using System;
using System.Linq;
using System.Net.Http;
using System.Threading;
using BTCPayServer.Abstractions.Contracts;
using BTCPayServer.Abstractions.Extensions;
using BTCPayServer.Abstractions.Models;
using BTCPayServer.Abstractions.Services;
using BTCPayServer.Client;
using BTCPayServer.Common;
using BTCPayServer.Configuration;
using BTCPayServer.Controllers;
using BTCPayServer.Controllers.Greenfield;
using BTCPayServer.Data;
using BTCPayServer.Data.Payouts.LightningLike;
using BTCPayServer.Forms;
using BTCPayServer.HostedServices;
using BTCPayServer.HostedServices.Webhooks;
using BTCPayServer.Lightning;
using BTCPayServer.Lightning.Charge;
using BTCPayServer.Lightning.CLightning;
using BTCPayServer.Lightning.Eclair;
using BTCPayServer.Lightning.LNbank;
using BTCPayServer.Lightning.LND;
using BTCPayServer.Lightning.LNDhub;
using BTCPayServer.Logging;
using BTCPayServer.PaymentRequest;
using BTCPayServer.Payments;
using BTCPayServer.Payments.Bitcoin;
using BTCPayServer.Payments.Lightning;
using BTCPayServer.Payments.PayJoin;
using BTCPayServer.PayoutProcessors;
using BTCPayServer.Plugins;
using BTCPayServer.Rating;
using BTCPayServer.Rating.Providers;
using BTCPayServer.Security;
using BTCPayServer.Security.Bitpay;
using BTCPayServer.Security.Greenfield;
using BTCPayServer.Services;
using BTCPayServer.Services.Apps;
using BTCPayServer.Services.Fees;
using BTCPayServer.Services.Invoices;
using BTCPayServer.Services.Labels;
using BTCPayServer.Services.Mails;
using BTCPayServer.Services.Notifications;
using BTCPayServer.Services.Notifications.Blobs;
using BTCPayServer.Services.PaymentRequests;
using BTCPayServer.Services.Rates;
using BTCPayServer.Services.Stores;
using BTCPayServer.Services.Wallets;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.ModelBinding.Validation;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using NBitcoin;
using NBitpayClient;
using NBXplorer.DerivationStrategy;
using Newtonsoft.Json;
using Serilog;
using BTCPayServer.Services.Reporting;
using BTCPayServer.Services.WalletFileParsing;
using BTCPayServer.Payments.LNURLPay;
using System.Collections.Generic;
using BTCPayServer.Payouts;
using ExchangeSharp;





#if ALTCOINS
using BTCPayServer.Services.Altcoins.Monero;
using BTCPayServer.Services.Altcoins.Zcash;
#endif
namespace BTCPayServer.Hosting
{
    public static class BTCPayServerServices
    {
        public static IServiceCollection RegisterJsonConverter(this IServiceCollection services, Func<BTCPayNetwork, JsonConverter> create)
        {
            services.AddSingleton<IJsonConverterRegistration, JsonConverterRegistration>((s) => new JsonConverterRegistration(create));
            return services;
        }
        public static IServiceCollection AddBTCPayServer(this IServiceCollection services, IConfiguration configuration, Logs logs)
        {
            services.AddSingleton<MvcNewtonsoftJsonOptions>(o => o.GetRequiredService<IOptions<MvcNewtonsoftJsonOptions>>().Value);
            services.AddSingleton<JsonSerializerSettings>(o => o.GetRequiredService<IOptions<MvcNewtonsoftJsonOptions>>().Value.SerializerSettings);
            services.AddDbContext<ApplicationDbContext>((provider, o) =>
            {
                var factory = provider.GetRequiredService<ApplicationDbContextFactory>();
                factory.ConfigureBuilder(o);
            });
            services.AddHttpClient();
            services.AddHttpClient(nameof(ExplorerClientProvider), httpClient =>
            {
                httpClient.Timeout = Timeout.InfiniteTimeSpan;
            });
            services.AddHttpClient<PluginBuilderClient>((prov, httpClient) =>
            {
                var p = prov.GetRequiredService<PoliciesSettings>();
                var pluginSource = p.PluginSource ?? PoliciesSettings.DefaultPluginSource;
                if (pluginSource.EndsWith('/'))
                    pluginSource = pluginSource.Substring(0, pluginSource.Length - 1);
                if (!Uri.TryCreate(pluginSource, UriKind.Absolute, out var r) || (r.Scheme != "https" && r.Scheme != "http"))
                    r = new Uri(PoliciesSettings.DefaultPluginSource, UriKind.Absolute);
                httpClient.BaseAddress = r;
            });

            services.AddSingleton<PrettyNameProvider>();
            services.AddSingleton<Logs>(logs);
            services.AddSingleton<BTCPayNetworkJsonSerializerSettings>();

            services.AddPayJoinServices();
            services.AddScoped<IScopeProvider, ScopeProvider>();
            services.TryAddSingleton<SettingsRepository>();
            services.TryAddSingleton<ISettingsRepository>(provider => provider.GetService<SettingsRepository>());
            services.TryAddSingleton<IStoreRepository>(provider => provider.GetService<StoreRepository>());
            services.TryAddSingleton<TorServices>();
            services.AddSingleton<IHostedService>(provider => provider.GetRequiredService<TorServices>());
            services.AddSingleton<ISwaggerProvider, DefaultSwaggerProvider>();
            services.TryAddSingleton<SocketFactory>();

