/*
 * Copyright 2013 gitblit.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gitblit.tests;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.Principal;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import javax.servlet.AsyncContext;
import javax.servlet.DispatcherType;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionContext;
import javax.servlet.http.HttpUpgradeHandler;
import javax.servlet.http.Part;

import org.junit.Test;

import com.gitblit.IUserService;
import com.gitblit.Keys;
import com.gitblit.manager.AuthenticationManager;
import com.gitblit.manager.IAuthenticationManager;
import com.gitblit.manager.IRuntimeManager;
import com.gitblit.manager.RuntimeManager;
import com.gitblit.manager.UserManager;
import com.gitblit.models.TeamModel;
import com.gitblit.models.UserModel;
import com.gitblit.tests.mock.MemorySettings;
import com.gitblit.utils.XssFilter;
import com.gitblit.utils.XssFilter.AllowXssFilter;

/**
 * Class for testing local authentication.
 *
 * @author James Moger
 *
 */
@SuppressWarnings("deprecation")
public class AuthenticationManagerTest extends GitblitUnitTest {

	UserManager users;

	private static final class DummyHttpServletRequest implements HttpServletRequest {

		@Override
		public Object getAttribute(String name) {
			return null;
		}

		@Override
		public Enumeration<String> getAttributeNames() {
			return null;
		}

		@Override
		public String getCharacterEncoding() {
			return null;
		}

		@Override
		public void setCharacterEncoding(String env)
				throws UnsupportedEncodingException {
		}

		@Override
		public int getContentLength() {
			return 0;
		}

		@Override
		public long getContentLengthLong() {
			return 0;
		}

		@Override
		public String getContentType() {
			return null;
		}

		@Override
		public ServletInputStream getInputStream() throws IOException {
			return null;
		}

		@Override
		public String getParameter(String name) {
			return null;
		}

		@Override
		public Enumeration<String> getParameterNames() {
			return null;
		}

		@Override
		public String[] getParameterValues(String name) {
			return null;
		}

		@Override
		public Map<String, String[]> getParameterMap() {
			return null;
		}

		@Override
		public String getProtocol() {
			return null;
		}

		@Override
		public String getScheme() {
			return null;
		}

		@Override
		public String getServerName() {
			return null;
		}

		@Override
		public int getServerPort() {
			return 0;
		}

		@Override
		public BufferedReader getReader() throws IOException {
			return null;
		}

		@Override
		public String getRemoteAddr() {
			return null;
		}

		@Override
		public String getRemoteHost() {
			return null;
		}

		@Override
		public void setAttribute(String name, Object o) {
		}

		@Override
		public void removeAttribute(String name) {
		}

		@Override
		public Locale getLocale() {
			return null;
		}

		@Override
		public Enumeration<Locale> getLocales() {
			return null;
		}

		@Override
		public boolean isSecure() {
			return false;
		}

		@Override
		public RequestDispatcher getRequestDispatcher(String path) {
			return null;
		}

		@Override
		public String getRealPath(String path) {
			return null;
		}

		@Override
		public int getRemotePort() {
			return 0;
		}

		@Override
		public String getLocalName() {
			return null;
		}

		@Override
		public String getLocalAddr() {
			return null;
		}

		@Override
		public int getLocalPort() {
			return 0;
		}

		@Override
		public ServletContext getServletContext() {
			return null;
		}

		@Override
		public AsyncContext startAsync() throws IllegalStateException {
			return null;
		}

		@Override
		public AsyncContext startAsync(ServletRequest servletRequest,
				ServletResponse servletResponse)
						throws IllegalStateException {
			return null;
		}

		@Override
		public boolean isAsyncStarted() {
			return false;
		}

		@Override
		public boolean isAsyncSupported() {
			return false;
		}

		@Override
		public AsyncContext getAsyncContext() {
			return null;
		}

		@Override
		public DispatcherType getDispatcherType() {
			return null;
		}

		@Override
		public String getAuthType() {
			return null;
		}

		@Override
		public Cookie[] getCookies() {
			return null;
		}

		@Override
		public long getDateHeader(String name) {
			return 0;
		}

		@Override
		public String getHeader(String name) {
			return null;
		}

		@Override
		public Enumeration<String> getHeaders(String name) {
			return null;
		}

