using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

namespace Core.Blueprint.Redis.Configuration
{
    /// <summary>
    /// Provides extension methods for registering Redis-related services in the DI container.
    /// </summary>
    public static class RegisterBlueprint
    {
        /// <summary>
        /// Adds Redis caching services to the service collection.
        /// </summary>
        /// <param name="services">The service collection to register the services into.</param>
        /// <param name="configuration">The application configuration object.</param>
        /// <returns>The updated service collection.</returns>
        public static IServiceCollection AddRedis(this IServiceCollection services, IConfiguration configuration)
        {
            // Retrieve the Redis connection string from the configuration.
            // Get Redis configuration section
            var redisConnectionString = configuration.GetSection("ConnectionStrings:Redis").Value;
            if (string.IsNullOrEmpty(redisConnectionString))
            {
                throw new InvalidOperationException("Redis connection is not configured.");
            }

            // Register RedisCacheProvider
            services.AddSingleton<IRedisCacheProvider>(provider =>
                new RedisCacheProvider(redisConnectionString, provider.GetRequiredService<ILogger<RedisCacheProvider>>(), configuration));

            // Get CacheSettings and register with the ICacheSettings interface
            var cacheSettings = configuration.GetSection("CacheSettings").Get<CacheSettings>();
            if (cacheSettings == null)
            {
                throw new InvalidOperationException("Redis CacheSettings section is not configured.");
            }
            services.AddSingleton<ICacheSettings>(cacheSettings);

            return services;
        }
    }
}