using Xunit;
using ZB.MOM.WW.OtOpcUa.Runtime.Historian;

namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Historian;

/// <summary>
///     Covers the gateway-shaped <see cref="ServerHistorianOptions.Validate"/> warnings: a disabled or
///     correctly-configured historian is silent; an enabled one with a blank <c>Endpoint</c> or blank
///     <c>ApiKey</c> surfaces an operator-facing warning (carrying no secret value text).
/// </summary>
public sealed class ServerHistorianOptionsTests
{
    [Fact]
    public void Disabled_yields_no_warnings()
        => Assert.Empty(new ServerHistorianOptions { Enabled = false }.Validate());

    [Fact]
    public void Enabled_without_endpoint_warns()
    {
        var w = new ServerHistorianOptions { Enabled = true, Endpoint = "", ApiKey = "histgw_x_y" }.Validate();
        Assert.Contains(w, m => m.Contains("Endpoint"));
    }

    [Fact]
    public void Enabled_without_apikey_warns()
    {
        var w = new ServerHistorianOptions { Enabled = true, Endpoint = "https://h:5222", ApiKey = "" }.Validate();
        Assert.Contains(w, m => m.Contains("ApiKey"));
    }

    [Fact]
    public void Valid_config_is_clean()
        => Assert.Empty(new ServerHistorianOptions { Enabled = true, Endpoint = "https://h:5222", ApiKey = "histgw_x_y" }.Validate());

    [Fact]
    public void Enabled_with_nonpositive_MaxTieClusterOverfetch_warns()
    {
        var w = new ServerHistorianOptions
        { Enabled = true, Endpoint = "https://h:5222", ApiKey = "histgw_x_y", MaxTieClusterOverfetch = 0 }
            .Validate();
        Assert.Contains(w, m => m.Contains("MaxTieClusterOverfetch"));
    }
}