using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

namespace ZB.MOM.WW.ScadaBridge.Communication.Tests;

/// <summary>
/// Locks the config section <see cref="ServiceCollectionExtensions.AddCommunication"/>
/// binds (arch-review 08 round 2 NF8). Every real appsettings nests this section under
/// <c>ScadaBridge:</c>; binding a root-level <c>Communication</c> section reads config
/// that no deployment writes — the drift the Host duplicate was silently masking.
/// AddCommunication alone must bind the canonical <c>ScadaBridge:Communication</c> section.
/// </summary>
public class CommunicationOptionsBindingTests
{
    [Fact]
    public void AddCommunication_BindsTheScadaBridgeCommunicationSection()
    {
        var config = new ConfigurationBuilder().AddInMemoryCollection(new Dictionary<string, string?>
        {
            ["ScadaBridge:Communication:DeploymentTimeout"] = "00:01:23",
        }).Build();
        var services = new ServiceCollection();
        services.AddSingleton<IConfiguration>(config);
        services.AddCommunication();
        using var sp = services.BuildServiceProvider();
        Assert.Equal(TimeSpan.FromSeconds(83),
            sp.GetRequiredService<IOptions<CommunicationOptions>>().Value.DeploymentTimeout);
    }
}
