using System;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using xCommons.Extensions;
using xHttpService.Configurations;
using xHttpService.Constants;
using xHttpService.Interfaces;
using xHttpService.Providers;

namespace xHttpService.DI {
    public static partial class XDIHelperExtension {
        /// <summary>
        /// Retrieve XHttpService Configuration from AppSettings
        /// </summary>
        /// <param name="configuration"></param>
        /// <returns></returns>
        public static XHttpServiceConfiguration GetXHttpServiceConfiguration (this IConfiguration configuration) {
            //
            var xHttpSection = configuration.GetSection (ConfigurationNodeNames.HTTP_SERVICE_NODE_NAME);
            return xHttpSection.Get<XHttpServiceConfiguration> ();
        }

        /// <summary>
        /// Register XHttpService Configuration
        /// </summary>
        /// <param name="services"></param>
        /// <param name="configuration"></param>
        public static void AddXHttpServiceConfiguration (
            this IServiceCollection services,
            IConfiguration configuration
        ) {
            //
            var httpServiceConfiguration = configuration.GetXHttpServiceConfiguration ();
            services.AddXHttpServiceConfiguration(httpServiceConfiguration);
        }

        /// <summary>
        /// Register XHttpService Configuration
        /// </summary>
        /// <param name="services"></param>
        /// <param name="configuration"></param>
        public static void AddXHttpServiceConfiguration (
            this IServiceCollection services,
            XHttpServiceConfiguration configuration
        ) {
            //
            if (configuration.IsNull ()) {
                Console.WriteLine($"xHttpService: there is no provided configurations, using default ...");
                configuration = new XHttpServiceConfiguration ();
            }

            //
            services.AddSingleton<XHttpServiceConfiguration> (configuration);
        }

        /// <summary>
        /// Register XHttpService on DI ...
        /// </summary>
        /// <param name="services"></param>
        /// <param name="configuration"></param>
        public static void AddXHttpService (
            this IServiceCollection services,
            IConfiguration configuration
        ) {
            //
            // Register Service Configuration ...
            if (services.GetRegisteredService<XHttpServiceConfiguration> ().IsNull ()) {
                services.AddXHttpServiceConfiguration (configuration);
            }

            //
            // Register Service ...
            services.AddSingleton<IXHttpProvider, XHttpProvider> ();
        }

        /// <summary>
        /// Register XHttpService on DI ...
        /// </summary>
        /// <param name="services"></param>
        /// <param name="configuration"></param>
        public static void AddXHttpService (
            this IServiceCollection services,
            XHttpServiceConfiguration configuration
        ) {
            //
            // Register Service Configuration ...
            if (services.GetRegisteredService<XHttpServiceConfiguration> ().IsNull ()) {
                services.AddXHttpServiceConfiguration (configuration);
            }

            //
            // Register Service ...
            services.AddSingleton<IXHttpProvider, XHttpProvider> ();
        }
    }
}