using NLog;
using System;
using System.Reflection;
using System.Runtime.CompilerServices;
using ChaosBot.Discord;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;

[assembly: InternalsVisibleTo("ChaosBot.UnitTests")]
namespace ChaosBot
{
    internal static class Program
    {
        private static ILogger _logger;
        public static IConfiguration AppSettingsHandler;
        
        private static string _appSettingsPath;

        private static void Main(string[] args)
        {
            _appSettingsPath = args.Length > 0 ? args[0] : "./appsettings.json";

            try
            {
                /*
                 * Load configuration from AppSettings.Json and save as Cfg
                 */
                AppSettingsHandler = LoadConfiguration(_appSettingsPath);

                /*
                 * Initialize the _logger for logging purposes
                 */
                _logger = Logging.GenLog(AppSettingsHandler);
                _logger.Trace("Logger initialized");
            }
            catch (Exception ex)
            {
                Console.Write($"{MethodBase.GetCurrentMethod()?.ReflectedType?.FullName}: Exception [{ex}] thrown, <[{ex.Message}]>.\n{ex.StackTrace}");
                return;
            }

            /*
             * Initialize the Discord Client and Login
             */
            Configuration config = new Configuration();
            _logger.Info($"Starting Up {config.GetValue<string>("Bot:Name")} v{config.GetValue<string>("Bot:Version")}");

            try
            {
                Task discordBot = LoadDiscord();
                LoadWebServer(args);
                discordBot.GetAwaiter().GetResult();
            }
            catch (Exception ex)
            {
                LoggingFacade.Exception(ex);
            }
        }

        public static ILogger GetLogger()
        {
            return _logger;
        }

        private static IConfiguration LoadConfiguration(string appSettingsPath)
        {
            return new ConfigurationBuilder()
                .SetBasePath(System.IO.Directory.GetCurrentDirectory())
                .AddJsonFile(appSettingsPath, optional: false, reloadOnChange: true).Build();
        }

        private static void LoadWebServer(string[] args)
        {
            WebServer.WebServer.Start(args);
        }

        private static Task LoadDiscord()
        {
            return DiscordConnect.StartUp();
        }
    }
}