// <copyright file="WitnessModels.cs" company="StellaOps">
// SPDX-License-Identifier: AGPL-3.0-or-later
// Sprint: SPRINT_20260112_014_CLI_witness_commands (CLI-WIT-001)
// </copyright>

using System.Text.Json.Serialization;

namespace StellaOps.Cli.Services.Models;

/// <summary>
/// Request for listing witnesses.
/// </summary>
public sealed record WitnessListRequest
{
    /// <summary>
    /// Filter by scan ID.
    /// </summary>
    public string? ScanId { get; init; }

    /// <summary>
    /// Filter by vulnerability ID (e.g., CVE-2024-1234).
    /// </summary>
    public string? VulnerabilityId { get; init; }

    /// <summary>
    /// Filter by component PURL.
    /// </summary>
    public string? ComponentPurl { get; init; }

    /// <summary>
    /// Filter by predicate type.
    /// </summary>
    public string? PredicateType { get; init; }

    /// <summary>
    /// Maximum number of results.
    /// </summary>
    public int? Limit { get; init; }

    /// <summary>
    /// Continuation token for pagination.
    /// </summary>
    public string? ContinuationToken { get; init; }

    /// <summary>
    /// Tenant ID.
    /// </summary>
    public string? TenantId { get; init; }
}

/// <summary>
/// Response for listing witnesses.
/// </summary>
public sealed record WitnessListResponse
{
    /// <summary>
    /// List of witness summaries.
    /// </summary>
    [JsonPropertyName("witnesses")]
    public IReadOnlyList<WitnessSummary> Witnesses { get; init; } = [];

    /// <summary>
    /// Continuation token for next page.
    /// </summary>
    [JsonPropertyName("continuation_token")]
    public string? ContinuationToken { get; init; }

    /// <summary>
    /// Total count of matching witnesses.
    /// </summary>
    [JsonPropertyName("total_count")]
    public int TotalCount { get; init; }
}

/// <summary>
/// Summary of a witness for list views.
/// </summary>
public sealed record WitnessSummary
{
    /// <summary>
    /// Content-addressed witness ID.
    /// </summary>
    [JsonPropertyName("witness_id")]
    public required string WitnessId { get; init; }

    /// <summary>
    /// Vulnerability ID.
    /// </summary>
    [JsonPropertyName("vulnerability_id")]
    public string? VulnerabilityId { get; init; }

    /// <summary>
    /// Component PURL.
    /// </summary>
    [JsonPropertyName("component_purl")]
    public string? ComponentPurl { get; init; }

    /// <summary>
    /// Entrypoint name.
    /// </summary>
    [JsonPropertyName("entrypoint")]
    public string? Entrypoint { get; init; }

    /// <summary>
    /// Sink symbol.
    /// </summary>
    [JsonPropertyName("sink")]
    public string? Sink { get; init; }

    /// <summary>
    /// Path length.
    /// </summary>
    [JsonPropertyName("path_length")]
    public int PathLength { get; init; }

    /// <summary>
    /// Predicate type URI.
    /// </summary>
    [JsonPropertyName("predicate_type")]
    public string? PredicateType { get; init; }

    /// <summary>
    /// Whether the witness has a valid DSSE signature.
    /// </summary>
    [JsonPropertyName("is_signed")]
    public bool IsSigned { get; init; }

    /// <summary>
    /// When the witness was created.
    /// </summary>
    [JsonPropertyName("created_at")]
    public DateTimeOffset CreatedAt { get; init; }
}

/// <summary>
/// Detailed witness response.
/// </summary>
public sealed record WitnessDetailResponse
{
    /// <summary>
    /// Schema version.
    /// </summary>
    [JsonPropertyName("witness_schema")]
    public string? WitnessSchema { get; init; }

    /// <summary>
    /// Content-addressed witness ID.
    /// </summary>
    [JsonPropertyName("witness_id")]
    public required string WitnessId { get; init; }

    /// <summary>
    /// Artifact information.
    /// </summary>
    [JsonPropertyName("artifact")]
    public WitnessArtifactInfo? Artifact { get; init; }