            services.AddSingleton<Func<HttpClient, ILightningConnectionStringHandler>>(client =>
                new ChargeLightningConnectionStringHandler(client));
            services.AddSingleton<Func<HttpClient, ILightningConnectionStringHandler>>(_ =>
                new CLightningConnectionStringHandler());
            services.AddSingleton<Func<HttpClient, ILightningConnectionStringHandler>>(client =>
                new EclairConnectionStringHandler(client));
            services.AddSingleton<Func<HttpClient, ILightningConnectionStringHandler>>(client =>
                new LndConnectionStringHandler(client));
            services.AddSingleton<Func<HttpClient, ILightningConnectionStringHandler>>(client =>
                new LndHubConnectionStringHandler(client));
            services.AddSingleton<Func<HttpClient, ILightningConnectionStringHandler>>(client =>
                new LNbankConnectionStringHandler(client));
            services.TryAddSingleton<LightningClientFactoryService>();
            services.AddHttpClient(LightningClientFactoryService.OnionNamedClient)
                .ConfigurePrimaryHttpMessageHandler<Socks5HttpClientHandler>();


            services.TryAddSingleton<InvoicePaymentNotification>();
            services.TryAddSingleton<BTCPayServerOptions>(o =>
                o.GetRequiredService<IOptions<BTCPayServerOptions>>().Value);

            services.AddStartupTask<MigrationStartupTask>();

            //
            AddSettingsAccessor<PoliciesSettings>(services);
            AddSettingsAccessor<ThemeSettings>(services);
            //

            AddOnchainWalletParsers(services);
            services.AddSingleton<IUIExtension>(new UIExtension("Bitcoin/ViewBitcoinLikePaymentData", "store-invoices-payments"));
            services.AddSingleton<IUIExtension>(new UIExtension("Lightning/ViewLightningLikePaymentData", "store-invoices-payments"));

            services.AddStartupTask<BlockExplorerLinkStartupTask>();
            services.TryAddSingleton<InvoiceRepository>();
            services.AddSingleton<PaymentService>();
            services.AddSingleton<BTCPayServerEnvironment>();
            services.TryAddSingleton<TokenRepository>();
            services.TryAddSingleton<WalletRepository>();
            services.TryAddSingleton<EventAggregator>();
            services.TryAddSingleton<PaymentRequestService>();
            services.TryAddSingleton<UserService>();
            services.TryAddSingleton<UriResolver>();
            services.TryAddSingleton<WalletHistogramService>();
            services.AddSingleton<ApplicationDbContextFactory>();
            services.AddOptions<BTCPayServerOptions>().Configure(
                (options) =>
                {
                    options.LoadArgs(configuration, logs);
                });
            services.AddOptions<DataDirectories>().Configure(
                (options) =>
                {
                    options.Configure(configuration);
                });
            services.AddOptions<DatabaseOptions>().Configure<IOptions<DataDirectories>>(
                (options, datadirs) =>
                {
                    var postgresConnectionString = configuration["postgres"];
                    if (!string.IsNullOrEmpty(postgresConnectionString))
                    {
                        options.ConnectionString = postgresConnectionString;
                    }
                    else
                    {
                        throw new InvalidOperationException("No database option was configured.");
                    }
                });
            services.AddOptions<NBXplorerOptions>().Configure<BTCPayNetworkProvider>(
                (options, btcPayNetworkProvider) =>
                {
                    foreach (BTCPayNetwork btcPayNetwork in btcPayNetworkProvider.GetAll().OfType<BTCPayNetwork>())
                    {
                        NBXplorerConnectionSetting setting =
                            new NBXplorerConnectionSetting
                            {
                                CryptoCode = btcPayNetwork.CryptoCode,
                                ExplorerUri = configuration.GetOrDefault<Uri>(
                                    $"{btcPayNetwork.CryptoCode}.explorer.url",
                                    btcPayNetwork.NBXplorerNetwork.DefaultSettings.DefaultUrl),
                                CookieFile = configuration.GetOrDefault<string>(
                                    $"{btcPayNetwork.CryptoCode}.explorer.cookiefile",
                                    btcPayNetwork.NBXplorerNetwork.DefaultSettings.DefaultCookieFile)
                            };
                        options.NBXplorerConnectionSettings.Add(setting);
                        options.ConnectionString = configuration.GetOrDefault<string>("explorer.postgres", null);
                    }
                });
            services.AddOptions<LightningNetworkOptions>().Configure<BTCPayNetworkProvider, LightningClientFactoryService>(
                (options, btcPayNetworkProvider, lightningClientFactoryService) =>
                {
                    foreach (var net in btcPayNetworkProvider.GetAll().OfType<BTCPayNetwork>())
                    {
                        var lightning = configuration.GetOrDefault<string>($"{net.CryptoCode}.lightning", string.Empty);
                        if (lightning.Length != 0)
                        {
                            string error = null;
                            ILightningClient lightningClient = null;
                            try
                            {
                                lightningClient = lightningClientFactoryService.Create(lightning, net);
                            }
                            catch (Exception e)
                            {
                                error = e.Message;
                            }

