first commit

config/database.js

@@ -0,0 +1,60 @@
+import mongoose from "mongoose";
+import { config } from "./index.js";
+
+let isConnected = false;
+
+export const connectDatabase = async () => {
+  if (isConnected) {
+    console.log("📦 Using existing database connection");
+    return;
+  }
+
+  try {
+    const options = {
+      maxPoolSize: 10,
+      serverSelectionTimeoutMS: 5000,
+      socketTimeoutMS: 45000,
+    };
+
+    await mongoose.connect(config.mongodb.uri, options);
+
+    isConnected = true;
+
+    console.log("✅ MongoDB connected successfully");
+
+    mongoose.connection.on("error", (err) => {
+      console.error("❌ MongoDB connection error:", err);
+      isConnected = false;
+    });
+
+    mongoose.connection.on("disconnected", () => {
+      console.warn("⚠️ MongoDB disconnected");
+      isConnected = false;
+    });
+
+    process.on("SIGINT", async () => {
+      await mongoose.connection.close();
+      console.log("🔌 MongoDB connection closed through app termination");
+      process.exit(0);
+    });
+  } catch (error) {
+    console.error("❌ Error connecting to MongoDB:", error);
+    process.exit(1);
+  }
+};
+
+export const disconnectDatabase = async () => {
+  if (!isConnected) {
+    return;
+  }
+
+  try {
+    await mongoose.connection.close();
+    isConnected = false;
+    console.log("🔌 MongoDB disconnected");
+  } catch (error) {
+    console.error("❌ Error disconnecting from MongoDB:", error);
+  }
+};
+
+export default { connectDatabase, disconnectDatabase };