using System.IO;

namespace StellaOps.Scanner.Cache;

public sealed class ScannerCacheOptions
{
    private const long DefaultMaxBytes = 5L * 1024 * 1024 * 1024; // 5 GiB

    public bool Enabled { get; set; } = true;

    public string RootPath { get; set; } = Path.Combine("cache", "scanner");

    public string LayersDirectoryName { get; set; } = "layers";

    public string FileCasDirectoryName { get; set; } = "cas";

    public TimeSpan LayerTtl { get; set; } = TimeSpan.FromDays(45);

    public TimeSpan FileTtl { get; set; } = TimeSpan.FromDays(30);

    public long MaxBytes { get; set; } = DefaultMaxBytes;

    public long WarmBytesThreshold { get; set; } = DefaultMaxBytes / 5; // 20 %

    public long ColdBytesThreshold { get; set; } = (DefaultMaxBytes * 4) / 5; // 80 %

    public bool EnableAutoEviction { get; set; } = true;

    public TimeSpan MaintenanceInterval { get; set; } = TimeSpan.FromMinutes(15);

    public bool EnableFileCas { get; set; } = true;

    public string? ImportDirectory { get; set; }

    public string? ExportDirectory { get; set; }

    public string LayersDirectoryPath => Path.Combine(RootPath, LayersDirectoryName);

    public string FileCasDirectoryPath => Path.Combine(RootPath, FileCasDirectoryName);
}