                            if (error is not null)
                            {
                                logs.Configuration.LogWarning($"Invalid setting {net.CryptoCode}.lightning, " +
                                                              Environment.NewLine +
                                                              $"If you have a c-lightning server use: 'type=clightning;server=/root/.lightning/lightning-rpc', " +
                                                              Environment.NewLine +
                                                              $"If you have a lightning charge server: 'type=charge;server=https://charge.example.com;api-token=yourapitoken'" +
                                                              Environment.NewLine +
                                                              $"If you have a lnd server: 'type=lnd-rest;server=https://lnd:lnd@lnd.example.com;macaroon=abf239...;certthumbprint=2abdf302...'" +
                                                              Environment.NewLine +
                                                              $"              lnd server: 'type=lnd-rest;server=https://lnd:lnd@lnd.example.com;macaroonfilepath=/root/.lnd/admin.macaroon;certthumbprint=2abdf302...'" +
                                                              Environment.NewLine +
                                                              $"If you have an eclair server: 'type=eclair;server=http://eclair.com:4570;password=eclairpassword;bitcoin-host=bitcoind:37393;bitcoin-auth=bitcoinrpcuser:bitcoinrpcpassword" +
                                                              Environment.NewLine +
                                                              $"               eclair server: 'type=eclair;server=http://eclair.com:4570;password=eclairpassword;bitcoin-host=bitcoind:37393" +
                                                              Environment.NewLine +
                                                              $"Error: {error}" + Environment.NewLine +
                                                              "This service will not be exposed through BTCPay Server");
                            }
                            else
                            {
                                if (lightningClient.ToString() != lightning)
                                {
                                    logs.Configuration.LogWarning(
                                        $"Setting {net.CryptoCode}.lightning is a deprecated format ({lightning}), it will work now, but please replace it for future versions with '{lightningClient}'");
                                }
                                options.InternalLightningByCryptoCode.Add(net.CryptoCode, lightningClient);
                            }
                        }
                    }
                });
            services.AddOptions<ExternalServicesOptions>().Configure<BTCPayNetworkProvider>(
                (options, btcPayNetworkProvider) =>
                {
                    foreach (var net in btcPayNetworkProvider.GetAll().OfType<BTCPayNetwork>())
                    {
                        options.ExternalServices.Load(net.CryptoCode, configuration);
                    }

                    options.ExternalServices.LoadNonCryptoServices(configuration);

                    var services = configuration.GetOrDefault<string>("externalservices", null);
                    if (services != null)
                    {
                        foreach (var service in services.Split(new[] { ';', ',' }, StringSplitOptions.RemoveEmptyEntries)
                            .Select(p => (p, SeparatorIndex: p.IndexOf(':', StringComparison.OrdinalIgnoreCase)))
                            .Where(p => p.SeparatorIndex != -1)
                            .Select(p => (Name: p.p.Substring(0, p.SeparatorIndex),
                                Link: p.p.Substring(p.SeparatorIndex + 1))))
                        {
                            if (Uri.TryCreate(service.Link, UriKind.RelativeOrAbsolute, out var uri))
                                options.OtherExternalServices.AddOrReplace(service.Name, uri);
                        }
                    }
                });
            services.TryAddSingleton<BTCPayNetworkProvider>();

            services.AddExceptionHandler<PluginExceptionHandler>();
            services.TryAddSingleton<AppService>();
            services.AddTransient<PluginService>();
            services.AddSingleton<PluginHookService>();
            services.AddSingleton<IPluginHookService, PluginHookService>(provider => provider.GetService<PluginHookService>());
            services.TryAddTransient<Safe>();
            services.TryAddTransient<DisplayFormatter>();
            services.TryAddSingleton<Ganss.Xss.HtmlSanitizer>(o =>
            {
                var htmlSanitizer = new Ganss.Xss.HtmlSanitizer();

                htmlSanitizer.RemovingAtRule += (sender, args) =>
                {
                };
                htmlSanitizer.RemovingTag += (sender, args) =>
                {
                    if (args.Tag.TagName.Equals("img", StringComparison.InvariantCultureIgnoreCase))
                    {
                        if (!args.Tag.ClassList.Contains("img-fluid"))
                        {
                            args.Tag.ClassList.Add("img-fluid");
                        }

                        args.Cancel = true;
                    }
                };

                htmlSanitizer.RemovingAttribute += (sender, args) =>
                {
                    if (args.Tag.TagName.Equals("img", StringComparison.InvariantCultureIgnoreCase) &&
                        args.Attribute.Name.Equals("src", StringComparison.InvariantCultureIgnoreCase) &&
                        args.Reason == Ganss.Xss.RemoveReason.NotAllowedUrlValue)
                    {
                        args.Cancel = true;
                    }
                };
                htmlSanitizer.RemovingStyle += (sender, args) => { args.Cancel = true; };
                htmlSanitizer.AllowedAttributes.Add("class");
                htmlSanitizer.AllowedTags.Add("iframe");
                htmlSanitizer.AllowedTags.Add("style");
                htmlSanitizer.AllowedTags.Remove("img");
                htmlSanitizer.AllowedAttributes.Add("webkitallowfullscreen");
                htmlSanitizer.AllowedAttributes.Add("allowfullscreen");
                htmlSanitizer.AllowedSchemes.Add("mailto");
                htmlSanitizer.AllowedSchemes.Add("bitcoin");
                htmlSanitizer.AllowedSchemes.Add("lightning");
                return htmlSanitizer;
            });

            services.AddSingleton<TransactionLinkProviders>();
            services.TryAddSingleton<LightningConfigurationProvider>();
            services.TryAddSingleton<LanguageService>();
            services.TryAddSingleton<ReportService>();
            services.TryAddSingleton<NBXplorerDashboard>();
            services.AddSingleton<ISyncSummaryProvider, NBXSyncSummaryProvider>();
            services.TryAddSingleton<StoreRepository>();
            services.TryAddSingleton<PaymentRequestRepository>();
            services.TryAddSingleton<BTCPayWalletProvider>();
            services.TryAddSingleton<WalletReceiveService>();
            services.AddSingleton<IHostedService>(provider => provider.GetService<WalletReceiveService>());
            services.TryAddSingleton<CurrencyNameTable>(CurrencyNameTable.Instance);
            services.AddScheduledTask<FeeProviderFactory>(TimeSpan.FromMinutes(3.0));
            services.AddSingleton<IFeeProviderFactory, FeeProviderFactory>(f => f.GetRequiredService<FeeProviderFactory>());

            services.Configure<MvcOptions>((o) =>
            {
                o.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(WalletId)));
                o.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(DerivationStrategyBase)));
            });

