using System.Data.Common;
using System.Net.Http.Headers;
using System.Reflection;
using Dazinator.Extensions.FileProviders.GlobPatternFilter;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.DataProtection.Infrastructure;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc.ApplicationModels;
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Serilog.Extensions.Logging;
using Umbraco.Cms.Core;
using Umbraco.Cms.Core.Blocks;
using Umbraco.Cms.Core.Cache;
using Umbraco.Cms.Core.Composing;
using Umbraco.Cms.Core.Configuration;
using Umbraco.Cms.Core.Configuration.Models;
using Umbraco.Cms.Core.DependencyInjection;
using Umbraco.Cms.Core.Diagnostics;
using Umbraco.Cms.Core.Extensions;
using Umbraco.Cms.Core.Hosting;
using Umbraco.Cms.Core.IO;
using Umbraco.Cms.Core.Logging;
using Umbraco.Cms.Core.Net;
using Umbraco.Cms.Core.Notifications;
using Umbraco.Cms.Core.Persistence.Repositories;
using Umbraco.Cms.Core.Security;
using Umbraco.Cms.Core.Services;
using Umbraco.Cms.Core.Templates;
using Umbraco.Cms.Core.Web;
using Umbraco.Cms.Infrastructure.BackgroundJobs;
using Umbraco.Cms.Infrastructure.BackgroundJobs.Jobs;
using Umbraco.Cms.Infrastructure.BackgroundJobs.Jobs.ServerRegistration;
using Umbraco.Cms.Infrastructure.DependencyInjection;
using Umbraco.Cms.Infrastructure.HostedServices;
using Umbraco.Cms.Infrastructure.Migrations.Install;
using Umbraco.Cms.Infrastructure.Persistence;
using Umbraco.Cms.Infrastructure.Persistence.SqlSyntax;
using Umbraco.Cms.Web.Common;
using Umbraco.Cms.Web.Common.ApplicationModels;
using Umbraco.Cms.Web.Common.AspNetCore;
using Umbraco.Cms.Web.Common.Blocks;
using Umbraco.Cms.Web.Common.Configuration;
using Umbraco.Cms.Web.Common.Controllers;
using Umbraco.Cms.Web.Common.DependencyInjection;
using Umbraco.Cms.Web.Common.FileProviders;
using Umbraco.Cms.Web.Common.Localization;
using Umbraco.Cms.Web.Common.Middleware;
using Umbraco.Cms.Web.Common.ModelBinders;
using Umbraco.Cms.Web.Common.Mvc;
using Umbraco.Cms.Web.Common.Profiler;
using Umbraco.Cms.Web.Common.Repositories;
using Umbraco.Cms.Web.Common.Security;
using Umbraco.Cms.Web.Common.Templates;
using Umbraco.Cms.Web.Common.UmbracoContext;
using IHostingEnvironment = Umbraco.Cms.Core.Hosting.IHostingEnvironment;

namespace Umbraco.Extensions;

// TODO: We could add parameters to configure each of these for flexibility

/// <summary>
///     Extension methods for <see cref="IUmbracoBuilder" /> for the common Umbraco functionality
/// </summary>
public static partial class UmbracoBuilderExtensions
{
    /// <summary>
    ///     Creates an <see cref="IUmbracoBuilder" /> and registers basic Umbraco services
    /// </summary>
    public static IUmbracoBuilder AddUmbraco(
        this IServiceCollection services,
        IWebHostEnvironment webHostEnvironment,
        IConfiguration config)
    {
        if (services is null)
        {
            throw new ArgumentNullException(nameof(services));
        }

        if (config is null)
        {
            throw new ArgumentNullException(nameof(config));
        }

        // Setup static application logging ASAP (e.g. during configure services).
        // Will log to SilentLogger until Serilog.Log.Logger is setup.
        StaticApplicationLogging.Initialize(new SerilogLoggerFactory());

        // The DataDirectory is used to resolve database file paths (directly supported by SQL CE and manually replaced for LocalDB)
        AppDomain.CurrentDomain.SetData(
            "DataDirectory",
            webHostEnvironment.MapPathContentRoot(Constants.SystemDirectories.Data));

