using Microsoft.Extensions.Configuration;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Security.Ldap;

namespace ZB.MOM.WW.OtOpcUa.Host.IntegrationTests;

/// <summary>
/// Regression guard for the LDAP config-section fix. The real config (admin/driver/Development
/// overlays) lives under <c>Security:Ldap</c>, and <see cref="LdapOptions.SectionName"/> must point
/// there so the configured <c>DevStubMode</c> actually binds. Previously the binders used the
/// nonexistent <c>"Ldap"</c>/<c>"Authentication:Ldap"</c> sections, so the dev stub never activated.
/// </summary>
public sealed class LdapOptionsBindingTests
{
    /// <summary><see cref="LdapOptions.SectionName"/> resolves to the real overlay section.</summary>
    [Fact]
    public void SectionName_is_Security_Ldap()
    {
        LdapOptions.SectionName.ShouldBe("Security:Ldap");
    }

    /// <summary>
    /// Binding from <see cref="LdapOptions.SectionName"/> reads the configured <c>DevStubMode</c>
    /// from the real <c>Security:Ldap</c> section — proving the dev stub now takes effect.
    /// </summary>
    [Fact]
    public void Binding_from_SectionName_reads_Security_Ldap_DevStubMode()
    {
        var configuration = new ConfigurationBuilder()
            .AddInMemoryCollection(new Dictionary<string, string?>
            {
                ["Security:Ldap:DevStubMode"] = "true",
            })
            .Build();

        var options = configuration.GetSection(LdapOptions.SectionName).Get<LdapOptions>();

        options.ShouldNotBeNull();
        options.DevStubMode.ShouldBeTrue();
    }

    /// <summary>
    /// Negative control: binding from the old (nonexistent) <c>"Ldap"</c> section against the same
    /// <c>Security:Ldap</c> config does NOT pick up <c>DevStubMode</c> — it falls back to the C#
    /// default (false). This is the pre-fix behaviour the change corrects.
    /// </summary>
    [Fact]
    public void Binding_from_old_Ldap_section_does_not_read_DevStubMode()
    {
        var configuration = new ConfigurationBuilder()
            .AddInMemoryCollection(new Dictionary<string, string?>
            {
                ["Security:Ldap:DevStubMode"] = "true",
            })
            .Build();

        var options = configuration.GetSection("Ldap").Get<LdapOptions>() ?? new LdapOptions();

        options.DevStubMode.ShouldBeFalse();
    }
}