namespace StellaOps.BinaryIndex.GroundTruth.SecDb.Configuration;

/// <summary>
/// Configuration options for the Alpine SecDB connector.
/// </summary>
public sealed class SecDbOptions
{
    /// <summary>
    /// HTTP client name for DI.
    /// </summary>
    public const string HttpClientName = "GroundTruth.SecDb";

    /// <summary>
    /// Git repository URL for Alpine secdb.
    /// Default: https://gitlab.alpinelinux.org/alpine/secdb.git
    /// </summary>
    public string RepositoryUrl { get; set; } = "https://gitlab.alpinelinux.org/alpine/secdb.git";

    /// <summary>
    /// Local directory for secdb clone.
    /// Default: null (uses temp directory)
    /// </summary>
    public string? LocalPath { get; set; }

    /// <summary>
    /// Git repository URL for Alpine aports (for patch details).
    /// Default: https://gitlab.alpinelinux.org/alpine/aports.git
    /// </summary>
    public string AportsRepositoryUrl { get; set; } = "https://gitlab.alpinelinux.org/alpine/aports.git";

    /// <summary>
    /// Local directory for aports clone.
    /// Default: null (uses temp directory)
    /// </summary>
    public string? AportsLocalPath { get; set; }

    /// <summary>
    /// Alpine branches to process.
    /// Default: ["edge", "v3.19", "v3.18", "v3.17"]
    /// </summary>
    public List<string> Branches { get; set; } = ["edge", "v3.19", "v3.18", "v3.17"];

    /// <summary>
    /// Repositories within each branch to process.
    /// Default: ["main", "community"]
    /// </summary>
    public List<string> Repositories { get; set; } = ["main", "community"];

    /// <summary>
    /// Whether to fetch aports for patch details.
    /// Default: false (expensive operation)
    /// </summary>
    public bool FetchAports { get; set; } = false;

    /// <summary>
    /// Request timeout in seconds for HTTP operations.
    /// Default: 120 (git operations can be slow)
    /// </summary>
    public int TimeoutSeconds { get; set; } = 120;

    /// <summary>
    /// User-Agent header for HTTP requests.
    /// </summary>
    public string UserAgent { get; set; } = "StellaOps-GroundTruth/1.0 (secdb-connector)";

    /// <summary>
    /// Whether to use shallow clone to save bandwidth.
    /// Default: true
    /// </summary>
    public bool ShallowClone { get; set; } = true;

    /// <summary>
    /// Depth for shallow clone.
    /// Default: 1
    /// </summary>
    public int CloneDepth { get; set; } = 1;

    /// <summary>
    /// Validate configuration.
    /// </summary>
    public void Validate()
    {
        if (string.IsNullOrWhiteSpace(RepositoryUrl))
            throw new InvalidOperationException("RepositoryUrl is required");

        if (Branches is null || Branches.Count == 0)
            throw new InvalidOperationException("At least one branch is required");

        if (Repositories is null || Repositories.Count == 0)
            throw new InvalidOperationException("At least one repository is required");

        if (TimeoutSeconds <= 0)
            throw new InvalidOperationException("TimeoutSeconds must be positive");
    }
}