            services.AddSingleton<Services.NBXplorerConnectionFactory>();
            services.AddSingleton<IHostedService, Services.NBXplorerConnectionFactory>(o => o.GetRequiredService<Services.NBXplorerConnectionFactory>());
            services.AddSingleton<HostedServices.CheckConfigurationHostedService>();
            services.AddSingleton<IHostedService, HostedServices.CheckConfigurationHostedService>(o => o.GetRequiredService<CheckConfigurationHostedService>());
            services.AddSingleton<IHostedService, StoreEmailRuleProcessorSender>();
            services.AddSingleton<IHostedService, PeriodicTaskLauncherHostedService>();
            services.AddScheduledTask<GithubVersionFetcher>(TimeSpan.FromDays(1));
            services.AddScheduledTask<PluginUpdateFetcher>(TimeSpan.FromDays(1));

            services.AddReportProvider<PaymentsReportProvider>();
            services.AddReportProvider<OnChainWalletReportProvider>();
            services.AddReportProvider<ProductsReportProvider>();
            services.AddReportProvider<PayoutsReportProvider>();
            services.AddReportProvider<LegacyInvoiceExportReportProvider>();
            services.AddReportProvider<RefundsReportProvider>();
            services.AddWebhooks();

            services.AddSingleton<Dictionary<PaymentMethodId, IPaymentMethodBitpayAPIExtension>>(o =>
            o.GetRequiredService<IEnumerable<IPaymentMethodBitpayAPIExtension>>().ToDictionary(o => o.PaymentMethodId, o => o));
            services.AddSingleton<Dictionary<PaymentMethodId, IPaymentLinkExtension>>(o =>
o.GetRequiredService<IEnumerable<IPaymentLinkExtension>>().ToDictionary(o => o.PaymentMethodId, o => o));
            services.AddSingleton<Dictionary<PaymentMethodId, IPaymentModelExtension>>(o =>
            o.GetRequiredService<IEnumerable<IPaymentModelExtension>>().ToDictionary(o => o.PaymentMethodId, o => o));

            services.AddHttpClient(LightningLikePayoutHandler.LightningLikePayoutHandlerOnionNamedClient)
                .ConfigurePrimaryHttpMessageHandler<Socks5HttpClientHandler>();
            services.AddSingleton<HostedServices.PullPaymentHostedService>();
            services.AddSingleton<IHostedService, HostedServices.PullPaymentHostedService>(o => o.GetRequiredService<PullPaymentHostedService>());


            services.AddSingleton<IHostedService, NBXplorerListener>();


            services.AddSingleton<IUIExtension>(new UIExtension("LNURL/LightningAddressNav",
                "store-integrations-nav"));
            services.AddSingleton<IHostedService, LightningListener>();
            services.AddSingleton<IHostedService, LightningPendingPayoutListener>();

            services.AddSingleton<PaymentMethodHandlerDictionary>();
            services.AddSingleton<PaymentMethodViewProvider>();

            services.AddSingleton<PayoutMethodHandlerDictionary>();

            services.AddSingleton<NotificationManager>();
            services.AddScoped<NotificationSender>();

            RegisterExchangeRecommendations(services);
            services.AddSingleton<DefaultRulesCollection>();
            services.AddSingleton<IHostedService, NBXplorerWaiters>();
            services.AddSingleton<IHostedService, InvoiceEventSaverService>();
            services.AddSingleton<IHostedService, BitpayIPNSender>();
            services.AddSingleton<IHostedService, InvoiceWatcher>();
            services.AddSingleton<IHostedService, RatesHostedService>();
            services.AddSingleton<IHostedService, BackgroundJobSchedulerHostedService>();
            services.AddSingleton<IHostedService, AppHubStreamer>();
            services.AddSingleton<IHostedService, AppInventoryUpdaterHostedService>();
            services.AddSingleton<IHostedService, TransactionLabelMarkerHostedService>();
            services.AddSingleton<IHostedService, UserEventHostedService>();
            services.AddSingleton<IHostedService, DynamicDnsHostedService>();
            services.AddSingleton<IHostedService, PaymentRequestStreamer>();
            services.AddSingleton<IBackgroundJobClient, BackgroundJobClient>();
            services.AddScoped<IAuthorizationHandler, CookieAuthorizationHandler>();
            services.AddScoped<IAuthorizationHandler, BitpayAuthorizationHandler>();

            services.AddSingleton<INotificationHandler, NewVersionNotification.Handler>();
            services.AddSingleton<INotificationHandler, NewUserRequiresApprovalNotification.Handler>();
            services.AddSingleton<INotificationHandler, InviteAcceptedNotification.Handler>();
            services.AddSingleton<INotificationHandler, PluginUpdateNotification.Handler>();
            services.AddSingleton<INotificationHandler, InvoiceEventNotification.Handler>();
            services.AddSingleton<INotificationHandler, PayoutNotification.Handler>();
            services.AddSingleton<INotificationHandler, ExternalPayoutTransactionNotification.Handler>();
            services.AddSingleton<IHostedService, DbMigrationsHostedService>();

            services.TryAddSingleton<ExplorerClientProvider>();
            services.AddSingleton<IExplorerClientProvider, ExplorerClientProvider>(x =>
                x.GetRequiredService<ExplorerClientProvider>());
            services.TryAddSingleton<Bitpay>(o =>
            {
                if (o.GetRequiredService<BTCPayServerOptions>().NetworkType == ChainName.Mainnet)
                    return new Bitpay(new Key(), new Uri("https://bitpay.com/"));
                else
                    return new Bitpay(new Key(), new Uri("https://test.bitpay.com/"));
            });
            RegisterRateSources(services);
            services.TryAddSingleton<RateProviderFactory>();
            services.TryAddSingleton<RateFetcher>();

            services.TryAddScoped<IHttpContextAccessor, HttpContextAccessor>();
            services.AddTransient<BitpayAccessTokenController>();
            services.AddTransient<UIInvoiceController>();
            services.AddTransient<UIPaymentRequestController>();
            services.AddSingleton<LabelService>();
            // Add application services.
            services.AddSingleton<EmailSenderFactory>();
            services.AddSingleton<InvoiceActivator>();