        // Manually create and register the HttpContextAccessor. In theory this should not be registered
        // again by the user but if that is the case it's not the end of the world since HttpContextAccessor
        // is just based on AsyncLocal, see https://github.com/dotnet/aspnetcore/blob/main/src/Http/Http/src/HttpContextAccessor.cs
        IHttpContextAccessor httpContextAccessor = new HttpContextAccessor();
        services.AddSingleton(httpContextAccessor);

        var requestCache = new HttpContextRequestAppCache(httpContextAccessor);
        var appCaches = AppCaches.Create(requestCache);

        services.ConfigureOptions<ConfigureKestrelServerOptions>();
        services.ConfigureOptions<ConfigureFormOptions>();

        IProfiler profiler = GetWebProfiler(config, httpContextAccessor);

        services.AddLogger(webHostEnvironment, config);

        ILoggerFactory loggerFactory = new SerilogLoggerFactory();

        TypeLoader typeLoader = services.AddTypeLoader(Assembly.GetEntryAssembly(), loggerFactory, config);

        IHostingEnvironment tempHostingEnvironment = GetTemporaryHostingEnvironment(webHostEnvironment, config);
        return new UmbracoBuilder(services, config, typeLoader, loggerFactory, profiler, appCaches, tempHostingEnvironment);
    }

    /// <summary>
    ///     Adds core Umbraco services
    /// </summary>
    /// <remarks>
    ///     This will not add any composers/components
    /// </remarks>
    public static IUmbracoBuilder AddUmbracoCore(this IUmbracoBuilder builder)
    {
        if (builder is null)
        {
            throw new ArgumentNullException(nameof(builder));
        }

        // Add ASP.NET specific services
        builder.Services.AddUnique<IBackOfficeInfo, AspNetCoreBackOfficeInfo>();
        builder.Services.AddUnique<IHostingEnvironment>(sp =>
            ActivatorUtilities.CreateInstance<AspNetCoreHostingEnvironment>(
                sp,
                sp.GetRequiredService<IApplicationDiscriminator>()));

        builder.Services.AddSingleton<DatabaseSchemaCreatorFactory>();
        builder.Services.TryAddEnumerable(ServiceDescriptor
            .Singleton<IDatabaseProviderMetadata, CustomConnectionStringDatabaseProviderMetadata>());

        // WebRootFileProviderFactory is just a wrapper around the IWebHostEnvironment.WebRootFileProvider,
        // therefore no need to register it as singleton
        builder.Services.AddSingleton<IGridEditorsConfigFileProviderFactory, WebRootFileProviderFactory>();
        builder.Services.AddSingleton<IPackageManifestFileProviderFactory, ContentAndWebRootFileProviderFactory>();

        // Must be added here because DbProviderFactories is netstandard 2.1 so cannot exist in Infra for now
        builder.Services.AddSingleton<IDbProviderFactoryCreator>(factory => new DbProviderFactoryCreator(
            DbProviderFactories.GetFactory,
            factory.GetServices<ISqlSyntaxProvider>(),
            factory.GetServices<IBulkSqlInsertProvider>(),
            factory.GetServices<IDatabaseCreator>(),
            factory.GetServices<IProviderSpecificMapperFactory>(),
            factory.GetServices<IProviderSpecificInterceptor>()));

        builder.AddCoreInitialServices();
        builder.AddTelemetryProviders();

        // aspnet app lifetime mgmt
        builder.Services.AddUnique<IUmbracoApplicationLifetime, AspNetCoreUmbracoApplicationLifetime>();
        builder.Services.AddUnique<IApplicationShutdownRegistry, AspNetCoreApplicationShutdownRegistry>();
        builder.Services.AddTransient<IIpAddressUtilities, IpAddressUtilities>();

        return builder;
    }

    /// <summary>
    ///     Add Umbraco recurring background jobs
    /// </summary>
    public static IUmbracoBuilder AddRecurringBackgroundJobs(this IUmbracoBuilder builder)
    {
        // Add background jobs
        builder.Services.AddRecurringBackgroundJob<HealthCheckNotifierJob>();
        builder.Services.AddRecurringBackgroundJob<LogScrubberJob>();
        builder.Services.AddRecurringBackgroundJob<ContentVersionCleanupJob>();
        builder.Services.AddRecurringBackgroundJob<ScheduledPublishingJob>();
        builder.Services.AddRecurringBackgroundJob<TempFileCleanupJob>();
        builder.Services.AddRecurringBackgroundJob<TemporaryFileCleanupJob>();
        builder.Services.AddRecurringBackgroundJob<InstructionProcessJob>();
        builder.Services.AddRecurringBackgroundJob<TouchServerJob>();
        builder.Services.AddRecurringBackgroundJob<WebhookFiring>();
        builder.Services.AddRecurringBackgroundJob<WebhookLoggingCleanup>();
        builder.Services.AddRecurringBackgroundJob<ReportSiteJob>();


