using NLog;
using System;
using System.Runtime.CompilerServices;
using ChaosBot.Discord;
using System.Threading.Tasks;
using ChaosBot.Attribute;
using ChaosBot.Database.Repository;
using Microsoft.Extensions.Configuration;

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

        private static void Main(string[] args)
        {
            _appsettingsPath = args.Length > 0 ? args[0] : "./appsettings.json";
            new Program().MainFunction().GetAwaiter().GetResult();
        }

        private async Task MainFunction()
        {
            try
            {
                /*
                 * Load configuration from AppSettings.Json and save as Cfg
                 */
                IConfiguration configurationHandler = LoadConfiguration(_appsettingsPath);
                
                /*
                 * Initialize dependency injector
                 */
                Dependency.Initialize(configurationHandler);
                
                /*
                 * Set AppSettingsHandler on ConfigurationRepository
                 */
                ConfigurationRepository.AppSettingsHandler = configurationHandler;

                /*
                 * Initialize the _logger for logging purposes
                 */
                _logger = Dependency.GetInstance<ILogger>();
                
                /*
                 * Attempt to load our custom assemblies
                 */
                RegisterAssemblyController();

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


                var discordBot = LoadDiscord();
                LoadWebServer();
                await discordBot;
            }
            catch (Exception ex)
            {
                _logger.Error(ex, $"Program.MainFunction: Exception [{ex}] thrown, <[{ex.Message}]>.");
            }
        }

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

        public static void RegisterAssemblyController()
        {
            AssemblyController.RegisterAll();
        }

        public static void LoadWebServer()
        {
            WebServer.WebServer.Start(new string[]{});
        }

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