            //create a simple client which hooks up to the http scope
            services.AddScoped<BTCPayServerClient, LocalBTCPayServerClient>();
            //also provide a factory that can impersonate user/store id
            services.AddSingleton<IBTCPayServerClientFactory, BTCPayServerClientFactory>();
            services.AddPayoutProcesors();
            services.AddForms();

            services.AddAPIKeyAuthentication();
            services.AddBtcPayServerAuthenticationSchemes();
            services.AddAuthorization(o => o.AddBTCPayPolicies());

            services.AddCors(options =>
            {
                options.AddPolicy(CorsPolicies.All, p => p.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin());
            });
            services.AddRateLimits();
            services.AddLogging(logBuilder =>
            {
                var debugLogFile = BTCPayServerOptions.GetDebugLog(configuration);
                if (!string.IsNullOrEmpty(debugLogFile))
                {
                    Serilog.Log.Logger = new LoggerConfiguration()
                        .Enrich.FromLogContext()
                        .MinimumLevel.Is(BTCPayServerOptions.GetDebugLogLevel(configuration))
                        .WriteTo.File(debugLogFile, rollingInterval: RollingInterval.Day, fileSizeLimitBytes: MAX_DEBUG_LOG_FILE_SIZE, rollOnFileSizeLimit: true, retainedFileCountLimit: 1)
                        .CreateLogger();
                    logBuilder.AddProvider(new Serilog.Extensions.Logging.SerilogLoggerProvider(Log.Logger));
                }
            });

            services.AddSingleton<IObjectModelValidator, SkippableObjectValidatorProvider>();
            services.SkipModelValidation<RootedKeyPath>();
            services.SkipModelValidation<NodeInfo>();

            if (configuration.GetOrDefault<bool>("cheatmode", false))
            {
                services.AddSingleton<Cheater>();
                services.AddSingleton<IHostedService, Cheater>(o => o.GetRequiredService<Cheater>());
            }

            var userAgent = new System.Net.Http.Headers.ProductInfoHeaderValue("BTCPayServer", BTCPayServerEnvironment.GetInformationalVersion());
            foreach (var clientName in WebhookSender.AllClients.Concat(new[] { BitpayIPNSender.NamedClient }))
            {
                services.AddHttpClient(clientName)
                    .ConfigureHttpClient(client =>
                    {
                        client.DefaultRequestHeaders.UserAgent.Add(userAgent);
                    });
            }

            return services;
        }

        public static void RegisterExchangeRecommendations(IServiceCollection services)
        {
            foreach (var rule in new Dictionary<string, string>()
            {
                { "EUR", "kraken" },
                { "USD", "kraken" },
                { "GBP", "kraken" },
                { "CHF", "kraken" },
                { "GTQ", "bitpay" },
                { "COP", "yadio" },
                { "ARS", "yadio" },
                { "JPY", "bitbank" },
                { "TRY", "btcturk" },
                { "UGX", "yadio"},
                { "RSD", "bitpay"},
                { "NGN", "bitnob"}
            })
            {
                var r = new DefaultRules.Recommendation(rule.Key, rule.Value);
                r.Order = DefaultRules.HardcodedRecommendedExchangeOrder;
                services.AddSingleton<DefaultRules>(r);
            }
        }

        public static void AddOnchainWalletParsers(IServiceCollection services)
        {
            services.AddSingleton<WalletFileParsers>();
            services.AddSingleton<IWalletFileParser, BSMSWalletFileParser>();
            services.AddSingleton<IWalletFileParser, NBXDerivGenericWalletFileParser>();
            services.AddSingleton<IWalletFileParser, ElectrumWalletFileParser>();
            services.AddSingleton<IWalletFileParser, OutputDescriptorWalletFileParser>(provider => provider.GetService<OutputDescriptorWalletFileParser>());
            services.AddSingleton<OutputDescriptorWalletFileParser>();
            services.AddSingleton<IWalletFileParser, SpecterWalletFileParser>();
            services.AddSingleton<IWalletFileParser, OutputDescriptorJsonWalletFileParser>();
            services.AddSingleton<IWalletFileParser, WasabiWalletFileParser>();
        }

        internal static void RegisterRateSources(IServiceCollection services)
        {
            // We need to be careful to only add exchanges which OnGetTickers implementation make only 1 request
            services.AddRateProviderExchangeSharp<ExchangeBinanceAPI>(new("binance", "Binance", "https://api.binance.com/api/v1/ticker/24hr"));
            services.AddRateProviderExchangeSharp<ExchangePoloniexAPI>(new("poloniex", "Poloniex", " https://api.poloniex.com/markets/price"));
            services.AddRateProviderExchangeSharp<ExchangeNDAXAPI>(new("ndax", "NDAX", "https://ndax.io/api/returnTicker"));