		@Override
		public Enumeration<String> getHeaderNames() {
			return null;
		}

		@Override
		public int getIntHeader(String name) {
			return 0;
		}

		@Override
		public String getMethod() {
			return null;
		}

		@Override
		public String getPathInfo() {
			return null;
		}

		@Override
		public String getPathTranslated() {
			return null;
		}

		@Override
		public String getContextPath() {
			return null;
		}

		@Override
		public String getQueryString() {
			return null;
		}

		@Override
		public String getRemoteUser() {
			return null;
		}

		@Override
		public boolean isUserInRole(String role) {
			if(role != null && "admin".equals(role)) {
				return true;
			}
			return false;
		}

		@Override
		public Principal getUserPrincipal() {
			return new Principal(){
				@Override
				public String getName() {
					return "sunnyjim";
				}

			};
		}

		@Override
		public String getRequestedSessionId() {
			return null;
		}

		@Override
		public String getRequestURI() {
			return null;
		}

		@Override
		public StringBuffer getRequestURL() {
			return null;
		}

		@Override
		public String getServletPath() {
			return null;
		}

		@Override
		public HttpSession getSession(boolean create) {
			return null;
		}

		final Map<String, Object> sessionAttributes = new HashMap<String, Object>();
		@Override
		public HttpSession getSession() {
			return new HttpSession() {

				@Override
				public long getCreationTime() {
					return 0;
				}

				@Override
				public String getId() {
					return null;
				}

				@Override
				public long getLastAccessedTime() {
					return 0;
				}

				@Override
				public ServletContext getServletContext() {
					return null;
				}

				@Override
				public void setMaxInactiveInterval(int interval) {
				}

				@Override
				public int getMaxInactiveInterval() {
					return 0;
				}

				@Override
				public HttpSessionContext getSessionContext() {
					return null;
				}

				@Override
				public Object getAttribute(String name) {
					return sessionAttributes.get(name);
				}

				@Override
				public Object getValue(String name) {
					return null;
				}

				@Override
				public Enumeration<String> getAttributeNames() {
					return Collections.enumeration(sessionAttributes.keySet());
				}

				@Override
				public String[] getValueNames() {
					return null;
				}

				@Override
				public void setAttribute(String name,
						Object value) {
				}

				@Override
				public void putValue(String name, Object value) {
				}

				@Override
				public void removeAttribute(String name) {
				}

				@Override
				public void removeValue(String name) {
				}

				@Override
				public void invalidate() {
				}

				@Override
				public boolean isNew() {
					return false;
				}

			};
		}

		@Override
		public String changeSessionId() {
			return null;
		}

		@Override
		public boolean isRequestedSessionIdValid() {
			return false;
		}

		@Override
		public boolean isRequestedSessionIdFromCookie() {
			return false;
		}

		@Override
		public boolean isRequestedSessionIdFromURL() {
			return false;
		}

		@Override
		public boolean isRequestedSessionIdFromUrl() {
			return false;
		}

		@Override
		public boolean authenticate(HttpServletResponse response)
				throws IOException, ServletException {
			return false;
		}

		@Override
		public void login(String username, String password)
				throws ServletException {
		}

		@Override
		public void logout() throws ServletException {
		}

		@Override
		public Collection<Part> getParts() throws IOException,
		ServletException {
			return null;
		}

		@Override
		public Part getPart(String name) throws IOException,
		ServletException {
			return null;
		}

		@Override
		public <T extends HttpUpgradeHandler> T upgrade(
				Class<T> handlerClass) throws IOException,
				ServletException {
			return null;
		}

	}

	HashMap<String, Object> settings = new HashMap<String, Object>();

	MemorySettings getSettings() {
		return new MemorySettings(settings);
	}

	IAuthenticationManager newAuthenticationManager() {
		XssFilter xssFilter = new AllowXssFilter();
		RuntimeManager runtime = new RuntimeManager(getSettings(), xssFilter, GitBlitSuite.BASEFOLDER).start();
		users = new UserManager(runtime, null).start();
		final Map<String, UserModel> virtualUsers = new HashMap<String, UserModel>();
		users.setUserService(new IUserService() {

			@Override
			public void setup(IRuntimeManager runtimeManager) {
			}

			@Override
			public String getCookie(UserModel model) {
				return null;
			}

			@Override
			public UserModel getUserModel(char[] cookie) {
				return null;
			}

