using LinFu.IoC.Interfaces;

namespace LinFu.IoC
{
    /// <summary>
    ///     Represents the default implementation for the <see cref="ICreateInstance" />
    /// </summary>
    public class DefaultCreator : ICreateInstance
    {
        /// <summary>
        ///     Creates a service instance using the given <paramref name="factoryRequest" /> and <see cref="IFactory" /> instance.
        /// </summary>
        /// <param name="factoryRequest">
        ///     The <see cref="IFactoryRequest" /> instance that describes the context of the service
        ///     request.
        /// </param>
        /// <param name="factory">The <see cref="IFactory" /> instance that will be used to instantiate the service type.</param>
        /// <returns>A valid service instance.</returns>
        public virtual object CreateFrom(IFactoryRequest factoryRequest, IFactory factory)
        {
            object instance = null;

            // Generate the service instance
            if (factory != null)
                instance = factory.CreateInstance(factoryRequest);

            return instance;
        }        
    }
}