using StellaOps.Evidence.Models;
using StellaOps.Replay.Engine;
using StellaOps.Replay.Models;
using StellaOps.Testing.Manifests.Models;
using System.Collections.Immutable;
using System.Threading;
using System.Threading.Tasks;

namespace StellaOps.Replay.Tests;

internal sealed class FakeFeedLoader : IFeedLoader
{
    public Task<FeedSnapshot> LoadByDigestAsync(string digest, CancellationToken ct = default)
        => Task.FromResult(new FeedSnapshot("nvd", "v1", digest, ReplayEngineTestFixtures.FixedFeedSnapshotAt));
}

internal sealed class FakePolicyLoader : IPolicyLoader
{
    public Task<PolicySnapshot> LoadByDigestAsync(string digest, CancellationToken ct = default)
        => Task.FromResult(new PolicySnapshot("1.0.0", digest, ImmutableArray<string>.Empty));
}

internal sealed class FakeScannerFactory : IScannerFactory
{
    public IScanner Create(ScannerOptions options) => new FakeScanner(options);
}

internal sealed class FakeScanner : IScanner
{
    private readonly ScannerOptions _options;
    public FakeScanner(ScannerOptions options) => _options = options;

    public Task<ScanResult> ScanAsync(ImmutableArray<ArtifactDigest> artifacts, CancellationToken ct = default)
    {
        var verdict = new
        {
            feedVersion = _options.FeedSnapshot.Version,
            policyDigest = _options.PolicySnapshot.LatticeRulesDigest
        };
        var evidence = new EvidenceIndex
        {
            IndexId = ReplayEngineTestFixtures.EvidenceIndexId,
            SchemaVersion = "1.0.0",
            Verdict = new VerdictReference("v1", new string('d', 64), VerdictOutcome.Pass, null),
            Sboms = ImmutableArray<SbomEvidence>.Empty,
            Attestations = ImmutableArray<AttestationEvidence>.Empty,
            ToolChain = new ToolChainEvidence("1", "1", "1", "1", "1", ImmutableDictionary<string, string>.Empty),
            RunManifestDigest = new string('e', 64),
            CreatedAt = ReplayEngineTestFixtures.FixedTimestamp
        };
        return Task.FromResult(new ScanResult(verdict, evidence, 10));
    }
}