Replace in-memory with bson product dao

Author: izzat5233

Configuration.cs

@@ -1,5 +1,7 @@
+using MongoDB.Driver;
 using SimpleInventoryManagementSystem.Controller;
 using SimpleInventoryManagementSystem.DAO;
+using SimpleInventoryManagementSystem.Domain;
 using SimpleInventoryManagementSystem.Interfaces;
 using SimpleInventoryManagementSystem.Repository;
 
@@ -9,6 +11,21 @@ public static class Configuration
 {
     public static IUserController BuildUserController()
     {
-        return new UserController(new ProductRepository(new MemoryProductDao()));
+        return new UserController(new ProductRepository(BuildProductDao()));
+    }
+
+    private static IProductDao BuildProductDao()
+    {
+        var connectionString = Environment.GetEnvironmentVariable("MONGODB_CONNECTION_STRING");
+        if (connectionString == null)
+        {
+            throw new IOException("MONGODB_CONNECTION_STRING environmental variable was not found");
+        }
+
+        var client = new MongoClient(connectionString);
+        var database = client.GetDatabase("Inventory");
+        var productsCollection = database.GetCollection<Product>("Products");
+
+        return new BsonProductDao(productsCollection);
     }
 }