namespace Minint.Core.Models;

/// <summary>
/// Top-level container: holds dimensions shared by all documents/layers,
/// and a list of documents (frames).
/// </summary>
public sealed class MinintContainer
{
    public int Width { get; set; }
    public int Height { get; set; }
    public List<MinintDocument> Documents { get; }

    public int PixelCount => Width * Height;

    public MinintContainer(int width, int height)
    {
        ArgumentOutOfRangeException.ThrowIfLessThan(width, 1);
        ArgumentOutOfRangeException.ThrowIfLessThan(height, 1);

        Width = width;
        Height = height;
        Documents = [];
    }

    /// <summary>
    /// Creates a new document with a single transparent layer and adds it to the container.
    /// </summary>
    public MinintDocument AddNewDocument(string name)
    {
        var doc = new MinintDocument(name);
        doc.Layers.Add(new MinintLayer("Layer 1", PixelCount));
        Documents.Add(doc);
        return doc;
    }
}