package ru.foror.articles.common.tapestry.ioc;

import net.sf.ehcache.CacheManager;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.XMLConfiguration;
import org.apache.tapestry5.hibernate.HibernateTransactionDecorator;
import org.apache.tapestry5.hibernate.annotations.CommitAfter;
import org.apache.tapestry5.internal.services.LinkFactory;
import org.apache.tapestry5.internal.services.RequestPageCache;
import org.apache.tapestry5.ioc.Configuration;
import org.apache.tapestry5.ioc.MappedConfiguration;
import org.apache.tapestry5.ioc.ServiceBinder;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.ioc.annotations.Match;
import org.apache.tapestry5.ioc.annotations.Symbol;
import org.apache.tapestry5.services.ApplicationGlobals;
import org.apache.tapestry5.services.ApplicationStateContribution;
import org.apache.tapestry5.services.ApplicationStateCreator;
import org.apache.tapestry5.services.ApplicationStateManager;
import org.apache.tapestry5.services.ComponentEventRequestHandler;
import org.apache.tapestry5.services.Cookies;
import org.apache.tapestry5.services.LibraryMapping;
import org.apache.tapestry5.services.PageRenderRequestHandler;
import org.apache.tapestry5.services.Response;

import ru.foror.articles.common.domain.LoginAccount;
import ru.foror.articles.common.operations.ILoginOperations;
import ru.foror.articles.common.operations.ISearchOperations;
import ru.foror.articles.common.operations.ITagOperations;
import ru.foror.articles.common.operations.IUniversalOperations;
import ru.foror.articles.common.operations.impl.SearchOperations;
import ru.foror.articles.common.operations.impl.TagOperations;
import ru.foror.articles.common.operations.impl.UniversalOperations;
import ru.foror.articles.common.tapestry.common.AuthHelper;
import ru.foror.articles.common.tapestry.common.IAuthHelper;
import ru.foror.articles.common.tapestry.common.SecurityHandler;

/**
 * Модуль common для IoC движка Tapestry.
 * 
 * @author Alexey Pomogaev foror@mail.ru
 */
public class Module {
	
	public void contributeComponentClassResolver(Configuration<LibraryMapping> configuration) {
		configuration.add(new LibraryMapping("common", "ru.foror.articles.common.tapestry"));
	}
	
	/**
	 * Глобальная конфигурация системы.
	 */
	public void contributeApplicationDefaults(MappedConfiguration<String, String> configuration) {
		configuration.add("common.config-path", "/WEB-INF/local.config.xml");
		configuration.add("common.wymeditor-core", "classpath:ru/foror/articles/common/wymeditor/jquery.wymeditor.pack.js");
		configuration.add("common.wymeditor-config", "classpath:ru/foror/articles/common/wymeditor/default.config.js");
		configuration.add("common.jquery", "classpath:ru/foror/articles/common/jquery/jquery.js");
	}

	public static void bind(ServiceBinder binder) {
		binder.bind(ITagOperations.class, TagOperations.class);
		binder.bind(IUniversalOperations.class, UniversalOperations.class);
		binder.bind(ISearchOperations.class, SearchOperations.class);
	}
	
	/**
	 * Сервис для работы с XML конфигурацией проекта - local.config.xml. 
	 */
	public org.apache.commons.configuration.Configuration buildConfiguration(
			@Inject @Symbol("common.config-path") 
			String configPath,
			
			@Inject
			ApplicationGlobals g) {
		
		try {
			String path = g.getServletContext().getRealPath(configPath);
			return new XMLConfiguration(path);
		} catch (ConfigurationException e) {
			throw new RuntimeException(e);
		}
	}
	
	public IAuthHelper buildAuthHelper(
			@Inject @Symbol("tapestry.start-page-name")
            String startPageName,
			
			@Inject
			ApplicationStateManager appStateManager,
			
			@Inject
			Cookies cookies,
			
			@Inject
			ILoginOperations loginOp) {
		
		return new AuthHelper(startPageName, appStateManager, cookies, loginOp);
	}
	
	/**
	 * Декоратор для перехвата запросов к страницам Tapestry.
	 */
	public PageRenderRequestHandler decoratePageRenderRequestHandler(
			Object delegate,
			
			@Inject
			IAuthHelper authHelper,
			 
			@Inject
			ApplicationStateManager appStateManager,
			
			@Inject
			Response response,
			
			@Inject
			LinkFactory linkFactory,
			
			@Inject
			RequestPageCache cache) {
		
		return new SecurityHandler((PageRenderRequestHandler) delegate, authHelper, 
				appStateManager, response, linkFactory, cache);
    }
	
	/**
	 * Декоратор для перехвата запросов к страницам вызванных через события Tapestry.
	 */
	public ComponentEventRequestHandler decorateComponentEventRequestHandler(
			Object delegate,
			
			@Inject
			IAuthHelper authHelper,
			 
			@Inject
			ApplicationStateManager appStateManager,
			
			@Inject
			Response response,
			
			@Inject
			LinkFactory linkFactory,
			
			@Inject
			RequestPageCache cache) {
		
		return new SecurityHandler((ComponentEventRequestHandler) delegate, authHelper, 
				appStateManager, response, linkFactory, cache);
    }
	
	/**
	 * Распределённый кеш.
	 */
	public CacheManager buildDefaultCacheManager() {
		return new CacheManager(CacheManager.class.getResource("/default.ehcache.xml"));
	}
	
	public void contributeApplicationStateManager(MappedConfiguration
			<Class<?>, ApplicationStateContribution> configuration) {
		
		ApplicationStateCreator<LoginAccount> loginAccount = 
			new ApplicationStateCreator<LoginAccount>() {
				public LoginAccount create() {
					return new LoginAccount();
				}
			};
			
		configuration.add(LoginAccount.class, 
				new ApplicationStateContribution("session", loginAccount));
	}
	
	/**
	 * Все сервисы, названия которых оканчивается на Operations будут проверяться
	 * на {@link CommitAfter} аннотацию. 
	 */
	@Match("*Operations")
	public static <T> T decorateTransactionally(HibernateTransactionDecorator decorator, 
			Class<T> serviceInterface, T delegate, String serviceId) {
		return decorator.build(serviceInterface, delegate, serviceId);
	}
	
    public static void contributeHibernateEntityPackageManager(Configuration<String> configuration) {
    	configuration.add("ru.foror.articles.common.domain");
    }
}