// This example shows how to allow only authenticated access to the OPC server, with username & password. It also shows how
// to create a user and assign it an initial password.
// You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server. 
//
// Find all latest examples here: https://www.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
// OPC client, server and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-CSharp .
// Missing some example? Ask us for it on our Online Forums, https://forum.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

using OpcLabs.EasyOpc.UA;
using OpcLabs.EasyOpc.UA.NodeSpace;
using System;
using OpcLabs.BaseLib.Security.User;
using OpcLabs.BaseLib.Security.User.Extensions;

namespace UAServerDocExamples.AccessControl
{
    internal partial class UserIdentityTokens
    {
        public static void UserNameOnly()
        {
            // Instantiate the server object.
            // By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
            var server = new EasyUAServer();

            // By default, the server allows all user identity token types. In this example, we will allow only username &
            // password user identity tokens.
            server.UserIdentityTokenTypes = UserIdentityTokenTypes.UserName;

            // Create a user with username "user1" and password "pass". Without specifying security role IDs, the user
            // session will be assigned implicit Anonymous, AuthenticatedUser and possibly TrustedApplication roles.
            server.UserManagers.NameAndPassword.Create("user1", "pass");

            // Define a data variable providing random integers.
            var random = new Random();
            server.Add(new UADataVariable("MyDataVariable").ReadValueFunction(() => random.Next()));

            // Start the server.
            Console.WriteLine("The server is starting...");
            server.Start();

            Console.WriteLine("The server is started.");
            Console.WriteLine();

            // Let the user decide when to stop.
            Console.WriteLine("Press Enter to stop the server...");
            Console.ReadLine();

            // Stop the server.
            Console.WriteLine("The server is stopping...");
            server.Stop();

            Console.WriteLine("The server is stopped.");
        }
    }
}