// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

#nullable disable

using System.Threading.Tasks;

namespace Microsoft.AspNetCore.Razor.TagHelpers;

/// <summary>
/// An abstract base class for <see cref="ITagHelperComponent"/>.
/// </summary>
public abstract class TagHelperComponent : ITagHelperComponent
{
    /// <inheritdoc />
    /// <remarks>Default order is <c>0</c>.</remarks>
    public virtual int Order => 0;

    /// <inheritdoc />
    public virtual void Init(TagHelperContext context)
    {
    }

    /// <summary>
    /// Synchronously executes the <see cref="ITagHelperComponent"/> with the given <paramref name="context"/> and
    /// <paramref name="output"/>.
    /// </summary>
    /// <param name="context">Contains information associated with the current HTML tag.</param>
    /// <param name="output">A stateful HTML element used to generate an HTML tag.</param>
    public virtual void Process(TagHelperContext context, TagHelperOutput output)
    {
    }

    /// <inheritdoc />
    public virtual Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
    {
        Process(context, output);
        return Task.CompletedTask;
    }
}
