using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using SeaHaven.Services.Configuration;
using SeaHaven.Services.DependencyInjection;
using Xunit;

namespace SeaHaven.Services.Tests;

public sealed class WorkOrderReconciliationOptionsTests
{
    [Fact]
    public void Enabled_reconciliation_rejects_a_lease_shorter_than_worst_case_request_budget()
    {
        var values = new Dictionary<string, string?>
        {
            ["WorkOrderReconciliation:Enabled"] = "true",
            ["WorkOrderReconciliation:RequestTimeoutSeconds"] = "30",
            ["WorkOrderReconciliation:MaxRetries"] = "3",
            ["WorkOrderReconciliation:RetryBaseDelayMilliseconds"] = "100",
            ["WorkOrderReconciliation:LeaseSeconds"] = "120"
        };

        using var provider = BuildProvider(values);

        Assert.Throws<OptionsValidationException>(() => provider
            .GetRequiredService<IOptions<WorkOrderReconciliationOptions>>().Value);
    }

    [Fact]
    public void Disabled_reconciliation_does_not_require_a_request_budget_lease()
    {
        var values = new Dictionary<string, string?>
        {
            ["WorkOrderReconciliation:Enabled"] = "false",
            ["WorkOrderReconciliation:LeaseSeconds"] = "1"
        };

        using var provider = BuildProvider(values);

        Assert.False(provider
            .GetRequiredService<IOptions<WorkOrderReconciliationOptions>>().Value.Enabled);
    }

    [Fact]
    public void Enabled_reconciliation_rejects_a_lease_equal_to_the_request_budget()
    {
        var values = new Dictionary<string, string?>
        {
            ["WorkOrderReconciliation:Enabled"] = "true",
            ["WorkOrderReconciliation:RequestTimeoutSeconds"] = "30",
            ["WorkOrderReconciliation:MaxRetries"] = "0",
            ["WorkOrderReconciliation:RetryBaseDelayMilliseconds"] = "0",
            ["WorkOrderReconciliation:LeaseSeconds"] = "30"
        };

        using var provider = BuildProvider(values);

        Assert.Throws<OptionsValidationException>(() => provider
            .GetRequiredService<IOptions<WorkOrderReconciliationOptions>>().Value);
    }

    private static ServiceProvider BuildProvider(IDictionary<string, string?> values)
    {
        var configuration = new ConfigurationBuilder()
            .AddInMemoryCollection(values)
            .Build();
        var services = new ServiceCollection();
        services.AddBusinessServices(configuration);
        return services.BuildServiceProvider();
    }
}