Feature/add postinstall to db

packages/db/.env.example

@@ -0,0 +1 @@
+MONGODB_CONNECTION_STRING: mongodb://localhost:27017/embalse-info

packages/db/package.json

@@ -12,6 +12,7 @@
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "scripts": {
+    "postinstall": "node setup.js",
     "build": "run-p clean type-check build:db",
     "build:db": "tsc",
     "clean": "rimraf dist",

packages/db/setup.js

@@ -0,0 +1,26 @@
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const mongoDataPath = path.resolve(__dirname, "mongo-data");
+const envExamplePath = path.resolve(__dirname, ".env.example");
+const envPath = path.resolve(__dirname, ".env");
+
+try {
+  // Create directory mongo-data
+  if (!fs.existsSync(mongoDataPath)) {
+    fs.mkdirSync(mongoDataPath, { recursive: true });
+  }
+
+  // Copy .env.example a .env
+  if (!fs.existsSync(envPath)) {
+    if (fs.existsSync(envExamplePath)) {
+      fs.copyFileSync(envExamplePath, envPath);
+    }
+  }
+} catch (error) {
+  process.exit(1);
+}