api: dynamic env reloading from path/url

api/src/config.js

@@ -1,18 +1,34 @@
 import { getVersion } from "@imput/version-info";
-import { loadEnvs, validateEnvs } from "./core/env.js";
+import { loadEnvs, validateEnvs, setupEnvWatcher } from "./core/env.js";
+import * as cluster from "./misc/cluster.js";
 
 const version = await getVersion();
 
-let env = loadEnvs();
+const env = loadEnvs();
 
 const genericUserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36";
 const cobaltUserAgent = `cobalt/${version} (+https://github.com/imputnet/cobalt)`;
 
+export const canonicalEnv = Object.freeze(structuredClone(process.env));
 export const setTunnelPort = (port) => env.tunnelPort = port;
 export const isCluster = env.instanceCount > 1;
+export const updateEnv = (newEnv) => {
+    // tunnelPort is special and needs to get carried over here
+    newEnv.tunnelPort = env.tunnelPort;
+
+    for (const key in env) {
+        env[key] = newEnv[key];
+    }
+
+    cluster.broadcast({ env_update: newEnv });
+}
 
 await validateEnvs(env);
 
+if (env.envFile) {
+    setupEnvWatcher();
+}
+
 export {
     env,
     genericUserAgent,