refactor(infra): directory structure (#4615)

packages/backend/server/src/config/env.ts

@@ -0,0 +1,17 @@
+import { set } from 'lodash-es';
+
+import { type AFFiNEConfig, parseEnvValue } from './def';
+
+export function applyEnvToConfig(rawConfig: AFFiNEConfig) {
+  for (const env in rawConfig.ENV_MAP) {
+    const config = rawConfig.ENV_MAP[env];
+    const [path, value] =
+      typeof config === 'string'
+        ? [config, process.env[env]]
+        : [config[0], parseEnvValue(process.env[env], config[1])];
+
+    if (typeof value !== 'undefined') {
+      set(rawConfig, path, value);
+    }
+  }
+}