using System.Collections.Generic;
using LinFu.IoC.Interfaces;

namespace LinFu.IoC
{
    /// <summary>
    ///     Represents an <see cref="IPreProcessor" /> type that processes multiple <see cref="IPreProcessor" /> instances at
    ///     once.
    /// </summary>
    internal class CompositePreProcessor : IPreProcessor
    {
        private readonly IEnumerable<IPreProcessor> _preProcessors;

        /// <summary>
        ///     Initializes the type using the given <paramref name="preProcessors" />.
        /// </summary>
        /// <param name="preProcessors">The list of <see cref="IPreProcessor" /> instances that will be handled by this type.</param>
        public CompositePreProcessor(IEnumerable<IPreProcessor> preProcessors)
        {
            _preProcessors = preProcessors;
        }


        /// <summary>
        ///     A method that passes every request result made
        ///     to the list of preprocessors.
        /// </summary>
        /// <param name="request">The parameter that describes the context of the service request.</param>
        public void Preprocess(IServiceRequest request)
        {
            foreach (var preprocessor in _preProcessors) preprocessor.Preprocess(request);
        }
    }
}