initial commit

src/config.js

@@ -0,0 +1,29 @@
+import path from 'node:path';
+import fs from 'node:fs';
+import { fileURLToPath } from 'node:url';
+
+const projectRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+const resolveFromRoot = (value, fallback) => path.resolve(projectRoot, value || fallback);
+
+export const config = Object.freeze({
+  projectRoot,
+  host: process.env.HOST || '127.0.0.1',
+  port: Number.parseInt(process.env.PORT || '47145', 10),
+  instanceName: process.env.INSTANCE_NAME || 'Atlas',
+  dataDir: resolveFromRoot(process.env.DATA_DIR, 'data'),
+  storageDir: resolveFromRoot(process.env.STORAGE_DIR, 'storage'),
+  maxUploadBytes: Number.parseInt(process.env.MAX_UPLOAD_MB || '50', 10) * 1024 * 1024,
+  defaultRouteRadiusKm: Number.parseFloat(process.env.DEFAULT_ROUTE_RADIUS_KM || '25'),
+  defaultPoiTriggerMeters: Number.parseFloat(process.env.DEFAULT_POI_TRIGGER_METERS || '80')
+});
+
+export function ensureRuntimeDirectories() {
+  for (const directory of [
+    config.dataDir,
+    path.join(config.storageDir, 'active', 'routes'),
+    path.join(config.storageDir, 'trash', 'routes'),
+    path.join(config.storageDir, 'uploads')
+  ]) {
+    fs.mkdirSync(directory, { recursive: true });
+  }
+}