using Demo.Models;

namespace Demo.Features;

/// <summary>
/// 默认的功能类，做委托容器用
/// </summary>
/// <typeparam name="TMetadata"></typeparam>
public sealed class DefaultFeature<TMetadata> : Feature<TMetadata>
    where TMetadata : IMetadata
{
    public DefaultFeature(string name, FeatureFunction<TMetadata>? executeFunction = null, 
        FeatureFunctionAsync<TMetadata>? executeFunctionAsync = null,
        int order = 1)
    {
        _executeFunction = executeFunction;
        _executeFunctionAsync = executeFunctionAsync;
        Name = name;
        Order = order;
    }

    private readonly FeatureFunction<TMetadata>? _executeFunction;

    private readonly FeatureFunctionAsync<TMetadata>? _executeFunctionAsync;

    public override void Execute(TMetadata metadata)
    {
        _executeFunction?.Invoke(this, metadata);
    }

    public override async ValueTask ExecuteAsync(TMetadata metadata)
    {
        if (_executeFunctionAsync is not null)
        {
            await _executeFunctionAsync.Invoke(this, metadata);  
        }
    }
}