        builder.Services.AddSingleton(RecurringBackgroundJobHostedService.CreateHostedServiceFactory);
        builder.Services.AddHostedService<RecurringBackgroundJobHostedServiceRunner>();
        builder.Services.AddHostedService<QueuedHostedService>();

        return builder;
    }

    /// <summary>
    ///     Adds the Umbraco request profiler
    /// </summary>
    public static IUmbracoBuilder AddUmbracoProfiler(this IUmbracoBuilder builder)
    {
        builder.Services.AddSingleton<WebProfilerHtml>();

        builder.Services.AddMiniProfiler();
        builder.Services.ConfigureOptions<ConfigureMiniProfilerOptions>();

        builder.Services.AddSingleton<IWebProfilerRepository, WebProfilerRepository>();

        builder.AddNotificationHandler<UmbracoApplicationStartingNotification, InitializeWebProfiling>();
        return builder;
    }

    private static IUmbracoBuilder AddHttpClients(this IUmbracoBuilder builder)
    {
        builder.Services.AddHttpClient();
        builder.Services.AddHttpClient(Constants.HttpClients.IgnoreCertificateErrors)
            .ConfigurePrimaryHttpMessageHandler(() => new HttpClientHandler
            {
                ServerCertificateCustomValidationCallback =
                    HttpClientHandler.DangerousAcceptAnyServerCertificateValidator,
            });
        builder.Services.AddHttpClient(Constants.HttpClients.WebhookFiring, (services, client) =>
        {
            var productVersion = services.GetRequiredService<IUmbracoVersion>().SemanticVersion.ToSemanticStringWithoutBuild();
            client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue(Constants.HttpClients.Headers.UserAgentProductName, productVersion));
        });
        return builder;
    }

    public static IUmbracoBuilder AddMvcAndRazor(this IUmbracoBuilder builder, Action<IMvcBuilder>? mvcBuilding = null)
    {
        // TODO: We need to figure out if we can work around this because calling AddControllersWithViews modifies the global app and order is very important
        // this will directly affect developers who need to call that themselves.
        IMvcBuilder mvcBuilder = builder.Services.AddControllersWithViews();

        if (builder.Config.GetRuntimeMode() != RuntimeMode.Production)
        {
            mvcBuilder.AddRazorRuntimeCompilation();
        }

        mvcBuilding?.Invoke(mvcBuilder);

        return builder;
    }

    /// <summary>
    ///     Adds all web based services required for Umbraco to run
    /// </summary>
    public static IUmbracoBuilder AddWebComponents(this IUmbracoBuilder builder)
    {
        // Add service session
        // This can be overwritten by the user by adding their own call to AddSession
        // since the last call of AddSession take precedence
        builder.Services.AddSession(options =>
        {
            options.Cookie.Name = "UMB_SESSION";
            options.Cookie.HttpOnly = true;
        });

        builder.Services.ConfigureOptions<ConfigureApiVersioningOptions>();
        builder.Services.ConfigureOptions<ConfigureApiExplorerOptions>();
        builder.Services.AddApiVersioning().AddApiExplorer();
        builder.Services.ConfigureOptions<UmbracoMvcConfigureOptions>();
        builder.Services.ConfigureOptions<UmbracoRequestLocalizationOptions>();
        builder.Services.TryAddEnumerable(ServiceDescriptor
            .Transient<IApplicationModelProvider, VirtualPageApplicationModelProvider>());

        // AspNetCore specific services
        builder.Services.AddUnique<IRequestAccessor, AspNetCoreRequestAccessor>();
        builder.AddNotificationHandler<UmbracoRequestBeginNotification, AspNetCoreRequestAccessor>();
        builder.AddNotificationHandler<UmbracoRequestBeginNotification, ApplicationUrlRequestBeginNotificationHandler>();

