv4" && !iface.internal) {
return iface.address;
}
}
}
return "localhost";
}
function logStartup(hostname: string, port: number, wasAutoIncremented: boolean, originalPort: number) {
const localUrl = `http://localhost:${port}`;
const networkIp = hostname === "0.0.0.0" ? getLocalIpAddress() : "";
const networkUrl = networkIp ? `http://${networkIp}:${port}` : "";
console.log("\n");
console.log("🚀 Server is running at:");
console.log(`> Local: ${localUrl}`);
if (networkIp) {
console.log(`> Network: ${networkUrl}`);
}
if (wasAutoIncremented) {
console.log(`\n⚠ Port ${originalPort} is in use, using port ${port} instead.`);
}
console.log("\nPress Ctrl+C to quit.");
}
export async function startServer(app: Hono<{ Variables: Variables }>) {
const NODE_ENV = process.env.NODE_ENV || "production";
const HOST = process.env.HOST ?? (NODE_ENV === "development" ? "0.0.0.0" : "127.0.0.1");
const PORT = process.env.PORT ? parseInt(process.env.PORT, 10) : undefined;
const DEFAULT_PORT = 3000;
const MAX_ATTEMPTS = 15;
if (PORT !== undefined) {
try {
const server = serve({
fetch: app.fetch,
hostname: HOST,
port: PORT
});
logStartup(HOST, PORT, false, DEFAULT_PORT);
return server;
} catch (e: any) {
console.error(`Failed to start server on port ${PORT}:`, e.message);
process.exit(1);
}
}
let attemptPort = DEFAULT_PORT;
let success = false;
let error: unknown = null;
for (let i = 0; i <= MAX_ATTEMPTS; i++) {
try {
const server = serve({
fetch: app.fetch,
hostname: HOST,
port: attemptPort
});
const wasAutoIncremented = attemptPort !== DEFAULT_PORT;
logStartup(HOST, attemptPort, wasAutoIncremented, DEFAULT_PORT);
return server;
} catch (e: any) {
if (e.code === "EADDRINUSE") {
attemptPort++;
} else {
error = e;
break;
}
}
}
if (!success) {
console.error(`Could not find an available port after ${MAX_ATTEMPTS + 1} attempts.`);
if (error) {
console.error("Last error:", (error as Error).message);
}
process.exit(1);
}
}