    /// <summary>
    /// Vulnerability information.
    /// </summary>
    [JsonPropertyName("vuln")]
    public WitnessVulnInfo? Vuln { get; init; }

    /// <summary>
    /// Entrypoint information.
    /// </summary>
    [JsonPropertyName("entrypoint")]
    public WitnessEntrypointInfo? Entrypoint { get; init; }

    /// <summary>
    /// Call path from entrypoint to sink.
    /// </summary>
    [JsonPropertyName("path")]
    public IReadOnlyList<WitnessPathStep>? Path { get; init; }

    /// <summary>
    /// Sink information.
    /// </summary>
    [JsonPropertyName("sink")]
    public WitnessSinkInfo? Sink { get; init; }

    /// <summary>
    /// Detected gates along the path.
    /// </summary>
    [JsonPropertyName("gates")]
    public IReadOnlyList<WitnessGateInfo>? Gates { get; init; }

    /// <summary>
    /// Evidence digests.
    /// </summary>
    [JsonPropertyName("evidence")]
    public WitnessEvidenceInfo? Evidence { get; init; }

    /// <summary>
    /// When the witness was observed.
    /// </summary>
    [JsonPropertyName("observed_at")]
    public DateTimeOffset ObservedAt { get; init; }

    /// <summary>
    /// Path hash for deterministic joining.
    /// Sprint: SPRINT_20260112_004_SCANNER_path_witness_nodehash
    /// </summary>
    [JsonPropertyName("path_hash")]
    public string? PathHash { get; init; }

    /// <summary>
    /// Top-K node hashes along the path.
    /// Sprint: SPRINT_20260112_004_SCANNER_path_witness_nodehash
    /// </summary>
    [JsonPropertyName("node_hashes")]
    public IReadOnlyList<string>? NodeHashes { get; init; }

    /// <summary>
    /// Evidence URIs for traceability.
    /// </summary>
    [JsonPropertyName("evidence_uris")]
    public IReadOnlyList<string>? EvidenceUris { get; init; }

    /// <summary>
    /// Predicate type URI.
    /// </summary>
    [JsonPropertyName("predicate_type")]
    public string? PredicateType { get; init; }

    /// <summary>
    /// DSSE envelope if signed.
    /// </summary>
    [JsonPropertyName("dsse_envelope")]
    public WitnessDsseEnvelope? DsseEnvelope { get; init; }
}

/// <summary>
/// Artifact information in a witness.
/// </summary>
public sealed record WitnessArtifactInfo
{
    [JsonPropertyName("sbom_digest")]
    public string? SbomDigest { get; init; }

    [JsonPropertyName("component_purl")]
    public string? ComponentPurl { get; init; }
}

/// <summary>
/// Vulnerability information in a witness.
/// </summary>
public sealed record WitnessVulnInfo
{
    [JsonPropertyName("id")]
    public string? Id { get; init; }

    [JsonPropertyName("source")]
    public string? Source { get; init; }

    [JsonPropertyName("affected_range")]
    public string? AffectedRange { get; init; }
}

/// <summary>
/// Entrypoint information in a witness.
/// </summary>
public sealed record WitnessEntrypointInfo
{
    [JsonPropertyName("kind")]
    public string? Kind { get; init; }

    [JsonPropertyName("name")]
    public string? Name { get; init; }

    [JsonPropertyName("symbol_id")]
    public string? SymbolId { get; init; }
}

/// <summary>
/// A step in the call path.
/// </summary>
public sealed record WitnessPathStep
{
    [JsonPropertyName("symbol")]
    public string? Symbol { get; init; }

    [JsonPropertyName("symbol_id")]
    public string? SymbolId { get; init; }

    [JsonPropertyName("file")]
    public string? File { get; init; }

    [JsonPropertyName("line")]
    public int? Line { get; init; }
}

/// <summary>
/// Sink information in a witness.
/// </summary>
public sealed record WitnessSinkInfo
{
    [JsonPropertyName("symbol")]
    public string? Symbol { get; init; }

