using System;
using MongoDB.Driver;
using PolyTraderSharp.Extensions;
using System.Net.Http;
using System.Threading.Channels;
using System.Windows.Forms;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Options;
using PolyTrader.Core.Configuration;
using PolyTrader.Core.DependencyInjection;
using PolyTrader.Core.Streaming;
using PolyTrader.Core.Modularity;
using PolyTrader.Modules.CopyTrading;
using PolyTrader.Modules.CopyTrading.Persistence;
using PolyTraderSharp.Models;
using PolyTraderSharp.Services;

namespace PolyTraderSharp;

internal static class Program
{
    public static IHost? AppHost { get; private set; }

	[STAThread]
	private static void Main()
	{
		ApplicationConfiguration.Initialize();

			var modules = new System.Collections.Generic.List<IPolyTraderModule>
			{
				new CopyTradingModule()
			};

			AppHost = Host.CreateDefaultBuilder().ConfigureServices(delegate(HostBuilderContext context, IServiceCollection services)
			{
				services.Configure<DatabaseOptions>(context.Configuration.GetSection(DatabaseOptions.SectionName));
				services.AddSingleton<IMongoDatabase>((IServiceProvider sp) =>
				{
					var dbOptions = sp.GetRequiredService<IOptions<DatabaseOptions>>().Value;
					var client = new MongoClient(dbOptions.ConnectionString);
					return client.GetDatabase(dbOptions.DatabaseName);
				});
				services.AddCorePersistence();
				services.AddSingleton<IBlockchainWssClientFactory, AlchemyWssClientFactory>();
				services.AddSingleton((IServiceProvider sp) => ServerSettings.Load("server_settings.xml"));
				services.AddSingleton<TradingState>();
				services.AddSingleton(delegate(IServiceProvider sp)
				{
					TerminalLogger requiredService2 = sp.GetRequiredService<TerminalLogger>();
					var httpHandler = new SocketsHttpHandler { PooledConnectionLifetime = TimeSpan.FromMinutes(2), MaxConnectionsPerServer = 100 };
					return new PolymarketApiService(requiredService2, new HttpClient(httpHandler)
					{
						DefaultRequestHeaders = 
						{
							{ "User-Agent", "py_clob_client" },
							{ "Accept", "*/*" }
						}
					});
				});
				services.AddSingleton(delegate(IServiceProvider sp)
				{
					TerminalLogger requiredService2 = sp.GetRequiredService<TerminalLogger>();
					var httpHandler = new SocketsHttpHandler { PooledConnectionLifetime = TimeSpan.FromMinutes(2), MaxConnectionsPerServer = 100 };
					return new PolymarketClobClient(requiredService2, new HttpClient(httpHandler)
					{
						DefaultRequestHeaders = 
						{
							{ "User-Agent", "py_clob_client" },
							{ "Accept", "*/*" }
						}
					});
				});
				services.AddSingleton<TerminalLogger>();
				services.AddSingleton<MullvadVpnService>();
				services.AddSingleton<ThreemaService>();
				services.AddSingleton<JobManager>();

				// MUSS als erster HostedService laufen: hydriert den State, bevor die
				// Trading-Services gegen einen leeren State anlaufen.
				services.AddHostedService<StartupHydrationService>();

				// Module registrieren ihre eigenen Services/Channels/State selbst.
				foreach (var module in modules)
				{
					services.AddSingleton(module);
					module.RegisterServices(services, context.Configuration);
				}

				services.AddHostedService<AlchemyWebsocketService>();
				services.AddHostedService<PersistenceService>();
				services.AddHostedService<MarketSyncService>();
				services.AddHostedService<MasterTraderAnalyticsJob>();
				services.AddHostedService<PolymarketWssClient>();
				services.AddHostedService((IServiceProvider sp) => sp.GetRequiredService<MullvadVpnService>());
				services.AddHostedService((IServiceProvider sp) => sp.GetRequiredService<ThreemaService>());
				services.AddTransient<frm_main>();
				services.AddSingleton<PolyTraderSharp.Ui.ShellUiHost>();
				services.AddTransient<PolyTraderSharp.Ui.LauncherForm>();
			}).Build();

            try 
            {
                var db = AppHost.Services.GetRequiredService<IMongoDatabase>();

