using Evergreen.Health.Application.Health.Integrations.Ib43;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using Xunit;

namespace Admin.NET.Test.Health;

[CollectionDefinition("Ib43Environment", DisableParallelization = true)]
public sealed class Ib43EnvironmentCollection { }

[Collection("Ib43Environment")]
public sealed class Ib43ConfigurationTests
{
    [Fact]
    public void Environment_overrides_defaults_after_binding_and_before_validation()
    {
        var names = new[] { "Ib43__Enabled", "Ib43__Password" };
        var original = names.Select(Environment.GetEnvironmentVariable).ToArray();
        try
        {
            Environment.SetEnvironmentVariable(names[0], "true");
            Environment.SetEnvironmentVariable(names[1], "test-only-secret");
            var services = new ServiceCollection();
            services.AddOptions<Ib43Options>().Configure(options =>
            {
                options.Enabled = false; options.Password = "";
                options.Devices = [new() { ProductKey = "test", SerialNumber = "sim" }];
            }).PostConfigure(Ib43Configuration.ApplyEnvironmentOverrides)
              .Validate(options => options.IsValid());
            using var provider = services.BuildServiceProvider();
            var options = provider.GetRequiredService<IOptions<Ib43Options>>().Value;
            Assert.True(options.Enabled);
            Assert.Equal("test-only-secret", options.Password);
            Assert.Single(options.Devices);

            Environment.SetEnvironmentVariable(names[0], null);
            Environment.SetEnvironmentVariable(names[1], null);
            var defaults = new Ib43Options();
            Ib43Configuration.ApplyEnvironmentOverrides(defaults);
            Assert.False(defaults.Enabled);
            Assert.Empty(defaults.Password);
        }
        finally
        {
            for (var i = 0; i < names.Length; i++) Environment.SetEnvironmentVariable(names[i], original[i]);
        }
    }
}