            services.AddRateProviderExchangeSharp<ExchangeBitfinexAPI>(new("bitfinex", "Bitfinex", "https://api.bitfinex.com/v2/tickers?symbols=tBTCUSD,tLTCUSD,tLTCBTC,tETHUSD,tETHBTC,tETCBTC,tETCUSD,tRRTUSD,tRRTBTC,tZECUSD,tZECBTC,tXMRUSD,tXMRBTC,tDSHUSD,tDSHBTC,tBTCEUR,tBTCJPY,tXRPUSD,tXRPBTC,tIOTUSD,tIOTBTC,tIOTETH,tEOSUSD,tEOSBTC,tEOSETH,tSANUSD,tSANBTC,tSANETH,tOMGUSD,tOMGBTC,tOMGETH,tNEOUSD,tNEOBTC,tNEOETH,tETPUSD,tETPBTC,tETPETH,tQTMUSD,tQTMBTC,tQTMETH,tAVTUSD,tAVTBTC,tAVTETH,tEDOUSD,tEDOBTC,tEDOETH,tBTGUSD,tBTGBTC,tDATUSD,tDATBTC,tDATETH,tQSHUSD,tQSHBTC,tQSHETH,tYYWUSD,tYYWBTC,tYYWETH,tGNTUSD,tGNTBTC,tGNTETH,tSNTUSD,tSNTBTC,tSNTETH,tIOTEUR,tBATUSD,tBATBTC,tBATETH,tMNAUSD,tMNABTC,tMNAETH,tFUNUSD,tFUNBTC,tFUNETH,tZRXUSD,tZRXBTC,tZRXETH,tTNBUSD,tTNBBTC,tTNBETH,tSPKUSD,tSPKBTC,tSPKETH,tTRXUSD,tTRXBTC,tTRXETH,tRCNUSD,tRCNBTC,tRCNETH,tRLCUSD,tRLCBTC,tRLCETH,tAIDUSD,tAIDBTC,tAIDETH,tSNGUSD,tSNGBTC,tSNGETH,tREPUSD,tREPBTC,tREPETH,tELFUSD,tELFBTC,tELFETH,tNECUSD,tNECBTC,tNECETH,tBTCGBP,tETHEUR,tETHJPY,tETHGBP,tNEOEUR,tNEOJPY,tNEOGBP,tEOSEUR,tEOSJPY,tEOSGBP,tIOTJPY,tIOTGBP,tIOSUSD,tIOSBTC,tIOSETH,tAIOUSD,tAIOBTC,tAIOETH,tREQUSD,tREQBTC,tREQETH,tRDNUSD,tRDNBTC,tRDNETH,tLRCUSD,tLRCBTC,tLRCETH,tWAXUSD,tWAXBTC,tWAXETH,tDAIUSD,tDAIBTC,tDAIETH,tAGIUSD,tAGIBTC,tAGIETH,tBFTUSD,tBFTBTC,tBFTETH,tMTNUSD,tMTNBTC,tMTNETH,tODEUSD,tODEBTC,tODEETH,tANTUSD,tANTBTC,tANTETH,tDTHUSD,tDTHBTC,tDTHETH,tMITUSD,tMITBTC,tMITETH,tSTJUSD,tSTJBTC,tSTJETH,tXLMUSD,tXLMEUR,tXLMJPY,tXLMGBP,tXLMBTC,tXLMETH,tXVGUSD,tXVGEUR,tXVGJPY,tXVGGBP,tXVGBTC,tXVGETH,tBCIUSD,tBCIBTC,tMKRUSD,tMKRBTC,tMKRETH,tKNCUSD,tKNCBTC,tKNCETH,tPOAUSD,tPOABTC,tPOAETH,tEVTUSD,tLYMUSD,tLYMBTC,tLYMETH,tUTKUSD,tUTKBTC,tUTKETH,tVEEUSD,tVEEBTC,tVEEETH,tDADUSD,tDADBTC,tDADETH,tORSUSD,tORSBTC,tORSETH,tAUCUSD,tAUCBTC,tAUCETH,tPOYUSD,tPOYBTC,tPOYETH,tFSNUSD,tFSNBTC,tFSNETH,tCBTUSD,tCBTBTC,tCBTETH,tZCNUSD,tZCNBTC,tZCNETH,tSENUSD,tSENBTC,tSENETH,tNCAUSD,tNCABTC,tNCAETH,tCNDUSD,tCNDBTC,tCNDETH,tCTXUSD,tCTXBTC,tCTXETH,tPAIUSD,tPAIBTC,tSEEUSD,tSEEBTC,tSEEETH,tESSUSD,tESSBTC,tESSETH,tATMUSD,tATMBTC,tATMETH,tHOTUSD,tHOTBTC,tHOTETH,tDTAUSD,tDTABTC,tDTAETH,tIQXUSD,tIQXBTC,tIQXEOS,tWPRUSD,tWPRBTC,tWPRETH,tZILUSD,tZILBTC,tZILETH,tBNTUSD,tBNTBTC,tBNTETH,tABSUSD,tABSETH,tXRAUSD,tXRAETH,tMANUSD,tMANETH,tBBNUSD,tBBNETH,tNIOUSD,tNIOETH,tDGXUSD,tDGXETH,tVETUSD,tVETBTC,tVETETH,tUTNUSD,tUTNETH,tTKNUSD,tTKNETH,tGOTUSD,tGOTEUR,tGOTETH,tXTZUSD,tXTZBTC,tCNNUSD,tCNNETH,tBOXUSD,tBOXETH,tTRXEUR,tTRXGBP,tTRXJPY,tMGOUSD,tMGOETH,tRTEUSD,tRTEETH,tYGGUSD,tYGGETH,tMLNUSD,tMLNETH,tWTCUSD,tWTCETH,tCSXUSD,tCSXETH,tOMNUSD,tOMNBTC,tINTUSD,tINTETH,tDRNUSD,tDRNETH,tPNKUSD,tPNKETH,tDGBUSD,tDGBBTC,tBSVUSD,tBSVBTC,tBABUSD,tBABBTC,tWLOUSD,tWLOXLM,tVLDUSD,tVLDETH,tENJUSD,tENJETH,tONLUSD,tONLETH,tRBTUSD,tRBTBTC,tUSTUSD,tEUTEUR,tEUTUSD,tGSDUSD,tUDCUSD,tTSDUSD,tPAXUSD,tRIFUSD,tRIFBTC,tPASUSD,tPASETH,tVSYUSD,tVSYBTC,tZRXDAI,tMKRDAI,tOMGDAI,tBTTUSD,tBTTBTC,tBTCUST,tETHUST,tCLOUSD,tCLOBTC,tIMPUSD,tIMPETH,tLTCUST,tEOSUST,tBABUST,tSCRUSD,tSCRETH,tGNOUSD,tGNOETH,tGENUSD,tGENETH,tATOUSD,tATOBTC,tATOETH,tWBTUSD,tXCHUSD,tEUSUSD,tWBTETH,tXCHETH,tEUSETH,tLEOUSD,tLEOBTC,tLEOUST,tLEOEOS,tLEOETH,tASTUSD,tASTETH,tFOAUSD,tFOAETH,tUFRUSD,tUFRETH,tZBTUSD,tZBTUST,tOKBUSD,tUSKUSD,tGTXUSD,tKANUSD,tOKBUST,tOKBETH,tOKBBTC,tUSKUST,tUSKETH,tUSKBTC,tUSKEOS,tGTXUST,tKANUST,tAMPUSD,tALGUSD,tALGBTC,tALGUST,tBTCXCH,tSWMUSD,tSWMETH,tTRIUSD,tTRIETH,tLOOUSD,tLOOETH,tAMPUST,tDUSK:USD,tDUSK:BTC,tUOSUSD,tUOSBTC,tRRBUSD,tRRBUST,tDTXUSD,tDTXUST,tAMPBTC,tFTTUSD,tFTTUST,tPAXUST,tUDCUST,tTSDUST,tBTC:CNHT,tUST:CNHT,tCNH:CNHT,tCHZUSD,tCHZUST,tBTCF0:USTF0,tETHF0:USTF0"));
            services.AddRateProviderExchangeSharp<ExchangeOKExAPI>(new("okex", "OKEx", "https://www.okex.com/api/futures/v3/instruments/ticker"));
            services.AddRateProviderExchangeSharp<ExchangeCoinbaseAPI>(new("coinbasepro", "Coinbase Pro", "https://api.pro.coinbase.com/products"));