        // Password hasher
        builder.Services.AddUnique<IPasswordHasher, AspNetCorePasswordHasher>();

        builder.Services.AddUnique<ICookieManager, AspNetCoreCookieManager>();
        builder.Services.AddTransient<IIpResolver, AspNetCoreIpResolver>();
        builder.Services.AddUnique<IUserAgentProvider, AspNetCoreUserAgentProvider>();

        builder.Services.AddMultipleUnique<ISessionIdResolver, ISessionManager, AspNetCoreSessionManager>();

        builder.Services.AddUnique<IMarchal, AspNetCoreMarchal>();

        builder.Services.AddUnique<IProfilerHtml, WebProfilerHtml>();

        builder.Services.AddSingleton<IPartialViewBlockEngine, PartialViewBlockEngine>();

        // register the umbraco context factory
        builder.Services.AddUnique<IUmbracoContextFactory, UmbracoContextFactory>();
        builder.Services.AddUnique<IBackOfficeSecurityAccessor, BackOfficeSecurityAccessor>();

        builder.Services.AddSingleton<UmbracoRequestLoggingMiddleware>();
        builder.Services.AddSingleton<PreviewAuthenticationMiddleware>();
        builder.Services.AddSingleton<UmbracoRequestMiddleware>();
        builder.Services.AddSingleton<BootFailedMiddleware>();

        builder.Services.AddUnique<ITemplateRenderer, TemplateRenderer>();
        builder.Services.AddUnique<IPublicAccessChecker, PublicAccessChecker>();

        builder.Services.AddSingleton<ContentModelBinder>();

        builder.Services.AddSingleton<IUmbracoHelperAccessor, UmbracoHelperAccessor>();
        builder.Services.AddSingleton<IScopedServiceProvider, ScopedServiceProvider>();
        builder.Services.AddScoped<UmbracoHelper>();
        builder.Services.AddScoped<IBackOfficeSecurity, BackOfficeSecurity>();

        builder.AddHttpClients();

        return builder;
    }

    // TODO: Does this need to exist and/or be public?
    public static IUmbracoBuilder AddWebServer(this IUmbracoBuilder builder)
    {
        // TODO: We need to figure out why this is needed and fix those endpoints to not need them, we don't want to change global things
        // If using Kestrel: https://stackoverflow.com/a/55196057
        builder.Services.Configure<KestrelServerOptions>(options =>
        {
            options.AllowSynchronousIO = true;
        });
        builder.Services.Configure<IISServerOptions>(options =>
        {
            options.AllowSynchronousIO = true;
        });

        return builder;
    }

    private static IProfiler GetWebProfiler(IConfiguration config, IHttpContextAccessor httpContextAccessor)
    {
        var isDebug = config.GetValue<bool>($"{Constants.Configuration.ConfigHosting}:Debug");

        // create and start asap to profile boot
        if (!isDebug)
        {
            // should let it be null, that's how MiniProfiler is meant to work,
            // but our own IProfiler expects an instance so let's get one
            return new NoopProfiler();
        }

        var webProfiler = new WebProfiler(httpContextAccessor);
        webProfiler.StartBoot();

        return webProfiler;
    }

    /// <summary>
    ///     HACK: returns an AspNetCoreHostingEnvironment that doesn't monitor changes to configuration.<br />
    ///     We require this to create a TypeLoader during ConfigureServices.<br />
    ///     Instances returned from this method shouldn't be registered in the service collection.
    /// </summary>
    private static IHostingEnvironment GetTemporaryHostingEnvironment(
        IWebHostEnvironment webHostEnvironment,
        IConfiguration config)
    {
        HostingSettings hostingSettings =
            config.GetSection(Constants.Configuration.ConfigHosting).Get<HostingSettings>() ?? new HostingSettings();
        var wrappedHostingSettings = new OptionsMonitorAdapter<HostingSettings>(hostingSettings);

        WebRoutingSettings webRoutingSettings =
            config.GetSection(Constants.Configuration.ConfigWebRouting).Get<WebRoutingSettings>() ??
            new WebRoutingSettings();
        var wrappedWebRoutingSettings = new OptionsMonitorAdapter<WebRoutingSettings>(webRoutingSettings);

        return new AspNetCoreHostingEnvironment(
            wrappedHostingSettings,
            wrappedWebRoutingSettings,
            webHostEnvironment);
    }
}