                // Einmal-Bereinigung (Alt-Bug): entferne closed_trades mit ObjectId-_id.
                // Das _id muss die int-TradeId sein; fehlerhafte Auto-ObjectIds werden verworfen.
                // Läuft jetzt über die konfigurierte DB statt über einen hart codierten Client.
                try
                {
                    var cleanupCol = db.GetCollection<MongoDB.Bson.BsonDocument>("closed_trades");
                    cleanupCol.DeleteMany(Builders<MongoDB.Bson.BsonDocument>.Filter.Type("_id", MongoDB.Bson.BsonType.ObjectId));
                }
                catch { }

                var copyState = AppHost.Services.GetRequiredService<CopyTradingState>();
                var maxTradeDoc = db.GetCollection<MongoDB.Bson.BsonDocument>("closed_trades")
                    .Find(Builders<MongoDB.Bson.BsonDocument>.Filter.Empty)
                    .SortByDescending(d => d["_id"])
                    .Limit(1)
                    .FirstOrDefault();

                if (maxTradeDoc != null && maxTradeDoc.Contains("_id"))
                {
                    copyState.TotalCopyTrades = maxTradeDoc["_id"].AsInt32;
                }
            } 
            catch { }

			AppHost.Start();

			// Shell-Views registrieren (Core-App-Views; Module folgen via module.RegisterUi).
			var uiHost = AppHost.Services.GetRequiredService<PolyTraderSharp.Ui.ShellUiHost>();
			var viewServices = AppHost.Services;
			uiHost.RegisterView(new PolyTrader.Core.Modularity.ModuleView
			{
				Id = "core.terminal",
				Title = "Terminal",
				Group = "Core",
				Order = 10,
				CreateForm = () =>
				{
					var view = new PolyTraderSharp.Ui.Views.TerminalView();
					view.Initialize(viewServices.GetRequiredService<TerminalLogger>());
					return view;
				}
			});
			uiHost.RegisterView(new PolyTrader.Core.Modularity.ModuleView
			{
				Id = "core.settings",
				Title = "Server Settings",
				Group = "Core",
				Order = 20,
				CreateForm = () =>
				{
					var view = new PolyTraderSharp.Ui.Views.SettingsView();
					view.Initialize(
						viewServices.GetRequiredService<ThreemaService>(),
						viewServices.GetRequiredService<MullvadVpnService>(),
						viewServices.GetRequiredService<TerminalLogger>(),
						viewServices.GetRequiredService<PolyTrader.Core.Persistence.IAccountRepository>(),
						viewServices.GetRequiredService<TradingState>());
					return view;
				}
			});
			uiHost.RegisterView(new PolyTrader.Core.Modularity.ModuleView
			{
				Id = "core.jobs",
				Title = "Server Jobs",
				Group = "Core",
				Order = 30,
				CreateForm = () =>
				{
					var view = new PolyTraderSharp.Ui.Views.JobsView();
					view.Initialize(viewServices.GetRequiredService<JobManager>());
					return view;
				}
			});
			uiHost.RegisterView(new PolyTrader.Core.Modularity.ModuleView
			{
				Id = "core.dashboard",
				Title = "Dashboard",
				Group = "Core",
				Order = 5,
				CreateForm = () =>
				{
					var view = new PolyTraderSharp.Ui.Views.DashboardView();
					view.Initialize(
						viewServices.GetRequiredService<PolyTrader.Core.Persistence.ITradeLogRepository>(),
						viewServices.GetRequiredService<TradingState>());
					return view;
				}
			});
			// Modul-UI registrieren (Module steuern ihre Views selbst bei).
			foreach (var module in modules)
			{
				module.RegisterUi(uiHost);
			}

			var launcher = AppHost.Services.GetRequiredService<PolyTraderSharp.Ui.LauncherForm>();
			Application.Run(launcher);
			AppHost.StopAsync().GetAwaiter().GetResult();
		}
}