using System;
using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.DependencyInjection;

namespace NewLife.Extensions.Caching.Redis
{
    /// <summary>
    /// Redis分布式缓存扩展
    /// </summary>
    public static class RedisCacheServiceCollectionExtensions
    {
        /// <summary>
        /// 添加Redis分布式缓存
        /// </summary>
        /// <param name="services"></param>
        /// <param name="setupAction"></param>
        /// <returns></returns>
        /// <exception cref="ArgumentNullException"></exception>
        public static IServiceCollection AddDistributedRedisCache(this IServiceCollection services, Action<RedisCacheOptions> setupAction)
        {
            if (services == null)
                throw new ArgumentNullException(nameof(services));
            if (setupAction == null)
                throw new ArgumentNullException(nameof(setupAction));

            services.AddOptions();
            services.Configure(setupAction);
            services.Add(ServiceDescriptor.Singleton<IDistributedCache, RedisCache>());
            return services;
        }
    }
}