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

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

/// <summary>
/// Locks the config section <see cref="ServiceCollectionExtensions.AddDataConnectionLayer"/>
/// binds (arch-review 08 round 2 NF8). Every real appsettings nests this section under
/// <c>ScadaBridge:</c>; binding a root-level <c>DataConnectionLayer</c> section reads config
/// that no deployment writes — the drift the Host duplicate was silently masking.
/// AddDataConnectionLayer alone must bind the canonical <c>ScadaBridge:DataConnection</c> section.
/// </summary>
public class DataConnectionOptionsBindingTests
{
    [Fact]
    public void AddDataConnectionLayer_BindsTheScadaBridgeDataConnectionSection()
    {
        var config = new ConfigurationBuilder().AddInMemoryCollection(new Dictionary<string, string?>
        {
            ["ScadaBridge:DataConnection:ReconnectInterval"] = "00:00:42",
        }).Build();
        var services = new ServiceCollection();
        services.AddSingleton<IConfiguration>(config);
        services.AddDataConnectionLayer();
        using var sp = services.BuildServiceProvider();
        Assert.Equal(TimeSpan.FromSeconds(42),
            sp.GetRequiredService<IOptions<DataConnectionOptions>>().Value.ReconnectInterval);
    }
}
