namespace StellaOps.Evidence.Bundle;

/// <summary>A complete evidence bundle for a single finding/alert.</summary>
public sealed class EvidenceBundle
{
    public string BundleId { get; init; } = Guid.NewGuid().ToString("N");
    public string SchemaVersion { get; init; } = "1.1";
    public required string AlertId { get; init; }
    public required string ArtifactId { get; init; }
    public ReachabilityEvidence? Reachability { get; init; }
    public CallStackEvidence? CallStack { get; init; }
    public ProvenanceEvidence? Provenance { get; init; }
    public VexStatusEvidence? VexStatus { get; init; }
    public DiffEvidence? Diff { get; init; }
    public GraphRevisionEvidence? GraphRevision { get; init; }
    // Sprint: SPRINT_20260112_008_LB_binary_diff_evidence_models (BINDIFF-LB-002)
    public BinaryDiffEvidence? BinaryDiff { get; init; }
    public required EvidenceHashSet Hashes { get; init; }
    public required DateTimeOffset CreatedAt { get; init; }

    public int ComputeCompletenessScore()
    {
        var score = 0;
        if (Reachability?.Status == EvidenceStatus.Available) score++;
        if (CallStack?.Status == EvidenceStatus.Available) score++;
        if (Provenance?.Status == EvidenceStatus.Available) score++;
        if (VexStatus?.Status == EvidenceStatus.Available) score++;
        // BINDIFF-LB-002: Include binary diff in completeness scoring
        if (BinaryDiff?.Status == EvidenceStatus.Available) score++;
        return score;
    }

    public EvidenceStatusSummary CreateStatusSummary() => new()
    {
        Reachability = Reachability?.Status ?? EvidenceStatus.Unavailable,
        CallStack = CallStack?.Status ?? EvidenceStatus.Unavailable,
        Provenance = Provenance?.Status ?? EvidenceStatus.Unavailable,
        VexStatus = VexStatus?.Status ?? EvidenceStatus.Unavailable,
        Diff = Diff?.Status ?? EvidenceStatus.Unavailable,
        GraphRevision = GraphRevision?.Status ?? EvidenceStatus.Unavailable,
        // BINDIFF-LB-002: Include binary diff status
        BinaryDiff = BinaryDiff?.Status ?? EvidenceStatus.Unavailable
    };

    public EvidenceBundlePredicate ToSigningPredicate() => new()
    {
        BundleId = BundleId,
        AlertId = AlertId,
        ArtifactId = ArtifactId,
        CompletenessScore = ComputeCompletenessScore(),
        Hashes = Hashes,
        StatusSummary = CreateStatusSummary(),
        CreatedAt = CreatedAt,
        SchemaVersion = SchemaVersion
    };
}