using System;

namespace Svrnty.CQRS.Events.PostgreSQL.Retention;

/// <summary>
/// Configuration options for the retention policy background service.
/// </summary>
public class RetentionServiceOptions
{
    /// <summary>
    /// How often to check and enforce retention policies.
    /// Default: 1 hour
    /// </summary>
    public TimeSpan CleanupInterval { get; set; } = TimeSpan.FromHours(1);

    /// <summary>
    /// Start of cleanup window (UTC time of day).
    /// Cleanup only runs during this window to avoid peak hours.
    /// Default: 2 AM UTC
    /// </summary>
    public TimeSpan CleanupWindowStart { get; set; } = TimeSpan.FromHours(2);

    /// <summary>
    /// End of cleanup window (UTC time of day).
    /// Default: 6 AM UTC
    /// </summary>
    public TimeSpan CleanupWindowEnd { get; set; } = TimeSpan.FromHours(6);

    /// <summary>
    /// Whether the retention service is enabled.
    /// If false, retention policies will not be enforced automatically.
    /// Default: true
    /// </summary>
    public bool Enabled { get; set; } = true;

    /// <summary>
    /// Whether to use the cleanup window restriction.
    /// If false, cleanup runs whenever the interval elapses, regardless of time.
    /// Default: true
    /// </summary>
    public bool UseCleanupWindow { get; set; } = true;

    /// <summary>
    /// Validates the configuration.
    /// </summary>
    public void Validate()
    {
        if (CleanupInterval <= TimeSpan.Zero)
            throw new ArgumentException("CleanupInterval must be positive", nameof(CleanupInterval));

        if (CleanupWindowStart < TimeSpan.Zero || CleanupWindowStart >= TimeSpan.FromHours(24))
            throw new ArgumentException("CleanupWindowStart must be between 00:00:00 and 23:59:59", nameof(CleanupWindowStart));

        if (CleanupWindowEnd < TimeSpan.Zero || CleanupWindowEnd >= TimeSpan.FromHours(24))
            throw new ArgumentException("CleanupWindowEnd must be between 00:00:00 and 23:59:59", nameof(CleanupWindowEnd));
    }
}