using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;
using System.Web.Routing;
using Umbraco.Core;
using Umbraco.Core.Configuration;
using Umbraco.Core.Dictionary;
using Umbraco.Core.Dynamics;
using Umbraco.Core.PropertyEditors;
using Umbraco.Web.Dictionary;
using Umbraco.Web.Media;
using Umbraco.Web.Media.ThumbnailProviders;
using Umbraco.Web.Models;
using Umbraco.Web.Mvc;
using Umbraco.Web.PropertyEditors;
using Umbraco.Web.Routing;
using umbraco.businesslogic;
using umbraco.cms.businesslogic;


namespace Umbraco.Web
{
	/// <summary>
	/// A bootstrapper for the Umbraco application which initializes all objects including the Web portion of the application 
	/// </summary>
	public class WebBootManager : CoreBootManager
	{
		private readonly bool _isForTesting;
		private readonly UmbracoApplication _umbracoApplication;

		public WebBootManager(UmbracoApplication umbracoApplication)
			: this(umbracoApplication, false)
		{
			
		}

		/// <summary>
		/// Constructor for unit tests, ensures some resolvers are not initialized
		/// </summary>
		/// <param name="umbracoApplication"></param>
		/// <param name="isForTesting"></param>
		internal WebBootManager(UmbracoApplication umbracoApplication, bool isForTesting)
		{
			_isForTesting = isForTesting;
			_umbracoApplication = umbracoApplication;
			if (umbracoApplication == null) throw new ArgumentNullException("umbracoApplication");
		}
		
		/// <summary>
		/// Initialize objects before anything during the boot cycle happens
		/// </summary>
		/// <returns></returns>
		public override IBootManager Initialize()
		{
			base.Initialize();

			// Backwards compatibility - set the path and URL type for ClientDependency 1.5.1 [LK]
			ClientDependency.Core.CompositeFiles.Providers.XmlFileMapper.FileMapVirtualFolder = "~/App_Data/TEMP/ClientDependency";
			ClientDependency.Core.CompositeFiles.Providers.BaseCompositeFileProcessingProvider.UrlTypeDefault = ClientDependency.Core.CompositeFiles.Providers.CompositeUrlType.Base64QueryStrings;

			//set master controller factory
			ControllerBuilder.Current.SetControllerFactory(
				new MasterControllerFactory(FilteredControllerFactoriesResolver.Current));

			//set the render view engine
			ViewEngines.Engines.Add(new RenderViewEngine());
			//set the plugin view engine
			ViewEngines.Engines.Add(new PluginViewEngine());

			//set model binder
			ModelBinders.Binders.Add(new KeyValuePair<Type, IModelBinder>(typeof(RenderModel), new RenderModelBinder()));


			//find and initialize the application startup handlers, we need to initialize this resolver here because
			//it is a special resolver where they need to be instantiated first before any other resolvers in order to bind to 
			//events and to call their events during bootup.
			//ApplicationStartupHandler.RegisterHandlers();
			//... and set the special flag to let us resolve before frozen resolution
			ApplicationEventsResolver.Current = new ApplicationEventsResolver(
				PluginManager.Current.ResolveApplicationStartupHandlers())
				{
					CanResolveBeforeFrozen = true
				};
			//add the internal types since we don't want to mark these public
			ApplicationEventsResolver.Current.AddType<CacheHelperExtensions.CacheHelperApplicationEventListener>();
			ApplicationEventsResolver.Current.AddType<LegacyScheduledTasks>();

			//now we need to call the initialize methods
			ApplicationEventsResolver.Current.ApplicationEventHandlers
				.ForEach(x => x.OnApplicationInitialized(_umbracoApplication, ApplicationContext));

			return this;
		}

		/// <summary>
		/// Ensure that the OnApplicationStarting methods of the IApplicationEvents are called
		/// </summary>
		/// <param name="afterStartup"></param>
		/// <returns></returns>
		public override IBootManager Startup(Action<ApplicationContext> afterStartup)
		{
			base.Startup(afterStartup);

			//call OnApplicationStarting of each application events handler
			ApplicationEventsResolver.Current.ApplicationEventHandlers
				.ForEach(x => x.OnApplicationStarting(_umbracoApplication, ApplicationContext));

			return this;
		}

		/// <summary>
		/// Ensure that the OnApplicationStarted methods of the IApplicationEvents are called
		/// </summary>
		/// <param name="afterComplete"></param>
		/// <returns></returns>
		public override IBootManager Complete(Action<ApplicationContext> afterComplete)
		{
			//set routes
			CreateRoutes();

			base.Complete(afterComplete);

			//call OnApplicationStarting of each application events handler
			ApplicationEventsResolver.Current.ApplicationEventHandlers
				.ForEach(x => x.OnApplicationStarted(_umbracoApplication, ApplicationContext));

			// we're ready to serve content!
			ApplicationContext.IsReady = true;

			return this;
		}

		/// <summary>
		/// Creates the routes
		/// </summary>
		protected internal void CreateRoutes()
		{
			var umbracoPath = GlobalSettings.UmbracoMvcArea;

			//Create the front-end route
			var defaultRoute = RouteTable.Routes.MapRoute(
				"Umbraco_default",
				"Umbraco/RenderMvc/{action}/{id}",
				new { controller = "RenderMvc", action = "Index", id = UrlParameter.Optional }
				);
			defaultRoute.RouteHandler = new RenderRouteHandler(ControllerBuilder.Current.GetControllerFactory());

