Database class for server side swift project

Database.swift

import PerfectHTTP
import PerfectHTTPServer
import PerfectMySQL
import Foundation

public class DB {
    
    // You'll need to update these values based on how you've set up MySQL.
    let host = "127.0.0.1"
    let user = "root"
    let password = "admin"
    let database = "nintendo"
   
    func databaseConnect(host: String, user: String, password: String, db: String) -> MySQL {
        
        let mysql = MySQL() // Create an instance of MySQL to work with
        
        let connected = mysql.connect(host: host, user: user, password: password, db: db)
        
        guard connected else {
            // verify that we have connected successfully
            print(mysql.errorMessage())
            return mysql
        }
        
        return mysql
    }
    
    public func insertGame(title: String, description: String, createdDate: String){
    
        // Connect to our database
        var db = databaseConnect(host: host, user: user, password: password, db: database)
        
        defer {
            db.close() //This defer block makes sure we terminate the connection once finished, regardless of the result
        }
        
        // Create the statement we wish to execute
        let statement = MySQLStmt(db)
        let insert = "INSERT INTO game(id, title, description, release_date) VALUES (\(statement.insertId()), '\(title)', '\(description)', '\(createdDate)');"
        _ = statement.prepare(statement: insert)
        
        // Run the query
        let querySuccess = statement.execute()
        
        // Check that our query was successfuly, otherwise return out
        guard querySuccess else {
            print(db.errorMessage())
            return
        }
        
        print("Insert successful!");
    }
    
}