using Admin.Core.Common.Configs;
using AspNetCoreRateLimit;
using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.Caching.Redis;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Admin.Core.Extensions
{
    public static class RateLimitServiceCollectionExtensions
    {
        /// <summary>
        /// 添加Ip限流
        /// </summary>
        /// <param name="services"></param>
        /// <param name="configuration"></param>
        /// <param name="cacheConfig"></param>
        public static void AddIpRateLimit(this IServiceCollection services, IConfiguration configuration, CacheConfig cacheConfig)
        {
            #region IP限流

            services.Configure<IpRateLimitOptions>(configuration.GetSection("IpRateLimiting"));
            services.Configure<IpRateLimitPolicies>(configuration.GetSection("IpRateLimitPolicies"));

            if (cacheConfig.TypeRateLimit == Common.Cache.CacheType.Redis)
            {
                //redis
                var redisRateLimit = new CSRedis.CSRedisClient(cacheConfig.Redis.ConnectionStringRateLimit);
                services.AddSingleton<IDistributedCache>(new CSRedisCache(redisRateLimit));
                services.AddDistributedRateLimiting();
            }
            else
            {
                //内存
                services.AddMemoryCache();
                services.AddInMemoryRateLimiting();
            }
            services.AddSingleton<IRateLimitConfiguration, RateLimitConfiguration>();

            #endregion IP限流
        }
    }
}