using Microsoft.Extensions.Diagnostics.HealthChecks;
using Microsoft.Extensions.Options;
using ZB.MOM.WW.ScadaBridge.Host.Health;
using ZB.MOM.WW.ScadaBridge.Transport;

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

/// <summary>ScadaBridge#110: the bundle-signing-policy readiness entry.</summary>
public sealed class BundleSigningPolicyHealthCheckTests
{
    private sealed class FixedMonitor(TransportOptions o) : IOptionsMonitor<TransportOptions>
    {
        public TransportOptions CurrentValue => o;
        public TransportOptions Get(string? name) => o;
        public IDisposable? OnChange(Action<TransportOptions, string?> listener) => null;
    }

    /// <summary>Degraded only when a production-boundary cluster accepts unsigned bundles.</summary>
    [Theory]
    [InlineData(true, false, HealthStatus.Degraded)]
    [InlineData(true, true, HealthStatus.Healthy)]
    [InlineData(false, false, HealthStatus.Healthy)]
    public async Task Status_follows_policy(bool boundary, bool require, HealthStatus expected)
    {
        var o = new TransportOptions();
        o.Signing.ProductionBoundary = boundary;
        o.Signing.RequireSignedBundles = require;

        var result = await new BundleSigningPolicyHealthCheck(new FixedMonitor(o))
            .CheckHealthAsync(new HealthCheckContext());

        Assert.Equal(expected, result.Status);
        Assert.Equal(boundary, result.Data["productionBoundary"]);
    }
}