using System;
using xAiApi.Constants;
using xAiApi.Extensions;
using xCommons.Extensions;
using xAiApi.Configurations;
using xExceptions.Constants;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace xAiApi.DI
{
    public static partial class XDIHelperExtension
    {
        /// <summary>
        /// Extract AI Configuration ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static XAiApiConfiguration GetXAiApiConfiguration(this IConfiguration source)
        {
            //
            XAiApiConfiguration result = null;

            //
            var section = source.GetSection(ConfigurationNodeNames.AI_API_NODE);
            if (!section.IsNull())
            {
                result = section.Get<XAiApiConfiguration>();
            }

            //
            return result;
        }

        /// <summary>
        /// Register AiApi Configuration ...
        /// </summary>
        /// <param name="source"></param>
        /// <param name="configuration"></param>
        public static void AddXAiApiConfiguration(
            this IServiceCollection source,
            IConfiguration configuration
        )
        {
            //
            var apiConfig = configuration.GetXAiApiConfiguration();
            source.AddXAiApiConfiguration(apiConfig);
        }

        /// <summary>
        /// Register AiApi Configuration ...
        /// </summary>
        /// <param name="source"></param>
        /// <param name="configuration"></param>
        public static void AddXAiApiConfiguration(
            this IServiceCollection source,
            XAiApiConfiguration configuration
        )
        {
            //
            if (!configuration.IsValid())
            {
                XException.InvalidConfiguration.Throw();
            }

            //
            source.AddSingleton(configuration);
        }

        //
        #region Private ...
        /// <summary>
        /// a LogTag for Service ...
        /// </summary>
        private static string XLogTag = XAiApiConstants.XDILogTag;

        /// <summary>
        /// print a log in Console ...
        /// </summary>
        /// <param name="message"></param>
        private static void Log(string message)
        {
            Console.WriteLine($"{XLogTag} => {message}");
        }
        #endregion
    }
}