namespace EnvelopeGenerator.Web.Models;

public class AnnotationParams
{
    private Annotation? DefaultAnnotation { get; init; }

    private readonly Dictionary<string, Annotation> _annots = new();

    public required Dictionary<string, Annotation> Annots
    {
        get => _annots;
        init
        {
            _annots = value;

            foreach (var name in _annots.Keys)
            {
                #region set default values
                if(DefaultAnnotation is not null)
                {
                    // To set default value, annotation must have default (0) value but default must has non-default value
                    if (_annots[name]._left == default && DefaultAnnotation.Left != default)
                        _annots[name]._left = DefaultAnnotation.Left;

                    if (_annots[name]._top == default && DefaultAnnotation.Top != default)
                        _annots[name]._top = DefaultAnnotation.Top;

                    if (_annots[name]._width == default && DefaultAnnotation.Width != default)
                        _annots[name]._width = DefaultAnnotation.Width;

                    if (_annots[name]._height == default && DefaultAnnotation.Height != default)
                        _annots[name]._height = DefaultAnnotation.Height;
                }
                #endregion

                #region set bound annotations
                // horizontal
                if (_annots[name].HorBoundAnnotName is string horBoundAnnotName)
                    if (_annots.TryGetValue(horBoundAnnotName, out var horBoundAnnot))
                        _annots[name].HorBoundAnnot = horBoundAnnot;
                    else
                        throw new InvalidOperationException($"{horBoundAnnotName} added as bound anotation. However, it is not defined.");

                // vertical
                if (_annots[name].VerBoundAnnotName is string verBoundAnnotName)
                    if (_annots.TryGetValue(verBoundAnnotName, out var verBoundAnnot))
                        _annots[name].VerBoundAnnot = verBoundAnnot;
                    else
                        throw new InvalidOperationException($"{verBoundAnnotName} added as bound anotation. However, it is not defined.");
                #endregion
            }
        }
    }
}