    [JsonPropertyName("symbol_id")]
    public string? SymbolId { get; init; }

    [JsonPropertyName("sink_type")]
    public string? SinkType { get; init; }
}

/// <summary>
/// Gate (guard/control) information in a witness.
/// </summary>
public sealed record WitnessGateInfo
{
    [JsonPropertyName("type")]
    public string? Type { get; init; }

    [JsonPropertyName("guard_symbol")]
    public string? GuardSymbol { get; init; }

    [JsonPropertyName("confidence")]
    public double Confidence { get; init; }

    [JsonPropertyName("detail")]
    public string? Detail { get; init; }
}

/// <summary>
/// Evidence information in a witness.
/// </summary>
public sealed record WitnessEvidenceInfo
{
    [JsonPropertyName("callgraph_digest")]
    public string? CallgraphDigest { get; init; }

    [JsonPropertyName("surface_digest")]
    public string? SurfaceDigest { get; init; }

    [JsonPropertyName("analysis_config_digest")]
    public string? AnalysisConfigDigest { get; init; }

    [JsonPropertyName("build_id")]
    public string? BuildId { get; init; }
}

/// <summary>
/// DSSE envelope information.
/// </summary>
public sealed record WitnessDsseEnvelope
{
    [JsonPropertyName("payload_type")]
    public string? PayloadType { get; init; }

    [JsonPropertyName("payload")]
    public string? Payload { get; init; }

    [JsonPropertyName("signatures")]
    public IReadOnlyList<WitnessDsseSignature>? Signatures { get; init; }
}

/// <summary>
/// DSSE signature information.
/// </summary>
public sealed record WitnessDsseSignature
{
    [JsonPropertyName("keyid")]
    public string? KeyId { get; init; }

    [JsonPropertyName("sig")]
    public string? Signature { get; init; }
}

/// <summary>
/// Response for witness verification.
/// </summary>
public sealed record WitnessVerifyResponse
{
    /// <summary>
    /// Whether verification succeeded.
    /// </summary>
    [JsonPropertyName("verified")]
    public bool Verified { get; init; }

    /// <summary>
    /// Verification status code.
    /// </summary>
    [JsonPropertyName("status")]
    public string? Status { get; init; }

    /// <summary>
    /// Detailed verification message.
    /// </summary>
    [JsonPropertyName("message")]
    public string? Message { get; init; }

    /// <summary>
    /// DSSE verification details.
    /// </summary>
    [JsonPropertyName("dsse")]
    public WitnessDsseVerifyInfo? Dsse { get; init; }

    /// <summary>
    /// Content hash verification.
    /// </summary>
    [JsonPropertyName("content_hash")]
    public WitnessContentHashInfo? ContentHash { get; init; }

    /// <summary>
    /// Verification timestamp.
    /// </summary>
    [JsonPropertyName("verified_at")]
    public DateTimeOffset VerifiedAt { get; init; }
}

/// <summary>
/// DSSE verification details.
/// </summary>
public sealed record WitnessDsseVerifyInfo
{
    [JsonPropertyName("envelope_valid")]
    public bool EnvelopeValid { get; init; }

    [JsonPropertyName("signature_count")]
    public int SignatureCount { get; init; }

    [JsonPropertyName("valid_signatures")]
    public int ValidSignatures { get; init; }

    [JsonPropertyName("signer_identities")]
    public IReadOnlyList<string>? SignerIdentities { get; init; }

    [JsonPropertyName("predicate_type")]
    public string? PredicateType { get; init; }
}

/// <summary>
/// Content hash verification details.
/// </summary>
public sealed record WitnessContentHashInfo
{
    [JsonPropertyName("expected")]
    public string? Expected { get; init; }

    [JsonPropertyName("actual")]
    public string? Actual { get; init; }

    [JsonPropertyName("match")]
    public bool Match { get; init; }
}

/// <summary>
/// Export format for witnesses.
/// </summary>
public enum WitnessExportFormat
{
    /// <summary>
    /// Raw JSON witness payload.
    /// </summary>
    Json,

    /// <summary>
    /// DSSE-signed envelope.
    /// </summary>
    Dsse,

    /// <summary>
    /// SARIF format.
    /// </summary>
    Sarif
}