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

namespace FinalFactory.Rendezvous.Tests.Provisioning;

public sealed class PublisherAuthorizationTests
{
    private static readonly IReadOnlyDictionary<string, string> ValidMetadata =
        new Dictionary<string, string>(StringComparer.Ordinal)
        {
            ["mode"] = "co-op",
            ["map"] = "europa",
        };

    [Fact]
    public void AuthoritativeScopeComesFromThePublisherPrincipal()
    {
        PublisherAuthorizationService service = CreateService();
        DedicatedPublisherPrincipal principal = ProvisioningTestData.CreateDedicatedPublisher();

        PublisherAuthorizationResult result = service.Authorize(
            principal,
            new GameId("space-game"),
            new EnvironmentId("production"),
            new RegionId("eu-central"),
            7,
            ListingVisibility.Public,
            ValidMetadata,
            ProvisioningTestData.Now);

        Assert.True(result.IsAllowed);
        Assert.NotNull(result.Context);
        Assert.Equal(principal.GameId, result.Context.GameId);
        Assert.Equal(principal.EnvironmentId, result.Context.EnvironmentId);
    }

    [Theory]
    [InlineData("unscouted", "production")]
    [InlineData("space-game", "staging")]
    public void CrossGameAndEnvironmentScopeEscalationIsDenied(
        string requestedGame,
        string requestedEnvironment)
    {
        PublisherAuthorizationResult result = CreateService().Authorize(
            ProvisioningTestData.CreateDedicatedPublisher(),
            new GameId(requestedGame),
            new EnvironmentId(requestedEnvironment),
            new RegionId("eu-central"),
            7,
            ListingVisibility.Public,
            ValidMetadata,
            ProvisioningTestData.Now);

        Assert.False(result.IsAllowed);
        Assert.Equal(PublisherAuthorizationError.ScopeMismatch, result.Error);
        Assert.Null(result.Context);
    }

    [Fact]
    public void OperatorCannotBeUsedAsAGamePublisher()
    {
        OperatorPrincipal principal = new(
            "operator-1",
            ProvisioningTestData.Now.AddMinutes(10),
            new HashSet<OperatorPermission> { OperatorPermission.ReadPolicy });

        PublisherAuthorizationResult result = CreateService().Authorize(
            principal,
            new GameId("space-game"),
            new EnvironmentId("production"),
            new RegionId("eu-central"),
            7,
            ListingVisibility.Public,
            ValidMetadata,
            ProvisioningTestData.Now);

        Assert.Equal(PublisherAuthorizationError.NotPublisher, result.Error);
    }

    [Fact]
    public void AnonymousPublisherCanNeverEscalateToPublicVisibility()
    {
        AnonymousUnlistedPrincipal principal = new(
            "anonymous-source-1",
            ProvisioningTestData.Now.AddMinutes(2),
            new GameId("space-game"),
            new EnvironmentId("production"),
            new HashSet<RegionId> { new("eu-central") });

        PublisherAuthorizationResult result = CreateService().Authorize(
            principal,
            principal.GameId,
            principal.EnvironmentId,
            new RegionId("eu-central"),
            7,
            ListingVisibility.Public,
            ValidMetadata,
            ProvisioningTestData.Now);

        Assert.Equal(PublisherAuthorizationError.AnonymousMustBeUnlisted, result.Error);
    }

    [Fact]
    public void ExpiredPrincipalIsRecheckedAtAuthorizationTime()
    {
        DedicatedPublisherPrincipal principal = ProvisioningTestData.CreateDedicatedPublisher(
            ProvisioningTestData.Now.AddSeconds(-1));

        PublisherAuthorizationResult result = CreateService().Authorize(
            principal,
            principal.GameId,
            principal.EnvironmentId,
            new RegionId("eu-central"),
            7,
            ListingVisibility.Public,
            ValidMetadata,
            ProvisioningTestData.Now);

        Assert.Equal(PublisherAuthorizationError.PrincipalExpired, result.Error);
    }

    private static PublisherAuthorizationService CreateService() => new(
        GamePolicyRegistry.Create([ProvisioningTestData.CreatePolicy()]));
}