using System.Text.Json;
using Json.Schema;
using StellaOps.Policy.RiskProfile.Schema;

namespace StellaOps.Policy.RiskProfile.Validation;

public sealed class RiskProfileValidator
{
    private readonly JsonSchema _schema;

    public RiskProfileValidator() : this(RiskProfileSchemaProvider.GetSchema())
    {
    }

    public RiskProfileValidator(JsonSchema schema)
    {
        _schema = schema ?? throw new ArgumentNullException(nameof(schema));
    }

    public ValidationResults Validate(string json)
    {
        if (string.IsNullOrWhiteSpace(json))
        {
            throw new ArgumentException("Risk profile payload is required.", nameof(json));
        }

        using var document = JsonDocument.Parse(json);
        return _schema.Validate(document.RootElement);
    }
}