feat: add Azure Speech voice mode

src/server/index.ts

@@ -1,7 +1,21 @@
 #!/usr/bin/env node
+import { readFileSync } from "node:fs";
 import { effectivePiWebConfig, maxUploadBytes } from "../config.js";
 import { buildApp } from "./app.js";
 
 const { config } = effectivePiWebConfig();
-const app = await buildApp({ bodyLimit: maxUploadBytes(process.env, config) });
+const app = await buildApp({
+  bodyLimit: maxUploadBytes(process.env, config),
+  ...tlsOptions(process.env),
+});
 await app.listen({ port: config.port ?? 8504, host: config.host ?? "127.0.0.1" });
+
+function tlsOptions(env: NodeJS.ProcessEnv): { https?: { key: Buffer; cert: Buffer } } {
+  const keyPath = env["PI_WEB_TLS_KEY"];
+  const certPath = env["PI_WEB_TLS_CERT"];
+  if ((keyPath === undefined || keyPath === "") && (certPath === undefined || certPath === "")) return {};
+  if (keyPath === undefined || keyPath === "" || certPath === undefined || certPath === "") {
+    throw new Error("Set both PI_WEB_TLS_KEY and PI_WEB_TLS_CERT to enable HTTPS.");
+  }
+  return { https: { key: readFileSync(keyPath), cert: readFileSync(certPath) } };
+}