			//Create the install routes
			var installPackageRoute = RouteTable.Routes.MapRoute(
				"Umbraco_install_packages",
				"Install/PackageInstaller/{action}/{id}",
				new { controller = "InstallPackage", action = "Index", id = UrlParameter.Optional }
				);
			installPackageRoute.DataTokens.Add("area", umbracoPath);

			//Create the REST/web/script service routes
			var webServiceRoutes = RouteTable.Routes.MapRoute(
				"Umbraco_web_services",
				"Umbraco/RestServices/{controller}/{action}/{id}",
				new {controller = "SaveFileController", action = "Index", id = UrlParameter.Optional},
				//VERY IMPORTANT! for this route, only match controllers in this namespace!
				new string[] { "Umbraco.Web.WebServices" }
				);
			webServiceRoutes.DataTokens.Add("area", umbracoPath);

			//we need to find the surface controllers and route them
			var surfaceControllers = SurfaceControllerResolver.Current.RegisteredSurfaceControllers.ToArray();

			//local surface controllers do not contain the attribute 			
			var localSurfaceControlleres = surfaceControllers.Where(x => PluginController.GetMetadata(x).AreaName.IsNullOrWhiteSpace());
			foreach (var s in localSurfaceControlleres)
			{
				var meta = PluginController.GetMetadata(s);
				var route = RouteTable.Routes.MapRoute(
					string.Format("umbraco-{0}-{1}", "surface", meta.ControllerName),
					umbracoPath + "/Surface/" + meta.ControllerName + "/{action}/{id}",//url to match
					new { controller = meta.ControllerName, action = "Index", id = UrlParameter.Optional },
					new[] { meta.ControllerNamespace }); //only match this namespace
				route.DataTokens.Add("umbraco", "surface"); //ensure the umbraco token is set
			}
			
			//need to get the plugin controllers that are unique to each area (group by)
			//TODO: One day when we have more plugin controllers, we will need to do a group by on ALL of them to pass into the ctor of PluginControllerArea
			var pluginSurfaceControlleres = surfaceControllers.Where(x => !PluginController.GetMetadata(x).AreaName.IsNullOrWhiteSpace());
			var groupedAreas = pluginSurfaceControlleres.GroupBy(controller => PluginController.GetMetadata(controller).AreaName);
			//loop through each area defined amongst the controllers
			foreach(var g in groupedAreas)
			{
				//create an area for the controllers (this will throw an exception if all controllers are not in the same area)
				var pluginControllerArea = new PluginControllerArea(g.Select(PluginController.GetMetadata));
				//register it
				RouteTable.Routes.RegisterArea(pluginControllerArea);
			}
		}

		

		/// <summary>
		/// Initializes all web based and core resolves 
		/// </summary>
		protected override void InitializeResolvers()
		{
			base.InitializeResolvers();

			//TODO: This needs to be removed in future versions (i.e. 6.0 when the PublishedContentHelper can access the business logic)
			// see the TODO noted in the PublishedContentHelper.
			PublishedContentHelper.GetDataTypeCallback = ContentType.GetDataType;

			SurfaceControllerResolver.Current = new SurfaceControllerResolver(
				PluginManager.Current.ResolveSurfaceControllers());

			//the base creates the PropertyEditorValueConvertersResolver but we want to modify it in the web app and replace
			//the TinyMcePropertyEditorValueConverter with the RteMacroRenderingPropertyEditorValueConverter
			PropertyEditorValueConvertersResolver.Current.RemoveType<TinyMcePropertyEditorValueConverter>();
			PropertyEditorValueConvertersResolver.Current.AddType<RteMacroRenderingPropertyEditorValueConverter>();

			PublishedContentStoreResolver.Current = new PublishedContentStoreResolver(new DefaultPublishedContentStore());
			PublishedMediaStoreResolver.Current = new PublishedMediaStoreResolver(new DefaultPublishedMediaStore());

			FilteredControllerFactoriesResolver.Current = new FilteredControllerFactoriesResolver(
				//add all known factories, devs can then modify this list on application startup either by binding to events
				//or in their own global.asax
				new[]
					{
						typeof (RenderControllerFactory)
					});

			LastChanceLookupResolver.Current = new LastChanceLookupResolver(new DefaultLastChanceLookup());

			DocumentLookupsResolver.Current = new DocumentLookupsResolver(
				//add all known resolvers in the correct order, devs can then modify this list on application startup either by binding to events
				//or in their own global.asax
				new[]
					{
						typeof (LookupByPageIdQuery),
						typeof (LookupByNiceUrl),
						typeof (LookupByIdPath),
						typeof (LookupByNiceUrlAndTemplate),
						typeof (LookupByProfile),
						typeof (LookupByAlias)
					});

			RoutesCacheResolver.Current = new RoutesCacheResolver(new DefaultRoutesCache(_isForTesting == false));

			ThumbnailProvidersResolver.Current = new ThumbnailProvidersResolver(
				PluginManager.Current.ResolveThumbnailProviders());

            ImageUrlProviderResolver.Current = new ImageUrlProviderResolver(
                PluginManager.Current.ResolveImageUrlProviders());

			CultureDictionaryFactoryResolver.Current = new CultureDictionaryFactoryResolver(
				new DefaultCultureDictionaryFactory());

		}

	}
}