using System;
using Svrnty.CQRS.Events.Abstractions.EventStore;

namespace Svrnty.CQRS.Events.Abstractions.Models;

/// <summary>
/// Base class for correlated events with automatic framework-managed properties.
/// Inherit from this class to avoid manually specifying EventId, CorrelationId, and OccurredAt.
/// </summary>
public abstract record CorrelatedEvent : ICorrelatedEvent
{
    /// <summary>
    /// Unique identifier for this event instance.
    /// Automatically generated when the event is created.
    /// </summary>
    public string EventId { get; init; } = Guid.NewGuid().ToString();

    /// <summary>
    /// Correlation ID linking this event to the command that caused it.
    /// Automatically set by the framework after the command handler completes.
    /// </summary>
    public string CorrelationId { get; set; } = string.Empty;

    /// <summary>
    /// Timestamp when the event occurred.
    /// Automatically set to UTC now when the event is created.
    /// </summary>
    public DateTimeOffset OccurredAt { get; init; } = DateTimeOffset.UtcNow;
}