/*****************************************************************************   
    The MIT License (MIT)

    Copyright (c) 2013 bernhard.richter@gmail.com

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
******************************************************************************
    LightInject.ServiceLocation version 1.0.0.2
    http://seesharper.github.io/LightInject/
    http://twitter.com/bernhardrichter    
******************************************************************************/
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namespace LightInject.ServiceLocation
{
    using System;
    using System.Collections.Generic;
    using Microsoft.Practices.ServiceLocation;

    /// <summary>
    /// An <see cref="IServiceLocator"/> adapter for the LightInject service container.
    /// </summary>
    public class LightInjectServiceLocator : ServiceLocatorImplBase
    {
        private readonly IServiceContainer serviceContainer;

        /// <summary>
        /// Initializes a new instance of the <see cref="LightInjectServiceLocator"/> class.
        /// </summary>
        /// <param name="serviceContainer">The <see cref="IServiceContainer"/> instance wrapped by this class.</param>
        public LightInjectServiceLocator(IServiceContainer serviceContainer)
        {
            this.serviceContainer = serviceContainer;
        }

        /// <summary>
        /// Gets a named instance of the given <paramref name="serviceType"/>.
        /// </summary>
        /// <param name="serviceType">The type of the requested service.</param>
        /// <param name="key">The key of the requested service.</param>
        /// <returns>The requested service instance.</returns>
        protected override object DoGetInstance(Type serviceType, string key)
        {
            if (key != null)
            {
                return serviceContainer.GetInstance(serviceType, key);
            }
            
            return serviceContainer.GetInstance(serviceType);
        }

        /// <summary>
        /// Gets all instances of the given <paramref name="serviceType"/>.
        /// </summary>
        /// <param name="serviceType">The type of services to resolve.</param>
        /// <returns>A list that contains all implementations of the <paramref name="serviceType"/>.</returns>
        protected override IEnumerable<object> DoGetAllInstances(Type serviceType)
        {
            return serviceContainer.GetAllInstances(serviceType);
        }
    }
}