            // Handmade providers
            services.AddRateProvider<HitBTCRateProvider>();
            services.AddRateProvider<CoinGeckoRateProvider>();
            services.AddRateProvider<KrakenExchangeRateProvider>();
            services.AddRateProvider<ByllsRateProvider>();
            services.AddRateProvider<BudaRateProvider>();
            services.AddRateProvider<BitbankRateProvider>();
            services.AddRateProvider<BitnobRateProvider>();
            services.AddRateProvider<BitpayRateProvider>();
            services.AddRateProvider<RipioExchangeProvider>();
            services.AddRateProvider<CryptoMarketExchangeRateProvider>();
            services.AddRateProvider<BitflyerRateProvider>();
            services.AddRateProvider<YadioRateProvider>();
            services.AddRateProvider<BtcTurkRateProvider>();
            services.AddRateProvider<FreeCurrencyRatesRateProvider>();

            services.AddSingleton<InvoiceBlobMigratorHostedService>();
            services.AddSingleton<IHostedService, InvoiceBlobMigratorHostedService>(o => o.GetRequiredService<InvoiceBlobMigratorHostedService>());

            services.AddSingleton<PayoutBlobMigratorHostedService>();
            services.AddSingleton<IHostedService, PayoutBlobMigratorHostedService>(o => o.GetRequiredService<PayoutBlobMigratorHostedService>());

            // Broken
            // Providers.Add("argoneum", new ArgoneumRateProvider(_httpClientFactory?.CreateClient("EXCHANGE_ARGONEUM")));

            // Those exchanges make too many requests, exchange sharp do not parallelize so it is too slow...
            //AddExchangeSharpProviders<ExchangeGeminiAPI>("gemini");
            //AddExchangeSharpProviders<ExchangeBitstampAPI>("bitstamp");
            //AddExchangeSharpProviders<ExchangeBitMEXAPI>("bitmex");
        }

        public static void AddRateProvider<T>(this IServiceCollection services) where T : class, IRateProvider
        {
            services.AddSingleton<IRateProvider, T>();
        }
        public static IServiceCollection AddBTCPayNetwork(this IServiceCollection services, BTCPayNetworkBase network)
        {
            services.AddSingleton(new DefaultRules(network.DefaultRateRules));
            services.AddSingleton<BTCPayNetworkBase>(network);
            return services;
        }
        public static IServiceCollection AddBTCPayNetwork(this IServiceCollection services, BTCPayNetwork network)
        {
            services.AddSingleton(new DefaultRules(network.DefaultRateRules));
            // BTC
            {
                var pmi = PaymentTypes.CHAIN.GetPaymentMethodId(network.CryptoCode);
                services.AddSingleton<BTCPayNetworkBase>(network);
                services.AddSingleton<IPaymentMethodHandler>(provider =>
                (BitcoinLikePaymentHandler)ActivatorUtilities.CreateInstance(provider, typeof(BitcoinLikePaymentHandler), new object[] { network, pmi }));
                services.AddSingleton<IPaymentLinkExtension>(provider =>
(IPaymentLinkExtension)ActivatorUtilities.CreateInstance(provider, typeof(BitcoinPaymentLinkExtension), new object[] { network, pmi }));
                services.AddSingleton<IPaymentModelExtension>(provider =>
    (BitcoinPaymentModelExtension)ActivatorUtilities.CreateInstance(provider, typeof(BitcoinPaymentModelExtension), new object[] { network, pmi }));
                services.AddSingleton<IPaymentMethodBitpayAPIExtension>(provider =>
(IPaymentMethodBitpayAPIExtension)ActivatorUtilities.CreateInstance(provider, typeof(BitcoinPaymentMethodBitpayAPIExtension), new object[] { pmi }));
                services.AddSingleton<IPaymentMethodViewExtension>(provider =>
(IPaymentMethodViewExtension)ActivatorUtilities.CreateInstance(provider, typeof(BitcoinPaymentMethodViewExtension), new object[] { pmi }));

