using FinalFactory.Rendezvous.Contracts;
using FinalFactory.Rendezvous.Server.Provisioning;

namespace FinalFactory.Rendezvous.Tests.Provisioning;

public sealed class GamePolicyTests
{
    [Fact]
    public void RegistryFailsClosedForUnknownAndDisabledScopes()
    {
        GamePolicyRegistry registry = GamePolicyRegistry.Create(
        [
            ProvisioningTestData.CreatePolicy(),
            ProvisioningTestData.CreatePolicy("unscouted", "staging", enabled: false),
        ]);

        Assert.True(registry.TryGet(
            new GameId("space-game"),
            new EnvironmentId("production"),
            out _));
        Assert.False(registry.TryGet(
            new GameId("space-game"),
            new EnvironmentId("staging"),
            out _));
        Assert.False(registry.TryGet(
            new GameId("unscouted"),
            new EnvironmentId("staging"),
            out _));
    }

    [Fact]
    public void PerGamePolicyConstrainsProtocolMetadataQuotasAndFeatures()
    {
        GamePolicyRegistry registry = GamePolicyRegistry.Create(
            [ProvisioningTestData.CreatePolicy()]);
        Assert.True(registry.TryGet(
            new GameId("space-game"),
            new EnvironmentId("production"),
            out GamePolicy? policy));
        Assert.NotNull(policy);

        Assert.True(policy.AllowsProtocol(7));
        Assert.False(policy.AllowsProtocol(8));
        Assert.True(policy.AllowsRegion(new RegionId("eu-central")));
        Assert.False(policy.AllowsRegion(new RegionId("us-east")));
        Assert.True(policy.AllowsVisibility(ListingVisibility.Public));
        Assert.True(policy.AllowsPublisherTrust(PublisherTrustMode.PlayerGrant));
        Assert.Equal(FallbackPolicyMode.DedicatedEndpointAllowed, policy.FallbackPolicy);
        Assert.Equal(10, policy.MaxListingsPerPrincipal);
        Assert.Equal(1, policy.MaxAnonymousListingsPerAddress);
        Assert.Equal(100, policy.MaxActiveJoinAttempts);
        Assert.True(policy.AllowsMetadata(new Dictionary<string, string>
        {
            ["mode"] = "co-op",
            ["map"] = "europa",
        }));
        Assert.False(policy.AllowsMetadata(new Dictionary<string, string>
        {
            ["map"] = "europa",
        }));
        Assert.False(policy.AllowsMetadata(new Dictionary<string, string>
        {
            ["mode"] = "co-op",
            ["unknown"] = "value",
        }));
    }

    [Fact]
    public void InvalidOrDuplicatePolicyConfigurationFailsAtStartup()
    {
        GamePolicyOptions invalid = ProvisioningTestData.CreatePolicy();
        invalid.ProtocolVersions = [];
        Assert.Throws<ProvisioningConfigurationException>(() =>
            GamePolicyRegistry.Create([invalid]));

        Assert.Throws<ProvisioningConfigurationException>(() =>
            GamePolicyRegistry.Create(
            [
                ProvisioningTestData.CreatePolicy(),
                ProvisioningTestData.CreatePolicy(),
            ]));
    }
}