using System.Text.Json.Serialization;

namespace StellaOps.Policy.Determinization.Evidence;

/// <summary>
/// VEX (Vulnerability Exploitability eXchange) claim summary.
/// </summary>
public sealed record VexClaimSummary
{
    /// <summary>
    /// VEX status.
    /// </summary>
    [JsonPropertyName("status")]
    public required string Status { get; init; } // "affected", "not_affected", "fixed", "under_investigation"

    /// <summary>
    /// Confidence in this claim [0.0, 1.0].
    /// Weighted average if multiple sources.
    /// </summary>
    [JsonPropertyName("confidence")]
    public required double Confidence { get; init; }

    /// <summary>
    /// Number of VEX statements supporting this claim.
    /// </summary>
    [JsonPropertyName("statement_count")]
    public required int StatementCount { get; init; }

    /// <summary>
    /// When this summary was computed (UTC).
    /// </summary>
    [JsonPropertyName("computed_at")]
    public required DateTimeOffset ComputedAt { get; init; }

    /// <summary>
    /// Justification text (if provided).
    /// </summary>
    [JsonPropertyName("justification")]
    public string? Justification { get; init; }
}