                if (!network.ReadonlyWallet && network.WalletSupported)
                {
                    var payoutMethodId = PayoutTypes.CHAIN.GetPayoutMethodId(network.CryptoCode);
                    services.AddSingleton<IPayoutHandler>(provider =>
    (IPayoutHandler)ActivatorUtilities.CreateInstance(provider, typeof(BitcoinLikePayoutHandler), new object[] { payoutMethodId, network }));
                }
            }
            if (network.NBitcoinNetwork.Consensus.SupportSegwit && network.SupportLightning)
            {
                // LN
                {
                    var pmi = PaymentTypes.LN.GetPaymentMethodId(network.CryptoCode);
                    services.AddSingleton<IPaymentMethodHandler>(provider =>
                    (LightningLikePaymentHandler)ActivatorUtilities.CreateInstance(provider, typeof(LightningLikePaymentHandler), new object[] { network, pmi }));
                    services.AddSingleton<IPaymentLinkExtension>(provider =>
(IPaymentLinkExtension)ActivatorUtilities.CreateInstance(provider, typeof(LightningPaymentLinkExtension), new object[] { network, pmi }));
                    services.AddSingleton<IPaymentModelExtension>(provider =>
                    (IPaymentModelExtension)ActivatorUtilities.CreateInstance(provider, typeof(LightningPaymentModelExtension), new object[] { network, pmi }));
                    services.AddSingleton<IPaymentMethodViewExtension>(provider =>
(IPaymentMethodViewExtension)ActivatorUtilities.CreateInstance(provider, typeof(LightningPaymentMethodViewExtension), new object[] { pmi }));
                    services.AddSingleton<IPaymentMethodBitpayAPIExtension>(provider =>
(IPaymentMethodBitpayAPIExtension)ActivatorUtilities.CreateInstance(provider, typeof(LightningPaymentMethodBitpayAPIExtension), new object[] { pmi }));
                    var payoutMethodId = PayoutTypes.LN.GetPayoutMethodId(network.CryptoCode);
                    services.AddSingleton<IPayoutHandler>(provider =>
    (IPayoutHandler)ActivatorUtilities.CreateInstance(provider, typeof(LightningLikePayoutHandler), new object[] { payoutMethodId, network }));
                }
                // LNURL
                {
                    var pmi = PaymentTypes.LNURL.GetPaymentMethodId(network.CryptoCode);
                    services.AddSingleton<IPaymentMethodHandler>(provider =>
    (LNURLPayPaymentHandler)ActivatorUtilities.CreateInstance(provider, typeof(LNURLPayPaymentHandler), new object[] { network, pmi }));
                    services.AddSingleton<IPaymentLinkExtension>(provider =>
                    (IPaymentLinkExtension)ActivatorUtilities.CreateInstance(provider, typeof(LNURLPayPaymentLinkExtension), new object[] { network, pmi }));
                    services.AddSingleton<IPaymentModelExtension>(provider =>
(IPaymentModelExtension)ActivatorUtilities.CreateInstance(provider, typeof(LNURLPayPaymentModelExtension), new object[] { network, pmi }));
                    services.AddSingleton<IPaymentMethodViewExtension>(provider =>
(IPaymentMethodViewExtension)ActivatorUtilities.CreateInstance(provider, typeof(LNURLPaymentMethodViewExtension), new object[] { pmi }));
                    services.AddSingleton<IPaymentMethodBitpayAPIExtension>(provider =>
(IPaymentMethodBitpayAPIExtension)ActivatorUtilities.CreateInstance(provider, typeof(LNURLPayPaymentMethodBitpayAPIExtension), new object[] { pmi }));
                }
            }
            return services;
        }
        public static void AddTransactionLinkProvider(this IServiceCollection services, string cryptoCode, TransactionLinkProvider provider)
        {
            services.AddSingleton<TransactionLinkProviders.Entry>(new TransactionLinkProviders.Entry(cryptoCode, provider));
        }
        public static void AddRateProviderExchangeSharp<T>(this IServiceCollection services, RateSourceInfo rateInfo) where T : ExchangeSharp.ExchangeAPI
        {
            services.AddSingleton<IRateProvider, ExchangeSharpRateProvider<T>>(o =>
            {
                var instance = ActivatorUtilities.CreateInstance<ExchangeSharpRateProvider<T>>(o);
                instance.RateSourceInfo = rateInfo;
                return instance;
            });
        }

        private static void AddSettingsAccessor<T>(IServiceCollection services) where T : class, new()
        {
            services.TryAddSingleton<ISettingsAccessor<T>, SettingsAccessor<T>>();
            services.AddSingleton<IHostedService>(provider => (SettingsAccessor<T>)provider.GetRequiredService<ISettingsAccessor<T>>());
            services.AddSingleton<IStartupTask>(provider => (SettingsAccessor<T>)provider.GetRequiredService<ISettingsAccessor<T>>());
            // Singletons shouldn't reference the settings directly, but ISettingsAccessor<T>, since singletons won't have refreshed values of the setting
            services.AddTransient<T>(provider => provider.GetRequiredService<ISettingsAccessor<T>>().Settings);
        }

        public static void SkipModelValidation<T>(this IServiceCollection services)
        {
            services.AddSingleton<SkippableObjectValidatorProvider.ISkipValidation, SkippableObjectValidatorProvider.SkipValidationType<T>>();
        }
        private const long MAX_DEBUG_LOG_FILE_SIZE = 2000000; // If debug log is in use roll it every N MB.
        private static void AddBtcPayServerAuthenticationSchemes(this IServiceCollection services)
        {
            services.AddAuthentication()
                .AddBitpayAuthentication()
                .AddAPIKeyAuthentication();
        }

        public static IApplicationBuilder UsePayServer(this IApplicationBuilder app)
        {
            app.UseMiddleware<GreenfieldMiddleware>();
            app.UseMiddleware<BTCPayMiddleware>();
            return app;
        }
        public static IApplicationBuilder UseHeadersOverride(this IApplicationBuilder app)
        {
            app.UseMiddleware<HeadersOverrideMiddleware>();
            return app;
        }
    }
}