using FinalFactory.Rendezvous.Contracts;
using FinalFactory.Rendezvous.Server.ConnectionOutcomes;
using FinalFactory.Rendezvous.Tests.JoinAttempts;

namespace FinalFactory.Rendezvous.Tests.ConnectionOutcomes;

public sealed class ConnectionOutcomeServiceTests
{
    [Fact]
    public void ReportRemainsAuthenticatedAfterAttemptExpiryAndCountsOnlyOnce()
    {
        using JoinAttemptFixture fixture = new();
        (RegisterSessionResponse registration, _) = fixture.CreateHost();
        CreateJoinAttemptResponse attempt = fixture.Create(registration.ListingId);
        ConnectionOutcomeMetrics metrics = new();
        ConnectionOutcomeService service = new(
            fixture.Sessions.Store,
            fixture.Sessions.Capabilities,
            metrics);
        ReportConnectionOutcomeRequest report = new()
        {
            Outcome = ConnectionOutcomeKind.PunchTimedOut,
            ElapsedBucket = ConnectionElapsedBucket.FiveToFifteenSeconds,
        };
        fixture.Sessions.Clock.Advance(fixture.Sessions.StoreOptions.JoinAttemptLifetime);

        ConnectionOutcomeServiceResult first = service.Report(
            attempt.AttemptId,
            attempt.ClientPunchCapability,
            report);
        ConnectionOutcomeServiceResult duplicate = service.Report(
            attempt.AttemptId,
            attempt.ClientPunchCapability,
            report);
        ConnectionOutcomeServiceResult conflict = service.Report(
            attempt.AttemptId,
            attempt.ClientPunchCapability,
            new ReportConnectionOutcomeRequest
            {
                Outcome = ConnectionOutcomeKind.Connected,
                ElapsedBucket = ConnectionElapsedBucket.FiveToFifteenSeconds,
            });

        Assert.True(first.Succeeded);
        Assert.False(first.Value!.IsDuplicate);
        Assert.True(duplicate.Succeeded);
        Assert.True(duplicate.Value!.IsDuplicate);
        Assert.Equal(RendezvousErrorCode.ReplayRejected, conflict.Error);
        Assert.Equal(
            1,
            metrics.GetCount(
                ConnectionOutcomeKind.PunchTimedOut,
                ConnectionElapsedBucket.FiveToFifteenSeconds));
        Assert.Equal(
            RendezvousErrorCode.NotFound,
            service.Report(
                attempt.AttemptId,
                new string('X', ContractLimits.DerivedCredentialCharacters),
                report).Error);
    }

    [Theory]
    [InlineData(ConnectionOutcomeKind.DirectoryNotFound)]
    [InlineData(ConnectionOutcomeKind.IncompatibleProtocol)]
    [InlineData(ConnectionOutcomeKind.Unauthorized)]
    [InlineData(ConnectionOutcomeKind.RateLimited)]
    public void ReportRejectsOutcomesThatCouldNotHaveAnIssuedAttempt(
        ConnectionOutcomeKind outcome)
    {
        using JoinAttemptFixture fixture = new();
        (RegisterSessionResponse registration, _) = fixture.CreateHost();
        CreateJoinAttemptResponse attempt = fixture.Create(registration.ListingId);
        ConnectionOutcomeService service = new(
            fixture.Sessions.Store,
            fixture.Sessions.Capabilities,
            new ConnectionOutcomeMetrics());

        ConnectionOutcomeServiceResult result = service.Report(
            attempt.AttemptId,
            attempt.ClientPunchCapability,
            new ReportConnectionOutcomeRequest
            {
                Outcome = outcome,
                ElapsedBucket = ConnectionElapsedBucket.UnderOneSecond,
            });

        Assert.Equal(RendezvousErrorCode.InvalidRequest, result.Error);
    }

    [Fact]
    public void ListingDeletionRemovesRetainedOutcomeAuthorization()
    {
        using JoinAttemptFixture fixture = new();
        (RegisterSessionResponse registration, _) = fixture.CreateHost();
        CreateJoinAttemptResponse attempt = fixture.Create(registration.ListingId);
        ConnectionOutcomeService service = new(
            fixture.Sessions.Store,
            fixture.Sessions.Capabilities,
            new ConnectionOutcomeMetrics());

        Assert.True(fixture.Sessions.Store.RevokeListing(registration.ListingId).Succeeded);

        Assert.Equal(
            RendezvousErrorCode.NotFound,
            service.Report(
                attempt.AttemptId,
                attempt.ClientPunchCapability,
                new ReportConnectionOutcomeRequest
                {
                    Outcome = ConnectionOutcomeKind.Cancelled,
                    ElapsedBucket = ConnectionElapsedBucket.UnderOneSecond,
                }).Error);
    }

    [Fact]
    public void PrincipalRevocationRemovesReportAuthorizationAfterAttemptExpiry()
    {
        using JoinAttemptFixture fixture = new();
        (RegisterSessionResponse registration, _) = fixture.CreateHost();
        CreateJoinAttemptResponse attempt = fixture.Create(registration.ListingId);
        ConnectionOutcomeService service = new(
            fixture.Sessions.Store,
            fixture.Sessions.Capabilities,
            new ConnectionOutcomeMetrics());
        fixture.Sessions.Clock.Advance(fixture.Sessions.StoreOptions.JoinAttemptLifetime);

        Assert.True(fixture.Sessions.Store.RevokePrincipal(
            fixture.ClientSubject,
            TimeSpan.FromMinutes(1)).Succeeded);

        Assert.Equal(
            RendezvousErrorCode.NotFound,
            service.Report(
                attempt.AttemptId,
                attempt.ClientPunchCapability,
                new ReportConnectionOutcomeRequest
                {
                    Outcome = ConnectionOutcomeKind.Cancelled,
                    ElapsedBucket = ConnectionElapsedBucket.UnderOneSecond,
                }).Error);
    }

    [Fact]
    public void FrozenV1ReportFieldsAreAcceptedButNormalizedBeforeRetention()
    {
        using JoinAttemptFixture fixture = new();
        (RegisterSessionResponse registration, _) = fixture.CreateHost();
        CreateJoinAttemptResponse attempt = fixture.Create(registration.ListingId);
        ConnectionOutcomeMetrics metrics = new();
        ConnectionOutcomeService service = new(
            fixture.Sessions.Store,
            fixture.Sessions.Capabilities,
            metrics);
#pragma warning disable CS0618 // Deliberately exercises the frozen legacy input surface.
        ReportConnectionOutcomeRequest legacy = new()
        {
            Outcome = ConnectionOutcomeKind.TimedOut,
            ElapsedMilliseconds = 6_000,
            DiagnosticCode = "legacy-text-is-discarded",
        };
#pragma warning restore CS0618

        ConnectionOutcomeServiceResult result = service.Report(
            attempt.AttemptId,
            attempt.ClientPunchCapability,
            legacy);

        Assert.True(result.Succeeded);
        Assert.Equal(
            1,
            metrics.GetCount(
                ConnectionOutcomeKind.PunchTimedOut,
                ConnectionElapsedBucket.FiveToFifteenSeconds));
    }
}