			@Override
			public UserModel getUserModel(String username) {
				return virtualUsers.get(username);
			}

			@Override
			public boolean updateUserModel(UserModel model) {
				virtualUsers.put(model.username, model);
				return true;
			}

			@Override
			public boolean updateUserModels(Collection<UserModel> models) {
				return false;
			}

			@Override
			public boolean updateUserModel(String username, UserModel model) {
				virtualUsers.put(username, model);
				return true;
			}

			@Override
			public boolean deleteUserModel(UserModel model) {
				return false;
			}

			@Override
			public boolean deleteUser(String username) {
				return false;
			}

			@Override
			public List<String> getAllUsernames() {
				return null;
			}

			@Override
			public List<UserModel> getAllUsers() {
				return null;
			}

			@Override
			public List<String> getAllTeamNames() {
				return null;
			}

			@Override
			public List<TeamModel> getAllTeams() {
				return null;
			}

			@Override
			public List<String> getTeamNamesForRepositoryRole(String role) {
				return null;
			}

			@Override
			public TeamModel getTeamModel(String teamname) {
				return null;
			}

			@Override
			public boolean updateTeamModel(TeamModel model) {
				return false;
			}

			@Override
			public boolean updateTeamModels(Collection<TeamModel> models) {
				return false;
			}

			@Override
			public boolean updateTeamModel(String teamname, TeamModel model) {
				return false;
			}

			@Override
			public boolean deleteTeamModel(TeamModel model) {
				return false;
			}

			@Override
			public boolean deleteTeam(String teamname) {
				return false;
			}

			@Override
			public List<String> getUsernamesForRepositoryRole(String role) {
				return null;
			}

			@Override
			public boolean renameRepositoryRole(String oldRole,
					String newRole) {
				return false;
			}

			@Override
			public boolean deleteRepositoryRole(String role) {
				return false;
			}

		});
		AuthenticationManager auth = new AuthenticationManager(runtime, users).start();
		return auth;
	}

	@Test
	public void testAuthenticate() throws Exception {
		IAuthenticationManager auth = newAuthenticationManager();

		UserModel user = new UserModel("sunnyjim");
		user.password = "password";
		users.updateUserModel(user);

		assertNotNull(auth.authenticate(user.username, user.password.toCharArray(), null));
		user.disabled = true;

		users.updateUserModel(user);
		assertNull(auth.authenticate(user.username, user.password.toCharArray(), null));
		users.deleteUserModel(user);
	}

	@Test
	public void testContenairAuthenticate() throws Exception {
		settings.put(Keys.realm.container.autoCreateAccounts, "true");
		settings.put(Keys.realm.container.autoAccounts.displayName, "displayName");
		settings.put(Keys.realm.container.autoAccounts.emailAddress, "emailAddress");
		settings.put(Keys.realm.container.autoAccounts.adminRole, "admin");
		settings.put(Keys.realm.container.autoAccounts.locale, "locale");

		DummyHttpServletRequest request = new DummyHttpServletRequest();
		request.sessionAttributes.put("displayName", "Sunny Jim");
		request.sessionAttributes.put("emailAddress", "Jim.Sunny@gitblit.com");
		request.sessionAttributes.put("locale", "it");

		IAuthenticationManager auth = newAuthenticationManager();

		UserModel user = auth.authenticate(request);

		assertTrue(user.canAdmin);
		assertEquals("Sunny Jim", user.displayName);
		assertEquals("Jim.Sunny@gitblit.com", user.emailAddress);
		assertEquals(Locale.ITALIAN, user.getPreferences().getLocale());
	}

	@Test
	public void testContenairAuthenticateEmpty() throws Exception {
		settings.put(Keys.realm.container.autoCreateAccounts, "true");
		settings.put(Keys.realm.container.autoAccounts.displayName, "displayName");
		settings.put(Keys.realm.container.autoAccounts.emailAddress, "emailAddress");
		settings.put(Keys.realm.container.autoAccounts.adminRole, "notAdmin");

		DummyHttpServletRequest request = new DummyHttpServletRequest();

		IAuthenticationManager auth = newAuthenticationManager();

		UserModel user = auth.authenticate(request);

		assertFalse(user.canAdmin);
		assertEquals("sunnyjim", user.displayName);
		assertNull(user.emailAddress);
		assertNull(user.getPreferences().getLocale());
	}

}