// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
using System;
using System.Collections.Generic;
 
namespace Microsoft.AspNetCore.Components.WebView.WindowsForms
{
	/// <summary>
	/// Provides a set of extension methods for modifying collections of <see cref="IComponent"/> objects.
	/// </summary>
	public static class RootComponentCollectionExtensions
	{
		/// <summary>
		/// Adds the component specified by <typeparamref name="TComponent"/> to the collection specified by
		/// <paramref name="components" /> to be associated with the selector specified by <paramref name="selector"/>
		/// and to be instantiated with the parameters specified by <paramref name="parameters"/>.
		/// </summary>
		/// <typeparam name="TComponent">The <see cref="IComponent"/> to add to the collection.</typeparam>
		/// <param name="components">The collection to which the component should be added.</param>
		/// <param name="selector">The selector to which the component will be associated.</param>
		/// <param name="parameters">The optional creation parameters for the component.</param>
		public static void Add<TComponent>(this RootComponentsCollection components, string selector, IDictionary<string, object?>? parameters = null)
			where TComponent : IComponent
		{
			components.Add(new RootComponent(selector, typeof(TComponent), parameters));
		}
 
		/// <summary>
		/// Removes the component associated with the specified <paramref name="selector"/> from the collection
		/// specified by <paramref name="components" /> .
		/// </summary>
		/// <param name="components">The collection from which the component associated with the selector should be removed.</param>
		/// <param name="selector">The selector associated with the component to be removed.</param>
		public static void Remove(this RootComponentsCollection components, string selector)
		{
			for (var i = 0; i < components.Count; i++)
			{
				if (components[i].Selector.Equals(selector, StringComparison.Ordinal))
				{
					components.RemoveAt(i);
					return;
				}
			}
 
			throw new ArgumentException($"There is no root component with selector '{selector}'.", nameof(selector));
		}
	}
}