QuantEngineByItz/src/dotnet/QuantEngine.Core/Scheduling/IDataValidator.cs

using System.Collections.Generic;

namespace QuantEngine.Core.Scheduling
{
    /// <summary>
    /// Data validation interface for quality gates.
    /// Part of Phase 0: 5-point validation (Completeness, Freshness, Consistency, Outliers, Duplicates).
    /// </summary>
    public interface IDataValidator
    {
        /// <summary>
        /// Validate a single snapshot record.
        /// Returns result with status and failed checks.
        /// </summary>
        ValidationResult Validate(Dictionary<string, object> data);
    }

    /// <summary>
    /// Validation result with detailed failure information.
    /// </summary>
    public class ValidationResult
    {
        public bool IsValid { get; set; }
        public List<string> FailedChecks { get; set; } = new();
        public string Status { get; set; } = "PASS";
    }
}