web server

web-server/src/db.js

@@ -0,0 +1,49 @@
+const sql = require('mssql');
+
+let poolPromise;
+
+function boolFromEnv(value, fallback) {
+  if (value === undefined || value === null || value === '') return fallback;
+  return ['1', 'true', 'yes'].includes(String(value).toLowerCase());
+}
+
+function getConfig() {
+  return {
+    server: process.env.SQLSERVER_HOST || 'localhost',
+    port: Number(process.env.SQLSERVER_PORT || 1433),
+    database: process.env.SQLSERVER_DATABASE || 'RobotInstaller',
+    user: process.env.SQLSERVER_USER,
+    password: process.env.SQLSERVER_PASSWORD,
+    options: {
+      encrypt: boolFromEnv(process.env.SQLSERVER_ENCRYPT, false),
+      trustServerCertificate: boolFromEnv(process.env.SQLSERVER_TRUST_SERVER_CERTIFICATE, true)
+    },
+    pool: {
+      max: 10,
+      min: 0,
+      idleTimeoutMillis: 30000
+    }
+  };
+}
+
+async function getPool() {
+  if (!poolPromise) {
+    poolPromise = sql.connect(getConfig());
+  }
+
+  return poolPromise;
+}
+
+async function closePool() {
+  if (!poolPromise) return;
+
+  const pool = await poolPromise;
+  await pool.close();
+  poolPromise = undefined;
+}
+
+module.exports = {
+  sql,
+  getPool,
+  closePool
+};