add new subdomains

src/webapp.ts

@@ -1,8 +1,8 @@
 import { type Context, Hono } from "hono"
 import type { Child } from "hono/jsx"
 import { renderToString } from "hono/jsx/dom/server"
-import { join } from "node:path"
-import { readdirSync } from "node:fs"
+import { join } from "path"
+import { readdirSync, watch } from "fs"
 import { NOSE_WWW } from "./config"
 import { isFile } from "./utils"
 
@@ -70,22 +70,39 @@ export function toResponse(source: string | Child | Response): Response {
         })
 }
 
+//
+// dns nonsense
+//
+
+const dnsEntries: Record<string, any> = {}
+
+const { stdout: ipRaw } = await Bun.$`hostname -I | awk '{print $1}'`.quiet()
+const { stdout: hostRaw } = await Bun.$`hostname`.quiet()
+
+const ip = ipRaw.toString().trim()
+const host = hostRaw.toString().trim()
+
 export async function publishDNS() {
-    const { stdout: ipRaw } = await Bun.$`hostname -I | awk '{print $1}'`.quiet()
-    const { stdout: hostRaw } = await Bun.$`hostname`.quiet()
-
-    const ip = ipRaw.toString().trim()
-    const host = hostRaw.toString().trim()
-
-    const procs = apps().map(app =>
-        Bun.spawn(["avahi-publish", "-a", `${app}.${host}.local`, "-R", ip])
-    )
+    apps().forEach(publishAppDNS)
 
     const signals = ["SIGINT", "SIGTERM"]
     signals.forEach(sig =>
         process.on(sig, () => {
-            procs.forEach(p => p.kill("SIGTERM"))
-            process.exit(0)
+            for (const name in dnsEntries)
+                dnsEntries[name].kill("SIGTERM")
         })
     )
 }
+
+function publishAppDNS(app: string) {
+    if (process.env.BUN_HOT) return
+
+    if (!dnsEntries[app])
+        dnsEntries[app] = Bun.spawn(["avahi-publish", "-a", `${app}.${host}.local`, "-R", ip])
+
+    return dnsEntries[app]
+}
+
+const appWatcher = watch(NOSE_WWW, (event, filename) => {
+    apps().forEach(publishAppDNS)
+})