/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.keycloak.testsuite.forms;

import org.junit.Assert;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.keycloak.OAuth2Constants;
import org.keycloak.events.Details;
import org.keycloak.events.Event;
import org.keycloak.models.BrowserSecurityHeaders;
import org.keycloak.models.PasswordPolicy;
import org.keycloak.models.RealmModel;
import org.keycloak.models.UserCredentialModel;
import org.keycloak.models.UserModel;
import org.keycloak.representations.idm.CredentialRepresentation;
import org.keycloak.services.managers.RealmManager;
import org.keycloak.testsuite.AssertEvents;
import org.keycloak.testsuite.OAuthClient;
import org.keycloak.testsuite.pages.AppPage;
import org.keycloak.testsuite.pages.AppPage.RequestType;
import org.keycloak.testsuite.pages.LoginPage;
import org.keycloak.testsuite.rule.KeycloakRule;
import org.keycloak.testsuite.rule.WebResource;
import org.keycloak.testsuite.rule.WebRule;
import org.openqa.selenium.WebDriver;

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.core.Response;
import java.util.Map;

/**
 * @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
 */
public class LoginTest {

    @ClassRule
    public static KeycloakRule keycloakRule = new KeycloakRule(new KeycloakRule.KeycloakSetup() {
        @Override
        public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
            UserModel user = manager.getSession().users().addUser(appRealm, "login-test");
            user.setEmail("login@test.com");
            user.setEnabled(true);

            userId = user.getId();

            UserCredentialModel creds = new UserCredentialModel();
            creds.setType(CredentialRepresentation.PASSWORD);
            creds.setValue("password");

            user.updateCredential(creds);
        }
    });

    @Rule
    public AssertEvents events = new AssertEvents(keycloakRule);

    @Rule
    public WebRule webRule = new WebRule(this);

    @WebResource
    protected OAuthClient oauth;

    @WebResource
    protected WebDriver driver;

    @WebResource
    protected AppPage appPage;

    @WebResource
    protected LoginPage loginPage;

    private static String userId;

    @Test
    public void testBrowserSecurityHeaders() {
        Client client = ClientBuilder.newClient();
        Response response = client.target(oauth.getLoginFormUrl()).request().get();
        Assert.assertEquals(200, response.getStatus());
        for (Map.Entry<String, String> entry : BrowserSecurityHeaders.defaultHeaders.entrySet()) {
            String headerName = BrowserSecurityHeaders.headerAttributeMap.get(entry.getKey());
            String headerValue = response.getHeaderString(headerName);
            Assert.assertNotNull(headerValue);
            Assert.assertEquals(headerValue, entry.getValue());
        }
        response.close();
    }

    @Test
    public void loginInvalidPassword() {
        loginPage.open();
        loginPage.login("login-test", "invalid");

        loginPage.assertCurrent();

        Assert.assertEquals("Invalid username or password.", loginPage.getError());

        events.expectLogin().user(userId).session((String) null).error("invalid_user_credentials").detail(Details.USERNAME, "login-test").removeDetail(Details.CODE_ID).assertEvent();
    }

    @Test
    public void loginInvalidUsername() {
        loginPage.open();
        loginPage.login("invalid", "password");

        loginPage.assertCurrent();

        Assert.assertEquals("Invalid username or password.", loginPage.getError());

        events.expectLogin().user((String) null).session((String) null).error("user_not_found").detail(Details.USERNAME, "invalid").removeDetail(Details.CODE_ID).assertEvent();
    }

    @Test
    public void loginSuccess() {
        loginPage.open();
        loginPage.login("login-test", "password");
        
        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Assert.assertNotNull(oauth.getCurrentQuery().get(OAuth2Constants.CODE));

        events.expectLogin().user(userId).detail(Details.USERNAME, "login-test").assertEvent();
    }

    @Test
    public void loginLoginHint() {
        String loginFormUrl = oauth.getLoginFormUrl() + "&login_hint=login-test";
        driver.navigate().to(loginFormUrl);

        Assert.assertEquals("login-test", loginPage.getUsername());
        loginPage.login("password");

        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Assert.assertNotNull(oauth.getCurrentQuery().get(OAuth2Constants.CODE));

        events.expectLogin().user(userId).detail(Details.USERNAME, "login-test").assertEvent();
    }

    @Test
    public void loginWithEmailSuccess() {
        loginPage.open();
        loginPage.login("login@test.com", "password");

        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Assert.assertNotNull(oauth.getCurrentQuery().get(OAuth2Constants.CODE));

        events.expectLogin().user(userId).detail(Details.USERNAME, "login@test.com").assertEvent();
    }

    @Test
    public void loginWithRememberMe() {
        keycloakRule.update(new KeycloakRule.KeycloakSetup() {
            @Override
            public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                appRealm.setRememberMe(true);
            }
        });

        try {
            loginPage.open();
            Assert.assertFalse(loginPage.isRememberMeChecked());
            loginPage.setRememberMe(true);
            Assert.assertTrue(loginPage.isRememberMeChecked());
            loginPage.login("login-test", "password");

            Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
            Assert.assertNotNull(oauth.getCurrentQuery().get(OAuth2Constants.CODE));
            Event loginEvent = events.expectLogin().user(userId)
                    .detail(Details.USERNAME, "login-test")
                    .detail(Details.REMEMBER_ME, "true")
                    .assertEvent();
            String sessionId = loginEvent.getSessionId();

            // Expire session
            keycloakRule.removeUserSession(sessionId);

            // Assert rememberMe checked and username/email prefilled
            loginPage.open();
            Assert.assertTrue(loginPage.isRememberMeChecked());
            Assert.assertEquals("login-test", loginPage.getUsername());

            loginPage.setRememberMe(false);
        } finally {
            keycloakRule.update(new KeycloakRule.KeycloakSetup() {
                @Override
                public void config(RealmManager manager, RealmModel adminstrationRealm, RealmModel appRealm) {
                    appRealm.setRememberMe(false);
                }
            });
        }
    }

    @Test
    public void loginCancel() {
        loginPage.open();
        loginPage.cancel();

        Assert.assertEquals(RequestType.AUTH_RESPONSE, appPage.getRequestType());
        Assert.assertEquals("access_denied", oauth.getCurrentQuery().get(OAuth2Constants.ERROR));

        events.expectLogin().error("rejected_by_user").user((String) null).session((String) null).removeDetail(Details.USERNAME).removeDetail(Details.CODE_ID).assertEvent();
    }

}
