using System.Collections.Generic;
using System.Linq;

namespace Avalonia.PropertyGrid.Models;

/// <summary>
/// Represents a category group of properties
/// </summary>
public class PropertyCategory
{
    /// <summary>
    /// Gets or sets the category name.
    /// </summary>
    public string Name { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the list of properties in this category.
    /// </summary>
    public List<PropertyItem> Properties { get; set; } = new();

    /// <summary>
    /// Gets or sets whether the category is expanded in the UI.
    /// </summary>
    public bool IsExpanded { get; set; } = true;

    /// <summary>
    /// Gets or sets the display order of the category.
    /// </summary>
    public int Order { get; set; }
}

/// <summary>
/// Helper for grouping properties by category
/// </summary>
public static class PropertyCategoryHelper
{
    /// <summary>
    /// Groups a list of properties by their category.
    /// </summary>
    public static List<PropertyCategory> GroupByCategory(List<PropertyItem> properties)
    {
        return properties.GroupBy(p => p.Category)
                        .Select(g => new PropertyCategory
                        {
                            Name = g.Key,
                            Properties = g.ToList(),
                            IsExpanded = true,
                            Order = g.Min(p => p.Order)
                        })
                        .OrderBy(c => c.Order)
                        .ThenBy(c => c.Name)
                        .ToList();
    }
}